Duke Energy (DUK) 10-K 27 Feb 25 2024 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2024	Jan. 31, 2025	Jun. 30, 2024
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	1-32853
Entity Registrant Name	DUKE ENERGY CORPORATION
Entity Tax Identification Number	20-2777218
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	525 South Tryon Street
Entity Address, City or Town	Charlotte
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	28202
City Area Code	800
Local Phone Number	488-3853
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 77,292,284,116
Entity Common Stock, Shares Outstanding		776,461,008
Documents Incorporated by Reference	Portions of the Duke Energy definitive proxy statement for the 2025 Annual Meeting of the Shareholders or an amendment to this Annual Report are incorporated by reference into PART III, Items 10, 11 and 13 hereof. This combined Form 10-K is filed separately by eight registrants: Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont (collectively the Duke Energy Registrants). Information contained herein relating to any individual registrant is filed by such registrant solely on its own behalf. Each registrant makes no representation as to information relating exclusively to the other registrants.
Entity Central Index Key	0001326160
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	DUK
Security Exchange Name	NYSE
Junior Subordinated Debentures 5.625% Coupon Due September 2078
Document Information [Line Items]
Title of 12(b) Security	5.625% Junior Subordinated Debentures
Trading Symbol	DUKB
Security Exchange Name	NYSE
Depositary Share
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares
Trading Symbol	DUK PR A
Security Exchange Name	NYSE
3.10% Senior Notes due 2028
Document Information [Line Items]
Title of 12(b) Security	3.10% Senior Notes due 2028
Trading Symbol	DUK 28A
Security Exchange Name	NYSE
3.85% Senior Notes due 2034
Document Information [Line Items]
Title of 12(b) Security	3.85% Senior Notes due 2034
Trading Symbol	DUK 34
Security Exchange Name	NYSE
Duke Energy Carolinas
Document Information [Line Items]
Entity File Number	1-4928
Entity Registrant Name	DUKE ENERGY CAROLINAS, LLC
Entity Tax Identification Number	56-0205520
Entity Incorporation, State or Country Code	NC
Entity Address, Address Line One	525 South Tryon Street
Entity Address, City or Town	Charlotte
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	28202
City Area Code	800
Local Phone Number	488-3853
Entity Well-known Seasoned Issuer	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000030371
Progress Energy
Document Information [Line Items]
Entity File Number	1-15929
Entity Registrant Name	PROGRESS ENERGY, INC.
Entity Tax Identification Number	56-2155481
Entity Incorporation, State or Country Code	NC
Entity Address, Address Line One	411 Fayetteville Street
Entity Address, City or Town	Raleigh
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	27601
City Area Code	800
Local Phone Number	488-3853
Entity Well-known Seasoned Issuer	No
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		100
Entity Central Index Key	0001094093
Duke Energy Progress
Document Information [Line Items]
Entity File Number	1-3382
Entity Registrant Name	DUKE ENERGY PROGRESS, LLC
Entity Tax Identification Number	56-0165465
Entity Incorporation, State or Country Code	NC
Entity Address, Address Line One	411 Fayetteville Street
Entity Address, City or Town	Raleigh
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	27601
City Area Code	800
Local Phone Number	488-3853
Entity Well-known Seasoned Issuer	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000017797
Duke Energy Florida
Document Information [Line Items]
Entity File Number	1-3274
Entity Registrant Name	DUKE ENERGY FLORIDA, LLC
Entity Tax Identification Number	59-0247770
Entity Incorporation, State or Country Code	FL
Entity Address, Address Line One	299 First Avenue North
Entity Address, City or Town	St. Petersburg
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33701
City Area Code	800
Local Phone Number	488-3853
Entity Well-known Seasoned Issuer	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000037637
Duke Energy Ohio
Document Information [Line Items]
Entity File Number	1-1232
Entity Registrant Name	DUKE ENERGY OHIO, INC.
Entity Tax Identification Number	31-0240030
Entity Incorporation, State or Country Code	OH
Entity Address, Address Line One	139 East Fourth Street
Entity Address, City or Town	Cincinnati
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	45202
City Area Code	800
Local Phone Number	488-3853
Entity Well-known Seasoned Issuer	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		89,663,086
Entity Central Index Key	0000020290
Duke Energy Indiana
Document Information [Line Items]
Entity File Number	1-3543
Entity Registrant Name	DUKE ENERGY INDIANA, LLC
Entity Tax Identification Number	35-0594457
Entity Incorporation, State or Country Code	IN
Entity Address, Address Line One	1000 East Main Street
Entity Address, City or Town	Plainfield
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	46168
City Area Code	800
Local Phone Number	488-3853
Entity Well-known Seasoned Issuer	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0000081020
Piedmont
Document Information [Line Items]
Entity File Number	1-6196
Entity Registrant Name	PIEDMONT NATURAL GAS COMPANY, INC.
Entity Tax Identification Number	56-0556998
Entity Incorporation, State or Country Code	NC
Entity Address, Address Line One	525 South Tryon Street
Entity Address, City or Town	Charlotte
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	28202
City Area Code	800
Local Phone Number	488-3853
Entity Well-known Seasoned Issuer	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		100
Entity Central Index Key	0000078460

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2024
Auditor [Line Items]
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Charlotte, NC
Duke Energy Carolinas
Auditor [Line Items]
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Charlotte, NC
Progress Energy
Auditor [Line Items]
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Charlotte, NC
Duke Energy Progress
Auditor [Line Items]
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Charlotte, NC
Duke Energy Florida
Auditor [Line Items]
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Charlotte, NC
Duke Energy Ohio
Auditor [Line Items]
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Charlotte, NC
Duke Energy Indiana
Auditor [Line Items]
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Charlotte, NC
Piedmont
Auditor [Line Items]
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Charlotte, NC

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Revenues
Regulated electric	$ 27,787	$ 26,617	$ 25,759
Regulated natural gas	2,252	2,152	2,724
Nonregulated electric and other	318	291	285
Total operating revenues	30,357	29,060	28,768
Operating Expenses
Operation, maintenance and other	5,389	5,625	5,734
Depreciation and amortization	5,793	5,253	5,086
Property and other taxes	1,466	1,400	1,466
Impairment of assets and other charges	38	85	434
Total operating expenses	22,457	22,042	22,778
Gains on Sales of Other Assets and Other, net	26	52	22
Operating Income	7,926	7,070	6,012
Other Income and Expenses
Equity in (losses) earnings of unconsolidated affiliates	(9)	113	113
Other income and expenses, net	661	598	392
Total other income and expenses	652	711	505
Interest Expense	3,384	3,014	2,439
Income From Continuing Operations Before Income Taxes	5,194	4,767	4,078
Income Tax Expense From Continuing Operations	590	438	300
Income From Continuing Operations	4,604	4,329	3,778
(Loss) Income from discontinued operations, net of tax	10	(1,455)	(1,323)
Net Income	4,614	2,874	2,455
Less: Net Income (Loss) Attributable to Noncontrolling Interests	90	33	(95)
Net Income Attributable to Duke Energy Corporation	4,524	2,841	2,550
Less: Preferred Dividends	106	106	106
Less: Preferred Redemption Costs	16	0	0
Net Income Available to Duke Energy Corporation Common Stockholders	$ 4,402	$ 2,735	$ 2,444
Income from continuing operations available to Duke Energy Corporation common stockholders
Basic (usd per share)	$ 0.01	$ (1.81)	$ (1.57)
Diluted (usd per share)	5.70	5.35	4.74
Basic (usd per share)	5.70	5.35	4.74
Diluted (usd per share)	0.01	(1.81)	(1.57)
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders
Basic (usd per share)	0.01	(1.81)	(1.57)
Diluted (usd per share)	0.01	(1.81)	(1.57)
Net income available to Duke Energy Corporation common stockholders
Basic (usd per share)	5.71	3.54	3.17
Diluted (usd per share)	$ 5.71	$ 3.54	$ 3.17
Weighted average shares outstanding
Basic (in shares)	772	771	770
Diluted (in shares)	772	771	770
Fuel used in electric generation and purchased power
Operating Expenses
Cost of sales	$ 9,206	$ 9,086	$ 8,782
Cost of natural gas
Operating Expenses
Cost of sales	$ 565	$ 593	$ 1,276

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net income		$ 4,614	$ 2,874	$ 2,455
Other Comprehensive Income (Loss), net of tax
Pension and OPEB adjustments	[1]	8	(1)	(19)
Net unrealized gains on cash flow hedges	[1]	209	63	285
Reclassification into earnings from cash flow hedges	[1]	(5)	27	(38)
Net unrealized gains (losses) on fair value hedges	[1]	24	37	(33)
Unrealized gains (losses) on available-for-sale securities	[1]	(2)	8	(21)
Other Comprehensive Income, net of tax	[1]	234	134	174
Comprehensive Income		4,848	3,008	2,629
Less: Comprehensive Income (Loss) Attributable to Noncontrolling Interests		90	33	(84)
Comprehensive Income Attributable to Duke Energy Corporation		4,758	2,975	2,713
Less: Preferred Dividends		106	106	106
Less: Preferred Redemption Costs		16	0	0
Comprehensive Income Available to Duke Energy Corporation Common Stockholders		$ 4,636	$ 2,869	$ 2,607
[1]Net of income tax expense of app roximately $70 million, $40 million and $52 million for the years ended December 31, 2024, 2023 and 2022, respectively.

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Other comprehensive income, tax expense	$ 70	$ 40	$ 52

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 314	$ 253
Receivables (net of allowance for doubtful accounts)	1,889	3,019
Receivables of VIEs (net of allowance for doubtful accounts)	2,232	1,112
Receivable from sales of Commercial Renewables Disposal Groups	551	0
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Assets held for sale	4	14
Other (includes amounts related to VIEs)	695	431
Total current assets	12,950	12,769
Property, Plant and Equipment
Cost	180,806	171,353
Accumulated depreciation and amortization	(57,503)	(56,038)
Net property, plant and equipment	123,303	115,315
Other Noncurrent Assets
Goodwill	19,303	19,303
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Nuclear decommissioning trust funds	11,434	10,143
Operating lease right-of-use assets, net	1,148	1,092
Investments in equity method unconsolidated affiliates	353	492
Total other noncurrent assets held for sale	89	197
Other (including amounts related to VIEs)	3,509	3,964
Total other noncurrent assets	50,090	48,809
Total Assets	186,343	176,893
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	5,479	4,228
Notes payable and commercial paper	3,584	4,288
Taxes accrued	851	816
Interest accrued	855	745
Current maturities of long-term debt	4,349	2,800
Asset retirement obligations	650	596
Regulatory liabilities	1,425	1,369
Liabilities associated with assets held for sale	80	122
Other	2,084	2,319
Total current liabilities	19,357	17,283
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Other Noncurrent Liabilities
Deferred income taxes	11,424	10,556
Total noncurrent asset retirement obligation	9,342	8,560
Total noncurrent regulatory liabilities	14,694	14,039
Operating lease liabilities	957	917
Accrued pension and other post-retirement benefit costs	434	485
Investment tax credits	894	864
Liabilities associated with assets held for sale	89	157
Other noncurrent liabilities	1,556	1,393
Total other noncurrent liabilities	39,390	36,971
Commitments and Contingencies
Equity
Common stock	1	1
Additional paid-in capital	45,494	44,920
Retained earnings	3,431	2,235
Accumulated other comprehensive income (loss)	228	(6)
Total Duke Energy Corporation stockholders' equity	50,127	49,112
Noncontrolling interests	1,129	1,075
Total equity	51,256	50,187
Total Liabilities and Equity	186,343	176,893
Consolidated VIEs
Current Assets
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	120	110
Other (includes amounts related to VIEs)	90
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	214	188
Current maturities of long-term debt	1,012	428
Long-Term Debt (includes amounts related to VIEs)	1,842	3,000
Other Noncurrent Liabilities
Other noncurrent liabilities	27	35
Series A Preferred Stock
Equity
Preferred stock	973	973
Series B Preferred Stock
Equity
Preferred stock	$ 0	$ 989

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts - receivables	$ 124	$ 55
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Current Assets: Other	695	431
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Other (including amounts related to VIEs)	3,509	3,964
Accounts payable	5,479	4,228
Current maturities of long-term debt	4,349	2,800
Long-Term Debt (includes amounts related to VIEs)	$ 76,340	$ 72,452
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares outstanding (in shares)	776,000,000	771,000,000
Other (includes $54 at 2023 related to VIEs)	$ 1,556	$ 1,393
Consolidated VIEs
Allowance for doubtful accounts - receivables of VIEs	85	150
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	120	110
Current Assets: Other	90
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Accounts payable	214	188
Current maturities of long-term debt	1,012	428
Long-Term Debt (includes amounts related to VIEs)	1,842	3,000
Other (includes $54 at 2023 related to VIEs)	$ 27	$ 35
Series A Preferred Stock
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred stock, depositary shares authorized (in shares)	40,000,000	40,000,000
Preferred stock, depositary shares outstanding (in shares)	40,000,000	40,000,000
Series B Preferred Stock
Preferred stock, par value (in usd per share)	$ 0.001	$ 0.001
Preferred stock, depositary shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, depositary shares outstanding (in shares)	0	1,000,000

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 4,614	$ 2,874	$ 2,455
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	6,419	6,084	5,843
Equity in losses (earnings) of unconsolidated affiliates	9	(98)	(114)
Losses on sales of Commercial Renewables Disposal Groups	14	1,725	1,748
Equity component of AFUDC	(233)	(198)	(197)
Impairment of assets and other charges	38	85	434
Deferred income taxes	987	3	(200)
Contributions to qualified pension plans	(100)	(100)	(58)
Payments for asset retirement obligations	(545)	(632)	(584)
Provision for rate refunds	(27)	(63)	(130)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	(103)	(18)	19
Receivables	(23)	443	(788)
Inventory	(212)	(706)	(476)
Other current assets	885	(267)	(1,498)
Increase (decrease) in
Accounts payable	1,329	(800)	805
Taxes accrued	32	126	10
Other current liabilities	(11)	(26)	(153)
Other assets	(1,170)	914	(1,577)
Other liabilities	451	584	410
Net cash provided by operating activities	12,328	9,878	5,927
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,280)	(12,604)	(11,367)
Contributions to equity method investments	(8)	(34)	(58)
Return of investment capital	25	16	6
Purchases of debt and equity securities	(5,703)	(3,761)	(4,243)
Proceeds from sales and maturities of debt and equity securities	5,803	3,824	4,333
Proceeds from the sales of other assets	49	149	83
Proceeds from the sales of Commercial Renewables Disposal Groups, net of cash divested	0	734	0
Other	(1,009)	(799)	(727)
Net cash used in investing activities	(13,123)	(12,475)	(11,973)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	8,956	10,028	11,874
Proceeds from the issuance of common stock	405	8	9
Redemption of preferred stock	(1,000)	0	0
Payments for the redemption of long-term debt	(3,357)	(4,737)	(4,396)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days	557	610	80
Payments for the redemption of short-term debt with original maturities greater than 90 days	(1,096)	(125)	(287)
Notes payable and commercial paper	(388)	(343)	781
Contributions from noncontrolling interests	47	278	1,377
Dividends paid	(3,213)	(3,244)	(3,179)
Other	(52)	(124)	(130)
Net cash provided by financing activities	859	2,351	6,129
Net increase (decrease) in cash, cash equivalents and restricted cash	64	(246)	83
Cash, cash equivalents and restricted cash at beginning of period	357	603	520
Cash, cash equivalents and restricted cash at end of period	421	357	603
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	3,284	2,883	2,361
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(400)	1	(6)
Significant non-cash transactions:
Accrued capital expenditures	$ 1,909	$ 1,908	$ 1,766

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Changes in Equity - USD ($) shares in Millions, $ in Millions		Total		Preferred Stock	Total Equity	Common Stock	Additional Paid-in Capital	Retained Earnings	Net Gains (Losses) on Hedges	[1]	Net Unrealized Gains (Losses) on Available-for-Sale Securities	Pension and OPEB Adjustments	Noncontrolling Interests
Beginning Balance (Attributable to Parent) at Dec. 31, 2021				$ 1,962	$ 49,296	$ 1	$ 44,371	$ 3,265	$ (232)		$ (2)	$ (69)
Beginning Balance (in shares) at Dec. 31, 2021						769
Beginning Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2021													$ 1,840
Beginning Balance (Parent) at Dec. 31, 2021		$ 51,136
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)(d)	[2]	2,349			2,444			2,444					(95)
Other comprehensive income (loss)		174	[3]		163				203		(21)	(19)	11
Common stock issuances, including dividend reinvestment and employee benefits (in shares)						1
Common stock issuances, including dividend reinvestment and employee benefits		76			76		76
Common stock dividends		(3,073)			(3,073)			(3,073)
Sale of noncontrolling interest	[4]	1,034			465		465						569
Purchase of noncontrolling interest		(20)			(51)		(51)						31
Contribution from NCI, net of transaction costs(a)	[5]	314											314
Distributions to NCI in subsidiaries		(140)											(140)
Other		3			2		1	1					1
Ending Balance (Attributable to Parent) at Dec. 31, 2022				1,962	49,322	$ 1	44,862	2,637	(29)		(23)	(88)
Beginning Balance (in shares) at Dec. 31, 2022						770
Ending Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2022													2,531
Ending Balance (Parent) at Dec. 31, 2022		51,853
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)(d)	[2]	2,768			2,735			2,735					33
Other comprehensive income (loss)		134	[3]		134				127		8	(1)	0
Common stock issuances, including dividend reinvestment and employee benefits (in shares)						1
Common stock issuances, including dividend reinvestment and employee benefits		78			78		78
Common stock dividends		(3,138)			(3,138)			(3,138)
Sale of noncontrolling interest		(3)			(13)		(13)						10
Contribution from NCI, net of transaction costs(a)	[5]	278											278
Distributions to NCI in subsidiaries		(59)											(59)
Sale of Commercial Renewables Disposal Groups		(1,722)											(1,722)
Other		(2)			(6)		(7)	1					4
Ending Balance (Attributable to Parent) at Dec. 31, 2023		$ 49,112		1,962	49,112	$ 1	44,920	2,235	98		(15)	(89)
Beginning Balance (in shares) at Dec. 31, 2023		771				771
Ending Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2023		$ 1,075											1,075
Ending Balance (Parent) at Dec. 31, 2023		50,187
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)(d)	[2]	4,492			4,402			4,402					90
Other comprehensive income (loss)		234	[3]		234				228		(2)	8
Common stock issuances, including dividend reinvestment and employee benefits (in shares)						5
Common stock issuances, including dividend reinvestment and employee benefits		574			574		574
Common stock dividends		(3,204)			(3,204)			(3,204)
Contribution from NCI, net of transaction costs(a)		47											47
Distributions to NCI in subsidiaries		(32)											(32)
Sale of Commercial Renewables Disposal Groups		(51)											(51)
Other		(2)			(2)			(2)					0
Preferred stock, Series B, redemption		(989)		(989)	(989)
Ending Balance (Attributable to Parent) at Dec. 31, 2024		$ 50,127		$ 973	$ 50,127	$ 1	$ 45,494	$ 3,431	$ 326		$ (17)	$ (81)
Beginning Balance (in shares) at Dec. 31, 2024		776				776
Ending Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2024		$ 1,129											$ 1,129
Ending Balance (Parent) at Dec. 31, 2024		$ 51,256
[1]See Duke Energy Consolidated Statements of Comprehensive Income for detailed activity related to Cash Flow and Fair Value Hedges.[2]Net income available to Duke Energy Corporation Common Stockholders reflects preferred dividends and, for 2024, the $16 million preferred redemption costs.[3]Net of income tax expense of app roximately $70 million, $40 million and $52 million for the years ended December 31, 2024, 2023 and 2022, respectively.

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Changes in Equity (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Stockholders' Equity [Abstract]
Less: Preferred Redemption Costs	$ 16	$ 0	$ 0

Condensed Consolidated Statem_7

Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Carolinas - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Revenues	$ 30,357	$ 29,060	$ 28,768
Operating Expenses
Operation, maintenance and other	5,389	5,625	5,734
Depreciation and amortization	5,793	5,253	5,086
Property and other taxes	1,466	1,400	1,466
Impairment of assets and other charges	38	85	434
Total operating expenses	22,457	22,042	22,778
Gains on Sales of Other Assets and Other, net	26	52	22
Operating Income	7,926	7,070	6,012
Other Income and Expenses, net	652	711	505
Interest Expense	3,384	3,014	2,439
Income From Continuing Operations Before Income Taxes	5,194	4,767	4,078
Income Tax Expense From Continuing Operations	590	438	300
Net Income Attributable to Duke Energy Corporation	4,524	2,841	2,550
Comprehensive Income Attributable to Duke Energy Corporation	4,758	2,975	2,713
Duke Energy Carolinas
Operating Revenues	9,718	8,288	7,857
Operating Expenses
Cost of sales	3,251	2,524	2,015
Operation, maintenance and other	1,740	1,774	1,892
Depreciation and amortization	1,768	1,593	1,526
Property and other taxes	346	320	340
Impairment of assets and other charges	31	44	26
Total operating expenses	7,136	6,255	5,799
Gains on Sales of Other Assets and Other, net	2	26	4
Operating Income	2,584	2,059	2,062
Other Income and Expenses, net	247	238	221
Interest Expense	722	686	557
Income From Continuing Operations Before Income Taxes	2,109	1,611	1,726
Income Tax Expense From Continuing Operations	226	141	126
Net Income Attributable to Duke Energy Corporation	1,883	1,470	1,600
Comprehensive Income Attributable to Duke Energy Corporation	$ 1,883	$ 1,470	$ 1,600

Condensed Consolidated Balanc_3

Condensed Consolidated Balance Sheets - Duke Energy Carolinas - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 314	$ 253
Receivables of VIEs (net of allowance for doubtful accounts)	2,232	1,112
Receivables (net of allowance for doubtful accounts)	1,889	3,019
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Other (includes amounts related to VIEs)	695	431
Total current assets	12,950	12,769
Property, Plant and Equipment
Cost	180,806	171,353
Accumulated depreciation and amortization	(57,503)	(56,038)
Net property, plant and equipment	123,303	115,315
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Nuclear decommissioning trust funds	11,434	10,143
Operating lease right-of-use assets, net	1,148	1,092
Other (including amounts related to VIEs)	3,509	3,964
Total other noncurrent assets	50,090	48,809
Total Assets	186,343	176,893
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	5,479	4,228
Taxes accrued	851	816
Interest accrued	855	745
Current maturities of long-term debt	4,349	2,800
Asset retirement obligations	650	596
Regulatory liabilities	1,425	1,369
Other	2,084	2,319
Total current liabilities	19,357	17,283
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Other Noncurrent Liabilities
Deferred income taxes	11,424	10,556
Total noncurrent asset retirement obligation	9,342	8,560
Total noncurrent regulatory liabilities	14,694	14,039
Operating lease liabilities	957	917
Accrued pension and other post-retirement benefit costs	434	485
Investment tax credits	894	864
Other noncurrent liabilities	1,556	1,393
Total other noncurrent liabilities	39,390	36,971
Commitments and Contingencies
Equity
Accumulated other comprehensive income (loss)	228	(6)
Total Liabilities and Equity	186,343	176,893
Consolidated VIEs
Current Assets
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	120	110
Other (includes amounts related to VIEs)	90
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	214	188
Current maturities of long-term debt	1,012	428
Long-Term Debt (includes amounts related to VIEs)	1,842	3,000
Other Noncurrent Liabilities
Other noncurrent liabilities	27	35
Duke Energy Carolinas
Current Assets
Cash and cash equivalents	6	9
Receivables of VIEs (net of allowance for doubtful accounts)	266	265
Receivables (net of allowance for doubtful accounts)	1,054	991
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	1,536	1,484
Regulatory assets	685	1,564
Other (includes amounts related to VIEs)	52	31
Total current assets	3,821	4,547
Property, Plant and Equipment
Cost	58,382	56,670
Accumulated depreciation and amortization	(19,090)	(19,896)
Net property, plant and equipment	39,292	36,774
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	4,199	3,916
Nuclear decommissioning trust funds	6,468	5,686
Operating lease right-of-use assets, net	98	78
Other (including amounts related to VIEs)	1,127	1,109
Total other noncurrent assets	11,892	10,789
Total Assets	55,005	52,110
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	1,809	1,183
Taxes accrued	627	281
Interest accrued	201	179
Current maturities of long-term debt	521	19
Asset retirement obligations	247	224
Regulatory liabilities	618	587
Other	541	702
Total current liabilities	4,805	4,038
Long-Term Debt (includes amounts related to VIEs)	16,669	15,693
Other Noncurrent Liabilities
Deferred income taxes	4,052	4,379
Total noncurrent asset retirement obligation	3,743	3,789
Total noncurrent regulatory liabilities	6,592	5,990
Operating lease liabilities	87	75
Accrued pension and other post-retirement benefit costs	24	57
Investment tax credits	317	301
Other noncurrent liabilities	576	581
Total other noncurrent liabilities	15,391	15,172
Commitments and Contingencies
Equity
Member's equity	17,846	16,913
Accumulated other comprehensive income (loss)	(6)	(6)
Total member's equity	17,840	16,907
Total Liabilities and Equity	55,005	52,110
Duke Energy Carolinas | Consolidated VIEs
Current Assets
Regulatory assets	12	12
Other (includes amounts related to VIEs)	9	9
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	189	196
Current Liabilities
Current maturities of long-term debt	510	510
Long-Term Debt (includes amounts related to VIEs)	198	708
Other Noncurrent Liabilities
Other noncurrent liabilities	15	17
Duke Energy Carolinas | Affiliated entity
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	157	203
Notes receivable from affiliated companies	65	0
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	241	195
Notes payable to affiliated companies	0	668
Long-Term Debt (includes amounts related to VIEs)	$ 300	$ 300

Condensed Consolidated Balanc_4

Condensed Consolidated Balance Sheets - Duke Energy Carolinas (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts - receivables	$ 124	$ 55
Regulatory assets	2,756	3,648
Current Assets: Other	695	431
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Current maturities of long-term debt	4,349	2,800
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Consolidated VIEs
Allowance for doubtful accounts - receivables of VIEs	85	150
Regulatory assets	120	110
Current Assets: Other	90
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Current maturities of long-term debt	1,012	428
Long-Term Debt (includes amounts related to VIEs)	1,842	3,000
Duke Energy Carolinas
Allowance for doubtful accounts - receivables	18	11
Regulatory assets	685	1,564
Current Assets: Other	52	31
Other Noncurrent Assets: Regulatory assets	4,199	3,916
Current maturities of long-term debt	521	19
Long-Term Debt (includes amounts related to VIEs)	16,669	15,693
Duke Energy Carolinas | Consolidated VIEs
Allowance for doubtful accounts - receivables of VIEs	51	45
Regulatory assets	12	12
Current Assets: Other	9	9
Other Noncurrent Assets: Regulatory assets	189	196
Current maturities of long-term debt	510	510
Long-Term Debt (includes amounts related to VIEs)	$ 198	$ 708

Condensed Consolidated Statem_8

Condensed Consolidated Statements of Cash Flows - Duke Energy Carolinas - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 4,614	$ 2,874	$ 2,455
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	6,419	6,084	5,843
Equity component of AFUDC	(233)	(198)	(197)
Gains on sales of other assets	(26)	(52)	(22)
Impairment of assets and other charges	38	85	434
Deferred income taxes	987	3	(200)
Contributions to qualified pension plans	(100)	(100)	(58)
Payments for asset retirement obligations	(545)	(632)	(584)
Provision for rate refunds	(27)	(63)	(130)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	(103)	(18)	19
Receivables	(23)	443	(788)
Inventory	(212)	(706)	(476)
Other current assets	885	(267)	(1,498)
Increase (decrease) in
Accounts payable	1,329	(800)	805
Taxes accrued	32	126	10
Other current liabilities	(11)	(26)	(153)
Other assets	(1,170)	914	(1,577)
Other liabilities	451	584	410
Net cash provided by operating activities	12,328	9,878	5,927
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,280)	(12,604)	(11,367)
Purchases of debt and equity securities	(5,703)	(3,761)	(4,243)
Proceeds from sales and maturities of debt and equity securities	5,803	3,824	4,333
Other	(1,009)	(799)	(727)
Net cash used in investing activities	(13,123)	(12,475)	(11,973)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	8,956	10,028	11,874
Payments for the redemption of long-term debt	(3,357)	(4,737)	(4,396)
Other	(52)	(124)	(130)
Net cash provided by financing activities	859	2,351	6,129
Net increase (decrease) in cash, cash equivalents and restricted cash	64	(246)	83
Cash, cash equivalents and restricted cash at beginning of period	357	603	520
Cash, cash equivalents and restricted cash at end of period	421	357	603
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	3,284	2,883	2,361
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(400)	1	(6)
Significant non-cash transactions:
Accrued capital expenditures	1,909	1,908	1,766
Duke Energy Carolinas
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	1,883	1,470	1,600
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	2,033	1,845	1,787
Equity component of AFUDC	(113)	(91)	(98)
Gains on sales of other assets	(2)	(26)	(4)
Impairment of assets and other charges	31	44	26
Deferred income taxes	(28)	(53)	210
Contributions to qualified pension plans	(26)	(26)	(15)
Payments for asset retirement obligations	(180)	(210)	(200)
Provision for rate refunds	(8)	(39)	(74)
(Increase) decrease in
Receivables	(49)	22	(102)
Receivables from affiliated companies	46	187	(200)
Inventory	(60)	(320)	(138)
Other current assets	928	(495)	(592)
Increase (decrease) in
Accounts payable	476	(447)	377
Accounts payable to affiliated companies	46	(14)	(75)
Taxes accrued	346	64	(46)
Other current liabilities	(68)	63	(91)
Other assets	(556)	703	(760)
Other liabilities	(162)	108	(36)
Net cash provided by operating activities	4,537	2,785	1,569
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(3,966)	(3,733)	(3,304)
Purchases of debt and equity securities	(2,775)	(2,025)	(2,633)
Proceeds from sales and maturities of debt and equity securities	2,775	2,025	2,633
Proceeds from the sales of other assets		30	62
Notes receivable from affiliated companies	(65)
Other	(358)	(288)	(243)
Net cash used in investing activities	(4,389)	(3,991)	(3,485)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	1,487	2,780	1,441
Payments for the redemption of long-term debt	(19)	(1,042)	(436)
Notes payable to affiliated companies	(668)	(565)	1,007
Distributions to parent	(950)	0	(50)
Other	(1)	(1)	(1)
Net cash provided by financing activities	(151)	1,172	1,961
Net increase (decrease) in cash, cash equivalents and restricted cash	(3)	(34)	45
Cash, cash equivalents and restricted cash at beginning of period	19	53	8
Cash, cash equivalents and restricted cash at end of period	16	19	53
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	683	528	546
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(85)	151	(60)
Significant non-cash transactions:
Accrued capital expenditures	$ 802	$ 613	$ 475

Condensed Consolidated Statem_9

Condensed Consolidated Statements of Changes in Equity - Duke Energy Carolinas - USD ($) $ in Millions	Total	Duke Energy Carolinas	Duke Energy Carolinas Member's Equity	Duke Energy Carolinas Net Losses on Cash Flow Hedges
Beginning balance at Dec. 31, 2021		$ 13,891	$ 13,897	$ (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 2,550	1,600	1,600
Distributions to parent	(3,073)	(50)	(50)
Other	3	1	1
Ending balance at Dec. 31, 2022		15,442	15,448	(6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,841	1,470	1,470
Distributions to parent	(3,138)
Other	(2)	(5)	(5)
Ending balance at Dec. 31, 2023		16,907	16,913	(6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,524	1,883	1,883
Distributions to parent	(3,204)	(950)	(950)
Other	$ (2)
Ending balance at Dec. 31, 2024		$ 17,840	$ 17,846	$ (6)

Condensed Consolidated State_10

Condensed Consolidated Statements of Operations and Comprehensive Income - Progress Energy - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Revenues		$ 30,357	$ 29,060	$ 28,768
Operating Expenses
Operation, maintenance and other		5,389	5,625	5,734
Depreciation and amortization		5,793	5,253	5,086
Property and other taxes		1,466	1,400	1,466
Impairment of assets and other charges		38	85	434
Total operating expenses		22,457	22,042	22,778
Gains on Sales of Other Assets and Other, net		26	52	22
Operating Income		7,926	7,070	6,012
Other Income and Expenses, net		652	711	505
Interest Expense		3,384	3,014	2,439
Income From Continuing Operations Before Income Taxes		5,194	4,767	4,078
Income Tax Expense From Continuing Operations		590	438	300
Net Income Attributable to Duke Energy Corporation		4,524	2,841	2,550
Pension and OPEB adjustments	[1]	8	(1)	(19)
Net unrealized gains on cash flow hedges	[1]	209	63	285
Unrealized gains (losses) on available-for-sale securities	[1]	(2)	8	(21)
Other comprehensive income (loss)	[1]	234	134	174
Comprehensive Income		4,848	3,008	2,629
Progress Energy
Operating Revenues		13,633	13,544	13,125
Operating Expenses
Cost of sales		4,755	5,026	5,078
Operation, maintenance and other		2,463	2,636	2,458
Depreciation and amortization		2,393	2,151	2,142
Property and other taxes		617	644	607
Impairment of assets and other charges		6	28	12
Total operating expenses		10,234	10,485	10,297
Gains on Sales of Other Assets and Other, net		27	27	11
Operating Income		3,426	3,086	2,839
Other Income and Expenses, net		235	201	181
Interest Expense		1,064	954	844
Income From Continuing Operations Before Income Taxes		2,597	2,333	2,176
Income Tax Expense From Continuing Operations		426	377	348
Net Income Attributable to Duke Energy Corporation		2,171	1,956	1,828
Pension and OPEB adjustments		0	(2)	5
Net unrealized gains on cash flow hedges		0	0	1
Unrealized gains (losses) on available-for-sale securities		0	3	(6)
Other comprehensive income (loss)		0	1	0
Comprehensive Income		$ 2,171	$ 1,957	$ 1,828
[1]Net of income tax expense of app roximately $70 million, $40 million and $52 million for the years ended December 31, 2024, 2023 and 2022, respectively.

Condensed Consolidated Balanc_5

Condensed Consolidated Balance Sheets - Progress Energy - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 314	$ 253
Receivables of VIEs (net of allowance for doubtful accounts)	2,232	1,112
Receivables (net of allowance for doubtful accounts)	1,889	3,019
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Other (includes amounts related to VIEs)	695	431
Total current assets	12,950	12,769
Property, Plant and Equipment
Cost	180,806	171,353
Accumulated depreciation and amortization	(57,503)	(56,038)
Net property, plant and equipment	123,303	115,315
Other Noncurrent Assets
Goodwill	19,303	19,303
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Nuclear decommissioning trust funds	11,434	10,143
Operating lease right-of-use assets, net	1,148	1,092
Other (including amounts related to VIEs)	3,509	3,964
Total other noncurrent assets	50,090	48,809
Total Assets	186,343	176,893
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	5,479	4,228
Taxes accrued	851	816
Interest accrued	855	745
Current maturities of long-term debt	4,349	2,800
Asset retirement obligations	650	596
Regulatory liabilities	1,425	1,369
Other	2,084	2,319
Total current liabilities	19,357	17,283
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Other Noncurrent Liabilities
Deferred income taxes	11,424	10,556
Total noncurrent asset retirement obligation	9,342	8,560
Total noncurrent regulatory liabilities	14,694	14,039
Operating lease liabilities	957	917
Accrued pension and other post-retirement benefit costs	434	485
Investment tax credits	894	864
Other noncurrent liabilities	1,556	1,393
Total other noncurrent liabilities	39,390	36,971
Commitments and Contingencies
Equity
Common stock	1	1
Additional paid-in capital	45,494	44,920
Retained earnings	3,431	2,235
Accumulated other comprehensive income (loss)	228	(6)
Total Duke Energy Corporation stockholders' equity	50,127	49,112
Noncontrolling interests	1,129	1,075
Total equity	51,256	50,187
Total Liabilities and Equity	186,343	176,893
Consolidated VIEs
Current Assets
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	120	110
Other (includes amounts related to VIEs)	90
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	214	188
Current maturities of long-term debt	1,012	428
Long-Term Debt (includes amounts related to VIEs)	1,842	3,000
Other Noncurrent Liabilities
Other noncurrent liabilities	27	35
Progress Energy
Current Assets
Cash and cash equivalents	73	59
Receivables of VIEs (net of allowance for doubtful accounts)	707	225
Receivables (net of allowance for doubtful accounts)	835	1,365
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	2,086	1,901
Regulatory assets	1,647	1,661
Other (includes amounts related to VIEs)	182	134
Total current assets	5,555	5,435
Property, Plant and Equipment
Cost	72,560	67,644
Accumulated depreciation and amortization	(23,586)	(22,300)
Net property, plant and equipment	48,974	45,344
Other Noncurrent Assets
Goodwill	3,655	3,655
Other Noncurrent Assets: Regulatory assets	6,618	6,430
Nuclear decommissioning trust funds	4,967	4,457
Operating lease right-of-use assets, net	625	617
Other (including amounts related to VIEs)	1,242	1,156
Total other noncurrent assets	17,107	16,315
Total Assets	71,636	67,094
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	2,170	1,374
Taxes accrued	312	259
Interest accrued	232	224
Current maturities of long-term debt	1,517	661
Asset retirement obligations	231	245
Regulatory liabilities	522	418
Other	792	860
Total current liabilities	7,360	5,548
Long-Term Debt (includes amounts related to VIEs)	22,829	22,948
Other Noncurrent Liabilities
Deferred income taxes	5,263	5,197
Total noncurrent asset retirement obligation	4,317	3,900
Total noncurrent regulatory liabilities	5,258	5,083
Operating lease liabilities	557	544
Accrued pension and other post-retirement benefit costs	254	266
Investment tax credits	385	371
Other noncurrent liabilities	357	227
Total other noncurrent liabilities	16,391	15,588
Commitments and Contingencies
Equity
Common stock	0	0
Additional paid-in capital	11,830	11,830
Retained earnings	13,086	11,040
Accumulated other comprehensive income (loss)	(10)	(10)
Total Duke Energy Corporation stockholders' equity	24,906	22,860
Total equity	24,906	22,860
Total Liabilities and Equity	71,636	67,094
Progress Energy | Consolidated VIEs
Current Assets
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	108	98
Other (includes amounts related to VIEs)	75	68
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	1,516	1,446
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	208	188
Current maturities of long-term debt	502	418
Long-Term Debt (includes amounts related to VIEs)	1,582	1,910
Other Noncurrent Liabilities
Other noncurrent liabilities	11	19
Progress Energy | Affiliated entity
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	25	90
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	507	464
Notes payable to affiliated companies	1,077	1,043
Long-Term Debt (includes amounts related to VIEs)	$ 150	$ 150

Condensed Consolidated Balanc_6

Condensed Consolidated Balance Sheets - Progress Energy (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts - receivables	$ 124	$ 55
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Accounts payable	5,479	4,228
Current Assets: Other	695	431
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Current maturities of long-term debt	4,349	2,800
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Other (includes $54 at 2023 related to VIEs)	$ 1,556	$ 1,393
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares outstanding (in shares)	776,000,000	771,000,000
Consolidated VIEs
Allowance for doubtful accounts - receivables of VIEs	$ 85	$ 150
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	120	110
Accounts payable	214	188
Current Assets: Other	90
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Current maturities of long-term debt	1,012	428
Long-Term Debt (includes amounts related to VIEs)	1,842	3,000
Other (includes $54 at 2023 related to VIEs)	27	35
Progress Energy
Allowance for doubtful accounts - receivables	39	18
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	2,086	1,901
Regulatory assets	1,647	1,661
Accounts payable	2,170	1,374
Current Assets: Other	182	134
Other Noncurrent Assets: Regulatory assets	6,618	6,430
Current maturities of long-term debt	1,517	661
Long-Term Debt (includes amounts related to VIEs)	22,829	22,948
Other (includes $54 at 2023 related to VIEs)	$ 357	$ 227
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100	100
Common stock, shares outstanding (in shares)	100	100
Progress Energy | Consolidated VIEs
Allowance for doubtful accounts - receivables of VIEs	$ 34	$ 56
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	108	98
Accounts payable	208	188
Current Assets: Other	75	68
Other Noncurrent Assets: Regulatory assets	1,516	1,446
Current maturities of long-term debt	502	418
Long-Term Debt (includes amounts related to VIEs)	1,582	1,910
Other (includes $54 at 2023 related to VIEs)	$ 11	$ 19

Condensed Consolidated State_11

Condensed Consolidated Statements of Cash Flows - Progress Energy - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 4,614	$ 2,874	$ 2,455
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	6,419	6,084	5,843
Equity component of AFUDC	(233)	(198)	(197)
Gains on sales of other assets	(26)	(52)	(22)
Deferred income taxes	987	3	(200)
Contributions to qualified pension plans	(100)	(100)	(58)
Payments for asset retirement obligations	(545)	(632)	(584)
Provision for rate refunds	(27)	(63)	(130)
(Increase) decrease in
Receivables	(23)	443	(788)
Inventory	(212)	(706)	(476)
Other current assets	885	(267)	(1,498)
Increase (decrease) in
Accounts payable	1,329	(800)	805
Taxes accrued	32	126	10
Other current liabilities	(11)	(26)	(153)
Other assets	(1,170)	914	(1,577)
Other liabilities	451	584	410
Net cash provided by operating activities	12,328	9,878	5,927
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,280)	(12,604)	(11,367)
Purchases of debt and equity securities	(5,703)	(3,761)	(4,243)
Proceeds from sales and maturities of debt and equity securities	5,803	3,824	4,333
Proceeds from the sales of other assets	49	149	83
Other	(1,009)	(799)	(727)
Net cash used in investing activities	(13,123)	(12,475)	(11,973)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	8,956	10,028	11,874
Payments for the redemption of long-term debt	(3,357)	(4,737)	(4,396)
Other	(52)	(124)	(130)
Net cash provided by financing activities	859	2,351	6,129
Net increase (decrease) in cash, cash equivalents and restricted cash	64	(246)	83
Cash, cash equivalents and restricted cash at beginning of period	357	603	520
Cash, cash equivalents and restricted cash at end of period	421	357	603
Supplemental Disclosures:
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(400)	1	(6)
Cash paid for interest, net of amount capitalized	3,284	2,883	2,361
Significant non-cash transactions:
Accrued capital expenditures	1,909	1,908	1,766
Progress Energy
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	2,171	1,956	1,828
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	2,761	2,721	2,405
Equity component of AFUDC	(74)	(67)	(68)
Gains on sales of other assets	(27)	(27)	(11)
Deferred income taxes	33	(120)	364
Contributions to qualified pension plans	(23)	(22)	(13)
Payments for asset retirement obligations	(279)	(329)	(291)
Provision for rate refunds	(2)	(24)	(58)
(Increase) decrease in
Receivables	25	21	(322)
Receivables from affiliated companies	65	(68)	117
Inventory	(172)	(322)	(183)
Other current assets	81	287	(937)
Increase (decrease) in
Accounts payable	867	(266)	222
Accounts payable to affiliated companies	43	(248)	206
Taxes accrued	49	124	8
Other current liabilities	164	9	96
Other assets	(723)	357	(1,105)
Other liabilities	94	108	573
Net cash provided by operating activities	5,059	4,118	2,843
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(5,252)	(4,917)	(4,317)
Purchases of debt and equity securities	(2,703)	(1,590)	(1,341)
Proceeds from sales and maturities of debt and equity securities	2,809	1,663	1,417
Other	(463)	(329)	(137)
Net cash used in investing activities	(5,609)	(5,173)	(4,378)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	1,134	2,555	2,775
Payments for the redemption of long-term debt	(467)	(1,248)	(1,173)
Notes payable to affiliated companies	34	200	465
Dividends to parent	(125)	(500)	(425)
Other	(1)	(1)	(36)
Net cash provided by financing activities	575	1,006	1,606
Net increase (decrease) in cash, cash equivalents and restricted cash	25	(49)	71
Cash, cash equivalents and restricted cash at beginning of period	135	184	113
Cash, cash equivalents and restricted cash at end of period	160	135	184
Supplemental Disclosures:
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	315	310	79
Cash paid for interest, net of amount capitalized	1,078	954	854
Significant non-cash transactions:
Accrued capital expenditures	$ 745	$ 806	$ 663

Condensed Consolidated State_12

Condensed Consolidated Statements of Changes in Equity - Progress Energy - USD ($) $ in Millions	Total		Total Equity	Additional Paid-in Capital	Retained Earnings	Net Unrealized Gains (Losses) on Available-for-Sale Securities	Pension and OPEB Adjustments	Noncontrolling Interests	Progress Energy	Progress Energy Total Equity	Progress Energy Additional Paid-in Capital	Progress Energy Retained Earnings	Progress Energy Net Gains (Losses) on Cash Flow Hedges	Progress Energy Net Unrealized Gains (Losses) on Available-for-Sale Securities	Progress Energy Pension and OPEB Adjustments	Progress Energy Noncontrolling Interests
Beginning Balance (Attributable to Parent) at Dec. 31, 2021			$ 49,296	$ 44,371	$ 3,265	$ (2)	$ (69)			$ 17,145	$ 9,149	$ 8,007	$ (2)	$ (2)	$ (7)
Beginning Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2021								$ 1,840								$ 3
Beginning Balance (Parent) at Dec. 31, 2021	$ 51,136								$ 17,148
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,455								1,828	1,828		1,828
Other comprehensive income (loss)	174	[1]	163			(21)	(19)	11	0				1	(6)	5
Distributions to noncontrolling interests	(140)							(140)	(34)							(34)
Common stock dividends	(3,073)		(3,073)		(3,073)				(425)	(425)	(175)	(250)
Equitization of certain notes payable to affiliates									2,907	2,907	2,907
Purchase of noncontrolling interest	(20)		(51)	(51)				31	(20)	(51)	(51)					31
Other	3		2	1	1			1	2	2	2
Ending Balance (Attributable to Parent) at Dec. 31, 2022			49,322	44,862	2,637	(23)	(88)			21,406	11,832	9,585	(1)	(8)	(2)
Ending Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2022								2,531
Ending Balance (Parent) at Dec. 31, 2022	51,853								21,406
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,874								1,956	1,956		1,956
Other comprehensive income (loss)	134	[1]	134			8	(1)	0	1	1				3	(2)
Distributions to noncontrolling interests	(59)							(59)
Common stock dividends	(3,138)		(3,138)		(3,138)				(500)	(500)		(500)
Other	(2)		(6)	(7)	1			4	(3)	(3)	(2)
Ending Balance (Attributable to Parent) at Dec. 31, 2023	49,112		49,112	44,920	2,235	(15)	(89)		22,860	22,860	11,830	11,040	(1)	(5)	(4)
Ending Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2023	1,075							1,075								0
Ending Balance (Parent) at Dec. 31, 2023	50,187								22,860
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,614								2,171	2,171		2,171
Other comprehensive income (loss)	234	[1]	234			(2)	8		0
Distributions to noncontrolling interests	(32)							(32)
Common stock dividends	(3,204)		(3,204)		(3,204)				(125)	(125)		(125)
Other	(2)		(2)		(2)			0
Ending Balance (Attributable to Parent) at Dec. 31, 2024	50,127		$ 50,127	$ 45,494	$ 3,431	$ (17)	$ (81)		24,906	$ 24,906	$ 11,830	$ 13,086	$ (1)	$ (5)	$ (4)
Ending Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2024	1,129							$ 1,129								$ 0
Ending Balance (Parent) at Dec. 31, 2024	$ 51,256								$ 24,906
[1]Net of income tax expense of app roximately $70 million, $40 million and $52 million for the years ended December 31, 2024, 2023 and 2022, respectively.

Condensed Consolidated State_13

Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Progress - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Revenues	$ 30,357	$ 29,060	$ 28,768
Operating Expenses
Operation, maintenance and other	5,389	5,625	5,734
Depreciation and amortization	5,793	5,253	5,086
Property and other taxes	1,466	1,400	1,466
Impairment of assets and other charges	38	85	434
Total operating expenses	22,457	22,042	22,778
Gains on Sales of Other Assets and Other, net	26	52	22
Operating Income	7,926	7,070	6,012
Other Income and Expenses, net	652	711	505
Interest Expense	3,384	3,014	2,439
Income From Continuing Operations Before Income Taxes	5,194	4,767	4,078
Income Tax Expense	590	438	300
Comprehensive Income Attributable to Duke Energy Corporation	4,758	2,975	2,713
Net Income Attributable to Duke Energy Corporation	4,524	2,841	2,550
Duke Energy Progress
Operating Revenues	7,017	6,488	6,753
Operating Expenses
Cost of sales	2,409	2,203	2,492
Operation, maintenance and other	1,388	1,379	1,475
Depreciation and amortization	1,336	1,266	1,187
Property and other taxes	177	164	190
Impairment of assets and other charges	6	29	7
Total operating expenses	5,316	5,041	5,351
Gains on Sales of Other Assets and Other, net	2	3	4
Operating Income	1,703	1,450	1,406
Other Income and Expenses, net	143	124	114
Interest Expense	493	427	354
Income From Continuing Operations Before Income Taxes	1,353	1,147	1,166
Income Tax Expense	189	149	158
Comprehensive Income Attributable to Duke Energy Corporation	1,164	998	1,008
Net Income Attributable to Duke Energy Corporation	$ 1,164	$ 998	$ 1,008

Condensed Consolidated Balanc_7

Condensed Consolidated Balance Sheets - Duke Energy Progress - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 314	$ 253
Receivables of VIEs (net of allowance for doubtful accounts)	2,232	1,112
Receivables (net of allowance for doubtful accounts)	1,889	3,019
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Other (includes amounts related to VIEs)	695	431
Total current assets	12,950	12,769
Property, Plant and Equipment
Cost	180,806	171,353
Accumulated depreciation and amortization	(57,503)	(56,038)
Net property, plant and equipment	123,303	115,315
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Nuclear decommissioning trust funds	11,434	10,143
Operating lease right-of-use assets, net	1,148	1,092
Other (including amounts related to VIEs)	3,509	3,964
Total other noncurrent assets	50,090	48,809
Total Assets	186,343	176,893
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	5,479	4,228
Taxes accrued	851	816
Interest accrued	855	745
Current maturities of long-term debt	4,349	2,800
Asset retirement obligations	650	596
Regulatory liabilities	1,425	1,369
Other	2,084	2,319
Total current liabilities	19,357	17,283
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Other Noncurrent Liabilities
Deferred income taxes	11,424	10,556
Total noncurrent asset retirement obligation	9,342	8,560
Total noncurrent regulatory liabilities	14,694	14,039
Operating lease liabilities	957	917
Accrued pension and other post-retirement benefit costs	434	485
Investment tax credits	894	864
Other noncurrent liabilities	1,556	1,393
Total other noncurrent liabilities	39,390	36,971
Commitments and Contingencies
Equity
Total Liabilities and Equity	186,343	176,893
Consolidated VIEs
Current Assets
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	120	110
Other (includes amounts related to VIEs)	90
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	214	188
Current maturities of long-term debt	1,012	428
Long-Term Debt (includes amounts related to VIEs)	1,842	3,000
Other Noncurrent Liabilities
Other noncurrent liabilities	27	35
Duke Energy Progress
Current Assets
Cash and cash equivalents	24	18
Receivables of VIEs (net of allowance for doubtful accounts)	160	139
Receivables (net of allowance for doubtful accounts)	835	833
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	1,341	1,227
Regulatory assets	626	942
Other (includes amounts related to VIEs)	104	72
Total current assets	3,100	3,247
Property, Plant and Equipment
Cost	42,060	39,283
Accumulated depreciation and amortization	(15,930)	(15,227)
Net property, plant and equipment	26,130	24,056
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	4,555	4,546
Nuclear decommissioning trust funds	4,636	4,075
Operating lease right-of-use assets, net	348	318
Other (including amounts related to VIEs)	724	682
Total other noncurrent assets	10,263	9,621
Total Assets	39,493	36,924
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	749	634
Taxes accrued	394	176
Interest accrued	122	114
Current maturities of long-term debt	983	72
Asset retirement obligations	230	244
Regulatory liabilities	348	300
Other	427	481
Total current liabilities	4,170	3,244
Long-Term Debt (includes amounts related to VIEs)	11,371	11,492
Other Noncurrent Liabilities
Deferred income taxes	2,344	2,560
Total noncurrent asset retirement obligation	4,104	3,626
Total noncurrent regulatory liabilities	4,570	4,375
Operating lease liabilities	332	293
Accrued pension and other post-retirement benefit costs	141	146
Investment tax credits	144	129
Other noncurrent liabilities	196	102
Total other noncurrent liabilities	11,831	11,231
Commitments and Contingencies
Equity
Total member's equity	11,971	10,807
Total Liabilities and Equity	39,493	36,924
Duke Energy Progress | Consolidated VIEs
Current Assets
Regulatory assets	47	39
Other (includes amounts related to VIEs)	40	31
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	775	643
Current Liabilities
Current maturities of long-term debt	443	34
Long-Term Debt (includes amounts related to VIEs)	809	1,079
Other Noncurrent Liabilities
Other noncurrent liabilities	11	12
Duke Energy Progress | Affiliated entity
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	10	16
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	306	332
Notes payable to affiliated companies	611	891
Long-Term Debt (includes amounts related to VIEs)	$ 150	$ 150

Condensed Consolidated Balanc_8

Condensed Consolidated Balance Sheets - Duke Energy Progress (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts - receivables	$ 124	$ 55
Regulatory assets	2,756	3,648
Current Assets: Other	695	431
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Current maturities of long-term debt	4,349	2,800
Long-Term Debt	76,340	72,452
Other (includes $54 at 2023 related to VIEs)	1,556	1,393
Consolidated VIEs
Allowance for doubtful accounts - receivables of VIEs	85	150
Regulatory assets	120	110
Current Assets: Other	90
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Current maturities of long-term debt	1,012	428
Long-Term Debt	1,842	3,000
Other (includes $54 at 2023 related to VIEs)	27	35
Duke Energy Progress
Allowance for doubtful accounts - receivables	10	8
Regulatory assets	626	942
Current Assets: Other	104	72
Other Noncurrent Assets: Regulatory assets	4,555	4,546
Current maturities of long-term debt	983	72
Long-Term Debt	11,371	11,492
Other (includes $54 at 2023 related to VIEs)	196	102
Duke Energy Progress | Consolidated VIEs
Allowance for doubtful accounts - receivables of VIEs	34	36
Regulatory assets	47	39
Current Assets: Other	40	31
Other Noncurrent Assets: Regulatory assets	775	643
Current maturities of long-term debt	443	34
Long-Term Debt	809	1,079
Other (includes $54 at 2023 related to VIEs)	$ 11	$ 12

Condensed Consolidated State_14

Condensed Consolidated Statements of Cash Flows - Duke Energy Progress - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 4,614	$ 2,874	$ 2,455
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	6,419	6,084	5,843
Equity component of AFUDC	(233)	(198)	(197)
Impairment of assets and other charges	38	85	434
Deferred income taxes	987	3	(200)
Contributions to qualified pension plans	(100)	(100)	(58)
Payments for asset retirement obligations	(545)	(632)	(584)
Provision for rate refunds	(27)	(63)	(130)
(Increase) decrease in
Receivables	(23)	443	(788)
Inventory	(212)	(706)	(476)
Other current assets	885	(267)	(1,498)
Increase (decrease) in
Accounts payable	1,329	(800)	805
Taxes accrued	32	126	10
Other current liabilities	(11)	(26)	(153)
Other assets	(1,170)	914	(1,577)
Other liabilities	451	584	410
Net cash provided by operating activities	12,328	9,878	5,927
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,280)	(12,604)	(11,367)
Purchases of debt and equity securities	(5,703)	(3,761)	(4,243)
Proceeds from sales and maturities of debt and equity securities	5,803	3,824	4,333
Other	(1,009)	(799)	(727)
Net cash used in investing activities	(13,123)	(12,475)	(11,973)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	8,956	10,028	11,874
Payments for the redemption of long-term debt	(3,357)	(4,737)	(4,396)
Other	(52)	(124)	(130)
Net cash provided by financing activities	859	2,351	6,129
Net increase (decrease) in cash, cash equivalents and restricted cash	64	(246)	83
Cash, cash equivalents and restricted cash at beginning of period	357	603	520
Cash, cash equivalents and restricted cash at end of period	421	357	603
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	3,284	2,883	2,361
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(400)	1	(6)
Significant non-cash transactions:
Accrued capital expenditures	1,909	1,908	1,766
Duke Energy Progress
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	1,164	998	1,008
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	1,520	1,460	1,371
Equity component of AFUDC	(61)	(52)	(52)
Impairment of assets and other charges	6	29	7
Deferred income taxes	(224)	(53)	121
Contributions to qualified pension plans	(14)	(13)	(8)
Payments for asset retirement obligations	(197)	(249)	(193)
Provision for rate refunds	(2)	(24)	(58)
(Increase) decrease in
Receivables	(11)	(10)	(228)
Receivables from affiliated companies	6	9	58
Inventory	(114)	(221)	(85)
Other current assets	375	(252)	(207)
Increase (decrease) in
Accounts payable	63	(26)	20
Accounts payable to affiliated companies	(26)	(176)	198
Taxes accrued	217	99	(86)
Other current liabilities	133	13	13
Other assets	(426)	173	(416)
Other liabilities	81	29	38
Net cash provided by operating activities	2,490	1,734	1,501
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(2,803)	(2,387)	(2,070)
Purchases of debt and equity securities	(2,480)	(1,406)	(1,148)
Proceeds from sales and maturities of debt and equity securities	2,480	1,402	1,138
Other	(172)	(144)	(29)
Net cash used in investing activities	(2,975)	(2,535)	(2,109)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	855	991	1,477
Payments for the redemption of long-term debt	(72)	(369)	(645)
Notes payable to affiliated companies	(280)	652	67
Distributions to parent	0	(500)	(250)
Other	0	(1)	(1)
Net cash provided by financing activities	503	773	648
Net increase (decrease) in cash, cash equivalents and restricted cash	18	(28)	40
Cash, cash equivalents and restricted cash at beginning of period	51	79	39
Cash, cash equivalents and restricted cash at end of period	69	51	79
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	522	447	386
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	192	73	157
Significant non-cash transactions:
Accrued capital expenditures	$ 374	$ 313	$ 269

Condensed Consolidated State_15

Condensed Consolidated Statements of Changes in Equity - Duke Energy Progress - USD ($) $ in Millions	Total	Duke Energy Progress	Duke Energy Progress Member's Equity
Beginning balance at Dec. 31, 2021			$ 9,551
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 2,550	$ 1,008	1,008
Distributions to parent	(3,073)		(250)
Ending balance at Dec. 31, 2022			10,309
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,841	998	998
Distributions to parent	(3,138)		(500)
Ending balance at Dec. 31, 2023		10,807	10,807
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,524	1,164	1,164
Distributions to parent	$ (3,204)
Ending balance at Dec. 31, 2024		$ 11,971	$ 11,971

Condensed Consolidated State_16

Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Florida - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Revenues		$ 30,357	$ 29,060	$ 28,768
Operating Expenses
Operation, maintenance and other		5,389	5,625	5,734
Depreciation and amortization		5,793	5,253	5,086
Property and other taxes		1,466	1,400	1,466
Impairment of assets and other charges		38	85	434
Total operating expenses		22,457	22,042	22,778
Gains on Sales of Other Assets and Other, net		26	52	22
Operating Income		7,926	7,070	6,012
Other Income and Expenses, net		652	711	505
Interest Expense		3,384	3,014	2,439
Income From Continuing Operations Before Income Taxes		5,194	4,767	4,078
Income Tax Expense		590	438	300
Net Income Attributable to Duke Energy Corporation		4,524	2,841	2,550
Unrealized gains (losses) on available-for-sale securities	[1]	(2)	8	(21)
Other Comprehensive Income, net of tax	[1]	234	134	174
Comprehensive Income Attributable to Duke Energy Corporation		4,758	2,975	2,713
Duke Energy Florida
Operating Revenues		6,595	7,036	6,353
Operating Expenses
Cost of sales		2,346	2,823	2,586
Operation, maintenance and other		1,055	1,239	967
Depreciation and amortization		1,057	885	955
Property and other taxes		440	480	421
Impairment of assets and other charges		0	(1)	4
Total operating expenses		4,898	5,426	4,933
Gains on Sales of Other Assets and Other, net		3	2	2
Operating Income		1,700	1,612	1,422
Other Income and Expenses, net		86	78	74
Interest Expense		457	413	362
Income From Continuing Operations Before Income Taxes		1,329	1,277	1,134
Income Tax Expense		268	261	225
Net Income Attributable to Duke Energy Corporation		1,061	1,016	909
Unrealized gains (losses) on available-for-sale securities		0	3	(5)
Other Comprehensive Income, net of tax		0	3	(5)
Comprehensive Income Attributable to Duke Energy Corporation		$ 1,061	$ 1,019	$ 904
[1]Net of income tax expense of app roximately $70 million, $40 million and $52 million for the years ended December 31, 2024, 2023 and 2022, respectively.

Condensed Consolidated Balanc_9

Condensed Consolidated Balance Sheets - Duke Energy Florida - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 314	$ 253
Receivables of VIEs (net of allowance for doubtful accounts)	2,232	1,112
Receivables (net of allowance for doubtful accounts)	1,889	3,019
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Other (includes amounts related to VIEs)	695	431
Total current assets	12,950	12,769
Property, Plant and Equipment
Cost	180,806	171,353
Accumulated depreciation and amortization	(57,503)	(56,038)
Net property, plant and equipment	123,303	115,315
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Nuclear decommissioning trust funds	11,434	10,143
Operating lease right-of-use assets, net	1,148	1,092
Other (including amounts related to VIEs)	3,509	3,964
Total other noncurrent assets	50,090	48,809
Total Assets	186,343	176,893
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	5,479	4,228
Taxes accrued	851	816
Interest accrued	855	745
Current maturities of long-term debt	4,349	2,800
Asset retirement obligations	650	596
Regulatory liabilities	1,425	1,369
Other	2,084	2,319
Total current liabilities	19,357	17,283
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Other Noncurrent Liabilities
Deferred income taxes	11,424	10,556
Total noncurrent asset retirement obligation	9,342	8,560
Total noncurrent regulatory liabilities	14,694	14,039
Operating lease liabilities	957	917
Accrued pension and other post-retirement benefit costs	434	485
Investment tax credits	894	864
Other noncurrent liabilities	1,556	1,393
Total other noncurrent liabilities	39,390	36,971
Commitments and Contingencies
Equity
Accumulated other comprehensive income (loss)	228	(6)
Total Liabilities and Equity	186,343	176,893
Consolidated VIEs
Current Assets
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	120	110
Other (includes amounts related to VIEs)	90
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	214	188
Current maturities of long-term debt	1,012	428
Long-Term Debt (includes amounts related to VIEs)	1,842	3,000
Other Noncurrent Liabilities
Other noncurrent liabilities	27	35
Duke Energy Florida
Current Assets
Cash and cash equivalents	33	24
Receivables of VIEs (net of allowance for doubtful accounts)	544	83
Receivables (net of allowance for doubtful accounts)	0	532
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	745	674
Regulatory assets	1,022	720
Other (includes amounts related to VIEs)	227	51
Total current assets	2,592	2,322
Property, Plant and Equipment
Cost	30,490	28,353
Accumulated depreciation and amortization	(7,650)	(7,067)
Net property, plant and equipment	22,840	21,286
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	2,064	1,883
Nuclear decommissioning trust funds	331	382
Operating lease right-of-use assets, net	277	299
Other (including amounts related to VIEs)	465	429
Total other noncurrent assets	3,137	2,993
Total Assets	28,569	26,601
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	1,418	738
Taxes accrued	60	185
Interest accrued	86	86
Current maturities of long-term debt	534	589
Asset retirement obligations	1	1
Regulatory liabilities	174	118
Other	342	350
Total current liabilities	3,148	2,354
Long-Term Debt (includes amounts related to VIEs)	9,814	9,812
Other Noncurrent Liabilities
Deferred income taxes	3,024	2,733
Total noncurrent asset retirement obligation	213	274
Total noncurrent regulatory liabilities	688	708
Operating lease liabilities	225	251
Accrued pension and other post-retirement benefit costs	92	98
Investment tax credits	241	242
Other noncurrent liabilities	143	86
Total other noncurrent liabilities	4,626	4,392
Commitments and Contingencies
Equity
Member's equity	10,986	10,048
Accumulated other comprehensive income (loss)	(5)	(5)
Total member's equity	10,981	10,043
Total Liabilities and Equity	28,569	26,601
Duke Energy Florida | Consolidated VIEs
Current Assets
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	61	59
Other (includes amounts related to VIEs)	35	37
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	741	803
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	208	188
Current maturities of long-term debt	59	384
Long-Term Debt (includes amounts related to VIEs)	773	831
Duke Energy Florida | Affiliated entity
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	21	238
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	67	135
Notes payable to affiliated companies	$ 466	$ 152

Condensed Consolidated Balan_10

Condensed Consolidated Balance Sheets - Duke Energy Florida (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts - receivables	$ 124	$ 55
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Current Assets: Other	695	431
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Accounts payable	5,479	4,228
Current maturities of long-term debt	4,349	2,800
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Other (includes $54 at 2023 related to VIEs)	1,556	1,393
Consolidated VIEs
Allowance for doubtful accounts - receivables of VIEs	85	150
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	120	110
Current Assets: Other	90
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Accounts payable	214	188
Current maturities of long-term debt	1,012	428
Long-Term Debt (includes amounts related to VIEs)	1,842	3,000
Other (includes $54 at 2023 related to VIEs)	27	35
Duke Energy Florida
Allowance for doubtful accounts - receivables	29	11
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	745	674
Regulatory assets	1,022	720
Current Assets: Other	227	51
Other Noncurrent Assets: Regulatory assets	2,064	1,883
Accounts payable	1,418	738
Current maturities of long-term debt	534	589
Long-Term Debt (includes amounts related to VIEs)	9,814	9,812
Other (includes $54 at 2023 related to VIEs)	143	86
Duke Energy Florida | Consolidated VIEs
Allowance for doubtful accounts - receivables of VIEs		20
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Regulatory assets	61	59
Current Assets: Other	35	37
Other Noncurrent Assets: Regulatory assets	741	803
Accounts payable	208	188
Current maturities of long-term debt	59	384
Long-Term Debt (includes amounts related to VIEs)	$ 773	$ 831

Condensed Consolidated State_17

Condensed Consolidated Statements of Cash Flows - Duke Energy Florida - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 4,614	$ 2,874	$ 2,455
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	6,419	6,084	5,843
Equity component of AFUDC	(233)	(198)	(197)
Gains on sales of other assets	(26)	(52)	(22)
Impairment of assets and other charges	38	85	434
Deferred income taxes	987	3	(200)
Contributions to qualified pension plans	(100)	(100)	(58)
Payments for asset retirement obligations	(545)	(632)	(584)
Provision for rate refunds	(27)	(63)	(130)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	(103)	(18)	19
Receivables	(23)	443	(788)
Inventory	(212)	(706)	(476)
Other current assets	885	(267)	(1,498)
Increase (decrease) in
Accounts payable	1,329	(800)	805
Taxes accrued	32	126	10
Other current liabilities	(11)	(26)	(153)
Other assets	(1,170)	914	(1,577)
Other liabilities	451	584	410
Net cash provided by operating activities	12,328	9,878	5,927
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,280)	(12,604)	(11,367)
Purchases of debt and equity securities	(5,703)	(3,761)	(4,243)
Proceeds from sales and maturities of debt and equity securities	5,803	3,824	4,333
Proceeds from the sales of other assets	49	149	83
Other	(1,009)	(799)	(727)
Net cash used in investing activities	(13,123)	(12,475)	(11,973)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	8,956	10,028	11,874
Payments for the redemption of long-term debt	(3,357)	(4,737)	(4,396)
Other	(52)	(124)	(130)
Net cash provided by financing activities	859	2,351	6,129
Net increase (decrease) in cash, cash equivalents and restricted cash	64	(246)	83
Cash, cash equivalents and restricted cash at beginning of period	357	603	520
Cash, cash equivalents and restricted cash at end of period	421	357	603
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	3,284	2,883	2,361
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(400)	1	(6)
Significant non-cash transactions:
Accrued capital expenditures	1,909	1,908	1,766
Duke Energy Florida
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	1,061	1,016	909
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	1,239	1,260	1,032
Equity component of AFUDC	(13)	(15)	(16)
Impairment of assets and other charges	0	(1)	4
Deferred income taxes	265	(89)	285
Contributions to qualified pension plans	(9)	(9)	(5)
Payments for asset retirement obligations	(82)	(80)	(98)
(Increase) decrease in
Receivables	37	30	(93)
Receivables from affiliated companies	217	(236)	14
Inventory	(58)	(101)	(98)
Other current assets	(456)	496	(640)
Increase (decrease) in
Accounts payable	803	(241)	202
Accounts payable to affiliated companies	(68)	(42)	(32)
Taxes accrued	(129)	132	2
Other current liabilities	37	3	62
Other assets	(312)	163	(704)
Other liabilities	38	101	18
Net cash provided by operating activities	2,570	2,387	842
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(2,449)	(2,529)	(2,247)
Purchases of debt and equity securities	(223)	(184)	(193)
Proceeds from sales and maturities of debt and equity securities	330	261	279
Other	(292)	(185)	(108)
Net cash used in investing activities	(2,634)	(2,637)	(2,269)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	279	1,564	1,298
Payments for the redemption of long-term debt	(395)	(879)	(77)
Notes payable to affiliated companies	314	(453)	406
Distributions to parent	(125)	0	(175)
Other	(1)	(1)	(1)
Net cash provided by financing activities	72	231	1,451
Net increase (decrease) in cash, cash equivalents and restricted cash	8	(19)	24
Cash, cash equivalents and restricted cash at beginning of period	67	86	62
Cash, cash equivalents and restricted cash at end of period	75	67	86
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	442	394	339
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	270	219	(83)
Significant non-cash transactions:
Accrued capital expenditures	$ 371	$ 493	$ 394

Condensed Consolidated State_18

Condensed Consolidated Statements of Changes in Equity - Duke Energy Florida - USD ($) $ in Millions	Total		Duke Energy Florida	Duke Energy Florida Member's Equity	Duke Energy Florida Net Unrealized Gains (Losses) on Available-for-Sale Securities
Beginning balance at Dec. 31, 2021			$ 8,295	$ 8,298	$ (3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 2,550		909	909
Other comprehensive income (loss)	(21)	[1]	(5)		(5)
Distributions to parent	(3,073)		(175)	(175)
Other	3		(1)	(1)
Ending balance at Dec. 31, 2022			9,023	9,031	(8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,841		1,016	1,016
Other comprehensive income (loss)	8	[1]	3		3
Distributions to parent	(3,138)
Other	(2)		1	1
Ending balance at Dec. 31, 2023			10,043	10,048	(5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,524		1,061	1,061
Other comprehensive income (loss)	(2)	[1]	0
Distributions to parent	(3,204)		(125)	(125)
Other	$ (2)		2	2
Ending balance at Dec. 31, 2024			$ 10,981	$ 10,986	$ (5)
[1]Net of income tax expense of app roximately $70 million, $40 million and $52 million for the years ended December 31, 2024, 2023 and 2022, respectively.

Condensed Consolidated State_19

Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Ohio - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Regulated electric	$ 27,787	$ 26,617	$ 25,759
Regulated natural gas	2,252	2,152	2,724
Total operating revenues	30,357	29,060	28,768
Operating Expenses
Operation, maintenance and other	5,389	5,625	5,734
Depreciation and amortization	5,793	5,253	5,086
Property and other taxes	1,466	1,400	1,466
Impairment of assets and other charges	38	85	434
Total operating expenses	22,457	22,042	22,778
Gains on Sales of Other Assets and Other, net	26	52	22
Operating Income	7,926	7,070	6,012
Other Income and Expenses, net	652	711	505
Interest Expense	3,384	3,014	2,439
Income From Continuing Operations Before Income Taxes	5,194	4,767	4,078
Income Tax Expense From Continuing Operations	590	438	300
Comprehensive Income Attributable to Duke Energy Corporation	4,758	2,975	2,713
Net Income Attributable to Duke Energy Corporation	4,524	2,841	2,550
Fuel used in electric generation and purchased power
Operating Expenses
Cost of sales	9,206	9,086	8,782
Cost of natural gas
Operating Expenses
Cost of sales	565	593	1,276
Duke Energy Ohio
Regulated electric	1,905	1,868	1,798
Regulated natural gas	640	639	716
Total operating revenues	2,545	2,507	2,514
Operating Expenses
Operation, maintenance and other	485	478	523
Depreciation and amortization	403	367	324
Property and other taxes	400	364	369
Impairment of assets and other charges	0	3	(10)
Total operating expenses	1,968	1,983	2,124
Gains on Sales of Other Assets and Other, net	1	1	1
Operating Income	578	525	391
Other Income and Expenses, net	19	41	19
Interest Expense	192	169	129
Income From Continuing Operations Before Income Taxes	405	397	281
Income Tax Expense From Continuing Operations	64	63	(21)
Comprehensive Income Attributable to Duke Energy Corporation	341	334	302
Net Income Attributable to Duke Energy Corporation	341	334	302
Duke Energy Ohio | Fuel used in electric generation and purchased power
Operating Expenses
Cost of sales	538	608	657
Duke Energy Ohio | Cost of natural gas
Operating Expenses
Cost of sales	$ 142	$ 163	$ 261

Condensed Consolidated Balan_11

Condensed Consolidated Balance Sheets - Duke Energy Ohio - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 314	$ 253
Receivables of VIEs (net of allowance for doubtful accounts)	2,232	1,112
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Other (includes amounts related to VIEs)	695	431
Total current assets	12,950	12,769
Property, Plant and Equipment
Cost	180,806	171,353
Accumulated depreciation and amortization	(57,503)	(56,038)
Net property, plant and equipment	123,303	115,315
Other Noncurrent Assets
Goodwill	19,303	19,303
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Operating lease right-of-use assets, net	1,148	1,092
Other (including amounts related to VIEs)	3,509	3,964
Total other noncurrent assets	50,090	48,809
Total Assets	186,343	176,893
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	5,479	4,228
Taxes accrued	851	816
Interest accrued	855	745
Current maturities of long-term debt	4,349	2,800
Asset retirement obligations	650	596
Regulatory liabilities	1,425	1,369
Other	2,084	2,319
Total current liabilities	19,357	17,283
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Other Noncurrent Liabilities
Deferred income taxes	11,424	10,556
Total noncurrent asset retirement obligation	9,342	8,560
Total noncurrent regulatory liabilities	14,694	14,039
Operating lease liabilities	957	917
Accrued pension and other post-retirement benefit costs	434	485
Other noncurrent liabilities	1,556	1,393
Total other noncurrent liabilities	39,390	36,971
Commitments and Contingencies
Equity
Common stock	1	1
Additional paid-in capital	45,494	44,920
Retained earnings	3,431	2,235
Total Duke Energy Corporation stockholders' equity	50,127	49,112
Total Liabilities and Equity	186,343	176,893
Duke Energy Ohio
Current Assets
Cash and cash equivalents	24	24
Receivables of VIEs (net of allowance for doubtful accounts)	447	112
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	183	179
Regulatory assets	88	73
Other (includes amounts related to VIEs)	30	134
Total current assets	811	761
Property, Plant and Equipment
Cost	13,918	13,210
Accumulated depreciation and amortization	(3,674)	(3,451)
Net property, plant and equipment	10,244	9,759
Other Noncurrent Assets
Goodwill	920	920
Other Noncurrent Assets: Regulatory assets	705	676
Operating lease right-of-use assets, net	6	16
Other (including amounts related to VIEs)	82	84
Total other noncurrent assets	1,713	1,696
Total Assets	12,768	12,216
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	313	338
Taxes accrued	363	316
Interest accrued	49	35
Current maturities of long-term debt	245	0
Asset retirement obligations	8	6
Regulatory liabilities	34	56
Other	67	65
Total current liabilities	1,293	1,500
Other Noncurrent Liabilities
Deferred income taxes	1,314	1,272
Total noncurrent asset retirement obligation	131	130
Total noncurrent regulatory liabilities	465	497
Operating lease liabilities	6	16
Accrued pension and other post-retirement benefit costs	89	97
Other noncurrent liabilities	91	86
Total other noncurrent liabilities	2,096	2,098
Commitments and Contingencies
Equity
Common stock	762	762
Additional paid-in capital	3,118	3,100
Retained earnings	1,579	1,238
Total Duke Energy Corporation stockholders' equity	5,459	5,100
Total Liabilities and Equity	12,768	12,216
Duke Energy Ohio | Affiliated entity
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	11	239
Notes receivable from affiliated companies	28	0
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	52	71
Notes payable to affiliated companies	162	613
Long-Term Debt (includes amounts related to VIEs)	25	25
Duke Energy Ohio | Nonrelated Party
Current Liabilities
Long-Term Debt (includes amounts related to VIEs)	$ 3,895	$ 3,493

Condensed Consolidated Balan_12

Condensed Consolidated Balance Sheets - Duke Energy Ohio (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts - receivables	$ 124	$ 55
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares outstanding (in shares)	776,000,000	771,000,000
Duke Energy Ohio
Allowance for doubtful accounts - receivables	$ 43	$ 9
Common stock, par value (in usd per share)	$ 8.50	$ 8.50
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares outstanding (in shares)	90,000,000	90,000,000

Condensed Consolidated State_20

Condensed Consolidated Statements of Cash Flows - Duke Energy Ohio - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 4,614	$ 2,874	$ 2,455
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	6,419	6,084	5,843
Equity component of AFUDC	(233)	(198)	(197)
Impairment of assets and other charges	38	85	434
Deferred income taxes	987	3	(200)
Equity in losses (earnings) of unconsolidated affiliates	9	(98)	(114)
Contributions to qualified pension plans	(100)	(100)	(58)
Payments for asset retirement obligations	(545)	(632)	(584)
Provision for rate refunds	(27)	(63)	(130)
(Increase) decrease in
Receivables	(23)	443	(788)
Inventory	(212)	(706)	(476)
Other current assets	885	(267)	(1,498)
Increase (decrease) in
Accounts payable	1,329	(800)	805
Taxes accrued	32	126	10
Other current liabilities	(11)	(26)	(153)
Other assets	(1,170)	914	(1,577)
Other liabilities	451	584	410
Net cash provided by operating activities	12,328	9,878	5,927
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,280)	(12,604)	(11,367)
Other	(1,009)	(799)	(727)
Net cash used in investing activities	(13,123)	(12,475)	(11,973)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	8,956	10,028	11,874
Payments for the redemption of long-term debt	(3,357)	(4,737)	(4,396)
Other	(52)	(124)	(130)
Net cash provided by financing activities	859	2,351	6,129
Net increase (decrease) in cash, cash equivalents and restricted cash	64	(246)	83
Cash, cash equivalents and restricted cash at beginning of period	357	603	520
Cash, cash equivalents and restricted cash at end of period	421	357	603
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	3,284	2,883	2,361
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(400)	1	(6)
Significant non-cash transactions:
Accrued capital expenditures	1,909	1,908	1,766
Duke Energy Ohio
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	341	334	302
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	408	371	328
Equity component of AFUDC	(7)	(9)	(7)
Impairment of assets and other charges	0	3	(10)
Deferred income taxes	8	113	(22)
Contributions to qualified pension plans	(5)	(5)	(3)
Payments for asset retirement obligations	(6)	(13)	(12)
Provision for rate refunds	0	0	5
(Increase) decrease in
Receivables	2	(38)	23
Receivables from affiliated companies	57	(40)	(5)
Inventory	(4)	(35)	(28)
Other current assets	78	(23)	(55)
Increase (decrease) in
Accounts payable	(10)	(34)	44
Accounts payable to affiliated companies	(19)	(1)	8
Taxes accrued	47	(1)	42
Other current liabilities	(5)	(54)	(63)
Other assets	45	(24)	(29)
Other liabilities	(25)	(38)	64
Net cash provided by operating activities	905	506	582
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(815)	(939)	(850)
Proceeds from the sales of other assets	0	75	0
Notes receivable from affiliated companies	194	(48)	105
Other	(88)	(67)	(67)
Net cash used in investing activities	(1,097)	(883)	(1,022)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	644	774	50
Payments for the redemption of long-term debt	0	(500)	0
Notes payable to affiliated companies	(451)	116	395
Other	(1)	(5)	(2)
Net cash provided by financing activities	192	385	443
Net increase (decrease) in cash, cash equivalents and restricted cash	0	8	3
Cash, cash equivalents and restricted cash at beginning of period	24	16	13
Cash, cash equivalents and restricted cash at end of period	24	24	16
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	175	158	126
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(79)	58	(35)
Significant non-cash transactions:
Accrued capital expenditures	$ 99	$ 115	$ 123

Condensed Consolidated State_21

Condensed Consolidated Statements of Changes in Equity - Duke Energy Ohio - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Duke Energy Ohio	Duke Energy Ohio Common Stock	Duke Energy Ohio Additional Paid-in Capital	Duke Energy Ohio Retained Earnings
Beginning Balance (Attributable to Parent) at Dec. 31, 2021		$ 1	$ 44,371	$ 3,265	$ 4,464	$ 762	$ 3,100	$ 602
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 2,550				302			302
Other	3		1	1
Ending Balance (Attributable to Parent) at Dec. 31, 2022		1	44,862	2,637	4,766	762	3,100	904
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,841				334			334
Other	(2)		(7)	1
Ending Balance (Attributable to Parent) at Dec. 31, 2023	49,112	1	44,920	2,235	5,100	762	3,100	1,238
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,524				341			341
Other	(2)			(2)	18		18
Ending Balance (Attributable to Parent) at Dec. 31, 2024	$ 50,127	$ 1	$ 45,494	$ 3,431	$ 5,459	$ 762	$ 3,118	$ 1,579

Condensed Consolidated State_22

Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Indiana - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Revenues		$ 30,357	$ 29,060	$ 28,768
Operating Expenses
Operation, maintenance and other		5,389	5,625	5,734
Depreciation and amortization		5,793	5,253	5,086
Property and other taxes		1,466	1,400	1,466
Impairment of assets and other charges		38	85	434
Total operating expenses		22,457	22,042	22,778
Operating Income		7,926	7,070	6,012
Other Income and Expenses, net		652	711	505
Interest Expense		3,384	3,014	2,439
Income From Continuing Operations Before Income Taxes		5,194	4,767	4,078
Net Income Attributable to Duke Energy Corporation		4,524	2,841	2,550
Income Tax Expense From Continuing Operations		590	438	300
Other comprehensive income (loss)	[1]	234	134	174
Comprehensive Income Attributable to Duke Energy Corporation		4,758	2,975	2,713
Duke Energy Indiana
Operating Revenues		3,040	3,399	3,922
Operating Expenses
Cost of sales		964	1,217	1,819
Operation, maintenance and other		671	713	729
Depreciation and amortization		676	666	645
Property and other taxes		50	59	75
Impairment of assets and other charges		0	0	388
Total operating expenses		2,361	2,655	3,656
Operating Income		679	744	266
Other Income and Expenses, net		62	76	36
Interest Expense		229	213	189
Income From Continuing Operations Before Income Taxes		512	607	113
Net Income Attributable to Duke Energy Corporation		441	497	137
Income Tax Expense From Continuing Operations		71	110	(24)
Other comprehensive income (loss)		(1)	0	0
Comprehensive Income Attributable to Duke Energy Corporation		$ 440	$ 497	$ 137
[1]Net of income tax expense of app roximately $70 million, $40 million and $52 million for the years ended December 31, 2024, 2023 and 2022, respectively.

Condensed Consolidated Balan_13

Condensed Consolidated Balance Sheets - Duke Energy Indiana - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 314	$ 253
Receivables of VIEs (net of allowance for doubtful accounts)	2,232	1,112
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Total current assets	12,950	12,769
Property, Plant and Equipment
Cost	180,806	171,353
Accumulated depreciation and amortization	(57,503)	(56,038)
Net property, plant and equipment	123,303	115,315
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Operating lease right-of-use assets, net	1,148	1,092
Other (including amounts related to VIEs)	3,509	3,964
Total other noncurrent assets	50,090	48,809
Total Assets	186,343	176,893
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	5,479	4,228
Taxes accrued	851	816
Interest accrued	855	745
Current maturities of long-term debt	4,349	2,800
Asset retirement obligations	650	596
Regulatory liabilities	1,425	1,369
Other	2,084	2,319
Total current liabilities	19,357	17,283
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Other Noncurrent Liabilities
Deferred income taxes	11,424	10,556
Total noncurrent asset retirement obligation	9,342	8,560
Total noncurrent regulatory liabilities	14,694	14,039
Operating lease liabilities	957	917
Accrued pension and other post-retirement benefit costs	434	485
Investment tax credits	894	864
Other noncurrent liabilities	1,556	1,393
Total other noncurrent liabilities	39,390	36,971
Commitments and Contingencies
Equity
Accumulated other comprehensive income (loss)	228	(6)
Total Liabilities and Equity	186,343	176,893
Duke Energy Indiana
Current Assets
Cash and cash equivalents	13	8
Receivables of VIEs (net of allowance for doubtful accounts)	423	156
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	586	582
Regulatory assets	113	102
Other	69	98
Total current assets	1,205	1,143
Property, Plant and Equipment
Cost	19,970	18,900
Accumulated depreciation and amortization	(6,848)	(6,501)
Net property, plant and equipment	13,122	12,399
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	1,040	894
Operating lease right-of-use assets, net	37	50
Other (including amounts related to VIEs)	323	325
Total other noncurrent assets	1,400	1,269
Total Assets	15,727	14,811
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	257	300
Taxes accrued	168	66
Interest accrued	59	54
Current maturities of long-term debt	4	4
Asset retirement obligations	164	120
Regulatory liabilities	183	209
Other	183	184
Total current liabilities	1,085	1,369
Long-Term Debt (includes amounts related to VIEs)	4,644	4,348
Other Noncurrent Liabilities
Deferred income taxes	1,494	1,436
Total noncurrent asset retirement obligation	1,104	689
Total noncurrent regulatory liabilities	1,404	1,459
Operating lease liabilities	33	46
Accrued pension and other post-retirement benefit costs	82	115
Investment tax credits	186	186
Other noncurrent liabilities	19	0
Total other noncurrent liabilities	4,322	3,931
Commitments and Contingencies
Equity
Member's equity	5,526	5,012
Accumulated other comprehensive income (loss)	0	1
Total member's equity	5,526	5,013
Total Liabilities and Equity	15,727	14,811
Duke Energy Indiana | Affiliated entity
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	1	197
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	57	176
Notes payable to affiliated companies	10	256
Long-Term Debt (includes amounts related to VIEs)	$ 150	$ 150

Condensed Consolidated Balan_14

Condensed Consolidated Balance Sheets - Duke Energy Indiana (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts - receivables	$ 124	$ 55
Duke Energy Indiana
Allowance for doubtful accounts - receivables	$ 15	$ 5

Condensed Consolidated State_23

Condensed Consolidated Statements of Cash Flows - Duke Energy Indiana - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 4,614	$ 2,874	$ 2,455
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	6,419	6,084	5,843
Equity component of AFUDC	(233)	(198)	(197)
Impairment of assets and other charges	38	85	434
Deferred income taxes	987	3	(200)
Contributions to qualified pension plans	(100)	(100)	(58)
Payments for asset retirement obligations	545	632	584
Provision for rate refunds	(27)	(63)	(130)
(Increase) decrease in
Receivables	(23)	443	(788)
Inventory	(212)	(706)	(476)
Other current assets	885	(267)	(1,498)
Increase (decrease) in
Accounts payable	1,329	(800)	805
Taxes accrued	32	126	10
Other current liabilities	(11)	(26)	(153)
Other assets	(1,170)	914	(1,577)
Other liabilities	451	584	410
Net cash provided by operating activities	12,328	9,878	5,927
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,280)	(12,604)	(11,367)
Purchases of debt and equity securities	(5,703)	(3,761)	(4,243)
Proceeds from sales and maturities of debt and equity securities	5,803	3,824	4,333
Other	(1,009)	(799)	(727)
Net cash used in investing activities	(13,123)	(12,475)	(11,973)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	8,956	10,028	11,874
Payments for the redemption of long-term debt	(3,357)	(4,737)	(4,396)
Other	(52)	(124)	(130)
Net cash provided by financing activities	859	2,351	6,129
Net increase (decrease) in cash, cash equivalents and restricted cash	64	(246)	83
Cash, cash equivalents and restricted cash at beginning of period	357	603	520
Cash, cash equivalents and restricted cash at end of period	421	357	603
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	3,284	2,883	2,361
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(400)	1	(6)
Significant non-cash transactions:
Accrued capital expenditures	1,909	1,908	1,766
Duke Energy Indiana
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	441	497	137
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	679	669	648
Equity component of AFUDC	(19)	(10)	(13)
Impairment of assets and other charges	0	0	388
Deferred income taxes	(11)	91	(64)
Contributions to qualified pension plans	(8)	(8)	(5)
Payments for asset retirement obligations	80	81	82
Provision for rate refunds	(18)	0	0
(Increase) decrease in
Receivables	27	(40)	(3)
Receivables from affiliated companies	5	(8)	20
Inventory	(4)	(93)	(70)
Other current assets	70	138	(3)
Increase (decrease) in
Accounts payable	(44)	(83)	105
Accounts payable to affiliated companies	(78)	42	(3)
Taxes accrued	102	(26)	34
Other current liabilities	(31)	128	9
Other assets	(33)	(69)	(10)
Other liabilities	25	7	13
Net cash provided by operating activities	1,023	1,154	1,101
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(935)	(961)	(877)
Purchases of debt and equity securities	(133)	(68)	(61)
Proceeds from sales and maturities of debt and equity securities	132	55	48
Notes receivable from affiliated companies	(117)	109	(86)
Other	(46)	(66)	(55)
Net cash used in investing activities	(1,099)	(931)	(1,031)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	298	495	67
Payments for the redemption of long-term debt	(4)	(303)	(84)
Notes payable to affiliated companies	(246)	(178)	435
Capital contribution from parent	235	0	0
Distributions to parent	(201)	(259)	(462)
Other	(1)	(1)	(1)
Net cash provided by financing activities	81	(246)	(45)
Net increase (decrease) in cash, cash equivalents and restricted cash	5	(23)	25
Cash, cash equivalents and restricted cash at beginning of period	8	31	6
Cash, cash equivalents and restricted cash at end of period	13	8	31
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	219	202	186
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(80)	90	35
Significant non-cash transactions:
Accrued capital expenditures	$ 115	$ 114	$ 122

Condensed Consolidated State_24

Condensed Consolidated Statements of Changes in Equity - Duke Energy Indiana - USD ($) $ in Millions	Total	Duke Energy Indiana	Duke Energy Indiana Member's Equity	Duke Energy Indiana Pension and OPEB Adjustments
Beginning balance at Dec. 31, 2021		$ 5,015	$ 5,015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 2,550	137	137
Distributions to parent	(3,073)	(450)	(450)
Other	3	1		$ 1
Ending balance at Dec. 31, 2022		4,703	4,702	1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,841	497	497
Distributions to parent	(3,138)	(187)	(187)
Other	(2)
Ending balance at Dec. 31, 2023		5,013	5,012	1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,524	441	441
Distributions to parent	(3,204)	(160)	(160)
Other	$ (2)	(3)	(2)	(1)
Contribution from parent		235	235
Ending balance at Dec. 31, 2024		$ 5,526	$ 5,526	$ 0

Condensed Consolidated State_25

Condensed Consolidated Statements of Operations and Comprehensive Income - Piedmont - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Regulated natural gas	$ 2,252	$ 2,152	$ 2,724
Nonregulated electric and other	318	291	285
Total operating revenues	30,357	29,060	28,768
Operating Expenses
Operation, maintenance and other	5,389	5,625	5,734
Depreciation and amortization	5,793	5,253	5,086
Property and other taxes	1,466	1,400	1,466
Impairment of assets and other charges	38	85	434
Total operating expenses	22,457	22,042	22,778
Gains on Sales of Other Assets and Other, net	26	52	22
Operating Income	7,926	7,070	6,012
Equity in (losses) earnings of unconsolidated affiliates	(9)	113	113
Other income and expenses, net	661	598	392
Total other income and expenses	652	711	505
Interest Expense	3,384	3,014	2,439
Income From Continuing Operations Before Income Taxes	5,194	4,767	4,078
Income Tax Expense From Continuing Operations	590	438	300
Net Income Attributable to Duke Energy Corporation	4,524	2,841	2,550
Comprehensive Income Attributable to Duke Energy Corporation	4,758	2,975	2,713
Piedmont
Regulated natural gas	1,702	1,603	2,100
Nonregulated electric and other	27	25	24
Total operating revenues	1,729	1,628	2,124
Operating Expenses
Cost of natural gas	423	430	1,015
Operation, maintenance and other	359	344	368
Depreciation and amortization	261	237	222
Property and other taxes	55	59	57
Impairment of assets and other charges	0	(4)	18
Total operating expenses	1,098	1,066	1,680
Gains on Sales of Other Assets and Other, net	0	0	4
Operating Income	631	562	448
Equity in (losses) earnings of unconsolidated affiliates	8	9	8
Other income and expenses, net	54	57	46
Total other income and expenses	62	66	54
Interest Expense	185	165	140
Income From Continuing Operations Before Income Taxes	508	463	362
Income Tax Expense From Continuing Operations	95	84	39
Net Income Attributable to Duke Energy Corporation	413	379	323
Comprehensive Income Attributable to Duke Energy Corporation	$ 413	$ 379	$ 323

Condensed Consolidated Balan_15

Condensed Consolidated Balance Sheets - Piedmont - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 314	$ 253
Receivables of VIEs (net of allowance for doubtful accounts)	2,232	1,112
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Regulatory assets	2,756	3,648
Other (includes amounts related to VIEs)	695	431
Total current assets	12,950	12,769
Property, Plant and Equipment
Cost	180,806	171,353
Accumulated depreciation and amortization	(57,503)	(56,038)
Net property, plant and equipment	123,303	115,315
Other Noncurrent Assets
Goodwill	19,303	19,303
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Operating lease right-of-use assets, net	1,148	1,092
Investments in equity method unconsolidated affiliates	353	492
Other (including amounts related to VIEs)	3,509	3,964
Total other noncurrent assets	50,090	48,809
Total Assets	186,343	176,893
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	5,479	4,228
Taxes accrued	851	816
Interest accrued	855	745
Current maturities of long-term debt	4,349	2,800
Regulatory liabilities	1,425	1,369
Other	2,084	2,319
Total current liabilities	19,357	17,283
Long-Term Debt (includes amounts related to VIEs)	76,340	72,452
Other Noncurrent Liabilities
Deferred income taxes	11,424	10,556
Total noncurrent asset retirement obligation	9,342	8,560
Total noncurrent regulatory liabilities	14,694	14,039
Operating lease liabilities	957	917
Accrued pension and other post-retirement benefit costs	434	485
Other noncurrent liabilities	1,556	1,393
Total other noncurrent liabilities	39,390	36,971
Commitments and Contingencies
Equity
Common stock	1	1
Retained earnings	3,431	2,235
Total Duke Energy Corporation stockholders' equity	50,127	49,112
Noncontrolling interests	1,129	1,075
Total equity	51,256	50,187
Total Liabilities and Equity	186,343	176,893
Piedmont
Current Assets
Cash and cash equivalents	2	0
Receivables of VIEs (net of allowance for doubtful accounts)	368	311
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	78	112
Regulatory assets	158	161
Other (includes amounts related to VIEs)	11	7
Total current assets	633	601
Property, Plant and Equipment
Cost	12,780	11,908
Accumulated depreciation and amortization	(2,432)	(2,259)
Net property, plant and equipment	10,348	9,649
Other Noncurrent Assets
Goodwill	49	49
Other Noncurrent Assets: Regulatory assets	421	410
Operating lease right-of-use assets, net	4	4
Investments in equity method unconsolidated affiliates	76	78
Other (including amounts related to VIEs)	268	276
Total other noncurrent assets	818	817
Total Assets	11,799	11,067
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	237	315
Taxes accrued	84	89
Interest accrued	45	39
Current maturities of long-term debt	205	40
Regulatory liabilities	68	98
Other	76	77
Total current liabilities	1,480	1,250
Long-Term Debt (includes amounts related to VIEs)	3,798	3,628
Other Noncurrent Liabilities
Deferred income taxes	1,018	933
Total noncurrent asset retirement obligation	29	26
Total noncurrent regulatory liabilities	956	988
Operating lease liabilities	7	10
Accrued pension and other post-retirement benefit costs	7	8
Other noncurrent liabilities	150	172
Total other noncurrent liabilities	2,167	2,137
Commitments and Contingencies
Equity
Common stock	1,635	1,635
Retained earnings	2,718	2,416
Total Duke Energy Corporation stockholders' equity	4,353	4,051
Noncontrolling interests	1	1
Total equity	4,354	4,052
Total Liabilities and Equity	11,799	11,067
Piedmont | Affiliated entity
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	16	10
Current Liabilities
Accounts payable (includes $214 at 2024 and $188 at 2023 related to VIEs)	26	54
Notes payable to affiliated companies	$ 739	$ 538

Condensed Consolidated Balan_16

Condensed Consolidated Balance Sheets - Piedmont (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts - receivables	$ 124	$ 55
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares outstanding (in shares)	776,000,000	771,000,000
Piedmont
Allowance for doubtful accounts - receivables	$ 10	$ 11
Common stock, par value (in usd per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	100	100
Common stock, shares outstanding (in shares)	100	100

Condensed Consolidated State_26

Condensed Consolidated Statements of Cash Flows - Duke Energy Piedmont - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 4,614	$ 2,874	$ 2,455
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	6,419	6,084	5,843
Equity component of AFUDC	(233)	(198)	(197)
Gains on sales of other assets	(26)	(52)	(22)
Impairment of assets and other charges	38	85	434
Deferred income taxes	987	3	(200)
Contributions to qualified pension plans	(100)	(100)	(58)
Provision for rate refunds	(27)	(63)	(130)
(Increase) decrease in
Receivables	(23)	443	(788)
Inventory	(212)	(706)	(476)
Other current assets	885	(267)	(1,498)
Increase (decrease) in
Accounts payable	1,329	(800)	805
Taxes accrued	32	126	10
Other current liabilities	(11)	(26)	(153)
Other assets	(1,170)	914	(1,577)
Other liabilities	451	584	410
Net cash provided by operating activities	12,328	9,878	5,927
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,280)	(12,604)	(11,367)
Contributions to equity method investments	(8)	(34)	(58)
Other	(1,009)	(799)	(727)
Net cash used in investing activities	(13,123)	(12,475)	(11,973)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	8,956	10,028	11,874
Payments for the redemption of long-term debt	(3,357)	(4,737)	(4,396)
Other	(52)	(124)	(130)
Net cash provided by financing activities	859	2,351	6,129
Net increase (decrease) in cash, cash equivalents and restricted cash	64	(246)	83
Cash, cash equivalents and restricted cash at beginning of period	357	603	520
Cash, cash equivalents and restricted cash at end of period	421	357	603
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	3,284	2,883	2,361
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	(400)	1	(6)
Significant non-cash transactions:
Accrued capital expenditures	1,909	1,908	1,766
Piedmont
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	413	379	323
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	264	239	225
Equity component of AFUDC	(21)	(21)	(11)
Impairment of assets and other charges	0	(4)	18
Deferred income taxes	60	38	5
Equity in earnings of unconsolidated affiliates	(8)	(9)	(8)
Contributions to qualified pension plans	(3)	(3)	(2)
Provision for rate refunds	0	0	(3)
(Increase) decrease in
Receivables	(61)	127	(111)
Receivables from affiliated companies	(6)	1	0
Inventory	34	58	(63)
Other current assets	(9)	(46)	32
Increase (decrease) in
Accounts payable	40	(45)	40
Accounts payable to affiliated companies	(28)	3	11
Taxes accrued	(5)	15	11
Other current liabilities	(13)	27	36
Other assets	(16)	(7)	5
Other liabilities	17	10	(1)
Net cash provided by operating activities	658	762	507
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(1,025)	(1,036)	(862)
Contributions to equity method investments	0	0	(8)
Other	(54)	(54)	(26)
Net cash used in investing activities	(1,079)	(1,090)	(896)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	373	348	394
Payments for the redemption of long-term debt	(40)	(45)	0
Notes payable to affiliated companies	200	25	(4)
Distributions to parent	(110)	0	0
Other	0	0	(1)
Net cash provided by financing activities	423	328	389
Net increase (decrease) in cash, cash equivalents and restricted cash	2	0	0
Cash, cash equivalents and restricted cash at beginning of period	0	0	0
Cash, cash equivalents and restricted cash at end of period	2	0	0
Supplemental Disclosures:
Cash paid for interest, net of amount capitalized	176	162	135
Cash paid for (received from) income taxes, net (includes transferable tax credit sale proceeds of $558, $28 and $0, respectively)	48	28	23
Significant non-cash transactions:
Accrued capital expenditures	$ 105	$ 223	$ 207

Condensed Consolidated State_27

Condensed Consolidated Statements of Changes in Equity - Piedmont - USD ($) $ in Millions	Total	Common Stock	Retained Earnings	Total Equity	Noncontrolling Interests	Piedmont	Piedmont Common Stock	Piedmont Retained Earnings	Piedmont Total Equity	Piedmont Noncontrolling Interests
Beginning Balance (Attributable to Parent) at Dec. 31, 2021		$ 1	$ 3,265	$ 49,296			$ 1,635	$ 1,714	$ 3,349
Beginning Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2021					$ 1,840					$ 0
Beginning Balance (Parent) at Dec. 31, 2021	$ 51,136					$ 3,349
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,455					323		323	323
Distributions to parent	(3,073)		(3,073)	(3,073)
Other	3		1	2	1	1				1
Ending Balance (Attributable to Parent) at Dec. 31, 2022		1	2,637	49,322			1,635	2,037	3,672
Ending Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2022					2,531					1
Ending Balance (Parent) at Dec. 31, 2022	51,853					3,673
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,874					379		379	379
Distributions to parent	(3,138)		(3,138)	(3,138)
Other	(2)		1	(6)	4
Ending Balance (Attributable to Parent) at Dec. 31, 2023	49,112	1	2,235	49,112		4,051	1,635	2,416	4,051
Ending Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2023	1,075				1,075	1				1
Ending Balance (Parent) at Dec. 31, 2023	50,187					4,052
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,614					413		413	413
Distributions to parent	(3,204)		(3,204)	(3,204)		(110)		(110)	(110)
Other	(2)		(2)	(2)	0	(1)		(1)	(1)
Ending Balance (Attributable to Parent) at Dec. 31, 2024	50,127	$ 1	$ 3,431	$ 50,127		4,353	$ 1,635	$ 2,718	$ 4,353
Ending Balance (Attributable to Noncontrolling Interest) at Dec. 31, 2024	1,129				$ 1,129	1				$ 1
Ending Balance (Parent) at Dec. 31, 2024	$ 51,256					$ 4,354

Condensed Consolidated State_28

Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Cash Flows [Abstract]
Net proceeds related to the sale of certain tax credits	$ 558	$ 28	$ 0

Condensed Consolidated State_29

Condensed Consolidated Statements of Cash Flows - Duke Energy Carolinas (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net proceeds related to the sale of certain tax credits	$ 558	$ 28	$ 0
Duke Energy Carolinas
Net proceeds related to the sale of certain tax credits	$ 440	$ 0	$ 0

Condensed Consolidated State_30

Condensed Consolidated Statements of Cash Flows - Progress Energy (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net proceeds related to the sale of certain tax credits	$ 558	$ 28	$ 0
Progress Energy
Net proceeds related to the sale of certain tax credits	$ 118	$ 28	$ 0

Condensed Consolidated State_31

Condensed Consolidated Statements of Cash Flows - Duke Energy Progress (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net proceeds related to the sale of certain tax credits	$ 558	$ 28	$ 0
Duke Energy Progress
Net proceeds related to the sale of certain tax credits	$ 71	$ 0	$ 0

Condensed Consolidated State_32

Condensed Consolidated Statements of Cash Flows - Duke Energy Florida (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net proceeds related to the sale of certain tax credits	$ 558	$ 28	$ 0
Duke Energy Florida
Net proceeds related to the sale of certain tax credits	$ 47	$ 28	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations and Basis of Consolidation Duke Energy is an energy company headquartered in Charlotte, North Carolina, subject to regulation by the FERC and other regulatory agencies listed below. Duke Energy operates in the U.S. primarily through its direct and indirect subsidiaries. Certain Duke Energy subsidiaries are also subsidiary registrants, including Duke Energy Carolinas; Progress Energy; Duke Energy Progress; Duke Energy Florida; Duke Energy Ohio; Duke Energy Indiana and Piedmont. When discussing Duke Energy’s consolidated financial information, it necessarily includes the results of its separate Subsidiary Registrants, which along with Duke Energy, are collectively referred to as the Duke Energy Registrants. The information in these combined notes relates to each of the Duke Energy Registrants as noted in the Index to Combined Notes to Consolidated Financial Statements. However, none of the Subsidiary Registrants make any representation as to information related solely to Duke Energy or the Subsidiary Registrants of Duke Energy other than itself. These Consolidated Financial Statements include, after eliminating intercompany transactions and balances, the accounts of the Duke Energy Registrants and subsidiaries or VIEs where the respective Duke Energy Registrants have control. See Note 18 for additional information on VIEs. These Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities. See Note 9 for additional information on joint ownership. Substantially all of the Subsidiary Registrants' operations qualify for regulatory accounting. Duke Energy Carolinas is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Carolinas is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC. Progress Energy is a public utility holding company, which conducts operations through its wholly owned subsidiaries, Duke Energy Progress and Duke Energy Florida. Progress Energy is subject to regulation by FERC and other regulatory agencies listed below. Duke Energy Progress is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Progress is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC. Duke Energy Florida is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Florida. Duke Energy Florida is subject to the regulatory provisions of the FPSC, NRC and FERC. Duke Energy Ohio is a regulated public utility primarily engaged in the transmission and distribution of electricity in portions of Ohio and Kentucky, the generation and sale of electricity in portions of Kentucky and the transportation and sale of natural gas in portions of Ohio and Kentucky. Duke Energy Ohio conducts competitive auctions for retail electricity supply in Ohio whereby the energy price is recovered from retail customers and recorded in Operating Revenues on the Consolidated Statements of Operations and Comprehensive Income. Operations in Kentucky are conducted through its wholly owned subsidiary, Duke Energy Kentucky. References herein to Duke Energy Ohio collectively include Duke Energy Ohio and its subsidiaries, unless otherwise noted. Duke Energy Ohio is subject to the regulatory provisions of the PUCO, KPSC and FERC. Duke Energy Indiana is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Indiana. Duke Energy Indiana is subject to the regulatory provisions of the IURC and FERC. Piedmont is a regulated public utility primarily engaged in the distribution of natural gas in portions of North Carolina, South Carolina and Tennessee. Piedmont is subject to the regulatory provisions of the NCUC, PSCSC, TPUC and FERC. Certain prior year amounts have been reclassified to conform to the current year presentation. Other Current Assets and Liabilities The following table provides a description of amounts included in Other within Current Assets or Current Liabilities that exceed 5% of total Current Assets or Current Liabilities on the Duke Energy Registrants' Consolidated Balance Sheets at either December 31, 2024, or 2023. December 31, (in millions) Location 2024 2023 Duke Energy Carolinas Accrued compensation Current Liabilities $ 234 $ 224 Duke Energy Florida Tax receivables Current Assets $ 166 $ 12 Customer deposits/Collateral liabilities Current Liabilities $ 164 $ 168 Duke Energy Ohio Tax receivables Current Assets $ 4 95 Duke Energy Indiana Customer advances Current Liabilities $ 100 $ 87 Discontinued Operations Duke Energy has elected to present cash flows of discontinued operations combined with cash flows of continuing operations. Unless otherwise noted, the notes to these consolidated financial statements exclude amounts related to discontinued operations for all periods presented. For the years ended December 31, 2024, 2023 and 2022, the Income (Loss) From Discontinued Operations, net of tax on Duke Energy's Consolidated Statements of Operations includes amounts related to NCI. A portion of NCI on Duke Energy's Consolidated Balance Sheets relates to discontinued operations for the periods presented. See Note 2 for discussion of discontinued operations related to the Commercial Renewables Disposal Groups. Significant Accounting Policies Use of Estimates In preparing financial statements that conform to GAAP, the Duke Energy Registrants must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. Regulatory Accounting The majority of the Duke Energy Registrants’ operations are subject to price regulation for the sale of electricity and natural gas by state utility commissions or FERC. When prices are set on the basis of specific costs of the regulated operations and an effective franchise is in place such that sufficient natural gas or electric services can be sold to recover those costs, the Duke Energy Registrants apply regulatory accounting. Regulatory accounting changes the timing of the recognition of costs or revenues relative to a company that does not apply regulatory accounting. As a result, regulatory assets and regulatory liabilities are recognized on the Consolidated Balance Sheets. Regulatory assets and liabilities are amortized consistent with the treatment of the related cost in the ratemaking process. Regulatory assets are reviewed for recoverability each reporting period. If a regulatory asset is no longer deemed probable of recovery, the deferred cost is charged to earnings. See Note 4 for further information. Regulatory accounting rules also require recognition of a disallowance (also called "impairment") loss if it becomes probable that part of the cost of a plant under construction (or a recently completed plant or an abandoned plant) will be disallowed for ratemaking purposes and a reasonable estimate of the amount of the disallowance can be made. For example, if a cost cap is set for a plant still under construction, the amount of the disallowance is a result of a judgment as to the ultimate cost of the plant. These disallowances can require judgments on allowed future rate recovery. When it becomes probable that regulated generation, transmission or distribution assets will be abandoned, the cost of the asset is removed from plant in service. The value that may be retained as a regulatory asset on the balance sheet for the abandoned property is dependent upon amounts that may be recovered through regulated rates, including any return. As such, an impairment charge could be partially or fully offset by the establishment of a regulatory asset if rate recovery is probable. The impairment charge for a disallowance of costs for regulated plants under construction, recently completed or abandoned is based on discounted cash flows. The Duke Energy Registrants utilize cost-tracking mechanisms, commonly referred to as fuel adjustment clauses or PGA clauses. These clauses allow for the recovery of fuel and fuel-related costs, portions of purchased power, natural gas costs and hedging costs through surcharges on customer rates. The difference between the costs incurred and the surcharge revenues is recorded either as an adjustment to Operating Revenues, Operating Expenses – Fuel used in electric generation or Operating Expenses – Cost of natural gas on the Consolidated Statements of Operations, with an off-setting impact on regulatory assets or liabilities. Cash, Cash Equivalents and Restricted Cash All highly liquid investments with maturities of three months or less at the date of acquisition are considered cash equivalents. Duke Energy, Progress Energy and Duke Energy Florida have restricted cash balances related primarily to collateral assets, escrow deposits and VIEs. Duke Energy Carolinas and Duke Energy Progress have restricted cash balances related to VIEs from storm recovery bonds issued. See Note 18 for additional information. Restricted cash amounts are included in Other within Current Assets and Other Noncurrent Assets on the Consolidated Balance Sheets. The following table presents the components of cash, cash equivalents and restricted cash included in the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 Duke Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Duke Energy Progress Energy Energy (in millions) Energy Carolinas Energy Progress Florida Energy Carolinas Energy Progress Florida Current Assets Cash and cash equivalents $ 314 $ 6 $ 73 $ 24 $ 33 $ 253 $ 9 $ 59 $ 18 $ 24 Other 84 9 76 40 35 76 9 67 31 36 Other Noncurrent Assets Other 20 1 11 5 7 16 1 9 2 7 Total cash, cash equivalents and restricted cash $ 418 $ 16 $ 160 $ 69 $ 75 $ 345 $ 19 $ 135 $ 51 $ 67 Inventory Inventory related to regulated operations is valued at historical cost. Inventory is charged to expense or capitalized to property, plant and equipment when issued, primarily using the average cost method. Excess or obsolete inventory is written down to the lower of cost or net realizable value. Once inventory has been written down, it creates a new cost basis for the inventory that is not subsequently written up. Provisions for inventory write-offs were not material at December 31, 2024, and 2023, respectively. The components of inventory are presented in the tables below. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Materials and supplies $ 3,387 $ 1,150 $ 1,649 $ 1,074 $ 576 $ 149 $ 389 $ 11 Coal 801 341 241 164 77 23 196 — Natural gas, oil and other 321 45 196 103 92 11 1 67 Total inventory $ 4,509 $ 1,536 $ 2,086 $ 1,341 $ 745 $ 183 $ 586 $ 78 December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Materials and supplies $ 3,086 $ 1,075 $ 1,465 $ 963 $ 502 $ 139 $ 361 $ 12 Coal 842 364 231 154 77 28 219 — Natural gas, oil and other 364 45 205 110 95 12 2 100 Total inventory $ 4,292 $ 1,484 $ 1,901 $ 1,227 $ 674 $ 179 $ 582 $ 112 Investments in Debt and Equity Securities The Duke Energy Registrants classify investments in equity securities as FV-NI and investments in debt securities as AFS. Both categories are recorded at fair value on the Consolidated Balance Sheets. Realized and unrealized gains and losses on securities classified as FV-NI are reported through net income. Unrealized gains and losses for debt securities classified as AFS are included in AOCI until realized, unless it is determined the carrying value of an investment has a credit loss. For certain investments of regulated operations, such as substantially all of the NDTF, realized and unrealized gains and losses (including any credit losses) on debt securities are recorded as a regulatory asset or liability. The credit loss portion of debt securities of nonregulated operations are included in earnings. Investments in debt and equity securities are classified as either current or noncurrent based on management’s intent and ability to sell these securities, taking into consideration current market liquidity. See Note 16 for further information. Goodwill Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont perform annual goodwill impairment tests as of August 31 each year at the reporting unit level, which is determined to be a business segment or one level below. Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont update these tests between annual tests if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. See Note 12 for further information. Intangible Assets Intangible assets are included in Other in Other Noncurrent Assets on the Consolidated Balance Sheets. Generally, intangible assets are amortized using an amortization method that reflects the pattern in which the economic benefits of the intangible asset are consumed or on a straight-line basis if that pattern is not readily determinable. Amortization of intangibles is reflected in Depreciation and amortization on the Consolidated Statements of Operations. Intangible assets are subject to impairment testing and if impaired, the carrying value is accordingly reduced. RECs are used to measure compliance with renewable energy standards and are held primarily for consumption. See Note 12 for further information. Long-Lived Asset Impairments The Duke Energy Registrants evaluate long-lived assets that are held and used, excluding goodwill, for impairment when circumstances indicate the carrying value of those assets may not be recoverable. An impairment exists when a long-lived asset’s carrying value exceeds the estimated undiscounted cash flows expected to result from the use and eventual disposition of the asset. The estimated cash flows may be based on alternative expected outcomes that are probability weighted. If the carrying value of the long-lived asset is not recoverable based on these estimated future undiscounted cash flows, the carrying value of the asset is written down to its then current estimated fair value and an impairment charge is recognized. The Duke Energy Registrants assess fair value of long-lived assets that are held and used using various methods, including recent comparable third-party sales, internally developed discounted cash flow analysis and analysis from outside advisors. Triggering events to reassess cash flows may include, but are not limited to, significant changes in commodity prices, the condition of an asset or management’s interest in selling the asset. Property, Plant and Equipment Property, plant and equipment are stated at the lower of depreciated historical cost net of any disallowances or fair value, if impaired. The Duke Energy Registrants capitalize all construction-related direct labor and material costs, as well as indirect construction costs such as general engineering, taxes and financing costs. See “Allowance for Funds Used During Construction and Interest Capitalized” section below for information on capitalized financing costs. Costs of renewals and betterments that extend the useful life of property, plant and equipment are also capitalized. The cost of repairs, replacements and major maintenance projects, which do not extend the useful life or increase the expected output of the asset, are expensed as incurred. Depreciation is generally computed over the estimated useful life of the asset using the composite straight-line method. Depreciation studies are conducted periodically to update composite rates and are approved by state utility commissions and/or the FERC when required. The composite weighted average depreciation rates, excluding nuclear fuel, are included in the table that follows. Years Ended December 31, 2024 2023 2022 Duke Energy 3.0 % 2.9 % 3.0 % Duke Energy Carolinas 3.1 % 2.7 % 2.7 % Progress Energy 3.3 % 3.3 % 3.2 % Duke Energy Progress 3.2 % 3.1 % 3.0 % Duke Energy Florida 3.5 % 3.5 % 3.5 % Duke Energy Ohio 2.9 % 2.8 % 2.9 % Duke Energy Indiana 3.6 % 3.6 % 3.6 % Piedmont 2.2 % 2.1 % 2.1 % In general, when the Duke Energy Registrants retire regulated property, plant and equipment, the original cost plus the cost of retirement, less salvage value and any depreciation already recognized, is charged to accumulated depreciation. However, when it becomes probable the asset will be retired substantially in advance of its original expected useful life or is abandoned, the cost of the asset and the corresponding accumulated depreciation is recognized as a separate asset. If the asset is still in operation, the net amount is classified as Facilities to be retired, net on the Consolidated Balance Sheets. If the asset is no longer operating, the net amount is classified in Regulatory assets on the Consolidated Balance Sheets if deemed recoverable (see discussion of long-lived asset impairments above). The carrying value of the asset is based on historical cost if the Duke Energy Registrants are allowed to recover the remaining net book value and a return equal to at least the incremental borrowing rate. If not, an impairment is recognized to the extent the net book value of the asset exceeds the present value of future revenues discounted at the incremental borrowing rate. When the Duke Energy Registrants sell entire regulated operating units, the original cost and accumulated depreciation and amortization balances are removed from Property, Plant and Equipment on the Consolidated Balance Sheets. Any gain or loss is recorded in earnings, unless otherwise required by the applicable regulatory body. See Note 11 for additional information. Other Noncurrent Assets Duke Energy, through a nonregulated subsidiary, was the winner of the Carolina Long Bay offshore wind auction in May 2022 and recorded an asset of $150 million related to the contract in Other within Other noncurrent assets on the Consolidated Balance Sheets as of December 31, 2024 and 2023. The asset is recorded at historical cost and is subject to impairment testing should circumstances indicate the carrying value may not be recoverable. In November 2022, Duke Energy committed to a plan to sell the Commercial Renewables business segment, excluding the offshore wind contract for Carolina Long Bay, which was moved to the EU&I segment. See Notes 2 and 3 for further information. Leases Duke Energy determines if an arrangement is a lease at contract inception based on whether the arrangement involves the use of a physically distinct identified asset and whether Duke Energy has the right to obtain substantially all of the economic benefits from the use of the asset throughout the period as well as the right to direct the use of the asset. As a policy election, Duke Energy does not evaluate arrangements with initial contract terms of less than one year as leases. Operating leases are included in Operating lease ROU assets, net, Other current liabilities and Operating lease liabilities on the Consolidated Balance Sheets. Finance leases are included in Property, Plant and Equipment, Current maturities of long-term debt and Long-Term Debt on the Consolidated Balance Sheets. For lessee and lessor arrangements, Duke Energy has elected a policy to not separate lease and non-lease components for all asset classes. For lessor arrangements, lease and non-lease components are only combined under one arrangement and accounted for under the lease accounting framework if the non-lease components are not the predominant component of the arrangement and the lease component would be classified as an operating lease. Nuclear Fuel Nuclear fuel is classified as Property, Plant and Equipment on the Consolidated Balance Sheets. Nuclear fuel in the front-end fuel processing phase is considered work in progress and not amortized until placed in service. Amortization of nuclear fuel is included within Fuel used in electric generation and purchased power on the Consolidated Statements of Operations. Amortization is recorded using the units-of-production method. Allowance for Funds Used During Construction and Interest Capitalized For regulated operations, the debt and equity costs of financing the construction of property, plant and equipment are reflected as AFUDC and capitalized as a component of the cost of property, plant and equipment. AFUDC equity is reported on the Consolidated Statements of Operations as non-cash income in Other income and expenses, net. AFUDC debt is reported as a non-cash offset to Interest Expense. After construction is completed, the Duke Energy Registrants are permitted to recover these costs through their inclusion in rate base and the corresponding subsequent depreciation or amortization of those regulated assets. AFUDC equity, a permanent difference for income taxes, reduces the ETR when capitalized and increases the ETR when depreciated or amortized. See Note 24 for additional information. Asset Retirement Obligations AROs are recognized for legal obligations associated with the retirement of property, plant and equipment. When recording an ARO, the present value of the projected liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made. The liability is accreted over time. For operating plants, the present value of the liability is added to the cost of the associated asset and depreciated over the remaining life of the asset. For retired plants, the present value of the liability is recorded as a regulatory asset unless determined not to be probable of recovery. The present value of the initial obligation and subsequent updates are based on discounted cash flows, which include estimates regarding timing of future cash flows, selection of discount rates and cost escalation rates, among other factors. These estimates are subject to change. Depreciation expense is adjusted prospectively for any changes to the carrying amount of the associated asset. The Duke Energy Registrants receive amounts to fund the cost of the ARO for regulated operations through a combination of regulated revenues and earnings on the NDTF. As a result, amounts recovered in regulated revenues, earnings on the NDTF, accretion expense and depreciation of the associated asset are netted and deferred as a regulatory asset or liability. Accounts Payable Duke Energy has a voluntary supply chain finance program (the “program”) that allows Duke Energy suppliers, at their sole discretion, to sell their receivables from Duke Energy to a global financial institution at a rate that leverages Duke Energy’s credit rating and, which may result in favorable terms compared to the rate available to the supplier on their own credit rating. Suppliers participating in the program, determine at their sole discretion which invoices they will sell to the financial institution. Suppliers’ decisions on which invoices are sold do not impact Duke Energy’s payment terms, which are based on commercial terms negotiated between Duke Energy and the supplier regardless of program participation. The commercial terms negotiated between Duke Energy and its suppliers are consistent regardless of whether the supplier elects to participate in the program. Duke Energy does not issue any guarantees with respect to the program and does not participate in negotiations between suppliers and the financial institution. Duke Energy does not have an economic interest in the supplier’s decision to participate in the program and receives no interest, fees or other benefit from the financial institution based on supplier participation in the program. The following table presents the amounts included within Accounts payable on the Consolidated Balance Sheets sold to the financial institution by our suppliers and the supplier invoices sold to the financial institution under the program included within Net cash provided by operating activities on the Consolidated Statements of Cash Flows as of December 31, 2024, and December 31, 2023. For the Years Ended December 31, 2023 and 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Confirmed obligations outstanding at December 31, 2022 $ 87 $ 6 $ 19 $ 8 $ 11 $ 5 $ — $ 57 Invoices confirmed during the period 228 24 58 22 36 7 — 139 Confirmed invoices paid during the period (265) (30) (74) (30) (44) (12) — (149) Confirmed obligations outstanding at December 31, 2023 $ 50 $ — $ 3 $ — $ 3 $ — $ — $ 47 Invoices confirmed during the period 156 — 4 — 4 — — 152 Confirmed invoices paid during the period (193) — (6) — (6) — — (187) Confirmed obligations outstanding at December 31, 2024 $ 13 $ — $ 1 $ — $ 1 $ — $ — $ 12 Revenue Recognition Duke Energy recognizes revenue as customers obtain control of promised goods and services in an amount that reflects consideration expected in exchange for those goods or services. Generally, the delivery of electricity and natural gas results in the transfer of control to customers at the time the commodity is delivered and the amount of revenue recognized is equal to the amount billed to each customer, including estimated volumes delivered when billings have not yet occurred. See Note 19 for further information. Alternative Revenue Programs Duke Energy accounts for certain types of programs established by the regulators in the states in which it operates, including decoupling mechanisms, as alternative revenue programs. Alternative revenue programs are contracts between an entity and its regulator, not a contract between an entity and a customer. Revenue arising from alternative revenue programs is presented as Regulated electric revenues and Regulated natural gas revenues on the Consolidated Statements of Operations. Revenue from alternative revenue programs is recognized in the period they are earned (i.e., during the period of revenue shortfall or excess due to fluctuations in customer usage or when specific targets are met resulting in the achievement of performance incentives or penalties) and a regulatory asset or liability on the Consolidated Balance Sheets is established, which is subsequently billed or refunded to customers. Duke Energy recognizes revenue as alternative revenue programs for programs that have been authorized for rate recovery, are objectively determinable and probable of recovery, and are expected to be collected within 24 months. See Note 19 for disaggregated revenue information including revenue from contracts with customers and revenues recognized as alternative revenue programs. Derivatives and Hedging Derivative and non-derivative instruments may be used in connection with commodity price and interest rate activities, including swaps, futures, forwards and options. All derivative instruments, except those that qualify for the NPNS exception, are recorded on the Consolidated Balance Sheets at fair value. Qualifying derivative instruments may be designated as either cash flow hedges or fair value hedges. Other derivative instruments (undesignated contracts) either have not been designated or do not qualify as hedges. The effective portion of the change in the fair value of cash flow hedges is recorded in AOCI. The effective portion of the change in the fair value of a fair value hedge is offset in net income by changes in the hedged item. For activity subject to regulatory accounting, gains and losses on derivative contracts are reflected as regulatory assets or liabilities and not as other comprehensive income or current period income. As a result, changes in fair value of these derivatives have no immediate earnings impact. Formal documentation, including transaction type and risk management strategy, is maintained for all contracts accounted for as a hedge. At inception and at least every three months thereafter, the hedge contract is assessed to see if it is highly effective in offsetting changes in cash flows or fair values of hedged items. See Note 15 for further information. Captive Insurance Reserves Duke Energy has captive insurance subsidiaries that provide coverage, on an indemnity basis, to the Subsidiary Registrants as well as certain third parties, on a limited basis, for financial losses, primarily related to property, workers’ compensation and general liability. Liabilities include provisions for estimated losses incurred but not reported (IBNR), as well as estimated provisions for known claims. IBNR reserve estimates are primarily based upon historical loss experience, industry data and other actuarial assumptions. Reserve estimates are adjusted in future periods as actual losses differ from experience. Duke Energy, through its captive insurance entities, also has reinsurance coverage with third parties for certain losses above a per occurrence and/or aggregate retention. Receivables for reinsurance coverage are recognized when realization is deemed probable. Preferred Stock Preferred stock is reviewed to determine the appropriate balance sheet classification and embedded features, such as call options, are evaluated to determine if they should be bifurcated and accounted for separately. Costs directly related to the issuance of preferred stock are recorded as a reduction of the proceeds received. The liability for the dividend is recognized when declared. The accumulated dividends on the cumulative preferred stock is recognized to net income available to Duke Energy Corporation in the EPS calculation. See Note 20 for further information. Loss Contingencies and Environmental Liabilities Contingent losses are recorded when it is probable a loss has occurred and the loss can be reasonably estimated. When a range of the probable loss exists and no amount within the range is a better estimate than any other amount, the minimum amount in the range is recorded. Unless otherwise required by GAAP, legal fees are expensed as incurred. Environmental liabilities are recorded on an undiscounted basis when environmental remediation or other liabilities become probable and can be reasonably estimated. Environmental expenditures related to past operations that do not generate current or future revenues are expensed. Environmental expenditures related to operations that generate current or future revenues are expensed or capitalized, as appropriate. Certain environmental expenditures receive regulatory accounting treatment and are recorded as regulatory assets. See Notes 4 and 5 for further information. Severance and Special Termination Benefits Duke Energy maintains severance plans for the general employee population under which, in general, the longer a terminated employee worked prior to termination the greater the amount of severance benefits provided. A liability for involuntary severance is recorded once an involuntary severance plan is committed to by management if involuntary severances are probable and can be reasonably estimated. For involuntary severance benefits incremental to its ongoing severance plan benefits, the fair value of the obligation is expensed at the communication date if there are no future service requirements or over the required future service period. Duke Energy also offers special termination benefits under voluntary severance programs. Special termination benefits are recorded immediately upon employee acceptance absent a significant retention period. Otherwise, the cost is recorded over the remaining service period. Employee acceptance of voluntary severance benefits is determined by management based on the facts and circumstances of the benefits being offered. See Note 21 for further information. Guarantees If necessary, liabilities are recognized at the time of issuance or material modification of a guarantee for the estimated fair value of the obligation it assumes. Fair value is estimated using a probability weighted approach. The obligation is reduced over the term of the guarantee or related contract in a systematic and rational method as risk is reduced. Duke Energy recognizes a liability for the best estimate of its loss due to the nonperformance of the guaranteed

Dispositions

Dispositions	12 Months Ended
	Dec. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]
Dispositions	DISPOSITIONS The following table summarizes the Income (Loss) from Discontinued Operations, net of tax recorded on Duke Energy's Consolidated Statements of Operations: Years Ended December 31, (in millions) 2024 2023 2022 Commercial Renewables Disposal Groups $ 12 $ (1,457) $ (1,349) Other (a) (2) 2 26 Income (Loss) from Discontinued Operations, net of tax $ 10 $ (1,455) $ (1,323) (a) Amounts primarily represent income tax adjustments for previously sold businesses not related to the Commercial Renewables Disposal Groups. Sale of Commercial Renewables Segment In 2023, Duke Energy completed the sale of substantially all the assets in the Commercial Renewables business segment. Duke Energy closed on the transaction with Brookfield on October 25, 2023, for proceeds of $1.1 billion, with approximately half of the proceeds received at closing and th e remainder due 18 months after closing. The balance of the remaining proceeds to be received of $551 million is included in Receivable from sales of Commercial Renewables Disposal Groups, as of December 31, 2024, and $531 million is included in Other, within Other Noncurrent Assets, as of December 31, 2023, on Duke Energy's Consolidated Balance Shee ts. The sale of the remaining assets was concluded in January 2025, and net proceeds from these dispositions were not material. Assets Held For Sale and Discontinued Operations The Commercial Renewables Disposal Groups were classified as held for sale and as discontinued operations in the fourth quarter of 2022. No interest from corporate level debt was allocated to discontinued operations and no adjustments were made to the historical activity within the Consolidated Statements of Comprehensive Income, Consolidated Statements of Cash Flows or the Consolidated Statements of Changes in Equity. Unless otherwise noted, the notes to these consolidated financial statements exclude amounts related to discontinued operations for all periods presented. The following table presents the carrying values of the major classes of Assets held for sale and Liabilities associated with assets held for sale included in Duke Energy's Consolidated Balance Sheets. December 31, (in millions) 2024 2023 Current Assets Held for Sale Other $ 4 $ 14 Total current assets held for sale 4 14 Noncurrent Assets Held for Sale Property, Plant and Equipment Cost 109 247 Accumulated depreciation and amortization (24) (57) Net property, plant and equipment 85 190 Operating lease right-of-use assets, net 4 4 Other — 3 Total other noncurrent assets held for sale 4 7 Total Assets Held for Sale $ 93 $ 211 Current Liabilities Associated with Assets Held for Sale Accounts payable $ 19 $ 9 Taxes accrued 1 3 Current maturities of long-term debt 43 5 Unrealized losses on commodity hedges 13 68 Other 4 37 Total current liabilities associated with assets held for sale 80 122 Noncurrent Liabilities Associated with Assets Held for Sale Long-Term debt — 39 Operating lease liabilities 5 5 Asset retirement obligations 5 8 Unrealized losses on commodity hedges 66 94 Other 13 11 Total other noncurrent liabilities associated with assets held for sale 89 157 Total Liabilities Associated with Assets Held for Sale $ 169 $ 279 As of December 31, 2024, and 2023, the NCI balance was $18 million and $66 million, respectively. The following table presents the results of the Commercial Renewables Disposal Groups, which are included in Income (Loss) from Discontinued Operations, net of tax in Duke Energy's Consolidated Statements of Operations. Years Ended December 31, (in millions) 2024 2023 2022 Operating revenues $ 4 $ 330 $ 465 Operation, maintenance and other 22 302 337 Depreciation and amortization (a) — — 201 Property and other taxes 2 45 36 Other income and expenses, net — (8) 2 Interest expense 4 65 10 Loss on disposal 14 1,725 1,748 Loss before income taxes (38) (1,815) (1,865) Income tax benefit (50) (358) (516) Income (Loss) from discontinued operations $ 12 $ (1,457) $ (1,349) Add: Net (income) loss attributable to noncontrolling interest included in discontinued operations (3) 64 108 Net income (loss) from discontinued operations attributable to Duke Energy Corporation $ 9 $ (1,393) $ (1,241) (a) Upon meeting the criteria for assets held for sale, beginning in November 2022 depreciation and amortization expense were ceased. The Commercial Renewables Disposal Groups' assets held for sale amounts presented above reflect pretax impairments recorded against property, plant and equipment of approximately $123 million and $278 million as of December 31, 2024, and 2023, respectively. The carrying amounts for the remaining assets will be updated, if necessary, based on final disposition amounts. Duke Energy has elected not to separately disclose discontinued operations on Duke Energy's Consolidated Statements of Cash Flows. The following table summarizes Duke Energy's cash flows from discontinued operations related to the Commercial Renewables Disposal Groups. Years Ended December 31, (in millions) 2024 2023 2022 Cash flows provided by (used in): Operating activities $ 7 $ 607 $ 213 Investing activities (13) 122 (802) Other Sale Related Matters Duke Energy (Parent) and several Duke Energy renewables project companies, located in the Electric Reliability Council of Texas (ERCOT) market, were named in several lawsuits arising out of Texas Storm Uri, which occurred in February 2021. The legal actions related to all but one of the project companies in this matter transferred to affiliates of Brookfield in conjunction with the transaction closing in October 2023. In May 2024, the remaining claim in the lawsuit was transferred to the buyer in connection with the sale of a portion of the remaining Commercial Renewables assets. See Note 5 for more information. As part of the purchase and sale agreement for the distributed generation group, Duke Energy has agreed to retain certain guarantees, with expiration dates between 2029 through 2034, related to tax equity partners' assets and operations that will be disposed of via sale. Duke Energy has obtained certain guarantees from the buyers in regard to future performance obligations to assist in limiting Duke Energy's exposure under the retained guarantees. The fair value of the guarantees is immaterial as Duke Energy does not believe conditions are likely for performance under these guarantees. Sale of Minority Interest in Duke Energy Indiana Holdco, LLC

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2024
Segment Reporting [Abstract]
Business Segments	BUSINESS SEGMENTS Reportable segments are determined based on information used by the chief operating decision-maker in deciding how to allocate resources and evaluate the performance of the business. The Duke Energy Registrants' chief operating decision-maker (CODM) is the Chief Executive Officer. The CODM evaluates segment performance based on segment income for each of the Duke Energy Registrants' reportable business segments in deciding how to allocate resources and evaluate the performance of the business. Segment income is defined as income from continuing operations net of income attributable to NCI and preferred stock dividends. Segment income, as discussed below, includes intercompany revenues and expenses that are eliminated on the Consolidated Financial Statements. Certain governance costs are allocated to each segment. In addition, direct interest expense and income taxes are included in segment income. In November 2023, the FASB issued a pronouncement to enhance annual and interim disclosure requirements for reportable segments, primarily through enhanced disclosures about significant segment expenses that are regularly provided to or easily computed from information regularly provided to the CODM and included within each reported measure of segment profit or loss. These updated requirements are reflected in this note disclosure. Products and services are sold between affiliate companies and reportable segments of Duke Energy at cost. Substantially all assets and revenues from continuing operations for each of the Duke Energy Registrants are within the U.S. Segment assets as presented in the tables that follow exclude all intercompany assets. Duke Energy Due to Duke Energy's commitment in the fourth quarter of 2022 to sell the Commercial Renewables business segment, Duke Energy's segment structure now includes the following two segments: EU&I and GU&I. Prior period information has been recast to conform to the current segment structure. See Note 2 for further information on the Commercial Renewables Disposal Groups. The EU&I segment includes Duke Energy's regulated electric utilities in the Carolinas, Florida and the Midwest. The regulated electric utilities conduct operations through the Subsidiary Registrants that are substantially all regulated and, accordingly, qualify for regulatory accounting treatment. EU&I also includes Duke Energy's electric transmission infrastructure investments and the offshore wind contract for Carolina Long Bay. Refer to Note 2 for further information. The GU&I segment includes Piedmont, Duke Energy's natural gas local distribution companies in Ohio and Kentucky, and Duke Energy's natural gas storage, midstream pipeline, and renewable natural gas investments. GU&I's operations are substantially all regulated and, accordingly, qualify for regulatory accounting treatment. The remainder of Duke Energy’s operations is presented as Other, which is primarily comprised of interest expense on holding company debt, unallocated corporate costs and Duke Energy’s wholly owned captive insurance company, Bison. Other also includes Duke Energy's interest in NMC. See Note 13 for additional information on the investment in NMC. Business segment information is presented in the following tables. Year Ended December 31, 2024 Electric Gas Total Utilities and Utilities and Reportable (in millions) Infrastructure Infrastructure Segments Other Eliminations Total Unaffiliated revenues $ 28,020 $ 2,299 $ 30,319 $ 38 $ — $ 30,357 Intersegment revenues 73 91 164 119 (283) — Total revenues $ 28,093 $ 2,390 $ 30,483 $ 157 $ (283) $ 30,357 Less: Fuel used in electric generation and purchased power $ 9,285 $ — $ 9,285 $ — $ (79) $ 9,206 Cost of natural gas — 565 565 — — 565 Operation, maintenance and other 5,185 478 5,663 (79) (195) 5,389 Depreciation and amortization 5,128 400 5,528 293 (28) 5,793 Property and other taxes 1,305 149 1,454 12 — 1,466 Impairment of assets and other charges 37 — 37 1 — 38 Interest expense 2,006 256 2,262 1,245 (123) 3,384 Income tax expense (benefit) 820 99 919 (329) — 590 Other Segment Items Noncontrolling interests (a) 88 (1) 87 — — 87 Preferred dividends — — — 106 — 106 Preferred redemption costs — — — 16 — 16 Add: Equity in (losses) earnings of unconsolidated affiliates (11) (48) (59) 50 — (9) Add: Other (b) 542 58 600 229 (142) 687 Segment income (loss) (c)(d)(e) $ 4,770 $ 454 $ 5,224 $ (829) $ — $ 4,395 Discontinued Operations 7 Net income available to Duke Energy Corporation Common Stockholders $ 4,402 Add back: Net income (loss) attributable to noncontrolling interest 90 Add back: Preferred dividends 106 Add back: Preferred redemption costs 16 Net income $ 4,614 Capital investments expenditures and acquisitions $ 10,689 $ 1,313 $ 12,002 $ 261 $ — $ 12,263 Segment assets 164,010 18,131 182,141 4,202 — 186,343 (a) Net income (loss) attributable to NCI related to continuing operations. (b) Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net. (c) EU&I includes the following in the referenced captions on the Consolidated Statements of Operations: • $42 million recorde d within Impairment of assets and other charges, $2 million within Operations, maintenance and other, and an $11 million reduction within Interest Expense related to South Carolinas rate case orders for Duke Energy Carolinas and Duke Energy Progress. See Note 4 for further information. • $29 million recorded as a reduction of Operating revenues and $4 million as a reduction within Noncontrolling interests related to a Duke Energy Indiana regulatory liability associated with certain employee post-retirement benefits. See Note 4 for further information. • $17 million recorded as a reduction of Operating revenues related to nonrecurring customer billing adjustments as a result of implementation of a new customer system. • $15 million recorded within Equity in (losses) earnings of unconsolidated affiliates, primarily related to impairments for certain joint venture electric transmission projects, and $4 million within Gains on sales of other assets and other, net. (d) GU&I includes $1 million recorded with Operation, maintenance and other and $3 million as a charge within Other income and expenses on the Consolidated Statements of Operations related to nonrecurring customer billing adjustments as a result of implementation of a new customer system. Additionally, GU&I includes $54 million recorded within Equity in (losses) earnings of unconsolidated affiliates on the Consolidated Statements of Operations related to impairments for certain renewable natural gas investments. See Note 13 for further information. (e) Other includes $16 million recorded as Preferred Redemption Costs on the Consolidated Statements of Operations related to the redemption of Series B Preferred Stock. See Note 20 for further information. Additionally, Other includes $23 million recorded within Operation, maintenance and other on the Consolidated Statements of Operations related to an insurance deductible for Hurricane Helene property losses. Year Ended December 31, 2023 Electric Gas Total Utilities and Utilities and Reportable (in millions) Infrastructure Infrastructure Segments Other Eliminations Total Unaffiliated revenues $ 26,846 $ 2,177 $ 29,023 $ 37 $ — $ 29,060 Intersegment revenues 75 89 164 97 (261) — Total revenues $ 26,921 $ 2,266 $ 29,187 $ 134 $ (261) $ 29,060 Less: Fuel used in electric generation and purchased power $ 9,164 $ — $ 9,164 $ — $ (78) $ 9,086 Cost of natural gas — 593 593 — — 593 Operation, maintenance and other 5,309 455 5,764 36 (175) 5,625 Depreciation and amortization 4,684 349 5,033 248 (28) 5,253 Property and other taxes 1,320 129 1,449 (49) — 1,400 Impairment of assets and other charges 75 (4) 71 14 — 85 Interest expense 1,850 217 2,067 1,097 (150) 3,014 Income tax expense (benefit) 742 116 858 (420) — 438 Other Segment Items Noncontrolling interests (a) 99 (2) 97 — — 97 Preferred dividends — — — 106 — 106 Add: Equity in earnings of unconsolidated affiliates 7 40 47 66 — 113 Add: Other (b) 538 66 604 216 (170) 650 Segment income (loss) (c)(d) $ 4,223 $ 519 $ 4,742 $ (616) $ — $ 4,126 Discontinued operations (1,391) Net income available to Duke Energy Corporation Common Stockholders $ 2,735 Add back: Net income (loss) attributable to noncontrolling interest 33 Add back: Preferred dividends 106 Net income $ 2,874 Capital investments expenditures and acquisitions (e) $ 10,135 $ 1,492 $ 11,627 $ 995 $ — $ 12,622 Segment assets (f) 155,449 17,349 172,798 4,095 — 176,893 (a) Net income (loss) attributable to NCI related to continuing operations. (b) Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net. (c) EU&I includes $35 million recorded with Impairment of assets and other charges and $8 million within Operations, maintenance and other primarily related to the North Carolina rate case order on Duke Energy Carolinas' Consolidated Statements of Operations; it also includes $33 million recorded within Impairment of assets and other charges and $8 million within Operations, maintenance and other primarily related to the North Carolina rate case order on Duke Energy Progress' Consolidated Statements of Operations. See Note 4 for additional information. (d) Other includes $110 million recorded within Operations, maintenance and other and $14 million within Impairments of assets and other charges primarily related to strategic repositioning as the Company transitions to a fully regulated utility on the Consolidated Statements of Operations. See Note 21 for additional information. (e) Other includes capital investments expenditures and acquisitions related to the Commercial Renewables Disposal Groups. (f) Other includes Assets Held for Sale balances related to the Commercial Renewables Disposal Groups. See Note 2 for further information. Year Ended December 31, 2022 Electric Gas Total Utilities and Utilities and Reportable (in millions) Infrastructure Infrastructure Segments Other Eliminations Total Unaffiliated revenues $ 25,990 $ 2,748 $ 28,738 $ 30 $ — $ 28,768 Intersegment revenues 34 92 126 92 (218) — Total revenues $ 26,024 $ 2,840 $ 28,864 $ 122 $ (218) $ 28,768 Less: Fuel used in electric generation and purchased power $ 8,862 $ — $ 8,862 $ — $ (80) $ 8,782 Cost of natural gas — 1,276 1,276 — — 1,276 Operation, maintenance and other 5,354 532 5,886 (23) (129) 5,734 Depreciation and amortization 4,550 327 4,877 236 (27) 5,086 Property and other taxes 1,315 138 1,453 13 — 1,466 Impairment of assets and other charges 374 (12) 362 72 — 434 Interest expense 1,565 182 1,747 778 (86) 2,439 Income tax expense (benefit) 536 8 544 (244) — 300 Other Segment Items Noncontrolling interests (a) 13 — 13 — — 13 Preferred dividends — — — 106 — 106 Add: Equity in earnings of unconsolidated affiliates 7 20 27 86 — 113 Add: Other (b) 467 59 526 (7) (105) 414 Segment income (loss) (c)(d) $ 3,929 $ 468 $ 4,397 $ (737) $ (1) $ 3,659 Discontinued operations (1,215) Net income available to Duke Energy Corporation Common Stockholders $ 2,444 Add back: Net income (loss) attributable to noncontrolling interest (95) Add back: Preferred dividends 106 Net income $ 2,455 Capital investments expenditures and acquisitions (e) $ 8,985 $ 1,295 $ 10,280 $ 1,139 $ — $ 11,419 Segment assets (f) 152,104 16,411 168,515 9,571 — 178,086 (a) Net income (loss) attributable to NCI related to continuing operations. (b) Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net. (c) EU&I includes $386 million recorded within Impairment of assets and other charges, $46 million as a reduction within Regulated electric revenues and $34 million within Noncontrolling Interests related to the Duke Energy Indiana court rulings on coal ash on the Consolidated Statements of Operations. See Note 4 for additional information. (d) Other includes $72 million recorded within Impairment of assets and other charges, $71 million within Operations, maintenance and other and a $7 million gain within Gains on sales of other assets related to costs attributable to business transformation, including long-term real estate strategy changes and workforce realignment on the Consolidated Statements of Operations; it also includes $25 million recorded within Operations, maintenance and other related to litigation on the Consolidated Statements of Operations. (e) Other includes capital investments expenditures and acquisitions related to the Commercial Renewables Disposal Groups. (f) Other includes Assets Held for Sale balances related to the Commercial Renewables Disposal Groups. See Note 2 for further information. Major Customers No Subsidiary Registrant has an individual customer representing more than 10% of its revenues for the year ended December 31, 2024. Products and Services The following table summarizes revenues of the reportable segments by type. Retail Wholesale Retail Total (in millions) Electric Electric Natural Gas Other Revenues 2024 Electric Utilities and Infrastructure $ 24,593 $ 2,219 $ — $ 1,281 $ 28,093 Gas Utilities and Infrastructure — — 2,320 70 2,390 Total Reportable Segments $ 24,593 $ 2,219 $ 2,320 $ 1,351 $ 30,483 2023 Electric Utilities and Infrastructure $ 23,484 $ 2,193 $ — $ 1,244 $ 26,921 Gas Utilities and Infrastructure — — 2,199 67 2,266 Total Reportable Segments $ 23,484 $ 2,193 $ 2,199 $ 1,311 $ 29,187 2022 Electric Utilities and Infrastructure $ 22,036 $ 2,882 $ — $ 1,106 $ 26,024 Gas Utilities and Infrastructure — — 2,535 305 2,840 Total Reportable Segments $ 22,036 $ 2,882 $ 2,535 $ 1,411 $ 28,864 Duke Energy Carolinas Duke Energy Carolinas has one reportable segment, EU&I. EU&I generates, distributes and sells electricity in North Carolina and South Carolina. EU&I conducts operations primarily through Duke Energy Carolinas. The remainder of Duke Energy Carolinas' operations is presented as Other. Year Ended December 31, 2024 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 9,718 $ — $ 9,718 Less: Fuel used in electric generation and purchased power $ 3,251 $ — $ 3,251 Operation, maintenance and other 1,710 30 1,740 Depreciation and amortization 1,768 — 1,768 Property and other taxes 346 — 346 Impairment of assets and other charges 31 — 31 Interest expense 722 — 722 Income tax expense (benefit) 233 (7) 226 Add: Other segment items (a) 252 (3) 249 Segment income (loss) / Net income $ 1,909 $ (26) $ 1,883 Capital expenditures $ 3,966 $ — $ 3,966 Segment assets 54,782 223 55,005 Year Ended December 31, 2023 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 8,288 $ — $ 8,288 Less: Fuel used in electric generation and purchased power $ 2,524 $ — $ 2,524 Operation, maintenance and other 1,689 85 1,774 Depreciation and amortization 1,593 — 1,593 Property and other taxes 320 — 320 Impairment of assets and other charges 44 — 44 Interest expense 686 — 686 Income tax expense (benefit) 162 (21) 141 Add: Other segment items (a) 267 (3) 264 Segment income (loss) / Net income $ 1,537 $ (67) $ 1,470 Capital expenditures $ 3,733 $ — $ 3,733 Segment assets 51,908 202 52,110 Year Ended December 31, 2022 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 7,857 $ — $ 7,857 Less: Fuel used in electric generation and purchased power $ 2,015 $ — $ 2,015 Operation, maintenance and other 1,845 47 1,892 Depreciation and amortization 1,526 — 1,526 Property and other taxes 340 — 340 Impairment of assets and other charges (18) 44 26 Interest expense 557 — 557 Income tax expense (benefit) 148 (22) 126 Add: Other segment items (a) 228 (3) 225 Segment income (loss) / Net income $ 1,672 $ (72) $ 1,600 Capital expenditures $ 3,304 $ — $ 3,304 Segment assets 49,956 390 50,346 (a) Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net. Progress Energy Progress Energy has one reportable segment, EU&I. EU&I generates, distributes and sells electricity in North Carolina, South Carolina and Florida. EU&I conducts operations primarily through its wholly owned subsidiaries, Duke Energy Progress and Duke Energy Florida. The remainder of Progress Energy's operations is presented as Other. Year Ended December 31, 2024 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 13,612 $ 21 $ 13,633 Less: Fuel used in electric generation and purchased power $ 4,755 $ — $ 4,755 Operation, maintenance and other 2,413 50 2,463 Depreciation and amortization 2,393 — 2,393 Property and other taxes 617 — 617 Impairment of assets and other charges 6 — 6 Interest expense 949 115 1,064 Income tax expense (benefit) 465 (39) 426 Add: Other segment items (a) 224 38 262 Segment income (loss) / Net income $ 2,238 $ (67) $ 2,171 Capital expenditures $ 5,252 $ — $ 5,252 Segment assets 67,951 3,685 71,636 Year Ended December 31, 2023 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 13,524 $ 20 $ 13,544 Less: Fuel used in electric generation and purchased power $ 5,026 $ — $ 5,026 Operation, maintenance and other 2,554 82 2,636 Depreciation and amortization 2,151 — 2,151 Property and other taxes 644 — 644 Impairment of assets and other charges 28 — 28 Interest expense 840 114 954 Income tax expense (benefit) 426 (49) 377 Add: Other segment items (a) 210 18 228 Segment income (loss) / Net income $ 2,065 $ (109) $ 1,956 Capital expenditures $ 4,917 $ — $ 4,917 Segment assets 63,182 3,912 67,094 Year Ended December 31, 2022 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 13,106 $ 19 $ 13,125 Less: Fuel used in electric generation and purchased power $ 5,078 $ — $ 5,078 Operation, maintenance and other 2,395 63 2,458 Depreciation and amortization 2,142 — 2,142 Property and other taxes 611 (4) 607 Impairment of assets and other charges 5 7 12 Interest expense 716 128 844 Income tax expense (benefit) 396 (48) 348 Add: Other segment items (a) 205 (13) 192 Segment income (loss) / Net income $ 1,968 $ (140) $ 1,828 Capital expenditures $ 4,317 $ — $ 4,317 Segment assets 62,183 3,896 66,079 (a) Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net. Duke Energy Progress Duke Energy Progress has one reportable segment, EU&I. EU&I generates, distributes and sells electricity in North Carolina and South Carolina. EU&I conducts operations primarily through Duke Energy Progress. The remainder of Duke Energy Progress' operations is presented as Other. Year Ended December 31, 2024 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 7,017 $ — $ 7,017 Less: Fuel used in electric generation and purchased power $ 2,409 $ — $ 2,409 Operation, maintenance and other 1,370 18 1,388 Depreciation and amortization 1,336 — 1,336 Property and other taxes 177 — 177 Impairment of assets and other charges 6 — 6 Interest expense 492 1 493 Income tax expense (benefit) 194 (5) 189 Add: Other segment items (a) 138 7 145 Segment income (loss) / Net income $ 1,171 $ (7) $ 1,164 Capital expenditures $ 2,803 $ — $ 2,803 Segment assets 39,402 91 39,493 Year Ended December 31, 2023 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 6,488 $ — $ 6,488 Less: Fuel used in electric generation and purchased power $ 2,203 $ — $ 2,203 Operation, maintenance and other 1,342 37 1,379 Depreciation and amortization 1,266 — 1,266 Property and other taxes 164 — 164 Impairment of assets and other charges 29 — 29 Interest expense 427 — 427 Income tax expense (benefit) 158 (9) 149 Add: Other segment items (a) 128 (1) 127 Segment income (loss) / Net income $ 1,027 $ (29) $ 998 Capital expenditures $ 2,387 $ — $ 2,387 Segment assets 36,820 104 36,924 Year Ended December 31, 2022 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 6,753 $ — $ 6,753 Less: Fuel used in electric generation and purchased power $ 2,492 $ — $ 2,492 Operation, maintenance and other 1,447 28 1,475 Depreciation and amortization 1,187 — 1,187 Property and other taxes 190 — 190 Impairment of assets and other charges 5 2 7 Interest expense 354 — 354 Income tax expense (benefit) 165 (7) 158 Add: Other segment items (a) 119 (1) 118 Segment income (loss) / Net income $ 1,032 $ (24) $ 1,008 Capital expenditures $ 2,070 $ — $ 2,070 Segment assets 36,631 121 36,752 (a) Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net. Duke Energy Florida Duke Energy Florida has one reportable segment, EU&I. EU&I generates, distributes and sells electricity in Florida. EU&I conducts operations primarily through Duke Energy Florida. The remainder of Duke Energy Florida's operations is presented as Other. Year Ended December 31, 2024 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 6,595 $ — $ 6,595 Less: Fuel used in electric generation and purchased power $ 2,346 $ — $ 2,346 Operation, maintenance and other 1,043 12 1,055 Depreciation and amortization 1,057 — 1,057 Property and other taxes 440 — 440 Interest expense 457 — 457 Income tax expense (benefit) 271 (3) 268 Add: Other segment items (a) 86 3 89 Segment income (loss) / Net income $ 1,067 $ (6) $ 1,061 Capital expenditures $ 2,449 $ — $ 2,449 Segment assets 28,549 20 28,569 Year Ended December 31, 2023 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 7,036 $ — $ 7,036 Less: Fuel used in electric generation and purchased power $ 2,823 $ — $ 2,823 Operation, maintenance and other 1,212 27 1,239 Depreciation and amortization 885 — 885 Property and other taxes 480 — 480 Impairment of assets and other charges (1) — (1) Interest expense 413 — 413 Income tax expense (benefit) 268 (7) 261 Add: Other segment items (a) 82 (2) 80 Segment income (loss) / Net income $ 1,038 $ (22) $ 1,016 Capital expenditures $ 2,529 $ — $ 2,529 Segment assets 26,362 239 26,601 Year Ended December 31, 2022 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 6,353 $ — $ 6,353 Less: Fuel used in electric generation and purchased power $ 2,586 $ — $ 2,586 Operation, maintenance and other 948 19 967 Depreciation and amortization 955 — 955 Property and other taxes 421 — 421 Impairment of assets and other charges — 4 4 Interest expense 362 — 362 Income tax expense (benefit) 231 (6) 225 Add: Other segment items (a) 86 (10) 76 Segment income (loss) / Net income $ 936 $ (27) $ 909 Capital expenditures $ 2,247 $ — $ 2,247 Segment assets 25,552 2 25,554 (a) Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net. Duke Energy Ohio Duke Energy Ohio has two reportable segments, EU&I and GU&I. EU&I transmits and distributes electricity in portions of Ohio and generates, distributes and sells electricity in portions of Northern Kentucky. GU&I transports and sells natural gas in portions of Ohio and Northern Kentucky. Both reportable segments conduct operations primarily through Duke Energy Ohio and its wholly owned subsidiary, Duke Energy Kentucky. The remainder of Duke Energy Ohio's operations is presented as Other. Year Ended December 31, 2024 Electric Gas Total Utilities and Utilities and Reportable Eliminations/ (in millions) Infrastructure Infrastructure Segments Other Total Total revenues $ 1,905 $ 640 $ 2,545 — $ 2,545 Less: Fuel used in electric generation and purchased power $ 538 $ — $ 538 $ — $ 538 Cost of natural gas — 142 142 — 142 Operation, maintenance and other 366 109 475 10 485 Depreciation and amortization 273 131 404 (1) 403 Property and other taxes 306 94 400 — 400 Interest expense 126 68 194 (2) 192 Income tax expense (benefit) 47 18 65 (1) 64 Add: Other segment items (a) 15 5 20 — 20 Segment income (loss) / Net income $ 264 $ 83 $ 347 $ (6) $ 341 Capital expenditures $ 535 $ 280 $ 815 $ — $ 815 Segment assets 8,211 4,506 12,717 51 12,768 Year Ended December 31, 2023 Electric Gas Total Utilities and Utilities and Reportable Eliminations/ (in millions) Infrastructure Infrastructure Segments Other Total Total revenues $ 1,868 $ 639 $ 2,507 $ — $ 2,507 Less: Fuel used in electric generation and purchased power $ 608 $ — 608 $ — 608 Cost of natural gas — 163 163 — 163 Operation, maintenance and other 351 118 469 9 478 Depreciation and amortization 257 110 367 — 367 Property and other taxes 294 70 364 — 364 Impairment of assets and other charges 2 — 2 1 3 Interest expense 116 53 169 — 169 Income tax expense (benefit) 42 23 65 (2) 63 Add: Other segment items (a) 29 14 43 (1) 42 Segment income (loss) / Net income $ 227 $ 116 $ 343 $ (9) $ 334 Capital expenditures $ 520 $ 419 $ 939 $ — $ 939 Segment assets 7,978 4,346 12,324 (108) 12,216 Year Ended December 31, 2022 Electric Gas Total Utilities and Utilities and Reportable Eliminations/ (in millions) Infrastructure Infrastructure Segments Other Total Total revenues $ 1,798 $ 716 $ 2,514 $ — $ 2,514 Less: Fuel used in electric generation and purchased power $ 657 $ — $ 657 $ — $ 657 Cost of natural gas — 261 261 — 261 Operation, maintenance and other 345 170 515 8 523 Depreciation and amortization 221 103 324 — 324 Property and other taxes 288 81 369 — 369 Impairment of assets and other charges 1 (12) (11) 1 (10) Interest expense 86 43 129 — 129 Income tax expense (benefit) 24 (43) (19) (2) (21) Add: Other segment items (a) 13 8 21 (1) 20 Segment income (loss) / Net income $ 189 $ 121 $ 310 $ (8) $ 302 Capital expenditures $ 488 $ 362 $ 850 $ — $ 850 Segment assets 7,504 4,164 11,668 (162) 11,506 (a) Other segment items for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net. Duke Energy Indiana Duke Energy Indiana has one reportable segment, EU&I. EU&I generates, distributes and sells electricity in Indiana. EU&I conducts operations primarily through Duke Energy Indiana. The remainder of Duke Energy Indiana's operations is presented as Other. Year Ended December 31, 2024 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 3,040 $ — $ 3,040 Less: Fuel used in electric generation and purchased power $ 964 $ — $ 964 Operation, maintenance and other 666 5 671 Depreciation and amortization 676 — 676 Property and other taxes 50 — 50 Interest expense 228 1 229 Income tax expense (benefit) 72 (1) 71 Add: Other segment items (a) 62 — 62 Segment income (loss) / Net income $ 446 $ (5) $ 441 Capital expenditures $ 935 $ — $ 935 Segment assets 15,726 1 15,727 Year Ended December 31, 2023 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 3,399 $ — $ 3,399 Less: Fuel used in electric generation and purchased power $ 1,217 $ — $ 1,217 Operation, maintenance and other 695 18 713 Depreciation and amortization 666 — 666 Property and other taxes 59 — 59 Impairment of assets and other charges (1) 1 — Interest expense 213 — 213 Income tax expense (benefit) 115 (5) 110 Add: Other segment items (a) 77 (1) 76 Segment income (loss) / Net income $ 512 $ (15) $ 497 Capital expenditures $ 961 $ — $ 961 Segment assets 14,966 (155) 14,811 Year Ended December 31, 2022 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 3,922 $ — $ 3,922 Less: Fuel used in electric generation and purchased power $ 1,819 $ — $ 1,819 Operation, maintenance and other 719 10 729 Depreciation and amortization 645 — 645 Property and other taxes 75 — 75 Impairment of assets and other charges 387 1 388 Interest expense 189 — 189 Income tax expense (benefit) (20) (4) (24) Add: Other segment items (a) 38 (2) 36 Segment income (loss) / Net income $ 146 $ (9) $ 137 Capital expenditures $ 877 $ — $ 877 Segment assets 14,864 (210) 14,654 (a) Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net. Piedmont Piedmont has one reportable segment, GU&I. GU&I distributes and sells natural gas in North Carolina, South Carolina and Tennessee. GU&I conducts operations primarily through Piedmont. The remainder of Piedmont's operations is presented as Other. Year Ended December 31, 2024 Gas Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 1,729 $ — $ 1,729 Less: Cost of natural gas $ 423 $ — $ 423 Operation, maintenance and other 355 4 359 Depreciation and amortization 261 — 261 Property and other taxes 55 — 55 Interest expense 185 — 185 Income tax expense (benefit) 94 1 95 Other Segment Items Add: Equity in earnings of unconsolidated affiliates — 8 8 Add: Other (a) 54 — 54 Segment income (loss) / Net income $ 410 $ 3 $ 413 Capital expenditures $ 1,025 $ — $ 1,025 Segment assets 11,707 92 11,799 Year Ended December 31, 2023 Gas Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 1,628 $ — $ 1,628 Less: Cost of natural gas $ 430 $ — $ 430 Operation, maintenance and other 336 8 344 Depreciation and amortization 237 — 237 Property and other taxes 59 — 59 Impairment of assets and other charges (4) — (4) Interest expense 165 — 165 Income tax expense (benefit) 84 — 84 Other Segment Items Add: Equity in earnings of unconsolidated affiliates — 9 9 Add: Other (a) 59 (2) 57 Segment income (loss) / Net income $ 380 $ (1) $ 379 Capital expenditures $ 1,036 $ — $ 1,036 Segment assets 10,978 89 11,067 Year Ended December 31, 2022 Gas Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 2,124 $ — $ 2,124 Less: Cost of natural gas $ 1,015 $ — $ 1,015 Operation, maintenance and other 360 8 368 Depreciation and amortization 222 — 222 Property and other taxes 57 — 57 Impairment of assets and other charges — 18 18 Interest expense 140 — 140 Income tax expense (benefit) 43 (4) 39 Other Segment Items Add: Equity in earnings of unconsolidated affiliates — 8 8 Add: Other (a) 47 3 50 Segment income (loss) / Net income $ 334 $ (11) $ 323 Capital expenditures $ 862 $ — $ 862 Segment assets 10,243 92 10,335 (a) Other includes Gains on sales of other assets and other, net, and Other income and expenses, net.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2024
Regulated Operations [Abstract]
Regulatory Matters	REGULATORY MATTERS REGULATORY ASSETS AND LIABILITIES The Duke Energy Registrants record regulatory assets and liabilities that result from the ratemaking process. See Note 1 for further information. The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets of Duke Energy and Progress Energy. See separate tables below for balances by individual registrant. Duke Energy Progress Energy December 31, December 31, (in millions) 2024 2023 2024 2023 Regulatory Assets AROs – coal ash $ 3,384 $ 3,214 $ 1,335 $ 1,230 Accrued pension and OPEB 2,524 2,389 828 757 Storm cost deferrals 1,951 407 1,238 298 Storm cost securitized balance, net 1,023 890 822 682 AROs – nuclear and other 952 1,179 905 1,127 Nuclear asset securitized balance, net 771 830 771 830 Debt fair value adjustment 719 774 — — COR regulatory asset 646 371 571 337 Deferred fuel and purchased power 588 2,486 282 1,173 Hedge costs deferrals 352 749 126 323 PISCC and deferred operating expenses 331 357 37 42 Retired generation facilities 281 275 202 220 Customer connect project 257 260 116 125 Grid Deferral 255 210 54 51 Incremental COVID-19 expenses 231 237 89 80 Vacation accrual 228 228 43 43 Deferred asset – Lee and Harris COLA 215 252 10 15 Advanced metering infrastructure (AMI) 204 243 70 92 Demand side management (DSM) / Energy efficiency (EE) 199 201 199 191 CEP deferral 195 193 — — NCEMPA deferrals 179 172 179 172 Decoupling 162 115 32 15 Nuclear deferral 134 131 53 42 Deferred pipeline integrity costs 129 133 — — COR settlement 110 115 29 30 Coal plant securitization 102 8 39 8 Derivatives – natural gas supply contracts 94 147 — — Deferred coal ash handling system costs 77 86 17 21 Qualifying facility contract buyouts 62 68 62 68 Tennessee ARM Deferral 33 20 — — Network Integration Transmission Services deferral 31 31 — — Transmission expansion obligation 31 30 — — East Bend deferrals 24 28 — — Propane caverns 24 26 — — Other 512 411 156 119 Total regulatory assets 17,010 17,266 8,265 8,091 Less: Current portion 2,756 3,648 1,647 1,661 Total noncurrent regulatory assets $ 14,254 $ 13,618 $ 6,618 $ 6,430 Regulatory Liabilities COR regulatory liability $ 5,436 $ 5,497 $ 2,984 $ 2,805 Net regulatory liability related to income taxes 5,397 5,901 1,884 2,008 AROs – nuclear and other 2,289 1,673 — — Deferred Nuclear PTC 676 — 95 — Hedge cost deferrals 583 443 281 208 Renewable energy credits 241 237 139 138 Accrued pension and OPEB 232 266 12 — Deferred fuel and purchased power 223 137 94 14 DSM / EE 58 89 — — DOE Settlement — 32 — 32 Other 984 1,133 291 296 Total regulatory liabilities 16,119 15,408 5,780 5,501 Less: Current portion 1,425 1,369 522 418 Total noncurrent regulatory liabilities $ 14,694 $ 14,039 $ 5,258 $ 5,083 Descriptions of regulatory assets and liabilities summarized in the tables above and below follow. See tables below for recovery and amortization periods at the separate registrants. AROs – coal ash. Represents deferred depreciation and accretion related to the legal obligation to close ash basins. The costs are deferred until recovery treatment has been determined. See Notes 1 and 10 for additional information. AROs – nuclear and other. Represents regulatory assets or liabilities, including deferred depreciation and accretion, related to legal obligations associated with the future retirement of property, plant and equipment, excluding amounts related to coal ash. The AROs relate primarily to decommissioning nuclear power facilities. The amounts also include certain deferred gains and losses on NDTF investments. See Notes 1 and 10 for additional information. Deferred fuel and purchased power. Represents certain energy-related costs that are recoverable or refundable as approved by the applicable regulatory body. Accrued pension and OPEB. Accrued pension and OPEB represent regulatory assets and liabilities related to each of the Duke Energy Registrants’ respective shares of unrecognized actuarial gains and losses and unrecognized prior service cost and credit attributable to Duke Energy’s pension plans and OPEB plans. The regulatory asset or liability is amortized with the recognition of actuarial gains and losses and prior service cost and credit to net periodic benefit costs for pension and OPEB plans. The accrued pension and OPEB regulatory assets are expected to be recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. Storm cost securitized balance, net. Represents the North Carolina portion of storm restoration expenditures related to Hurricane Florence, Hurricane Michael, Hurricane Dorian and Winter Storm Diego (2018 and 2019 events). The South Carolina portion of storm restoration expenditures are related to 2014 Ice Storms Pax and Ulysses, Hurricane Matthew, Hurricane Florence, Hurricane Michael, Hurricane Dorian, and Winter Storms Izzy and Jasper. Nuclear asset securitized balance, net. Represents the balance associated with Crystal River Unit 3 retirement approved for recovery by the FPSC on September 15, 2015, and the upfront financing costs securitized in 2016 with issuance of the associated bonds. The regulatory asset balance is net of the AFUDC equity portion. Debt fair value adjustment. Purchase accounting adjustments recorded at the Duke Energy (Parent) level to state the carrying value of debt at fair value in connection with the Duke Energy mergers with Progress Energy in 2012 and Piedmont in 2016. Amount is amortized over the life of the related debt. Hedge costs deferrals. Amounts relate to realized and unrealized gains and losses on derivatives recorded as a regulatory asset or liability, respectively, until the contracts are settled. Storm cost deferrals. Represents deferred incremental costs incurred related to major weather-related events. COR regulatory asset. Represents the excess of spend over funds received from customers to cover the future removal of property, plant and equipment from retired or abandoned sites as property is retired, net of certain deferred gains on NDTF investments. PISCC and deferred operating expenses. Represents deferred depreciation and operating expenses as well as carrying costs on the portion of capital expenditures placed in service but not yet reflected in retail rates as plant in service. Retired generation facilities. Represents amounts to be recovered for facilities that have been retired and are probable of recovery. Deferred asset – Lee and Harris COLA. Represents deferred costs incurred for the canceled Lee and Harris nuclear projects. Customer connect project. Represents incremental operating expenses and carrying costs on deferred amounts related to the deployment of the new customer information system. AMI. Represents deferred costs related to the installation of AMI meters and remaining net book value of non-AMI meters to be replaced at Duke Energy Carolinas, net book value of existing meters at Duke Energy Florida , Duke Energy Progress and Duke Energy Ohio and future recovery of net book value of electromechanical meters that have been replaced with AMI meters at Duke Energy Indiana. Incremental COVID-19 expenses. Represents incremental costs related to ensuring continuity and quality of service in a safe manner during the COVID-19 pandemic. Vacation accrual. Represents vacation entitlement, which is generally recovered in the following year. Grid deferral . Represents deferred incremental operation and maintenance expense, depreciation and property taxes associated with grid improvement plans. DSM/EE. Deferred costs related to various DSM and EE programs recoverable or refundable as approved by the applicable regulatory body. CEP deferral . Represents deferred depreciation, PISCC and deferred property tax for Duke Energy Ohio Gas capital assets for the CEP. NCEMPA deferrals. Represents retail allocated cost deferrals and returns associated with the additional ownership interest in assets acquired from NCEMPA in 2015. Derivatives – natural gas supply contracts . Represents costs for certain long-dated, fixed quantity forward natural gas supply contracts, which are recoverable through PGA clauses. Deferred pipeline integrity costs. Represents pipeline integrity management costs in compliance with federal regulations. Nuclear deferral. Includes amounts related to nuclear plant outage and refueling costs, which are deferred and recovered over the nuclear fuel cycle. COR settlement. Represents approved COR settlements that are being amortized over the average remaining lives, at the time of approval, of the associated assets. Decoupling. Relates primarily to margin and revenue decoupling. Deferred coal ash handling system costs . Represents deferred depreciation and returns associated with capital assets related to converting the ash handling system from wet to dry. Qualifying facility contract buyouts. Represents termination payments for regulatory recovery through the capacity clause. Network Integration Transmission Services deferral. Represents a deferral of costs and return related transmission costs. Transmission expansion obligation. Represents transmission expansion obligations related to Duke Energy Ohio's withdrawal from MISO. East Bend deferrals. Represents amounts to be recovered for deferred costs and depreciation related to the East Bend station. Propane Caverns. Represents amounts for costs related to propane inventory, the net book value of remaining assets and decommissioning costs at Duke Energy Ohio. Tennessee ARM Deferral. Represents amounts to be recovered for uncollected revenue for 2022 and deferred depreciation and carrying costs on the portion of capital expenditures placed in service but not yet reflected in rates. Coal Plant Securitization. Represents the North Carolina portion of incremental depreciation and net book value of certain coal-fired plants to be recovered in a future securitization. Net regulatory liability related to income taxes . Amounts for all registrants include regulatory liabilities related primarily to impacts from the Tax Act. See Note 24 for additional information. Amounts have no immediate impact on rate base as regulatory assets are offset by deferred tax liabilities. COR regulatory liability. Represents funds received from customers to cover the future removal of property, plant and equipment from retired or abandoned sites as property is retired. Also includes certain deferred gains on NDTF investments. DOE Settlement. Represents litigation settlement funds received resulting from the DOE’s failure to accept spent nuclear fuel and other radioactive waste from the Crystal River Unit 3 during 2014-2018 as required under the Nuclear Waste Policy Act. Deferred Nuclear PTC. Represents the net realizable value of nuclear PTCs that will be passed back to customers over time. Renewable Energy Credits. Represents certificates for the environmental benefits of renewable energy that will be returned to customers in a future period. RESTRICTIONS ON THE ABILITY OF CERTAIN SUBSIDIARIES TO MAKE DIVIDENDS, ADVANCES AND LOANS TO DUKE ENERGY As a condition to the approval of merger transactions, the NCUC, PSCSC, PUCO, KPSC and IURC imposed conditions on the ability of Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio, Duke Energy Kentucky, Duke Energy Indiana and Piedmont to transfer funds to Duke Energy through loans or advances, as well as restricted amounts available to pay dividends to Duke Energy. Certain subsidiaries may transfer funds to the Parent by obtaining approval of the respective state regulatory commissions. These conditions imposed restrictions on the ability of the public utility subsidiaries to pay cash dividends as discussed below. Duke Energy Progress and Duke Energy Florida also have restrictions imposed by their first mortgage bond indentures, which in certain circumstances, limit their ability to make cash dividends or distributions on common stock. Amounts restricted as a result of these provisions were not material at December 31, 2024. Additionally, certain other subsidiaries of Duke Energy have restrictions on their ability to dividend, loan or advance funds to Duke Energy due to specific legal or regulatory restrictions, including, but not limited to, minimum working capital and tangible net worth requirements. The restrictions discussed below were not a material amount of Duke Energy's and Progress Energy's net assets at December 31, 2024. Duke Energy Carolinas Duke Energy Carolinas must limit cumulative distributions subsequent to mergers to (i) the amount of retained earnings on the day prior to the closing of the mergers, plus (ii) any future earnings recorded. Duke Energy Progress Duke Energy Progress must limit cumulative distributions subsequent to the mergers between Duke Energy and Progress Energy and Duke Energy and Piedmont to (i) the amount of retained earnings on the day prior to the closing of the respective mergers, plus (ii) any future earnings recorded. Duke Energy Ohio Duke Energy Ohio will not declare and pay dividends out of capital or unearned surplus without the prior authorization of the PUCO. Duke Energy Ohio received FERC and PUCO approval to pay dividends from its equity accounts that are reflective of the amount that it would have in its retained earnings account had push-down accounting for the Cinergy merger not been applied to Duke Energy Ohio’s balance sheet. The conditions include a commitment from Duke Energy Ohio that equity, adjusted to remove the impacts of push-down accounting, will not fall below 30% of total capital. Duke Energy Kentucky is required to pay dividends solely out of retained earnings and to maintain a minimum of 35% equity in its capital structure. Duke Energy Indiana Duke Energy Indiana must limit cumulative distributions subsequent to the merger between Duke Energy and Cinergy to (i) the amount of retained earnings on the day prior to the closing of the merger, plus (ii) any future earnings recorded. In addition, Duke Energy Indiana will not declare and pay dividends out of capital or unearned surplus without prior authorization of the IURC. Piedmont Piedmont must limit cumulative distributions subsequent to the acquisition of Piedmont by Duke Energy to (i) the amount of retained earnings on the day prior to the closing of the merger, plus (ii) any future earnings recorded. RATE-RELATED INFORMATION The NCUC, PSCSC, FPSC, IURC, PUCO, TPUC and KPSC approve rates for retail electric and natural gas services within their states. The FERC approves rates for electric sales to wholesale customers served under cost-based rates (excluding Ohio and Indiana), as well as sales of transmission service. For open regulatory matters, unless otherwise noted, the Subsidiary Registrants and Duke Energy Kentucky cannot predict the outcome or ultimate resolution of their respective matters. As discussed further below, the Subsidiary Registrants were impacted by significant storms in 2024: • In August 2024, Hurricane Debby made landfall in Florida as a Category 1 storm, impacting primarily the Duke Energy Florida territory as well as the Duke Energy Carolinas and Duke Energy Progress territories in North Carolina and South Carolina. Approximately 700,000 customers were impacted across Duke Energy's system. • In September 2024, Hurricane Helene made landfall in Florida as a Category 4 storm and subsequently impacted all of Duke Energy's service territories as the storm moved inland, with the most severe damage occurring in the Duke Energy Florida territory and the Duke Energy Carolinas and Duke Energy Progress territories in North Carolina and South Carolina. Approximately 3.5 million customers were impacted across Duke Energy's system. • In October 2024, Hurricane Milton made landfall in Florida as a Category 3 storm, impacting more than 1 million customers in the Duke Energy Florida territory. Each Subsidiary Registrant is responsible for the restoration of service within its respective service territory and the recovery of related storm costs, including financing costs and, as applicable, the replenishment of storm-related reserves. The Subsidiary Registrants are pursuing all available avenues to recover storm-related costs, including insurance recovery and the securitization for certain costs, where applicable. Total estimated costs for storm restoration and rebuilding of infrastructure, including capital expenditures, for hurricanes Debby, Helene and Milton, net of expected insurance recoveries, are estimated to be approximately $2.8 billion, of which approximately $2.6 billion had been incurred as of December 31, 2024, with $0.2 billion estimated to be incurred for rebuilding in 2025. The following shows the total cost estimates for the registrants that were primarily impacted: (in millions) Cost Estimate (a) Duke Energy Carolinas $ 1,150 Duke Energy Progress 450 Duke Energy Florida 1,150 (a) These estimates could change as the rebuilding of infrastructure is finalized. Duke Energy Florida was the only jurisdiction materially impacted by Hurricane Milton. Duke Energy Carolinas and Duke Energy Progress Hurricanes Ian, Debby and Helene In 2022, Hurricane Ian inflicted severe damage to the Duke Energy Carolinas and Duke Energy Prog ress territories in North Carolina and South Carolina. Total operation and maintenance expenses incurred for restoration efforts were approximately $95 million, with an additional $8 million in capital investments. Approximately $87 million of the operation and maintenance expenses were deferred in Regulatory assets within Other Noncurrent Assets on the Consolidated Balance Sheets as of December 31, 2023 ($32 million and $55 million for Duke Energy Carolinas and Duke Energy Progress, respectively). As of December 31, 2024, $34 million for Duke Energy Carolinas and $47 million for Duke Energy Progress were deferred in Regulatory assets within Other Noncurrent Assets on the Consolidated Balance Sheets. In 2024, Hurricanes Debby and Helene significantly impacted the Duke Energy Carolinas and Duke Energy Progress territories in North Carolina and South Carolina. As of December 31, 2024, total operation and maintenance expenses incurred for restoration and rebuilding of infrastructure, were approximately $860 million ($612 million and $248 million for Duke Energy Carolinas and Duke Energy Progress, respectively), with an additional $548 million in capital investments ($402 million and $146 million for Duke Energy Carolinas and Duke Energy Progress, respectively). Approximately $802 million of the operation and maintenance expenses are deferred in Regulatory assets within Other Noncurrent Assets on the Consolidated Balance Sheets as of December 31, 2024 ($583 million and $219 million for Duke Energy Carolinas and Duke Energy Progress, respectively). These a mounts are net of expected insurance recoveries and could change going forward as the rebuilding of infrastructure is finalized. Duke Energy Carolinas and Duke Energy Progress have regulatory tools to recover storm costs including deferral and securitization. In December 2024, Duke Energy Carolinas and Duke Energy Progress filed their joint petition for review and approval of storm recovery costs (Phase 1) with the NCUC to securitize the North Carolina-retail allocable share of storm costs associated with Hurricanes Helene, Debby and Ian, as well as Hurricane Zeta and Winter Storm Izzy, and the establishment of storm reserves for $200 million at Duke Energy Carolinas and $100 million at Duke Energy Progress. On February 3, 2025, Duke Energy Carolinas and Duke Energy Progress filed their joint petition for financing orders (Phase 2). In February 2025, Duke Energy Carolinas and Duke Energy Progress reached a settlement agreement with the North Carolina Public Staff and other intervening parties that resolves all issues between the parties in the Phase 1 proceeding and removes the establishment of storm reserves from the securitization proceeding. Further, the settlement outlines agreement on certain issues in the Phase 2 proceeding. The evidentiary hearing was held on February 13, 2025. Orders from the NCUC are expected by April 2025 in the Phase 1 proceeding and by June 2025 in the Phase 2 proceeding. Subject to NCUC approvals, Duke Energy Carolinas and Duke Energy Progress expect to securitize the North Carolina-retail allocable share of storm costs by the end of 2025. On February 17, 2025, Duke Energy Carolinas and Duke Energy Progress filed with the PSCSC notice of intent to file a Joint Petition for Financing Orders no earlier than 30 days from the date of the notice, seeking authority to recover the South Carolina-retail allocable share of storm costs associated with Hurricane Helene through securitization. Such petition is contingent upon the resolution of South Carolina legislative provisions relevant to storm recovery financing. Nuclear Station Subsequent License Renewal On June 7, 2021, Duke Energy Carolinas filed a subsequent license renewal (SLR) application for the Oconee Nuclear Station (ONS) with the U.S. Nuclear Regulatory Commission (NRC) to renew ONS’s operating license for an additional 20 years. The SLR would extend operations of the facility from 60 to 80 years. The current licenses for units 1 and 2 expire in 2033 and the license for unit 3 expires in 2034. In December 2022, the NRC issued the Safety Evaluation Report (SER) for the safety portion of the SLR application. The NRC determined Duke Energy Carolinas met the requirements of the applicable regulations and identified actions that have been taken or will be taken to manage the effects of aging and address time-limited analyses. In February 2023, the Advisory Committee on Reactor Safeguards issued a report to the NRC on the safety aspects of the Oconee SLR application, which concluded that the established programs and commitments made by Duke Energy Carolinas to manage age-related degradation provide confidence that Oconee can be operated in accordance with its current licensing basis for the subsequent period of extended operation without undue risk to the health and safety of the public and the SLR application for Oconee should be approved. In December 2022, the NRC published a notice in the Federal Register that the NRC would conduct a limited scoping process to gather additional information necessary to prepare an environmental impact statement (EIS) to evaluate the environmental impacts at Oconee during the SLR period. The NRC received comments from the Sierra Club and Beyond Nuclear (Petitioners) and the EPA identifying 18 potential impacts that should be considered by the NRC in the EIS, including climate change and flooding, environmental justice, severe accidents and external events. In February 2024, the NRC issued the Oconee site-specific draft EIS. In April 2024, the Pe titioners filed a Hearing Request, which proposed three contentions and in June 2024, the Atomic Safety and Licensing Board (ASLB) convened a pre-hearing conference. On January 17, 2025, the ASLB issued a decision on contention admissibility denying the Petitioners' hearing request. In January 2025, the NRC issued the final EIS and on February 17, 2025, the EPA issued a Notice of Availability for the final EIS. A decision on the SLR for ONS is anticipated from the NRC in the first half of 2025. Duke Energy Carolinas and Duke Energy Progress intend to seek renewal of operating licenses and 20-year license extensions for all of their nuclear stations. Duke Energy Carolinas Regulatory Assets and Liabilities The following tables present the regulatory assets and liabilities recorded on Duke Energy Carolinas' Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) AROs – coal ash $ 1,481 $ 1,559 (g) (b) Storm cost deferrals 691 97 Yes (b) Accrued pension and OPEB 668 671 (h) Deferred fuel and purchased power 298 1,293 (e) 2026 Deferred asset – Lee COLA 205 237 (b) Hedge costs deferrals 202 405 (b) Storm cost securitized balance, net 201 208 Yes 2041 Grid Deferral (c) 201 159 Yes (b) Incremental COVID-19 expenses 137 152 Yes (b) AMI (c) 114 125 Yes (b) Vacation accrual 86 87 2025 Nuclear deferral 81 89 2026 COR settlement (c) 81 85 Yes (b) Coal plant securitization 63 — Yes (b) Deferred coal ash handling system costs (c) 60 65 Yes (b) Customer connect project (c) 54 58 Yes (b) Retired generation facilities (c) 54 26 Yes (b) PISCC and deferred operating expenses 42 48 Yes (b) Decoupling 24 — Yes (b) Other 141 116 (b) Total regulatory assets 4,884 5,480 Less: Current portion 685 1,564 Total noncurrent regulatory assets $ 4,199 $ 3,916 Regulatory Liabilities (a) AROs – nuclear and other $ 2,289 1,673 (b) Net regulatory liability related to income taxes (d) 1,951 $ 2,200 Yes (b) COR regulatory liability (c) 1,479 1,641 Yes (f) Deferred Nuclear PTC 581 — Yes 2030 Hedge cost deferrals 199 158 (b) Deferred fuel and purchased power 108 85 (e) 2026 Renewable energy credits 102 99 Yes (b) DSM / EE (c) 53 87 Yes (i) Accrued pension and OPEB 35 106 (h) Other 413 528 (b) Total regulatory liabilities 7,210 6,577 Less: Current portion 618 587 Total noncurrent regulatory liabilities $ 6,592 $ 5,990 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base. (e) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina. (f) Recovered over the life of the associated assets. (g) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (h) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. (i) Includes incentives on DSM/EE investments and is recovered or refunded through an annual rider mechanism. 2023 North Carolina Rate Case In January 2023, Duke Energy Carolinas filed a PBR application with the NCUC to request an increase in base rate retail revenues. The PBR application included an MYRP to recover projected capital investments during the three-year MYRP period. In addition to the MYRP, the PBR application included an Earnings Sharing Mechanism, Residential Decoupling Mechanism and Performance Incentive Mechanisms (PIMS) as required by HB 951. In August 2023, Duke Energy Carolinas filed with the NCUC a partial settlement with the Public Staff in connection with its PBR application. The partial settlement included, among other things, a greement on a substantial portion of the North Carolina retail rate base for the historic base case of approximately $19.5 billion and all of the capital projects and related costs to be included in the three-year MYRP, including $4.6 billion (North Carolina retail allocation) projected to go in service over the MYRP period. Additionally, the partial settlement included agreement, with certain adjustments, on depreciation rates, the recovery of grid improvement plan costs and PIMs, Tracking Metrics and the Residential Decoupling Mechanism under t he PBR application. On August 28, 2023, Duke Energy Carolinas filed with the NCUC a second partial settlement with the Public Staff resolving additional issues, including the future treatment of nuclear production tax credits related to the IRA, through a stand-alone rider that would provide the benefits to customers. This stand-alone rider was effective in rates beginning January 1, 2025. On December 1 5, 2023, the NCUC issued an order approving Duke Energy Carolinas' PBR application, as modified by the partial settlements and the order, including an overall retail revenue increase of $436 million in Year 1, $174 million in Year 2 and $158 million in Year 3, for a combined total of $768 million. T he order established an ROE of 10.1% based upon an equity ratio of 53% and approved, with certain adjustments, depreciation rates and the recovery of grid improvement plan costs and certain deferred COV ID-related costs. Additionally, the Residential Decoupling Mechanism and PIMs were approved as requested under the PBR application and revised by the partial settlements. As a result of the partial settlements and the order, Duke Energy Carolinas recognized pretax charges of $29 million within Impairment of assets and other charges, and $8 million within Operations, maintenance and other, for the year ended December 31, 2023, on the Consolidated Statements of Operations. Duke Energy Carolinas implemented interim rates on September 1, 2023. New revised Year 1 rates and the residential decoupling were implemented on January 15, 2024. In February 2024, a number of parties filed Notices of Appeal of the December 15, 2023 NCUC order. Notices of Appeal were filed by the Carolina Industrial Group for Fair Utility Rates (CIGFUR) III, a collection of various electric membership corporations (collectively, the EMCs), and the North Carolina Attorney General’s Office (the AGO). CIGFUR III and the EMCs appealed the interclass subsidy reduction percentage and the Transmission Cost Allocation stipulation. In addition, CIGFUR III appealed the NCUC’s elimination of the equal percentage fuel cost allocation methodology. The AGO appealed several issues including the authorized ROE and certain rate design and accounting matters. On March 1, 2024, Carolina Utility Customers Association, Inc. appealed several issues, including the authorized ROE and certain rate design and accounting matters. In July 2024, the Supreme Court of North Carolina c onsolidated the appeal with the parallel appeal of the NCUC's order regarding the Duke Energy Progress PBR application. Briefing is complete and oral argument occurred on February 13, 2025. Duke Energy Carolinas anticipates a decision to be issued no later than the fourth quarter of 2025. 2024 South Carolina Rate Case In January 2024, Duke Energy Carolinas filed a rate case with the PSCSC to request an increase in base rate retail revenues. In May 2024, Duke Energy Carolinas and the Office of Regulatory Staff, as well as other consumer, environmental, and industrial intervening parties, filed an Agreement and Stipulation of Settlement reso lving all issues in the base rate proceeding. The major components of the settlement include a $240 million annual customer rate increase, prior to a reduction from the accelerated return to customers of federal unprotected Property, Plant and Equipment related EDIT of $84 million annually over the first two years. The stipulation includes an ROE of 9.94% with an equity ratio of 51.21% and resolves recovery of the Company's continued investments in the grid, its new corporate headquarters and environmental compliance costs. The PSCSC held a hearing in May 2024, to consider evidence supporting the stipulation. On July 3, 2024, the PSCSC issued its final order approving an increase in base rates and approving nearly all components of the Agreement and Stipulation of Settlement. The order revised recovery of certain environmental compliance costs, the only provision of the settlement agreement not fully approved by the PSCSC. As a result, Duke Energy Carolinas recognized pretax charges of $33 million within Impairment of assets and other charges, $2 million within Operations, maintenance and other, partially offset by an $11 million reduction in Interest expense, for the year ended Decem ber 31, 2024 , on the Consolidated Statements of Operations. Based upon the order, after accelerating the EDIT giveback to customers, the net rate increase is $150 million annually for the first two years. Revised customer rat es were effective August 1, 2024, an d are based upon a South Carolina retail rate base of $7.4 billion. Marshall Combustion Turbines CPCN In March 2024, Duke Energy Carolinas filed with the NCUC an application to construct and operate two hydrogen-capable advanced-class simple-cycle CTs at the site of the existing Marshall Steam Station. The two new CTs – totaling approximately 850 MW – will enable the retirement of Marshall coal units 1 and 2 and provid

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES INSURANCE General Insurance The Duke Energy Registrants have insurance and reinsurance coverage either directly or through indemnification from Duke Energy’s captive insurance company, Bison, and its affiliates, consistent with companies engaged in similar commercial operations with similar type properties. The Duke Energy Registrants’ coverage includes (i) commercial general liability coverage for liabilities arising to third parties for bodily injury and property damage; (ii) workers’ compensation; (iii) automobile liability coverage; and (iv) property coverage for all real and personal property damage. Real and personal property damage coverage excludes electric transmission and distribution lines, but includes damages arising from boiler and machinery breakdowns, earthquakes, flood damage and extra expense, but not outage or replacement power coverage. All coverage is subject to certain deductibles or retentions, sublimits, exclusions, terms and conditions common for companies with similar types of operations. The Duke Energy Registrants self-insure their electric transmission and distribution lines against loss due to storm damage and other natural disasters. As discussed further in Note 4, Duke Energy Florida maintains a storm damage reserve and has a regulatory mechanism to recover the cost of named storms on an expedited basis. The cost of the Duke Energy Registrants’ coverage can fluctuate from year to year reflecting claims history and conditions of the insurance and reinsurance markets. In the event of a loss, terms and amounts of insurance and reinsurance available might not be adequate to cover claims and other expenses incurred. Uninsured losses and other expenses, to the extent not recovered by other sources, could have a material effect on the Duke Energy Registrants’ results of operations, cash flows or financial position. Each company is responsible to the extent losses may be excluded or exceed limits of the coverage available. Nuclear Insurance Duke Energy Carolinas owns and operates McGuire and Oconee and operates and has a partial ownership interest in Catawba. McGuire and Catawba each have two reactors. Oconee has three reactors. The other joint owners of Catawba reimburse Duke Energy Carolinas for certain expenses associated with nuclear insurance per the Catawba joint owner agreements. Duke Energy Progress owns and operates Robinson, Brunswick and Harris. Robinson and Harris each have one reactor. Brunswick has two reactors. Duke Energy Florida owns Crystal River Unit 3, which permanently ceased operation in 2013 and achieved a SAFSTOR condition in July 2019. On October 1, 2020, Crystal River Unit 3 changed decommissioning strategies from SAFSTOR to DECON. In the event of a loss, terms and amounts of insurance available might not be adequate to cover property damage and other expenses incurred. Uninsured losses and other expenses, to the extent not recovered by other sources, could have a material effect on Duke Energy Carolinas’, Duke Energy Progress’ and Duke Energy Florida’s results of operations, cash flows or financial position. Each company is responsible to the extent losses may be excluded or exceed limits of the coverage available. Nuclear Liability Coverage The Price-Anderson Act requires owners of nuclear reactors to provide for public nuclear liability protection per nuclear incident up to a maximum total financial protection liability. The maximum total financial protection liability, which is approximately $16.2 billion, is subject to change every five years for inflation and for the number of licensed reactors. Total nuclear liability coverage consists of a combination of private primary nuclear liability insurance coverage and a mandatory industry risk-sharing program to provide for excess nuclear liability coverage above the maximum reasonably available private primary coverage. The U.S. Congress could impose revenue-raising measures on the nuclear industry to pay claims. Primary Liability Insurance Duke Energy Carolinas and Duke Energy Progress have purchased the maximum reasonably available private primary nuclear liability insurance as required by law, which is $500 million per station. Duke Energy Florida has purchased $100 million primary nuclear liability insurance for Crystal River in compliance with the law. Excess Liability Program This program provides $15.8 billion of coverage per incident through the Price-Anderson Act’s mandatory industrywide excess secondary financial protection program of risk pooling. This amount is the product of potential cumulative retrospective premium assessments of $166 million times the current 95 licensed commercial nuclear reactors in the U.S. Under this program, operating unit licensees could be assessed retrospective premiums to compensate for public nuclear liability damages in the event of a nuclear incident at any licensed facility in the U.S. Retrospective premiums may be assessed at a rate not to exceed $24.7 million per year per licensed reactor for each incident. The assessment may be subject to state premium taxes. Nuclear Property and Accidental Outage Coverage Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are members of Nuclear Electric Insurance Limited (NEIL), an industry mutual insurance company, which provides property damage, nuclear accident decontamination and premature decommissioning insurance for each station for losses resulting from damage to its nuclear plants, either due to accidents or acts of terrorism. Additionally, NEIL provides accidental outage coverage for losses in the event of a major accidental outage at an insured nuclear station. Pursuant to regulations of the NRC, each company’s property damage insurance policies provide that all proceeds from such insurance be applied, first, to place the plant in a safe and stable condition after a qualifying accident and second, to decontaminate the plant before any proceeds can be used for decommissioning, plant repair or restoration. Losses resulting from acts of terrorism are covered as common occurrences, such that if terrorist acts occur against one or more commercial nuclear power plants insured by NEIL within a 12-month period, they would be treated as one event and the owners of the plants where the act occurred would share one full limit of liability. The full limit of liability is currently $3.2 billion. NEIL sublimits the total aggregate for all of their policies for non-nuclear terrorist events to approximately $1.8 billion. Each nuclear facility has accident property damage, nuclear accident decontamination and premature decommissioning liability insurance from NEIL with limits of $1.5 billion, except for Crystal River Unit 3. Crystal River Unit 3’s limit is $50 million and is on an actual cash value basis. All nuclear facilities except for Catawba and Crystal River Unit 3 also share an additional $1.25 billion nuclear accident insurance limit above their dedicated underlying limit. This shared additional excess limit is not subject to reinstatement in the event of a loss. Catawba has a dedicated $1.25 billion of additional nuclear accident insurance limit above its dedicated underlying limit. Catawba and Oconee also have an additional $750 million of non-nuclear accident property damage limit. All coverages are subject to sublimits and significant deductibles. NEIL’s Accidental Outage policy provides some coverage, similar to business interruption, for losses in the event of a major accident property damage outage of a nuclear unit. Coverage is provided on a weekly limit basis after a significant waiting period deductible and at 100% of the applicable weekly limits for 52 weeks and 80% of the applicable weekly limits for up to the next 110 weeks. Coverage is provided until these applicable weekly periods are met, where the accidental outage policy limit will not exceed $490 million for each nuclear plant. NEIL sublimits the accidental outage recovery up to the first 104 weeks of coverage not to exceed $291 million from non-nuclear accidental property damage. Coverage amounts decrease in the event more than one unit at a station is out of service due to a common accident. All coverages are subject to sublimits and significant deductibles. Potential Retroactive Premium Assessments In the event of NEIL losses, NEIL’s board of directors may assess member companies' retroactive premiums of amounts up to 10 times their annual premiums for up to six years after a loss. NEIL has never exercised this assessment. The maximum aggregate current year policies' annual retrospective premium obligations for Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are $162 million, $99 million and $1 million, respectively. Duke Energy Carolinas' maximum assessment amount includes 100% of potential obligations to NEIL for jointly owned reactors. Duke Energy Carolinas would seek reimbursement from the joint owners for their portion of these assessment amounts. ENVIRONMENTAL The Duke Energy Registrants are subject to federal, state and local regulations regarding air and water quality, hazardous and solid waste disposal, coal ash and other environmental matters. These regulations can be changed from time to time, imposing new obligations on the Duke Energy Registrants. The following environmental matters impact all of the Duke Energy Registrants. Remediation Activities In addition to AROs recorded as a result of various environmental regulations, discussed in Note 10, the Duke Energy Registrants are responsible for environmental remediation at various sites. These include certain properties that are part of ongoing operations and sites formerly owned or used by Duke Energy entities. These sites are in various stages of investigation, remediation and monitoring. Managed in conjunction with relevant federal, state and local agencies, remediation activities vary based upon site conditions and location, remediation requirements, complexity and sharing of responsibility. If remediation activities involve joint and several liability provisions, strict liability, or cost recovery or contribution actions, the Duke Energy Registrants could potentially be held responsible for environmental impacts caused by other potentially responsible parties and may also benefit from insurance policies or contractual indemnities that cover some or all cleanup costs. Liabilities are recorded when losses become probable and are reasonably estimable. The total costs that may be incurred cannot be estimated because the extent of environmental impact, allocation among potentially responsible parties, remediation alternatives and/or regulatory decisions have not yet been determined at all sites. Additional costs associated with remediation activities are likely to be incurred in the future and could be significant. Costs are typically expensed as Operation, maintenance and other in the Consolidated Statements of Operations unless regulatory recovery of the costs is deemed probable. The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Accounts Payable within Other Current Liabilities and Other within Other Noncurrent Liabilities (in millions) December 31, 2024 December 31, 2023 Reserves for Environmental Remediation Duke Energy $ 73 $ 88 Duke Energy Carolinas 24 23 Progress Energy 19 19 Duke Energy Progress 9 9 Duke Energy Florida 10 10 Duke Energy Ohio 21 36 Duke Energy Indiana 2 2 Piedmont 7 7 Additional losses in excess of recorded reserves that could be incurred for the stages of investigation, remediation and monitoring for environmental sites that have been evaluated at this time are not material. LITIGATION For open litigation, unless otherwise noted, Duke Energy and the Subsidiary Registrants cannot predict the outcome or ultimate resolution of their respective matters. Duke Energy Texas Storm Uri Tort Litigation Duke Energy (Parent), 21. These lawsuits sought recovery for property damage, personal injury and wrongful death allegedly caused by the power outages that plaintiffs claim were the collective failure of generators including entities owned by Duke Energy at the time, transmission and distribution operators (TDUs), retail energy providers, and all others, including ERCOT. The cases were consolidated into a Texas state court multidistrict litigation (MDL) proceeding for discovery and pre-trial motions. Five MDL cases were designated as lead cases in which motions to dismiss were filed and all other cases were stayed. In the cases against the generators, the plaintiffs dismissed the claims against Duke Energy (Parent ). I n October 2023, in conjunction with the closing of the sale of the utility-scale solar and wind group, all but one of the project company lawsuits transferred to Brookfield. In May 2024, the remaining project company claim in the lawsuit was transferred to the buyer in connection with the sale of a portion of the remaining Commercial Renewables assets. With the transfer of the remaining project company lawsuits now complete, the matter is closed as it relates to the Duke Energy Registrants. See Note 2 for more information related to the sale of the Commercial Renewables Disposal Groups. Mooresville Coal Ash Class Action Litigation On December 20, 2024, 15 plaintiffs filed a lawsuit in Iredell County, North Carolina, against Duke Energy (Parent), Duke Energy Carolinas and Duke Energy Progress (collectively “Duke Energy”) on behalf of a putative class alleging past and ongoing environmental contamination in the Mooresville area of North Carolina. The lawsuit alleges that Duke Energy disposed of and sold coal ash as structural fill resulting in the contamination of soil, groundwater and Lake Norman. Plaintiffs claim that Duke Energy failed to properly remediate the contamination and continues to pollute, and they assert that the contamination has negatively impacted property values and led to elevated cancer rates and other health issues. The complaint asserts claims for negligence, nuisance, violations of the North Carolina Unfair and Deceptive Trade Practices Act, strict liability for ultra-hazardous activities and trespass. Plaintiffs are seeking unspecified compensatory and punitive damages, injunctive relief to stop further contamination, remediation of contaminated areas and attorneys' fees and costs. The Company is evaluating the complaint and will respond by the court's deadline in March 2025. Duke Energy Carolinas NTE Carolinas II, LLC Litigation In November 2017, Duke Energy Carolinas entered into a standard FERC large generator interconnection agreement (LGIA) with NTE Carolinas II, LLC (NTE), a company that proposed to build a combined-cycle natural gas plant in Rockingham County, North Carolina. In September 2019, Duke Energy Carolinas filed a lawsuit in Mecklenburg County Superior Court against NTE for breach of contract, alleging that NTE's failure to pay benchmark payments for Duke Energy Carolinas' transmission system upgrades required under the interconnection agreement constituted a termination of the interconnection agreement. Duke Energy Carolinas sought a monetary judgment against NTE because NTE failed to make multiple milestone payments. The lawsuit was moved to federal court in North Carolina. NTE filed a motion to dismiss Duke Energy Carolinas’ complaint and brought counterclaims alleging anti-competitive conduct and violations of state and federal statutes. Duke Energy Carolinas filed a motion to dismiss NTE's counterclaims. Both NTE's and Duke Energy Carolinas' motions to dismiss were subsequently denied by the court. On May 21, 2020, in response to a NTE petition challenging Duke Energy Carolinas' termination of the LGIA, FERC issued a ruling that 1) it has exclusive jurisdiction to determine whether a transmission provider may terminate an LGIA; 2) FERC approval is required to terminate a conforming LGIA if objected to by the interconnection customer; and 3) Duke Energy may not announce the termination of a conforming LGIA unless FERC has approved the termination. FERC's Office of Enforcement also initiated an investigation of Duke Energy Carolinas into matters pertaining to the LGIA. In April 2023, Duke Energy Carolinas received notice from the FERC Office of Enforcement that they have closed their non-public investigation with no further action recommended. Following completion of discovery, Duke Energy Carolinas filed a motion for summary judgment seeking a ruling in its favor as to some of its affirmative claims against NTE and to all of NTE’s counterclaims. On June 24, 2022, the court issued an order partially granting Duke Energy Carolinas' motion by dismissing NTE's counterclaims that Duke Energy Carolinas engaged in anti-competitive behavior in violation of state and federal statutes. In October 2022, the parties executed a settlement agreement with respect to the remaining breach of contract claims in the litigation and a Stipulation of Dismissal was filed with the court. In November 2022, NTE filed its Notice of Appeal to the U.S. Court of Appeals for the Fourth Circuit as to the district court's summary judgment ruling in Duke Energy Carolinas' favor on NTE's antitrust and unfair competition claims. Briefing on NTE's appeal was completed in June 2023 and oral argument took place in May 2024. On August 5, 2024, the U.S. Court of Appeals for the Fourth Circuit reversed the district court's grant of summary judgment and remanded the case back to the district court for further proceedings. In August 2024, Duke Energy Carolinas filed a petition for rehe aring, which was denied on November 26 , 2024. On February 21, 2025, Duke Energy Carolinas filed a petition seeking review by the United States Supreme Court. Asbestos-related Injuries and Damages Claims Duke Energy Carolinas has experienced numerous claims for indemnification and medical cost reimbursement related to asbestos exposure. These claims relate to damages for bodily injuries alleged to have arisen from exposure to or use of asbestos in connection with construction and maintenance activities conducted on its electric generation plants prior to 1985. Duke Energy Carolinas has recognized asbestos-related reserv es of $396 million and $423 million at December 31, 2024, and 2023, respectively. These reserves are classified in Other within Other Noncurrent Liabilities and Other within Current Liabilities on the Consolidated Balance Sheets. These reserves are based upon Duke Energy Carolinas' best estimate for current and future asbestos claims through 2044 and are recorded on an undiscounted basis. In light of the uncertainties inherent in a longer-term forecast, management does not believe they can reasonably estimate the indemnity and medical costs that might be incurred after 2044 related to such potential claims. It is possible Duke Energy Carolinas may incur asbestos liabilities in excess of the recorded reserves. Duke Energy Carolinas has third-party insurance to cover certain losses related to asbestos-related injuries and damages above an aggregate self-insured retention. Receivables for insurance recoveries were $539 million and $572 million at December 31, 2024, and 2023, respectively. These amounts are classified in Other within Other Noncurrent Assets and Receivables within Current Assets on the Consolidated Balance Sheets. Any future payments up to the policy limit will be reimbursed by the third-party insurance carrier. Duke Energy Carolinas is not aware of any uncertainties regarding the legal sufficiency of insurance claims. Duke Energy Carolinas believes the insurance recovery asset is probable of recovery as the insurance carrier continues to have a strong financial strength rating. The reserve for credit losses for insurance receivables for the asbestos-related injuries and dama ges is $9 million as of December 31, 2024, and December 31, 2023, for both Duke Energy and Duke Energy Carolinas. The insurance receivable is eva luated based on the risk of default and the historical losses, current conditions and expected conditions around collectability. Management evaluates the risk of default annually based on payment history, credit rating and changes in the risk of default from credit agencies. Duke Energy Indiana Coal Ash Insurance Coverage Litigation In June 2022, Duke Energy Indiana filed a civil action in Indiana Superior Court against various insurance companies seeking declaratory relief with respect to insurance coverage for CCR-related expenses and liabilities covered by third-party liability insurance policies. The insurance policies cover the 1969-1972 and 1984-1985 periods and provide third-party liability insurance for claims and suits alleging property damage, bodily injury and personal injury (or a combination thereof). A trial date has not yet been set. In June 2023, Duke Energy Indiana and Associated Electric and Gas Insurance Services (AEGIS) reached a confidential settlement, the results of which were not material to Duke Energy, and as a result, AEGIS was dismissed from the litigation in July 2023. Duke Energy In diana has also reached confidential settlements with other various insurance companies, the results of which were not material. In June 2024, Duke Energy Indiana filed an amended complaint adding several additional insurance companies as defendants to the litigati on. The litigation is currently stayed until February 28, 2025, while Duke Energy continues to negotiate with the remaining insurance company defendants. Other Litigation and Legal Proceedings The Duke Energy Registrants are involved in other legal, tax and regulatory proceedings arising in the ordinary course of business, some of which involve significant amounts. The Duke Energy Registrants believe the final disposition of these proceedings will not have a material effect on their results of operations, cash flows or financial position. Reserves are classified on the Consolidated Balance Sheets in Other within Other Noncurrent Liabilities and Other within Current Liabilities. OTHER COMMITMENTS AND CONTINGENCIES General As part of their normal business, the Duke Energy Registrants are party to various financial guarantees, performance guarantees and other contractual commitments to extend guarantees of credit and other assistance to various subsidiaries, investees and other third parties. These guarantees involve elements of performance and credit risk, which are not fully recognized on the Consolidated Balance Sheets and have uncapped maximum potential payments. However, the Duke Energy Registrants do not believe these guarantees will have a material effect on their results of operations, cash flows or financial position. See Notes 2 and 8 for more information. Purchase Obligations Purchased Power Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana have ongoing purchased power contracts with other utilities, wholesale marketers, co-generators and qualified facilities. These purchased power contracts generally provide for capacity and energy payments. In addition, Duke Energy Progress and Duke Energy Florida have various contracts to secure transmission rights. The following table presents executory purchased power contracts with terms exceeding one year, excluding contracts classified as leases. Minimum Purchase Amount at December 31, 2024 Contract (in millions) Expiration 2025 2026 2027 2028 2029 Thereafter Total Duke Energy Progress (a) 2028-2042 $ 22 $ 18 $ 19 $ 18 $ 3 $ 31 $ 111 Duke Energy Indiana (b) 2026 33 12 — — — — 45 (a) Contracts represent between 18% and 100% of net plant output. (b) Share of net plant output varies. Gas Supply and Capacity Contracts Duke Energy Ohio and Piedmont routinely enter into long-term natural gas supply commodity and capacity commitments and other agreements that commit future cash flows to acquire services needed in their businesses. These commitments include pipeline and storage capacity contracts and natural gas supply contracts to provide service to customers. Costs arising from the natural gas supply commodity and capacity commitments, while significant, are pass-through costs to customers and are generally fully recoverable through specific fuel rate components operating in conjunction with PGA pro cedures, and subject to periodic prudence reviews in North Carolina and South Carolina and the Performance Incentive Plan in Tennessee. In the Midwest, these costs are recovered via the Gas Cost Recovery Rate in Ohio or the Gas Cost Adjustment Clause in Kentucky. The time periods for fixed payments under pipeline and storage capacity contracts are up to 18 years. The time periods for fixed payments under natural gas supply contracts is up to three years. The time periods for the natural gas supply purchase commitments is up to six years. Certai n storage and pipeline capacity contracts require the payment of demand charges that are based on rates approved by the FERC in order to maintain rights to access the natural gas storage or pipeline capacity on a firm basis during the contract term. The demand charges that are incurred in each period are recognized in the Consolidated Statements of Operations and Comprehensive Income as part of natural gas purchases and are included in Cost of natural gas. The following table presents future unconditional purchase obligations under natural gas supply and capacity contracts as of December 31, 2024. (in millions) 2025 2026 2027 2028 2029 Thereafter Total Duke Energy Ohio $ 104 $ 75 $ 71 $ 69 $ 65 $ 554 $ 938 Piedmont 369 366 322 241 233 695 2,226

Leases

Leases	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Leases	LEASES As part of its operations, Duke Energy leases certain aircraft, space on communication towers, industrial equipment, fleet vehicles, fuel transportation (barges and railcars), land and office space under various terms and expiration dates. Additionally, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Indiana have finance leases related to firm natural gas pipeline transportation capacity. Duke Energy Progress and Duke Energy Florida have entered into certain PPAs, which are classified as finance and operating leases. Duke Energy has certain lease agreements, which include variable lease payments that are based on the usage of an asset. These variable lease payments are not included in the measurement of the ROU assets or operating lease liabilities on the Consolidated Financial Statements. Certain Duke Energy lease agreements include options for renewal and early termination. The intent to renew a lease varies depending on the lease type and asset. Renewal options that are reasonably certain to be exercised are included in the lease measurements. The decision to terminate a lease early is dependent on various economic factors. No termination options have been included in any of the lease measurements. In December 2019, Duke Energy Carolinas entered into a sale-leaseback arrangement to construct and occupy an office tower. The lease agreement was evaluated as a sale-leaseback of real estate but did not qualify for sale-leaseback accounting. As a result, the transaction is accounted for as a financing. Duke Energy Carolinas recorded the real estate on the Consolidated Balance Sheets within Property, Plant and Equipment as if it is the legal owner and recognizes depreciation expense over the estimated useful life. In addition, the failed sale-leaseback obligation is reported within Long-Term Debt on the Consolidated Balance Sheets with the monthly lease payments split between interest expense and debt principal. Piedmont has certain agreements for the construction and transportation of natural gas pipelines to supply Duke Energy Carolinas' natural gas plant needs. Piedmont accounts for these pipeline lateral contracts as sales-type leases since the present value of the sum of the lease payments equals the fair value of the assets. These pipeline lateral assets owned by Piedmont had a current net investment basis of $2 million as of December 31, 2024, and 2023, and a long-term net investment basis of $197 million and $199 million as of December 31, 2024, and 2023, respectively. These assets are classified in Other, within Current Assets and Other Noncurrent Assets, respectively, on Piedmont's Consolidated Balance Sheets. Duke Energy Carolinas accounts for the contracts as finance leases. The activity for these contracts is eliminated in consolidation at Duke Energy. The following tables present the components of lease expense. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Operating lease expense (a) $ 275 $ 66 $ 173 $ 82 $ 91 $ 12 $ 23 $ 2 Short-term lease expense (a) 7 — 3 1 2 — 1 — Variable lease expense (a) 33 2 29 19 10 — 1 1 Finance lease expense Amortization of leased assets (b) 113 7 46 38 8 — — — Interest on lease liabilities (c) 41 31 44 41 3 — 1 — Total finance lease expense 154 38 90 79 11 — 1 — Total lease expense $ 469 $ 106 $ 295 $ 181 $ 114 $ 12 $ 26 $ 3 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Operating lease expense (a) $ 236 $ 41 $ 157 $ 80 $ 77 $ 11 $ 17 $ 2 Short-term lease expense (a) 5 — 2 1 1 — 1 — Variable lease expense (a) 27 2 22 11 11 — — 1 Finance lease expense Amortization of leased assets (b) 160 7 57 35 22 — — — Interest on lease liabilities (c) 46 31 45 43 2 — 1 — Total finance lease expense 206 38 102 78 24 — 1 — Total lease expense $ 474 $ 81 $ 283 $ 170 $ 113 $ 11 $ 19 $ 3 (a) Included in Operations, maintenance and other, except for expense related to barges and railcars which is included in Fuel used in electric generation and purchased power on the Consolidated Statements of Operations. (b) Included in Depreciation and amortization on the Consolidated Statements of Operations. (c) Included in Interest Expense on the Consolidated Statements of Operations. The following table presents operating lease maturities and a reconciliation of the undiscounted cash flows to operating lease liabilities. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont 2025 $ 256 $ 24 $ 121 $ 55 $ 66 $ 1 $ 7 $ 5 2026 241 21 124 59 65 1 7 1 2027 191 14 97 60 37 1 5 1 2028 153 11 82 59 23 1 3 1 2029 120 10 74 52 22 1 3 — Thereafter 458 53 307 156 151 4 24 — Total operating lease payments 1,419 133 805 441 364 9 49 8 Less: Present value discount (254) (26) (151) (67) (84) (2) (10) — Total operating lease liabilities (a) $ 1,165 $ 107 $ 654 $ 374 $ 280 $ 7 $ 39 $ 8 (a) Certain operating lease payments include renewal options that are reasonably certain to be exercised. The following table presents finance lease maturities and a reconciliation of the undiscounted cash flows to finance lease liabilities. December 31, 2024 Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Indiana 2025 $ 86 $ 38 $ 91 $ 80 $ 11 $ 1 2026 87 38 92 81 11 1 2027 82 38 89 81 8 1 2028 79 38 87 81 6 1 2029 79 38 88 81 7 1 Thereafter 489 351 444 393 51 21 Total finance lease payments 902 541 891 797 94 26 Less: Amounts representing interest (332) (271) (310) (282) (28) (16) Total finance lease liabilities $ 570 $ 270 $ 581 $ 515 $ 66 $ 10 The following tables contain additional information related to leases. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Classification Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Assets Operating Operating lease ROU assets, net $ 1,148 $ 98 $ 625 $ 348 $ 277 $ 6 $ 37 $ 4 Finance Net property, plant and equipment 645 252 620 512 108 — 6 — Total lease assets $ 1,793 $ 350 $ 1,245 $ 860 $ 385 $ 6 $ 43 $ 4 Liabilities Current Operating Other current liabilities $ 208 $ 20 $ 97 $ 42 $ 55 $ 1 $ 6 $ 1 Finance Current maturities of long-term debt 46 8 48 41 7 — — — Noncurrent Operating Operating lease liabilities 957 87 557 332 225 6 33 7 Finance Long-Term Debt 524 262 533 474 59 — 10 — Total lease liabilities $ 1,735 $ 377 $ 1,235 $ 889 $ 346 $ 7 $ 49 $ 8 December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Classification Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Assets Operating Operating lease ROU assets, net $ 1,092 $ 78 $ 617 $ 318 $ 299 $ 16 $ 50 $ 4 Finance Net property, plant and equipment 687 268 615 552 63 — 6 — Total lease assets $ 1,779 $ 346 $ 1,232 $ 870 $ 362 $ 16 $ 56 $ 4 Liabilities Current Operating Other current liabilities $ 188 $ 15 $ 94 $ 45 $ 49 $ 1 $ 6 $ — Finance Current maturities of long-term debt 115 8 46 38 8 — — — Noncurrent Operating Operating lease liabilities 917 75 544 293 251 16 46 10 Finance Long-Term Debt 524 269 525 514 11 — 9 — Total lease liabilities $ 1,744 $ 367 $ 1,209 $ 890 $ 319 $ 17 $ 61 $ 10 Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Cash paid for amounts included in the measurement of lease liabilities (a) Operating cash flows from operating leases $ 250 $ 24 $ 122 $ 57 $ 65 $ 1 $ 8 $ 1 Operating cash flows from finance leases 41 31 44 41 3 — 1 — Financing cash flows from finance leases 113 7 46 38 8 — — — Lease assets obtained in exchange for new lease liabilities (non-cash) Operating $ 322 $ 50 $ 43 $ 3 $ 40 $ — $ 7 $ 3 Finance 81 1 55 — 55 — 1 — Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Cash paid for amounts included in the measurement of lease liabilities (a) Operating cash flows from operating leases $ 228 $ 18 $ 123 $ 64 $ 59 $ 2 $ 7 $ — Operating cash flows from finance leases 46 31 45 43 2 — 1 — Financing cash flows from finance leases 160 7 57 35 22 — — — Lease assets obtained in exchange for new lease liabilities (non-cash) Operating $ 286 $ 14 $ 92 $ 1 $ 91 $ 2 $ 6 $ 2 Finance 36 — — — — — — — (a) No amounts were classified as investing cash flows from operating leases. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Weighted average remaining lease term (years) Operating leases 8 9 9 8 11 11 11 4 Finance leases 11 15 11 10 15 — 20 — Weighted average discount rate (a) Operating leases 4.3 % 4.3 % 4.0 % 3.9 % 4.2 % 4.1 % 4.0 % 3.9 % Finance leases 8.4 % 11.5 % 8.9 % 9.2 % 5.9 % — % 11.7 % — % December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Weighted average remaining lease term (years) Operating leases 9 10 10 9 11 13 13 4 Finance leases 11 16 11 11 18 — 22 3 Weighted average discount rate (a) Operating leases 3.1 % 4.0 % 3.8 % 3.6 % 4.0 % 4.2 % 3.9 % 2.4 % Finance leases 8.5 % 11.5 % 9.1 % 9.2 % 7.6 % — % 11.9 % 5.4 % (a) The discount rate is calculated using the rate implicit in a lease if it is readily determinable. Generally, the rate used by the lessor is not provided to Duke Energy and in these cases the incremental borrowing rate is used. Duke Energy will typically use its fully collateralized incremental borrowing rate as of the commencement date to calculate and record the lease. The incremental borrowing rate is influenced by the lessee’s credit rating and lease term and as such may differ for individual leases, embedded leases or portfolios of leased assets.
Leases	LEASES As part of its operations, Duke Energy leases certain aircraft, space on communication towers, industrial equipment, fleet vehicles, fuel transportation (barges and railcars), land and office space under various terms and expiration dates. Additionally, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Indiana have finance leases related to firm natural gas pipeline transportation capacity. Duke Energy Progress and Duke Energy Florida have entered into certain PPAs, which are classified as finance and operating leases. Duke Energy has certain lease agreements, which include variable lease payments that are based on the usage of an asset. These variable lease payments are not included in the measurement of the ROU assets or operating lease liabilities on the Consolidated Financial Statements. Certain Duke Energy lease agreements include options for renewal and early termination. The intent to renew a lease varies depending on the lease type and asset. Renewal options that are reasonably certain to be exercised are included in the lease measurements. The decision to terminate a lease early is dependent on various economic factors. No termination options have been included in any of the lease measurements. In December 2019, Duke Energy Carolinas entered into a sale-leaseback arrangement to construct and occupy an office tower. The lease agreement was evaluated as a sale-leaseback of real estate but did not qualify for sale-leaseback accounting. As a result, the transaction is accounted for as a financing. Duke Energy Carolinas recorded the real estate on the Consolidated Balance Sheets within Property, Plant and Equipment as if it is the legal owner and recognizes depreciation expense over the estimated useful life. In addition, the failed sale-leaseback obligation is reported within Long-Term Debt on the Consolidated Balance Sheets with the monthly lease payments split between interest expense and debt principal. Piedmont has certain agreements for the construction and transportation of natural gas pipelines to supply Duke Energy Carolinas' natural gas plant needs. Piedmont accounts for these pipeline lateral contracts as sales-type leases since the present value of the sum of the lease payments equals the fair value of the assets. These pipeline lateral assets owned by Piedmont had a current net investment basis of $2 million as of December 31, 2024, and 2023, and a long-term net investment basis of $197 million and $199 million as of December 31, 2024, and 2023, respectively. These assets are classified in Other, within Current Assets and Other Noncurrent Assets, respectively, on Piedmont's Consolidated Balance Sheets. Duke Energy Carolinas accounts for the contracts as finance leases. The activity for these contracts is eliminated in consolidation at Duke Energy. The following tables present the components of lease expense. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Operating lease expense (a) $ 275 $ 66 $ 173 $ 82 $ 91 $ 12 $ 23 $ 2 Short-term lease expense (a) 7 — 3 1 2 — 1 — Variable lease expense (a) 33 2 29 19 10 — 1 1 Finance lease expense Amortization of leased assets (b) 113 7 46 38 8 — — — Interest on lease liabilities (c) 41 31 44 41 3 — 1 — Total finance lease expense 154 38 90 79 11 — 1 — Total lease expense $ 469 $ 106 $ 295 $ 181 $ 114 $ 12 $ 26 $ 3 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Operating lease expense (a) $ 236 $ 41 $ 157 $ 80 $ 77 $ 11 $ 17 $ 2 Short-term lease expense (a) 5 — 2 1 1 — 1 — Variable lease expense (a) 27 2 22 11 11 — — 1 Finance lease expense Amortization of leased assets (b) 160 7 57 35 22 — — — Interest on lease liabilities (c) 46 31 45 43 2 — 1 — Total finance lease expense 206 38 102 78 24 — 1 — Total lease expense $ 474 $ 81 $ 283 $ 170 $ 113 $ 11 $ 19 $ 3 (a) Included in Operations, maintenance and other, except for expense related to barges and railcars which is included in Fuel used in electric generation and purchased power on the Consolidated Statements of Operations. (b) Included in Depreciation and amortization on the Consolidated Statements of Operations. (c) Included in Interest Expense on the Consolidated Statements of Operations. The following table presents operating lease maturities and a reconciliation of the undiscounted cash flows to operating lease liabilities. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont 2025 $ 256 $ 24 $ 121 $ 55 $ 66 $ 1 $ 7 $ 5 2026 241 21 124 59 65 1 7 1 2027 191 14 97 60 37 1 5 1 2028 153 11 82 59 23 1 3 1 2029 120 10 74 52 22 1 3 — Thereafter 458 53 307 156 151 4 24 — Total operating lease payments 1,419 133 805 441 364 9 49 8 Less: Present value discount (254) (26) (151) (67) (84) (2) (10) — Total operating lease liabilities (a) $ 1,165 $ 107 $ 654 $ 374 $ 280 $ 7 $ 39 $ 8 (a) Certain operating lease payments include renewal options that are reasonably certain to be exercised. The following table presents finance lease maturities and a reconciliation of the undiscounted cash flows to finance lease liabilities. December 31, 2024 Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Indiana 2025 $ 86 $ 38 $ 91 $ 80 $ 11 $ 1 2026 87 38 92 81 11 1 2027 82 38 89 81 8 1 2028 79 38 87 81 6 1 2029 79 38 88 81 7 1 Thereafter 489 351 444 393 51 21 Total finance lease payments 902 541 891 797 94 26 Less: Amounts representing interest (332) (271) (310) (282) (28) (16) Total finance lease liabilities $ 570 $ 270 $ 581 $ 515 $ 66 $ 10 The following tables contain additional information related to leases. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Classification Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Assets Operating Operating lease ROU assets, net $ 1,148 $ 98 $ 625 $ 348 $ 277 $ 6 $ 37 $ 4 Finance Net property, plant and equipment 645 252 620 512 108 — 6 — Total lease assets $ 1,793 $ 350 $ 1,245 $ 860 $ 385 $ 6 $ 43 $ 4 Liabilities Current Operating Other current liabilities $ 208 $ 20 $ 97 $ 42 $ 55 $ 1 $ 6 $ 1 Finance Current maturities of long-term debt 46 8 48 41 7 — — — Noncurrent Operating Operating lease liabilities 957 87 557 332 225 6 33 7 Finance Long-Term Debt 524 262 533 474 59 — 10 — Total lease liabilities $ 1,735 $ 377 $ 1,235 $ 889 $ 346 $ 7 $ 49 $ 8 December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Classification Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Assets Operating Operating lease ROU assets, net $ 1,092 $ 78 $ 617 $ 318 $ 299 $ 16 $ 50 $ 4 Finance Net property, plant and equipment 687 268 615 552 63 — 6 — Total lease assets $ 1,779 $ 346 $ 1,232 $ 870 $ 362 $ 16 $ 56 $ 4 Liabilities Current Operating Other current liabilities $ 188 $ 15 $ 94 $ 45 $ 49 $ 1 $ 6 $ — Finance Current maturities of long-term debt 115 8 46 38 8 — — — Noncurrent Operating Operating lease liabilities 917 75 544 293 251 16 46 10 Finance Long-Term Debt 524 269 525 514 11 — 9 — Total lease liabilities $ 1,744 $ 367 $ 1,209 $ 890 $ 319 $ 17 $ 61 $ 10 Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Cash paid for amounts included in the measurement of lease liabilities (a) Operating cash flows from operating leases $ 250 $ 24 $ 122 $ 57 $ 65 $ 1 $ 8 $ 1 Operating cash flows from finance leases 41 31 44 41 3 — 1 — Financing cash flows from finance leases 113 7 46 38 8 — — — Lease assets obtained in exchange for new lease liabilities (non-cash) Operating $ 322 $ 50 $ 43 $ 3 $ 40 $ — $ 7 $ 3 Finance 81 1 55 — 55 — 1 — Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Cash paid for amounts included in the measurement of lease liabilities (a) Operating cash flows from operating leases $ 228 $ 18 $ 123 $ 64 $ 59 $ 2 $ 7 $ — Operating cash flows from finance leases 46 31 45 43 2 — 1 — Financing cash flows from finance leases 160 7 57 35 22 — — — Lease assets obtained in exchange for new lease liabilities (non-cash) Operating $ 286 $ 14 $ 92 $ 1 $ 91 $ 2 $ 6 $ 2 Finance 36 — — — — — — — (a) No amounts were classified as investing cash flows from operating leases. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Weighted average remaining lease term (years) Operating leases 8 9 9 8 11 11 11 4 Finance leases 11 15 11 10 15 — 20 — Weighted average discount rate (a) Operating leases 4.3 % 4.3 % 4.0 % 3.9 % 4.2 % 4.1 % 4.0 % 3.9 % Finance leases 8.4 % 11.5 % 8.9 % 9.2 % 5.9 % — % 11.7 % — % December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Weighted average remaining lease term (years) Operating leases 9 10 10 9 11 13 13 4 Finance leases 11 16 11 11 18 — 22 3 Weighted average discount rate (a) Operating leases 3.1 % 4.0 % 3.8 % 3.6 % 4.0 % 4.2 % 3.9 % 2.4 % Finance leases 8.5 % 11.5 % 9.1 % 9.2 % 7.6 % — % 11.9 % 5.4 % (a) The discount rate is calculated using the rate implicit in a lease if it is readily determinable. Generally, the rate used by the lessor is not provided to Duke Energy and in these cases the incremental borrowing rate is used. Duke Energy will typically use its fully collateralized incremental borrowing rate as of the commencement date to calculate and record the lease. The incremental borrowing rate is influenced by the lessee’s credit rating and lease term and as such may differ for individual leases, embedded leases or portfolios of leased assets.

Debt and Credit Facilities

Debt and Credit Facilities	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Debt and Credit Facilities	DEBT AND CREDIT FACILITIES Summary of Debt and Related Terms The following tables summarize outstanding debt. December 31, 2024 Weighted Average Duke Duke Duke Duke Duke Interest Duke Energy Progress Energy Energy Energy Energy (in millions) Rate Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Unsecured debt, maturing 2025-2082 4.53 % $ 34,283 $ 1,605 $ 2,085 $ 185 $ 250 $ 1,380 $ 390 $ 4,030 Secured debt, maturing 2025-2052 3.75 % 3,672 1,463 2,147 1,269 879 — — — First mortgage bonds, maturing 2025-2074 (a) 4.24 % 39,842 13,955 19,223 9,974 9,247 2,722 3,937 — Finance leases, maturing 2027-2054 570 270 581 515 66 — 10 — Tax-exempt bonds, maturing 2027-2046 (b) 3.85 % 1,331 — 500 500 — 77 352 — Notes payable and commercial paper (c) 4.67 % 4,213 — — — — — — — Money pool/intercompany borrowings — 300 1,227 761 467 189 160 739 Fair value hedge carrying value adjustment (82) — — — — — — — Unamortized debt discount and premium, net (d) 845 (20) (44) (24) (19) (23) (16) (8) Unamortized debt issuance costs (e) (401) (83) (146) (65) (76) (18) (25) (19) Total debt 4.37 % $ 84,273 $ 17,490 $ 25,573 $ 13,115 $ 10,814 $ 4,327 $ 4,808 $ 4,742 Short-term notes payable and commercial paper (3,584) — — — — — — — Short-term money pool/intercompany borrowings — — (1,077) (611) (466) (162) (10) (739) Current maturities of long-term debt (f) (4,349) (521) (1,517) (983) (534) (245) (4) (205) Total long-term debt (f) $ 76,340 $ 16,969 $ 22,979 $ 11,521 $ 9,814 $ 3,920 $ 4,794 $ 3,798 (a) Substantially all electric utility property is mortgaged under mortgage bond indentures. (b) Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility. (c) Includes $625 million classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy's commercial paper progra m w as 13 days. (d) Duke Energy includes $925 million and $56 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively. (e) Duke Energy includes $23 million in purchase accounting adjustments primarily related to the merger with Progress Energy. (f) Refer to Note 18 for additional information on amounts from consolidated VIEs. December 31, 2023 Weighted Average Duke Duke Duke Duke Duke Interest Duke Energy Progress Energy Energy Energy Energy (in millions) Rate Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Unsecured debt, maturing 2024-2082 4.36 % $ 30,435 $ 1,150 $ 1,800 $ — $ 150 $ 1,155 $ 393 $ 3,695 Secured debt, maturing 2024-2052 4.23 % 4,202 1,441 2,379 1,121 1,258 — — — First mortgage bonds, maturing 2025-2073 (a) 4.18 % 37,443 12,955 18,550 9,475 9,075 2,300 3,638 — Finance leases, maturing 2024-2051 (b) 639 277 571 552 19 — 9 — Tax-exempt bonds, maturing 2027-2046 (c) 3.89 % 1,331 — 500 500 — 77 352 — Notes payable and commercial paper (d) 5.58 % 4,925 — — — — — — — Money pool/intercompany borrowings — 968 1,193 1,041 152 638 407 538 Fair value hedge carrying value adjustment 32 — — — — — — — Unamortized debt discount and premium, net (e) 916 (29) (46) (24) (20) (24) (16) (8) Unamortized debt issuance costs (f) (383) (82) (145) (60) (81) (15) (25) (19) Total debt 4.35 % $ 79,540 $ 16,680 $ 24,802 $ 12,605 $ 10,553 $ 4,131 $ 4,758 $ 4,206 Short-term notes payable and commercial paper (4,288) — — — — — — — Short-term money pool/intercompany borrowings — (668) (1,043) (891) (152) (613) (256) (538) Current maturities of long-term debt (g) (2,800) (19) (661) (72) (589) — (4) (40) Total long-term debt (g) $ 72,452 $ 15,993 $ 23,098 $ 11,642 $ 9,812 $ 3,518 $ 4,498 $ 3,628 (a) Substantially all electric utility property is mortgaged under mortgage bond indentures. (b) Duke Energy includes $63 million of finance lease purchase accounting adjustments related to Duke Energy Florida related to PPAs that are not accounted for as finance leases in their respective financial statements because of grandfathering provisions in GAAP. (c) Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility. (d) Includes $625 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy's commercial paper programs was 23 days. (e) Duke Energy includes $992 million and $69 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively. (f) Duke Energy includes $25 million in purchase accounting adjustments primarily related to the merger with Progress Energy. (g) Refer to Note 18 for additional information on amounts from consolidated VIEs. Current Maturities of Long-Term Debt The following table shows the significant components of Current maturities of Long-Term Debt on the Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings. (in millions) Maturity Date Interest Rate December 31, 2024 Unsecured Debt Duke Energy (Parent) April 2025 3.364 % $ 420 Duke Energy (Parent) April 2025 3.950 % 250 Duke Energy Ohio June 2025 6.900 % 150 Duke Energy (Parent) September 2025 0.900 % 650 Piedmont September 2025 3.600 % 150 Duke Energy Florida (a) October 2025 5.303 % 100 Duke Energy Ohio (b) October 2025 3.230 % 95 Duke Energy (Parent) December 2025 5.000 % 500 Secured Debt Duke Energy Carolinas (a) January 2025 5.378 % 305 Duke Energy Carolinas (a) January 2025 5.423 % 195 Duke Energy Progress (a) April 2025 5.456 % 240 Duke Energy Progress (a) April 2025 5.467 % 160 First Mortgage Bonds Duke Energy Florida (a)(c) October 2073 4.910 % 200 Duke Energy Florida (a)(c) April 2074 4.910 % 173 Duke Energy Progress August 2025 3.250 % 500 Other (d) 261 Current maturities of long-term debt $ 4,349 (a) Debt has a floating interest rate . The $500 million in Duke Energy Carolinas borrowings due January 2025 were repaid in conjunction with the termination of the DERF accounts receivable securitization facility in January 2025. (b) Current maturity relates to Duke Energy Kentucky. (c) These first mortgage bonds are classified as Current maturities of long-term debt on the Consolidated Balance Sheets based on terms of the indentures, which could require repayment in less than 12 months if exercised by the bondholders. (d) Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities. Maturities and Call Options The following table shows the annual maturities of long-term debt for the next five years and thereafter. Amounts presented exclude short-term notes payable, commercial paper and money pool borrowings and debt issuance costs for the Subsidiary Registrants. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy (a) Carolinas Energy Progress Florida Ohio Indiana Piedmont 2025 $ 4,349 $ 521 $ 1,525 $ 984 $ 541 $ 245 $ 4 $ 205 2026 4,925 1,078 539 470 69 45 4 40 2027 3,082 26 807 89 718 77 27 300 2028 3,937 976 1,411 593 819 40 7 — 2029 4,971 778 1,618 847 771 530 155 660 Thereafter 58,976 14,214 18,786 9,610 7,525 3,270 4,643 2,825 Total long-term debt, including current maturities $ 80,240 $ 17,593 $ 24,686 $ 12,593 $ 10,443 $ 4,207 $ 4,840 $ 4,030 (a) Excludes $1,004 million in purchase accounting adjustments related to the Progress Energy merger and the Piedmont acquisition. The Duke Energy Registrants have the ability under certain debt facilities to call and repay the obligation prior to its scheduled maturity. Therefore, the actual timing of future cash repayments could be materially different than as presented above. Short-Term Obligations Classified as Long-Term Debt Tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder and certain commercial paper issuances and money pool borrowings are classified as Long-Term Debt on the Consolidated Balance Sheets. These tax-exempt bonds, commercial paper issuances and money pool borrowings, which are short-term obligations by nature, are classified as long-term due to Duke Energy’s intent and ability to utilize such borrowings as long-term financing. As Duke Energy’s Master Credit Facility and other bilateral letter of credit agreements have non-cancelable terms in excess of one year as of the balance sheet date, Duke Energy has the ability to refinance these short-term obligations on a long-term basis. The following tables show short-term obligations classified as long-term debt. Balance at December 31, 2024 and 2023 Duke Duke Duke Duke Duke Energy Energy Energy Energy (in millions) Energy Carolinas Progress Ohio Indiana Tax-exempt bonds $ 312 $ — $ — $ 27 $ 285 Commercial paper (a) 625 300 150 25 150 Total $ 937 $ 300 $ 150 $ 52 $ 435 (a) Progress Energy amounts are equal to Duke Energy Progress amounts. Summary of Significant Debt Issuances In January 2025, Duke Energy Carolinas issued $1.1 billion of first mortgage bonds. The issuance consisted of a $400 million, five-year tranche at 4.85% and a $700 million, 10-year tranche at 5.25%. The net proceeds were used to pay off the $500 million DERF accounts receivable securitization facility maturing in January 2025, to pay off short-term debt and for general company purposes. The following tables summarize significant debt issuances (in millions). Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Maturity Interest Duke Energy Energy Energy Energy Energy Energy Issuance Date Date Rate Energy (Parent) Carolinas Progress Florida Ohio Indiana Piedmont Unsecured Debt January 2024 (a) January 2027 4.850 % $ 600 $ 600 $ — $ — $ — $ — $ — $ — January 2024 (a) January 2029 4.850 % 650 650 — — — — — — April 2024 (e) April 2031 5.648 % 815 815 — — — — — — June 2024 (d) June 2034 5.450 % 750 750 — — — — — — June 2024 (d) June 2054 5.800 % 750 750 — — — — — — June 2024 (h) July 2031 5.900 % 80 — — — — 80 — — June 2024 (h) July 2034 6.000 % 95 — — — — 95 — — June 2024 (h) July 2039 6.170 % 50 — — — — 50 — — August 2024 (d) February 2035 5.100 % 375 — — — — — — 375 August 2024 (i) September 2054 6.450 % 1,000 1,000 — — — — — — Secured Debt April 2024 (f) March 2044 5.404 % 177 — — 177 — — — — First Mortgage Bonds January 2024 (b) January 2034 4.850 % $ 575 $ — $ 575 $ — — $ — $ — $ — January 2024 (b) January 2054 5.400 % 425 — 425 — — — — — March 2024 (b) March 2034 5.250 % 300 — — — — — 300 — March 2024 (c) March 2034 5.100 % 500 — — 500 — — — — March 2024 (d) March 2054 5.550 % 425 — — — — 425 — — April 2024 (g) April 2074 4.910 % 173 — — — 173 — — — Total issuances $ 7,740 $ 4,565 $ 1,000 $ 677 $ 173 $ 650 $ 300 $ 375 (a) Proceeds were used to repay the remaining $1 billion outstanding on Duke Energy (Parent)'s variable rate Term Loan Facility due March 2024, pay down a portion of short-term debt and for general corporate purposes. Duke Energy (Parent)'s Term Loan Facility was terminated in March 2024 in conjunction with the payoff of remaining borrowings. (b) Proceeds were used to pay down a portion of short-term debt and for general company purposes. (c) Proceeds were used to fund eligible green energy projects, pay down a portion of short-term debt and for general company purposes. (d) Proceeds were used to pay down a portion of short-term debt and for general corporate purposes. (e) In April 2024, Duke Energy issued 750 million euros aggregate principal amount of 3.75% senior notes due April 2031. Duke Energy's obligations under its euro-denominated fixed-rate notes were effectively converted to fixed-rate U.S. dollars at issuance through cross-currency swaps, mitigating foreign currency exchange risk associated with the interest and principal payments. The $815 million equivalent in U.S. dollars were used to repay a portion of a $1 billion debt maturity due April 2024, pay down short-term debt and for general corporate purposes. See Note 15 for additional information. (f) Proceeds were used to finance the South Carolina portion of restoration expenditures related to the following storms: Pax, Ulysses, Matthew, Florence, Michael, Dorian, Izzy and Jasper. See Notes 4 and 18 for more information. (g) Debt has a floating interest rate. Proceeds were used to pay down a portion of the DEFR accounts receivable securitization facility due in April 2024, and for general company purposes. See Note 18 for more information. (h) Debt issued by Duke Energy Kentucky with proceeds used to pay down a portion of short-term debt and for general corporate purposes. (i) Duke Energy issued $1 billion of fixed-to-fixed reset rate junior subordinated debentures (the debentures) with proceeds used to redeem Duke Energy’s outstanding Series B Preferred Stock and for general corporate purposes. The debentures will bear interest at 6.45% until September 1, 2034, and thereafter the interest rate will reset every five years to the five-year U.S. Treasury rate plus a spread of 2.588%. The debentures have early redemption options and are callable on or after June 2034 for 100% of the principal plus accrued interest. See Note 20 for additional information . Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Maturity Interest Duke Energy Energy Energy Energy Energy Energy Issuance Date Date Rate Energy (Parent) Carolinas Progress Florida Ohio Indiana Piedmont Unsecured Debt April 2023 (a) April 2026 4.125 % $ 1,725 $ 1,725 $ — $ — $ — $ — $ — $ — June 2023 (b) June 2033 5.400 % 350 — — — — — — 350 September 2023 (c) September 2033 5.750 % 600 600 — — — — — — September 2023 (c) September 2053 6.100 % 750 750 — — — — — — First Mortgage Bonds January 2023 (d) January 2033 4.950 % 900 — 900 — — — — — January 2023 (d) January 2053 5.350 % 900 — 900 — — — — — March 2023 (e) March 2033 5.250 % 500 — — 500 — — — — March 2023 (e) March 2053 5.350 % 500 — — 500 — — — — March 2023 (f) April 2033 5.250 % 375 — — — — 375 — — March 2023 (f) April 2053 5.650 % 375 — — — — 375 — — March 2023 (g) April 2053 5.400 % 500 — — — — — 500 — June 2023 (h) January 2033 4.950 % 350 — 350 — — — — — June 2023 (h) January 2054 5.400 % 500 — 500 — — — — — September 2023 (h) October 2073 4.910 % 200 — — — 200 — — — November 2023 (i) November 2033 5.875 % 600 — — — 600 — — — November 2023 (i) November 2053 6.200 % 700 — — — 700 — — — Total issuances $ 9,825 $ 3,075 $ 2,650 $ 1,000 $ 1,500 $ 750 $ 500 $ 350 (a) See "Duke Energy (Parent) Convertible Senior Notes" below for additional information. (b) Debt issued to repay $45 million of maturities due October 2023, to pay down a portion of short-term debt and for general corporate purposes. (c) Debt issued to repay $400 million of maturities due October 2023, to pay down a portion of short-term debt and for general corporate purposes. (d) Debt issued to repay $1 billion of maturities due March 2023, to pay down a portion of short-term debt and for general company purposes. (e) Debt issued to repay $300 million of maturities due September 2023, to pay down a portion of short-term debt and for general company purposes. (f) Debt issued to repay $300 million of maturities due September 2023, to pay down a portion of the $100 million Duke Energy Ohio Term Loan due October 2023, to repay a portion of short-term debt and for general corporate purposes. (g) Debt issued to repay the $300 million Duke Energy Indiana Term Loan due October 2023, to pay down a portion of short-term debt and for general company purposes. (h) Debt has a floating interest rate and was issued to pay down a portion of short-term debt and for general company purposes. (i) Debt issued to repay the $800 million Duke Energy Florida Term Loan due April 2024, to pay down a portion of short-term debt and for general company purposes. Duke Energy (Parent) Convertible Senior Notes In April 2023, Duke Energy (Parent) completed the sale of $1.7 billion 4.125% Convertible Senior Notes due April 2026 (convertible notes). The convertible notes are senior unsecured obligations of Duke Energy, and will mature on April 15, 2026, unless earlier converted or repurchased in accordance with their terms. The convertible notes bear interest at a fixed rate of 4.125% per year, payable semiannually in arrears on April 15 and October 15 of each year, beginning on October 15, 2023. Proceeds were used to repay a portion of outstanding commercial paper and for general corporate purposes. Prior to the close of business on the business day immediately preceding January 15, 2026, the convertible notes will be convertible at the option of the holders when the following conditions are met: • during any calendar quarter commencing after the calendar quarter ending on June 30, 2023, (and only during such calendar quarter) if the last reported sale price of Duke Energy common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; • during the five consecutive business day period after any 10 consecutive trading day period (the measurement period) in which the trading price, as defined, per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of Duke Energy common stock and the conversion rate on each such trading day; or • upon the occurrence of specified corporate events described in the indenture agreement. On or after January 15, 2026, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders of the convertible notes may convert all or any portion of their convertible notes at their option at any time at the conversion rate then in effect, irrespective of these conditions. Duke Energy will settle conversions of the convertible notes by paying cash up to the aggregate principal amount of the convertible notes to be converted and paying or delivering, as the case may be, cash, shares of Duke Energy's common stock, $0.001 par value per share, or a combination of cash and shares of its common stock, at its election, in respect of the remainder, if any, of its conversion obligation in excess of the aggregate principal amount of the convertible notes being converted. The conversion rate for the convertible notes is initially 8.4131 shares of Duke Energy's common stock per $1,000 principal amount of convertible notes. The initial conversion price of the convertible notes represents a premium of approximately 25% over the last reported sale price of Duke Energy’s common stock on the NYSE on April 3, 2023. The conversion rate and the corresponding conversion price will not be adjusted for any accrued and unpaid interest but will be subject to adjustment in some instances, such as stock splits or share combinations, certain distributions to common stockholders, or tender offers at off-market rates. The changes in the conversion rates are intended to make convertible note holders whole for changes in the fair value of Duke Energy common stock resulting from such events. Duke Energy may not redeem the convertible notes prior to the maturity date. Duke Energy issued the convertible notes pursuant to an indenture, dated as of April 6, 2023, by and between Duke Energy and The Bank of New York Mellon Trust Company, N.A., as trustee. The terms of the convertible notes include customary fundamental change provisions that require repayment of the notes with interest upon certain events, such as a stockholder approved plan of liquidation or if Duke Energy's common stock ceases to be listed on the NYSE. AVAILABLE CREDIT FACILITIES Master Credit Facility In March 2024, Duke Energy extended the termination date of its existing $9 billion Master Credit Facility to March 2029. The Duke Energy Registrants, excluding Progress Energy, have borrowing capacity under the Master Credit Facility up to a specified sublimit for each borrower. Duke Energy has the unilateral ability at any time to increase or decrease the borrowing sublimits of each borrower, subject to a maximum sublimit for each borrower. The amount available under the Master Credit Facility has been reduced to backstop issuances of commercial paper, certain letters of credit and variable-rate demand tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder. An amendment in conjunction with the issuance of the Convertible Senior Notes due April 2026 clarifies that payments due as a result of a conversion of a convertible note would not constitute an event of default. The table below includes borrowing sublimits and available capacity under these credit facilities. December 31, 2024 Duke Duke Duke Duke Duke Duke Duke Energy Energy Energy Energy Energy Energy (in millions) Energy (Parent) Carolinas Progress Florida Ohio Indiana Piedmont Facility size (a) $ 9,000 $ 2,275 $ 1,400 $ 1,500 $ 875 $ 1,050 $ 950 $ 950 Reduction to backstop issuances Commercial paper (b) (3,143) (608) (300) (736) (448) (182) (160) (709) Outstanding letters of credit (18) (6) (4) (1) (7) — — — Tax-exempt bonds (81) — — — — — (81) — Available capacity $ 5,758 $ 1,661 $ 1,096 $ 763 $ 420 $ 868 $ 709 $ 241 (a) Represents the sublimit of each borrower. (b) Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies in the Consolidated Balance Sheets. Duke Energy (Parent) Term Loan Facility Duke Energy (Parent) had a $1 billion revolving credit facility, which was terminated in March 2022 (Three-Year Revolving Credit Facility). In March 2022, Duke Energy (Parent) entered into a Term Loan Credit Facility (facility) with commitments totaling $1.4 billion maturing March 2024. Borrowings under the facility were used to repay amounts drawn under the Three-Year Revolving Credit Facility prior to its termination and for general corporate purposes, including repayment of a portion of Duke Energy's outstanding commercial paper. In December 2022, Duke Energy (Parent) repaid $400 million of the facility. In January 2024, Duke Energy (Parent) repaid the remaining $1 billion outstanding on the facility, which was classified as Current maturities of long-term debt on Duke Energy's Consolidated Balance Sheets as of December 31, 2023. In March 2024, Duke Energy (Parent) entered into a 364-day term loan facility with commitments totaling $700 million. In April 2024, $500 million was drawn under the facility with borrowings used for general corporate purposes. During the second quarter of 2024, Duke Energy (Parent) terminated the facility and repaid the $500 million in outstanding borrowings. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida Term Loan Facilities In November 2024, Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida entered into term loan facilities intended to meet incremental financing needs resulting from expenditures for the restoration of service and rebuilding of infrastructure related to hurricanes Debby, Helene and Milton as described in Note 4. Duke Energy Carolinas and Duke Energy Progress entered into two-year term loan facilities with commitments totaling $700 million and $250 million, respectively. Duke Energy Florida entered into a 364-day term loan facility with commitments totaling $800 million. Amounts may be drawn for six months from the Duke Energy Carolinas and Duke Energy Progress term loan facilities and for four months from the Duke Energy Florida term loan facility. Borrowings from the term loan facilities can be prepaid at any time and may be used to fund system restoration expenses and for general corporate purposes. Additionally, the Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida term loan facilities may be increased by $300 million, $150 million and $400 million, respectively. Through December 2024, $455 million and $185 million were drawn under the term loan facilities for Duke Energy Carolinas and Duke Energy Progress, respectively, which were both classified as Long-Term Debt on the Consolidated Balance Sheets as of December 31, 2024. Through December 2024, $100 million was drawn under the term loan facility for Duke Energy Florida, which was classified as Current maturities of long-term debt on the Consolidated Balance Sheets as of December 31, 2024. Additionally, in January and February 2025, an additional $145 million, $65 million, and $700 million were drawn under the term loan facilities for Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, respectively. Other Debt Matters In September 2022, Duke Energy filed a Form S-3 with the SEC. Under this Form S-3, which is uncapped, the Duke Energy Registrants, excluding Progress Energy, may issue debt and other securities, including preferred stock, in the future at amounts, prices and with terms to be determined at the time of future offerings. The registration statement was filed to replace a similar prior filing upon expiration of its three-year term and also allows for the issuance of common and preferred stock by Duke Energy. Also in September 2022, to replace another similar prior filing, Duke Energy filed an effective Form S-3 with the SEC to sell up to $4 billion of variable denomination floating-rate demand notes, called PremierNotes. The Form S-3 states that no more than $2 billion of the notes will be outstanding at any particular time. The notes are offered on a continuous basis and bear interest at a floating rate per annum determined by the Duke Energy PremierNotes Committee, or its designee, on a weekly basis. The interest rate payable on notes held by an investor may vary based on the principal amount of the investment. The notes have no stated maturity date, are non-transferable and may be redeemed in whole or in part by Duke Energy or at the investor’s option at any time. The balance as of December 31, 2024, and 2023, was $1,070 million and $985 million, respectively. The notes are short-term debt obligations of Duke Energy and are reflected as Notes payable and commercial paper on Duke Energy’s Consolidated Balance Sheets. Money Pool and Intercompany Credit Agreements The Subsidiary Registrants, excluding Progress Energy, are eligible to receive support for their short-term borrowing needs through participation with Duke Energy and certain of its subsidiaries in a money pool arrangement. Under this arrangement, those companies with short-term funds may provide short-term loans to affiliates participating in this arrangement. The money pool is structured such that the Subsidiary Registrants, excluding Progress Energy, separately manage their cash needs and working capital requirements. Accordingly, there is no net settlement of receivables and payables between money pool participants. Duke Energy (Parent) may loan funds to its participating subsidiaries, but may not borrow funds through the money pool. Accordingly, as the money pool activity is between Duke Energy and its subsidiaries, all money pool balances are eliminated within Duke Energy’s Consolidated Balance Sheets. Money pool receivable balances are reflected within Notes receivable from affiliated companies on the Subsidiary Registrants’ Consolidated Balance Sheets. Money pool payable balances are reflected within either Notes payable to affiliated companies or Long-Term Debt Payable to Affiliated Companies on the Subsidiary Registrants’ Consolidated Balance Sheets. In March 2022, Progress Energy closed a revolving credit agreement with Duke Energy (Parent), which allowed up to $2.5 billion intercompany borrowings. Restrictive Debt Covenants The Duke Energy Registrants’ debt and credit agreements contain various financial and other covenants. Duke Energy's Master Credit Facility contains a covenant requiring the debt-to-total capitalization ratio not to exceed 65% for each borrower, excluding Piedmont, and 70% for Piedmont. Failure to meet those covenants beyond applicable grace periods could result in accelerated due dates and/or termination of the agreements. As of December 31, 2024, each of the Duke Energy Registrants were in compliance with all covenants related to their debt agreements. In addition, some credit agreements may allow for acceleration of payments or termination of the agreements due to nonpayment, or acceleration of other significant indebtedness of the borrower or some of its subsidiaries. None of the debt or credit agreements contain material adverse change clauses. Other Loans As of December 31, 2024, and 2023, Duke Energy had loans outstanding of $903 million, including $32 million at Duke Energy Progress, and $873 million, including $32 million at Duke Energy Progress, respectively, against the cash surrender value of life insurance policies it owns on the lives of its executives. The amounts outstanding were carried as a reduction of the related cash surrender value that is included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets.

Guarantees and Indemnifications

Guarantees and Indemnifications	12 Months Ended
	Dec. 31, 2024
Guarantees [Abstract]
Guarantees and Indemnifications	GUARANTEES AND INDEMNIFICATIONS Duke Energy has various financial and performance guarantees and indemnifications with non-consolidated entities, which are issued in the normal course of business. As discussed below, these contracts include performance guarantees, standby letters of credit, debt guarantees and indemnifications and include guarantees and indemnifications related to Commercial Renewables Disposal Groups as described in Note 2. Duke Energy enters into these arrangements to facilitate commercial transactions with third parties by enhancing the value of the transaction to the third party. At December 31, 2024, Duke Energy does not believe conditions are likely for significant performance under these guarantees. To the extent liabilities are incurred as a result of the activities covered by the guarantees, such liabilities are included on the accompanying Consolidated Balance Sheets. On January 2, 2007, Duke Energy completed the spin-off of its previously wholly owned natural gas businesses to shareholders. Guarantees issued by Duke Energy or its affiliates, or assigned to Duke Energy prior to the spin-off, remained with Duke Energy subsequent to the spin-off. Guarantees issued by Spectra Energy Capital, LLC (Spectra Capital) or its affiliates prior to the spin-off remained with Spectra Capital subsequent to the spin-off, except for guarantees that were later assigned to Duke Energy. Duke Energy has indemnified Spectra Capital against any losses incurred under certain of the guarantee obligations that remain with Spectra Capital. At December 31, 2024, the maximum potential amount of future payments associated with these guarantees were $25 million, the majority of which expire by 2028. In addition to the Spectra Capital guarantee above, Duke Energy has issued performance guarantees to customers and other third parties that guarantee the payment and performance of other parties, including certain non-wholly owned entities, as well as guarantees of debt of certain non-consolidated entities. If such entities were to default on payments or performance, Duke Energy would be required under the guarantees to make payments on the obligations of these entities. The maximum potential amount of future payments required under these guarantees that have capped maximums as of December 31, 2024, was $26 million of which all expire between 2025 and 2030. Additionally, certain guarantees that expire in 2025 have uncapped maximum potential payments; however, Duke Energy does not believe these guarantees will have a material effect on its results of operations, cash flows or financial position. Duke Energy uses bank-issued standby letters of credit to secure the performance of wholly owned and non-wholly owned entities to a third party or customer. Under these arrangements, Duke Energy has payment obligations to the issuing bank that are triggered by a draw by the third party or customer due to the failure of the wholly owned or non-wholly owned entity to perform according to the terms of its underlying contract. At December 31, 2024, Duke Energy had issued a total of $339 million in letters of credit, which expire between 2025 and 2027. There are no unused amounts under these letters of credit.

Joint Ownership of Generating a

Joint Ownership of Generating and Transmission Facilities	12 Months Ended
	Dec. 31, 2024
Joint Ownership Of Generating And Transmission Facilities [Abstract]
Joint Ownership of Generating and Transmission Facilities	JOINT OWNERSHIP OF GENERATING AND TRANSMISSION FACILITIES The Duke Energy Registrants maintain ownership interests in certain jointly owned generating and transmission facilities and are entitled to a share of the generating capacity and output of each unit equal to their respective ownership interests. The Duke Energy Registrants pay their ownership share of additional construction costs, fuel inventory purchases and operating expenses. The Duke Energy Registrants' share of revenues and operating costs of the jointly owned facilities is included within the corresponding line in the Consolidated Statements of Operations. Each participant in the jointly owned facilities must provide its own financing. The following table presents the Duke Energy Registrants' interest of jointly owned plant or facilities and amounts included on the Consolidated Balance Sheets. All facilities are operated by the Duke Energy Registrants and are included in the EU&I segment. December 31, 2024 Construction Ownership Property, Plant Accumulated Work in (in millions except for ownership interest) Interest and Equipment Depreciation Progress Duke Energy Carolinas Catawba (units 1 and 2) (a) 19.25 % $ 1,047 $ 594 $ 30 W.S. Lee CC (b) 87.27 % 654 118 6 Duke Energy Indiana Gibson (unit 5) (c) 50.05 % 400 266 5 Vermillion (d) 62.50 % 184 124 — Transmission and local facilities (c) Various 7,771 1,654 222 (a) Jointly owned with North Carolina Municipal Power Agency Number 1, NCEMC and PMPA. (b) Jointly owned with NCEMC. (c) Jointly owned with WVPA and IMPA. (d) Jointly owned with WVPA.

Asset Retirement Obligations

Asset Retirement Obligations	12 Months Ended
	Dec. 31, 2024
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	ASSET RETIREMENT OBLIGATIONS Duke Energy records an ARO when it has a legal obligation to incur retirement costs associated with the retirement of a long-lived asset and the obligation can be reasonably estimated. Certain assets of the Duke Energy Registrants have an indeterminate life, such as transmission and distribution facilities, and thus the fair value of the retirement obligation is not reasonably estimable. A liability for these AROs will be recorded when a fair value is determinable. The Duke Energy Registrants’ regulated operations accrue costs of removal for property that does not have an associated legal retirement obligation based on regulatory orders from state commissions. These costs of removal are recorded as a regulatory liability in accordance with regulatory accounting treatment. The amount spent may be higher than the amount accrued and result in a net asset. See Note 4 for the estimated cost of removal without an associated legal retirement obligation, which are included in Regulatory assets or Regulatory liabilities, as appropriate, on the Consolidated Balance Sheets. The following table presents the AROs recorded on the Consolidated Balance Sheets. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Decommissioning of nuclear power facilities $ 4,493 $ 2,050 $ 2,425 $ 2,318 $ 107 $ — $ — $ — Closure of ash impoundments 5,173 1,867 1,993 1,975 18 72 1,241 — Other 326 73 130 41 89 67 27 29 Total asset retirement obligation $ 9,992 $ 3,990 $ 4,548 $ 4,334 $ 214 $ 139 $ 1,268 $ 29 Less: Current portion 650 247 231 230 1 8 164 — Total noncurrent asset retirement obligation $ 9,342 $ 3,743 $ 4,317 $ 4,104 $ 213 $ 131 $ 1,104 $ 29 Nuclear Decommissioning Liability AROs related to nuclear decommissioning are based on site-specific cost studies. The NCUC and the PSCSC require Duke Energy Carolinas and Duke Energy Progress to update cost estimates for decommissioning their nuclear plants every five years. The nuclear decommissioning liabilities are assessed and updated based on changes in cash flows provided in new studies as well as annual assessments to evaluate whether any indicators suggest a change in the estimate of the ARO is necessary. The following table summarizes information about the most recent site-specific nuclear decommissioning cost studies. Decommissioning costs are stated in 2023 or 2024 dollars, depending on the year of the cost study, and include costs to decommission plant components not subject to radioactive contamination. Decommissioning (in millions) Costs Year of Cost Study Duke Energy $ 9,031 2023 or 2024 Duke Energy Carolinas (a) 4,439 2023 Progress Energy 4,592 2024 Duke Energy Progress (b) 4,477 2024 Duke Energy Florida (c) 115 N/A (a) Decommissioning costs for Duke Energy Carolinas reflect its ownership interest in jointly owned reactors. Other joint owners are responsible for decommissioning costs related to their interest in the reactors. Duke Energy Carolinas' site-specific nuclear decommissioning cost study and a funding study were filed with the NCUC and PSCSC in 2024. (b) Duke Energy Progress' site-specific nuclear decommissioning cost study was filed with the NCUC and PSCSC in February 2025. An updated funding study will be completed and filed with the NCUC and PSCSC in 2025. (c) During 2019, Duke Energy Florida reached an agreement to transfer decommissioning work for Crystal River Unit 3 to a third party and decommissioning costs are based on the agreement with this third party rather than a cost study. Regulatory approval was received from the NRC and the FPSC in April 2020 and August 2020, respectively. Duke Energy Florida provides the FPSC periodic reports on the status and progress of decommissioning activities. Nuclear Decommissioning Trust Funds Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida each maintain NDTFs that are intended to pay for the decommissioning costs of their respective nuclear power plants. The NDTF investments are managed and invested in accordance with applicable requirements of various regulatory bodies including the NRC, FERC, NCUC, PSCSC, FPSC and the IRS. Use of the NDTF investments is restricted to nuclear decommissioning activities including license termination, spent fuel and site restoration. The license termination and spent fuel obligations relate to contaminated decommissioning and are recorded as AROs. The site restoration obligation relates to non-contaminated decommissioning and is recorded to cost of removal within Regulatory liabilities on the Consolidated Balance Sheets. The following table presents the fair value of NDTF assets legally restricted for purposes of settling AROs associated with nuclear decommissioning. Duke Energy Florida entered into an agreement with a third party to decommission Crystal River Unit 3 and was granted an exemption from the NRC, which allows for use of the NDTF for all aspects of nuclear decommissioning. The entire balance of Duke Energy Florida's NDTF may be applied toward license termination, spent fuel and site restoration costs incurred to decommission Crystal River Unit 3 and is excluded from the table below. See Note 17 for additional information related to the fair value of the Duke Energy Registrants' NDTFs. December 31, (in millions) 2024 2023 Duke Energy $ 10,044 $ 8,851 Duke Energy Carolinas 5,687 5,002 Progress Energy 4,357 3,849 Duke Energy Progress 4,357 3,849 Nuclear Operating Licenses As described in Note 4, Duke Energy Carolinas and Duke Energy Progress intend to seek renewal of operating licenses and 20-year license extensions for all of their nuclear stations. The following table includes the current expiration of nuclear operating licenses. Unit Year of Expiration Duke Energy Carolinas Catawba Units 1 and 2 2043 McGuire Unit 1 2041 McGuire Unit 2 2043 Oconee Units 1 and 2 2033 Oconee Unit 3 2034 Duke Energy Progress Brunswick Unit 1 2036 Brunswick Unit 2 2034 Harris 2046 Robinson 2030 The NRC has acknowledged permanent cessation of operation and permanent removal of fuel from the reactor vessel at Crystal River Unit 3. Therefore, the license no longer authorizes operation of the reactor. During 2019, Duke Energy Florida entered into an agreement for the accelerated decommissioning of Crystal River Unit 3. Regulatory approval was received from the NRC and the FPSC in April 2020 and August 2020, respectively. Closure of Ash Impoundments The Duke Energy Registrants are subject to state and federal regulations covering the closure of coal ash impoundments, including federal CCR rules and the Coal Ash Act, and other agreements. In April 2024, the EPA issued the 2024 CCR Rule, which significantly expands the scope of the 2015 CCR Rule by establishing regulatory requirements for inactive surface impoundments at retired generating facilities and previously unregulated coal ash sources at regulated facilities. AROs recorded on the Duke Energy Registrants' Consolidated Balance Sheets include the legal obligation for closure of coal ash basins and the disposal of related ash as a result of these regulations and agreements. The ARO amount recorded on the Consolidated Balance Sheets is based upon estimated closure costs for impacted ash impoundments. The amount recorded represents the discounted cash flows for estimated closure costs based upon specific closure plans. Actual costs to be incurred will be dependent upon factors that vary from site to site. The most significant factors are the method and time frame of closure at the individual sites. Closure methods considered include removing the water from ash basins, consolidating material as necessary and capping the ash with a synthetic barrier. The ultimate method and timetable for closure will be in compliance with standards set by federal and state regulations and other agreements. The ARO amount will be adjusted as additional information is gained through the closure and post-closure process, including acceptance and approval of compliance approaches, which may change management assumptions, and may result in a material change to the balance. See the ARO Liability Rollforward section below for information on revisions made to the coal ash liability during 2024 and 2023. Asset retirement costs associated with the AROs for operating plants and retired plants are included in Net property, plant and equipment and Regulatory assets, respectively, on the Consolidated Balance Sheets. See Note 4 for additional information on Regulatory assets related to AROs and Note 5 for additional information on commitments and contingencies. Cost recovery for future expenditures will be pursued through the normal ratemaking process with federal and state utility commissions, which permit recovery of reasonable and prudently incurred costs associated with Duke Energy’s regulated operations. See Note 4 for additional information on recovery of coal ash costs. ARO Liability Rollforward The following tables present changes in the liability associated with AROs. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Balance at December 31, 2022 $ 12,728 $ 5,382 $ 6,181 $ 5,823 $ 358 $ 154 $ 951 $ 26 Accretion expense (a) 523 254 237 225 12 7 33 1 Liabilities settled (b) (758) (256) (379) (292) (87) (15) (108) — Liabilities incurred in the current year 29 3 21 6 15 1 4 — Revisions in estimates of cash flows (c) (3,366) (1,370) (1,915) (1,892) (23) (11) (71) (1) Balance at December 31, 2023 9,156 4,013 4,145 3,870 275 136 809 26 Accretion expense (a) 434 183 199 190 9 7 49 2 Liabilities settled (b) (634) (212) (321) (232) (89) (7) (94) — Liabilities incurred in the current year 20 8 12 — 12 — — — Revisions in estimates of cash flows (c) 1,016 (2) 513 506 7 3 504 1 Balance at December 31, 2024 $ 9,992 $ 3,990 $ 4,548 $ 4,334 $ 214 $ 139 $ 1,268 $ 29 (a) Substantially all accretion expense has been deferred in accordance with regulatory accounting treatment. (b) Amounts primarily relate to ash impoundment closures and nuclear decommissioning. (c) The amounts recorded represent the discounted cash flows for estimated closure costs as evaluated on a site-by-site basis. The decreases in 2023 primarily relate to lower discounted cash flows for decommissioning the nuclear power facilities due to changes in estimates and economic assumptions including discount rates, cost escalation rates and cash flow timing, as well as lower unit costs associated with ash basin closure, routine maintenance and beneficiation activities, as well as reduction in monitoring wells needed. The increases in 2024 primarily relate to additional scope requirements to regulate the disposal of CCR in landfills and surface impoundments as a result of the 2024 CCR Rule, including an increase in groundwater monitoring wells.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	PROPERTY, PLANT AND EQUIPMENT The following tables summarize the property, plant and equipment for Duke Energy and its subsidiary registrants. December 31, 2024 Average Remaining Duke Duke Duke Duke Duke Useful Life Duke Energy Progress Energy Energy Energy Energy (in millions) (Years) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Land $ 2,569 $ 617 $ 1,134 $ 535 $ 599 $ 258 $ 144 $ 391 Plant – Regulated Electric generation, distribution and transmission 37 137,836 49,547 62,351 35,633 26,718 7,634 18,304 — Natural gas transmission and distribution 58 15,333 — — — — 4,255 — 11,078 Other buildings and improvements 41 2,982 1,256 698 391 307 418 372 238 Nuclear fuel 3,518 2,003 1,515 1,515 — — — — Equipment 13 3,863 997 1,252 753 499 542 490 170 Construction in process 7,850 2,735 3,657 1,884 1,773 385 406 405 Other 10 6,855 1,227 1,953 1,349 594 426 254 498 Total property, plant and equipment (a) 180,806 58,382 72,560 42,060 30,490 13,918 19,970 12,780 Total accumulated depreciation – regulated (b)(c) (55,535) (19,090) (23,586) (15,930) (7,650) (3,674) (6,848) (2,432) Total accumulated depreciation – other (d) (1,968) — — — — — — — Total net property, plant and equipment $ 123,303 $ 39,292 $ 48,974 $ 26,130 $ 22,840 $ 10,244 $ 13,122 $ 10,348 (a) Includes finance leases of $670 million, $336 million, $620 million, $512 million, $108 million and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy and Duke Energy Progress amounts are net of $159 million of accumulated amortization of finance leases. (b) Includes $1,824 million, $1,010 million, $814 million and $814 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. (c) Includes accumulated amortization of finance leases of $84 million and $4 million at Duke Energy Carolinas and Duke Energy Indiana, respectively. (d) Includes accumulated amortization of finance leases of $25 million at Duke Energy. December 31, 2023 Average Remaining Duke Duke Duke Duke Duke Useful Life Duke Energy Progress Energy Energy Energy Energy (in millions) (Years) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Land $ 2,345 $ 581 $ 1,012 $ 502 $ 510 $ 242 $ 133 $ 352 Plant – Regulated Electric generation, distribution and transmission 40 129,985 48,107 57,436 33,171 24,265 7,243 17,199 — Natural gas transmission and distribution 57 14,130 — — — — 3,993 — 10,137 Other buildings and improvements 42 2,887 1,213 677 377 300 421 355 221 Nuclear fuel 3,303 1,866 1,437 1,437 — — — — Equipment 14 3,409 870 1,104 654 450 474 442 143 Construction in process 8,372 2,578 3,941 1,661 2,280 427 427 690 Other 12 6,922 1,455 2,037 1,481 548 410 344 365 Total property, plant and equipment (a) 171,353 56,670 67,644 39,283 28,353 13,210 18,900 11,908 Total accumulated depreciation – regulated (b)(c) (54,323) (19,896) (22,300) (15,227) (7,067) (3,451) (6,501) (2,259) Total accumulated depreciation – other (d) (1,715) — — — — — — — Total net property, plant and equipment $ 115,315 $ 36,774 $ 45,344 $ 24,056 $ 21,286 $ 9,759 $ 12,399 $ 9,649 (a) Includes finance leases of $697 million, $335 million, $615 million, $552 million, $63 million, and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $292 million, $119 million and $173 million, respectively, of accumulated amortization of finance leases. (b) Includes $1,793 million, $991 million, $802 million and $802 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. (c) Includes accumulated amortization of finance leases of $3 million, $67 million, and $4 million at Duke Energy, Duke Energy Carolinas and Duke Energy Indiana, respectively. (d) Includes accumulated amortization of finance leases of $7 million at Duke Energy. The following table presents capitalized interest, which includes the debt component of AFUDC. Years Ended December 31, (in millions) 2024 2023 2022 Duke Energy $ 201 $ 201 $ 118 Duke Energy Carolinas 61 62 50 Progress Energy 57 41 26 Duke Energy Progress 52 35 19 Duke Energy Florida 5 6 7 Duke Energy Ohio 14 16 14 Duke Energy Indiana 13 21 3 Piedmont 8 8 4

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	GOODWILL AND INTANGIBLE ASSETS GOODWILL Duke Energy Duke Energy's Goodwill balance of $19.3 billion is allocated $17.4 billion to EU&I and $1.9 billion to GU&I on Duke Energy's Consolidated Balance Sheets at December 31, 2024, and 2023. There are no accumulated impairment charges. Duke Energy Ohio Duke Energy Ohio's Goodwill balance of $920 million, allocated $596 million to EU&I and $324 million to GU&I, is presented net of accumulated impairment charges of $216 million on the Consolidated Balance Sheets at December 31, 2024, and 2023. Progress Energy Progress Energy's Goodwill is included in the EU&I segment and there are no accumulated impairment charges. Piedmont Piedmont's Goodwill is included in the GU&I segment and there are no accumulated impairment charges. Goodwill Impairment Testing Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont are required to perform an annual goodwill impairment test as of the same date each year and, accordingly, perform their annual impairment testing of goodwill as of August 31. Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont update their test between annual tests if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. As the fair value for Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont exceeded their respective carrying values at the date of the annual impairment analysis, no goodwill impairment charges were recorded in 2024. INTANGIBLE ASSETS The following tables show the carrying amount and accumulated amortization of intangible assets included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets of the Duke Energy Registrants at December 31, 2024, and 2023. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Emission allowances $ 8 $ — $ 5 $ 2 $ 3 $ — $ 2 $ — Renewable energy certificates 241 103 136 136 — 2 — — Other 47 — 5 1 4 — — 22 Total gross carrying amounts 296 103 146 139 7 2 2 22 Accumulated amortization – other (19) — (3) — (3) — — (9) Total intangible assets, net $ 277 $ 103 $ 143 $ 139 $ 4 $ 2 $ 2 $ 13 December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Emission allowances $ 8 $ — $ 5 $ 2 $ 3 $ — $ 2 $ — Renewable energy certificates 232 97 133 133 — 2 — — Other 56 — 5 1 3 — — 22 Total gross carrying amounts 296 97 143 136 6 2 2 22 Accumulated amortization – other (14) — (3) — (3) — — (6) Total intangible assets, net $ 282 $ 97 $ 140 $ 136 $ 3 $ 2 $ 2 $ 16 Amortization Expense Amortization expense amounts for other intangible assets are immaterial for the years ended December 31, 2024, 2023 and 2022, and are expected to be immaterial for the next five years as of December 31, 2024.

Investments in Unconsolidated A

Investments in Unconsolidated Affiliates	12 Months Ended
	Dec. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Affiliates	INVESTMENTS IN UNCONSOLIDATED AFFILIATES EQUITY METHOD INVESTMENTS Investments in affiliates that are not controlled by Duke Energy, but over which it has significant influence, are accounted for using the equity method. The following table presents Duke Energy’s investments in unconsolidated affiliates accounted for under the equity method, as well as the respective equity in earnings (losses), by segment, for periods presented in this filing. Years Ended December 31, 2024 2023 2022 Equity in Equity in Equity in (in millions) Investments (losses) earnings Investments earnings earnings Electric Utilities and Infrastructure $ 28 $ (11) $ 97 $ 7 $ 7 Gas Utilities and Infrastructure 186 (48) 259 40 21 Other 139 50 136 66 85 Total $ 353 $ (9) $ 492 $ 113 $ 113 During the years ended December 31, 2024, 2023 and 2022, Duke Energy received distributions from equity inve stments of $66 million, $50 million and $111 million, respectively, which are included in Other assets within Cash Flows from Operating Activities on the Consolidated Statements of Cash Flows. During the years ended December 31, 2024, 2023 and 2022, Duke Energy received distributions from equity investmen ts of $25 million, $16 million and $6 million , respectively, which are included in Return of investment capital within Cash Flows from Investing Activities on the Consolidated Statements of Cash Flows. During the years ended December 31, 2024, 2023 and 2022, Piedmont received distributions from equity invest ments of $9 million, $9 million and $31 million, respectively, which are included in Other assets within Cash Flows from Operating Activities. During the years ended December 31, 2024, and 2023, Piedmont received distributions from equity investments of $2 million and $1 million, respectively, which are included within Cash Flows from Investing Activities on the Consolidated Statements of Cash Flows. Amounts received during the year ended December 31, 2022, included in Cash Flows from Investing Activities on the Consolidated Statements of Cash Flows were immaterial. Significant investments in affiliates accounted for under the equity method are discussed below. Electric Utilities and Infrastructure Duke Energy owns a 50% interest in DATC. DATC owns 100% interest in DATC Path 15 Transmission LLC, which owns transmission rights in North America. In January 2025, Duke Energy entered into an agreement to sell its indirect 50% ownership interest in DATC Path 15 Transmission LLC. In conjunction with the sale and to reflect the investment's fair value as of December 31, 2024, a pretax charge of $15 million was recorded in Equity in (losses) earnings of unconsolidated affiliates on Duke Energy's Consolidated Statements of Operations for the year ended December 31, 2024. The transaction is expected to close in the second quarter of 2025. In November 2024, Duke Energy sold its 50% interest in Pioneer, which also builds, owns and operates electric transmission facilities in North America. Proceeds from the sale approximated the carrying value of the investment. Gas Utilities and Infrastructure Pipeline Investments Piedmont owns a 21.49% investment in Cardinal, an intrastate pipeline located in North Carolina. Duke Energy owns a 7.5% interest in Sabal Trail, a 517-mile interstate natural gas pipeline, which provides natural gas to Duke Energy Florida and Florida Power and Light. Storage Facilities Piedmont owns a 45% interest in Pine Needle, an interstate LNG storage facility located in North Carolina, and a 50% interest in Hardy Storage, an underground interstate natural gas storage facility located in West Virginia. Renewable Natural Gas Investments Duke Energy has held an investment in SustainRNG, a developer of renewable natural gas projects, and investments in multiple project companies developed by SustainRNG. In December 2024, Duke Energy recorded a pretax charge of $54 million within Equity in (losses) earnings of unconsolidated affiliates on the Consolidated Statements of Operations, fully impairing Duke Energy's investments in the project companies. Other Duke Energy has a 17.5% indirect economic ownership interest and a 25% board representation and voting rights interest in NMC, which owns and operates a methanol and MTBE business in Jubail, Saudi Arabia.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2024
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS The Subsidiary Registrants engage in related party transactions in accordance with the applicable state and federal commission regulations. Refer to the Consolidated Balance Sheets of the Subsidiary Registrants for balances due to or due from related parties. Transactions with related parties included in the Consolidated Statements of Operations and Comprehensive Income are presented in the following table. Years Ended December 31, (in millions) 2024 2023 2022 Duke Energy Carolinas Corporate governance and shared service expenses (a) $ 812 $ 823 $ 838 Indemnification coverages (b) 44 34 28 JDA revenue (c) 35 34 109 JDA expense (c) 187 177 600 Intercompany natural gas purchases (d) 12 11 12 Progress Energy Corporate governance and shared service expenses (a) $ 709 $ 736 $ 818 Indemnification coverages (b) 57 47 43 JDA revenue (c) 187 177 600 JDA expense (c) 35 34 109 Intercompany natural gas purchases (d) 75 75 76 Duke Energy Progress Corporate governance and shared service expenses (a) $ 426 $ 434 $ 469 Indemnification coverages (b) 23 20 20 JDA revenue (c) 187 177 600 JDA expense (c) 35 34 109 Intercompany natural gas purchases (d) 75 75 76 Duke Energy Florida Corporate governance and shared service expenses (a) $ 283 $ 302 $ 349 Indemnification coverages (b) 34 27 23 Duke Energy Ohio Corporate governance and shared service expenses (a) $ 304 $ 294 $ 334 Indemnification coverages (b) 6 5 5 Duke Energy Indiana Corporate governance and shared service expenses (a) $ 355 $ 365 $ 447 Indemnification coverages (b) 10 8 8 Piedmont Corporate governance and shared service expenses (a) $ 166 $ 149 $ 155 Indemnification coverages (b) 4 4 3 Intercompany natural gas sales (d) 87 86 88 Natural gas storage and transportation costs (e) 23 24 23 (a) The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are primarily recorded in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income. (b) The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income. (c) Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power and expenses from the purchase of power pursuant to the JDA are recorded in Operating Revenues and Fuel used in electric generation and purchased power, respectively, on the Consolidated Statements of Operations and Comprehensive Income. (d) Piedmont provides long-term natural gas delivery service to certain Duke Energy Carolinas and Duke Energy Progress natural gas-fired generation facilities. Piedmont records the sales in Operating Revenues, and Duke Energy Carolinas and Duke Energy Progress record the related purchases as a component of Fuel used in electric generation and purchased power on their respective Consolidated Statements of Operations and Comprehensive Income. These intercompany revenues and expenses are eliminated in consolidation. (e) Piedmont has related party transactions as a customer of its equity method investments in Pine Needle, Hardy Storage and Cardinal natural gas storage and transportation facilities. These expenses are included in Cost of natural gas on Piedmont's Consolidated Statements of Operations and Comprehensive Income. In addition to the amounts presented above, the Subsidiary Registrants have other affiliate transactions, including rental of office space, participation in a money pool arrangement, other operational transactions and their proportionate share of certain charged expenses. See Note 7 for more information regarding money pool. These transactions of the Subsidiary Registrants are incurred in the ordinary course of business and are eliminated in consolidation. As discussed in Note 18, certain trade receivables were previously sold by Duke Energy Ohio and Duke Energy Indiana to CRC, an affiliate formed by a subsidiary of Duke Energy. The proceeds obtained from the sales of receivables were largely cash but included a subordinated note from CRC for a portion of the purchase price. In March 2024, Duke Energy repaid all outstanding CRC borrowings and terminated the related CRC credit facility. Intercompany Income Taxes Duke Energy and the Subsidiary Registrants file a consolidated federal income tax return and other state and jurisdictional returns. The Subsidiary Registrants have a tax sharing agreement with Duke Energy for the allocation of consolidated tax liabilities and benefits. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. The following table includes the balance of intercompany income tax receivables and payables for the Subsidiary Registrants. Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Carolinas Energy Progress Florida Ohio Indiana Piedmont December 31, 2024 Intercompany income tax receivable $ — $ — $ — $ 154 $ — $ — $ — Intercompany income tax payable 419 169 315 — 43 110 43 December 31, 2023 Intercompany income tax receivable $ — $ — $ — $ — $ 91 $ 53 $ — Intercompany income tax payable 81 92 94 114 — — 57

Derivatives and Hedging

Derivatives and Hedging	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging	DERIVATIVES AND HEDGING The Duke Energy Registrants use commodity, interest rate and foreign currency contracts to manage commodity price risk, interest rate risk and foreign currency exchange rate risk. The primary use of commodity derivatives is to hedge the generation portfolio against changes in the prices of electricity and natural gas. Piedmont enters into natural gas supply contracts to provide diversification, reliability and natural gas cost benefits to its customers. Interest rate derivatives are used to manage interest rate risk associated with borrowings. Foreign currency derivatives are used to manage risk related to foreign currency exchange rates on certain issuances of debt. All derivative instruments not identified as NPNS are recorded at fair value as assets or liabilities on the Consolidated Balance Sheets. Cash collateral related to derivative instruments executed under master netting arrangements is offset against the collateralized derivatives on the Consolidated Balance Sheets. The cash impacts of settled derivatives are recorded as operating activities on the Consolidated Statements of Cash Flows. INTEREST RATE RISK The Duke Energy Registrants are exposed to changes in interest rates as a result of their issuance or anticipated issuance of variable-rate and fixed-rate debt and commercial paper. Interest rate risk is managed by limiting variable-rate exposures to a percentage of total debt and by monitoring changes in interest rates. To manage risk associated with changes in interest rates, the Duke Energy Registrants may enter into interest rate swaps, U.S. Treasury lock agreements and other financial contracts. In anticipation of certain fixed-rate debt issuances, a series of forward-starting interest rate swaps or Treasury locks may be executed to lock in components of current market interest rates. These instruments are later terminated prior to or upon the issuance of the corresponding debt. Cash Flow Hedges For a derivative designated as hedging the exposure to variable cash flows of a future transaction, referred to as a cash flow hedge, the effective portion of the derivative's gain or loss is initially reported as a component of other comprehensive income and subsequently reclassified into earnings once the future transaction impacts earnings. Amounts for interest rate contracts are reclassified to earnings as interest expense over the term of the related debt. Gains and losses reclassified out of AOCI for the years ended December 31, 2024, 2023, and 2022, were not material. Duke Energy's interest rate derivatives designated as hedges include forward-starting interest rate swaps not accounted for under regulatory accounting. Undesignated Contracts Undesignated contracts primarily include contracts not designated as a hedge because they are accounted for under regulatory accounting or contracts that do not qualify for hedge accounting. Duke Energy’s interest rate swaps for its regulated operations employ regulatory accounting. With regulatory accounting, the mark-to-market gains or losses on the swaps are deferred as regulatory liabilities or regulatory assets, respectively. Regulatory assets and liabilities are amortized consistent with the treatment of the related costs in the ratemaking process. The accrual of interest on the swaps is recorded as Interest Expense on the Duke Energy Registrant's Consolidated Statements of Operations and Comprehensive Income. The following tables show notional amounts of outstanding derivatives related to interest rate risk. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Indiana Ohio Cash flow hedges $ 2,825 $ — $ — $ — $ — $ — $ — Undesignated contracts 3,202 1,150 1,775 1,125 650 250 27 Total notional amount $ 6,027 $ 1,150 $ 1,775 $ 1,125 $ 650 $ 250 $ 27 December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Indiana Ohio Cash flow hedges $ 2,300 $ — $ — $ — $ — $ — $ — Undesignated contracts 2,727 1,050 1,250 925 325 400 27 Total notional amount $ 5,027 $ 1,050 $ 1,250 $ 925 $ 325 $ 400 $ 27 COMMODITY PRICE RISK The Duke Energy Registrants are exposed to the impact of changes in the prices of electricity purchased and sold in bulk power markets and natural gas purchases, including Piedmont's natural gas supply contracts. Exposure to commodity price risk is influenced by a number of factors including the term of contracts, the liquidity of markets and delivery locations. To manage risk associated with commodity prices, the Duke Energy Registrants may enter into long-term power purchase or sales contracts and long-term natural gas supply agreements. Undesignated Contracts For the Subsidiary Registrants, bulk power electricity and natural gas purchases flow through fuel adjustment clauses, formula-based contracts or other cost sharing mechanisms. Differences between the costs included in rates and the incurred costs, including undesignated derivative contracts, are largely deferred as regulatory assets or regulatory liabilities. Piedmont policies allow for the use of financial instruments to hedge commodity price risks. The strategy and objective of these hedging programs are to use the financial instruments to reduce natural gas cost volatility for customers. Volumes The tables below include volumes of outstanding commodity derivatives. Amounts disclosed represent the absolute value of notional volumes of commodity contracts excluding NPNS. The Duke Energy Registrants have netted contractual amounts where offsetting purchase and sale contracts exist with identical delivery locations and times of delivery. Where all commodity positions are perfectly offset, no quantities are shown. December 31, 2024 Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy Carolinas Energy Progress Ohio Indiana Piedmont Electricity (GWh) 12,229 — — — 1,287 10,942 — Natural gas (millions of Dth) 779 276 246 246 — 32 225 December 31, 2023 Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy Carolinas Energy Progress Ohio Indiana Piedmont Electricity (GWh) 13,608 — — — 1,616 11,992 — Natural gas (millions of Dth) 846 279 274 274 — 30 263 FOREIGN CURRENCY RISK Duke Energy may enter into foreign currency derivatives to hedge exposure to changes in foreign currency exchange rates, such as that arising from the issuance of debt denominated in a currency other than U.S. dollars. Fair Value Hedges Derivatives related to existing fixed rate securities are accounted for as fair value hedges, where the derivatives’ fair value gains or losses and hedged items’ fair value gains or losses are both recorded directly to earnings on the same income statement line item, including foreign currency gains or losses arising from changes in the U.S. currency exchange rates. Duke Energy has elected to exclude the cross-currency basis spread from the assessment of effectiveness in the fair value hedges of its foreign currency risk and record any difference between the change in the fair value of the excluded components and the amounts recognized in earnings as a component of other comprehensive income or loss. The following table shows Duke Energy's outstanding derivatives related to foreign currency risk. Fair Value Gain (Loss) (a) Receive Hedge (in millions) Pay Notional Notional Receive Maturity Years Ended December 31, (in millions) Pay Rate (in millions) Rate Date 2024 2023 2022 Fair value hedges $ 645 4.75 % 600 euros 3.10 % June 2028 $ (41) $ 17 $ (3) 537 5.31 % 500 euros 3.85 % June 2034 (34) 15 (2) 815 5.65 % 750 euros 3.75 % April 2031 (38) — — Total notional amount $ 1,997 1,850 euros $ (113) $ 32 $ (5) (a) Amounts are recorded in Other Income and expenses, net on the Consolidated Statement of Operations, which offsets an equal translation adjustment of the foreign denominated debt. See the Consolidated Statements of Comprehensive Income for amounts excluded from the assessment of effectiveness for which the difference between changes in fair value and periodic amortization is recorded. LOCATION AND FAIR VALUE OF DERIVATIVE ASSETS AND LIABILITIES RECOGNIZED IN THE CONSOLIDATED BALANCE SHEETS The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are netted on the Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives has not been netted against the fair values shown. Derivative Assets December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Commodity Contracts Not Designated as Hedging Instruments Current $ 49 $ 20 $ 17 $ 17 $ — $ 1 $ 8 $ 1 Noncurrent 60 29 32 32 — — — — Total Derivative Assets – Commodity Contracts $ 109 $ 49 $ 49 $ 49 $ — $ 1 $ 8 $ 1 Interest Rate Contracts Designated as Hedging Instruments Current $ 108 $ — $ — $ — $ — $ — $ — $ — Noncurrent 52 — — — — — — — Not Designated as Hedging Instruments Current $ 110 $ 19 $ 55 $ 44 $ 11 $ — $ 36 $ — Noncurrent 50 26 23 16 7 — — — Total Derivative Assets – Interest Rate Contracts $ 320 $ 45 $ 78 $ 60 $ 18 $ — $ 36 $ — Foreign Currency Contracts Designated as Hedging Instruments Noncurrent 5 — — — — — — — Total Derivative Assets – Foreign Currency Contracts $ 5 $ — $ — $ — $ — $ — $ — $ — Total Derivative Assets $ 434 $ 94 $ 127 $ 109 $ 18 $ 1 $ 44 $ 1 Derivative Liabilities December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Commodity Contracts Not Designated as Hedging Instruments Current $ 108 $ 57 $ 32 $ 32 $ — $ — $ 3 $ 16 Noncurrent 134 31 24 24 — — — 78 Total Derivative Liabilities – Commodity Contracts $ 242 $ 88 $ 56 $ 56 $ — $ — $ 3 $ 94 Interest Rate Contracts Not Designated as Hedging Instruments Current 2 — 2 1 1 — — — Noncurrent 1 — — — — 1 — — Total Derivative Liabilities – Interest Rate Contracts $ 3 $ — $ 2 $ 1 $ 1 $ 1 $ — $ — Foreign Currency Contracts Designated as Hedging Instruments Current $ 35 $ — $ — $ — $ — $ — $ — $ — Noncurrent 39 — — — — — — — Total Derivative Liabilities – Foreign Currency Contracts $ 74 $ — $ — $ — $ — $ — $ — $ — Total Derivative Liabilities $ 319 $ 88 $ 58 $ 57 $ 1 $ 1 $ 3 $ 94 Derivative Assets December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Commodity Contracts Not Designated as Hedging Instruments Current $ 25 $ 1 $ 3 $ 1 $ 2 $ 1 $ 18 $ 1 Noncurrent 57 26 31 31 — — — — Total Derivative Assets – Commodity Contracts $ 82 $ 27 $ 34 $ 32 $ 2 $ 1 $ 18 $ 1 Interest Rate Contracts Designated as Hedging Instruments Current $ 31 $ — $ — $ — $ — $ — $ — $ — Noncurrent 17 — — — — — — — Not Designated as Hedging Instruments Current $ 5 $ 5 $ — $ — $ — $ — $ — $ — Noncurrent 10 3 — — — — 7 — Total Derivative Assets – Interest Rate Contracts $ 63 $ 8 $ — $ — $ — $ — $ 7 $ — Foreign Currency Contracts Designated as Hedging Instruments Noncurrent $ 44 $ — $ — $ — $ — $ — $ — $ — Total Derivative Assets – Foreign Currency Contracts $ 44 $ — $ — $ — $ — $ — $ — $ — Total Derivative Assets $ 189 $ 35 $ 34 $ 32 $ 2 $ 1 $ 25 $ 1 Derivative Liabilities December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Not Designated as Hedging Instruments Current $ 354 $ 177 $ 138 $ 138 $ — $ — $ 18 $ 20 Noncurrent 255 67 61 61 — — — 127 Total Derivative Liabilities – Commodity Contracts $ 609 $ 244 $ 199 $ 199 $ — $ — $ 18 $ 147 Interest Rate Contracts Designated as Hedging Instruments Current $ 25 $ — $ — $ — $ — $ — $ — $ — Noncurrent 26 — — — — — — — Not Designated as Hedging Instruments Current 13 2 11 11 — — — — Noncurrent 39 14 24 9 15 1 — — Total Derivative Liabilities – Interest Rate Contracts $ 103 $ 16 $ 35 $ 20 $ 15 $ 1 $ — $ — Foreign Currency Contracts Designated as Hedging Instruments Current $ 17 $ — $ — $ — $ — $ — $ — $ — Total Derivative Liabilities – Foreign Currency Contracts $ 17 $ — $ — $ — $ — $ — $ — $ — Total Derivative Liabilities $ 729 $ 260 $ 234 $ 219 $ 15 $ 1 $ 18 $ 147 OFFSETTING ASSETS AND LIABILITIES The following tables present the line items on the Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below. Derivative Assets December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current Gross amounts recognized $ 267 $ 39 $ 72 $ 61 $ 11 $ 1 $ 44 $ 1 Offset (29) (15) (14) (14) — — — — Net amounts presented in Current Assets: Other $ 238 $ 24 $ 58 $ 47 $ 11 $ 1 $ 44 $ 1 Noncurrent Gross amounts recognized $ 167 $ 55 $ 55 $ 48 $ 7 $ — $ — $ — Offset (37) (19) (17) (17) — — — — Net amounts presented in Other Noncurrent Assets: Other $ 130 $ 36 $ 38 $ 31 $ 7 $ — $ — $ — Derivative Liabilities December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current Gross amounts recognized $ 145 $ 57 $ 34 $ 33 $ 1 $ — $ 3 $ 16 Offset (29) (15) (14) (14) — — — — Cash collateral posted (3) (2) — — — — (1) — Net amounts presented in Current Liabilities: Other $ 113 $ 40 $ 20 $ 19 $ 1 $ — $ 2 $ 16 Noncurrent Gross amounts recognized $ 174 $ 31 $ 24 $ 24 $ — $ 1 $ — $ 78 Offset (37) (19) (17) (17) — — — — Cash collateral posted (4) (4) — — — — — — Net amounts presented in Other Noncurrent Liabilities: Other $ 133 $ 8 $ 7 $ 7 $ — $ 1 $ — $ 78 Derivative Assets December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current Gross amounts recognized $ 61 $ 6 $ 3 $ 1 $ 2 $ 1 $ 18 $ 1 Offset (2) (1) (1) (1) — — — — Net amounts presented in Current Assets: Other $ 59 $ 5 $ 2 $ — $ 2 $ 1 $ 18 $ 1 Noncurrent Gross amounts recognized $ 128 $ 29 $ 31 $ 31 $ — $ — $ 7 $ — Offset (37) (14) (22) (22) — — — — Net amounts presented in Other Noncurrent Assets: Other $ 91 $ 15 $ 9 $ 9 $ — $ — $ 7 $ — Derivative Liabilities December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current Gross amounts recognized $ 409 $ 179 $ 149 $ 149 $ — $ — $ 18 $ 20 Offset (2) (1) (1) (1) — — — — Cash collateral posted (96) (48) (30) (30) — — (18) — Net amounts presented in Current Liabilities: Other $ 311 $ 130 $ 118 $ 118 $ — $ — $ — $ 20 Noncurrent Gross amounts recognized $ 320 $ 81 $ 85 $ 70 $ 15 $ 1 $ — $ 127 Offset (37) (14) (22) (22) — — — — Cash collateral posted (66) (38) (28) (28) — — — — Net amounts presented in Other Noncurrent Liabilities: Other $ 217 $ 29 $ 35 $ 20 $ 15 $ 1 $ — $ 127 OBJECTIVE CREDIT CONTINGENT FEATURES Certain derivative contracts contain objective credit contingent features. These features include the requirement to post cash collateral or letters of credit if specific events occur, such as a credit rating downgrade below investment grade. The following tables show information with respect to derivative contracts that are in a net liability position and contain objective credit risk-related payment provisions. December 31, 2024 Duke Duke Duke Energy Progress Energy (in millions) Energy Carolinas Energy Progress Aggregate fair value of derivatives in a net liability position $ 101 $ 52 $ 49 $ 49 Fair value of collateral already posted 6 6 — — Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered 95 46 49 49 December 31, 2023 Duke Duke Duke Energy Progress Energy (in millions) Energy Carolinas Energy Progress Aggregate fair value of derivatives in a net liability position $ 342 $ 175 $ 166 $ 166 Fair value of collateral already posted 144 86 58 58 Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered 198 89 108 108 The Duke Energy Registrants have elected to offset cash collateral and fair values of derivatives. For amounts to be netted, the derivative and cash collateral must be executed with the same counterparty under the same master netting arrangement.

Investments in Debt and Equity

Investments in Debt and Equity Securities	12 Months Ended
	Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Equity Securities	INVESTMENTS IN DEBT AND EQUITY SECURITIES Duke Energy’s investments in debt and equity securities are primarily comprised of investments held in (i) the NDTF at Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, (ii) the grantor trusts at Duke Energy Florida and Duke Energy Indiana related to OPEB plans and (iii) Bison. The Duke Energy Registrants classify investments in debt securities as AFS and investments in equity securities as FV-NI. For investments in debt securities classified as AFS, the unrealized gains and losses are included in other comprehensive income until realized, at which time they are reported through net income. For investments in equity securities classified as FV-NI, both realized and unrealized gains and losses are reported through net income. Substantially all of Duke Energy’s investments in debt and equity securities qualify for regulatory accounting, and accordingly, all associated realized and unrealized gains and losses on these investments are deferred as a regulatory asset or liability. Duke Energy classifies the majority of investments in debt and equity securities as long term, unless otherwise noted. Investment Trusts The investments within the Investment Trusts are managed by independent investment managers with discretion to buy, sell and invest pursuant to the objectives set forth by the investment manager agreements and trust agreements. The Duke Energy Registrants have limited oversight of the day-to-day management of these investments. As a result, the ability to hold investments in unrealized loss positions is outside the control of the Duke Energy Registrants. Accordingly, all unrealized losses associated with debt securities within the Investment Trusts are recognized immediately and deferred to regulatory accounts where appropriate. Other AFS Securities Unrealized gains and losses on all other AFS securities are included in other comprehensive income until realized, unless it is determined the carrying value of an investment has a credit loss. The Duke Energy Registrants analyze all investment holdings each reporting period to determine whether a decline in fair value is related to a credit loss. If a credit loss exists, the unrealized credit loss is included in earnings. There were no material credit losses as of December 31, 2024, and 2023. Other Investments amounts are recorded in Other within Other Noncurrent Assets on the Consolidated Balance Sheets. DUKE ENERGY The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value NDTF Cash and cash equivalents $ — $ — $ 139 $ — $ — $ 133 Equity securities 5,753 61 8,233 4,942 22 7,278 Corporate debt securities 6 33 673 12 43 632 Municipal bonds 2 14 342 6 16 347 U.S. government bonds 3 84 1,806 24 65 1,575 Other debt securities 1 8 239 1 13 178 Total NDTF Investments $ 5,765 $ 200 $ 11,432 $ 4,985 $ 159 $ 10,143 Other Investments Cash and cash equivalents $ — $ — $ 47 $ — $ — $ 31 Equity securities 39 4 160 33 — 158 Corporate debt securities — 5 79 — 6 82 Municipal bonds — 1 83 1 2 77 U.S. government bonds — 5 59 — 2 65 Other debt securities — 4 45 — 2 47 Total Other Investments $ 39 $ 19 $ 473 $ 34 $ 12 $ 460 Total Investments $ 5,804 $ 219 $ 11,905 $ 5,019 $ 171 $ 10,603 Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2024, 2023 and 2022, were as follows. Years Ended December 31, (in millions) 2024 2023 2022 FV-NI: Realized gains $ 600 $ 129 $ 201 Realized losses 85 146 316 AFS: Realized gains 28 44 28 Realized losses 67 140 151 DUKE ENERGY CAROLINAS The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value NDTF Cash and cash equivalents $ — $ — $ 62 $ — $ — $ 51 Equity securities 3,386 33 4,751 2,886 14 4,196 Corporate debt securities 2 27 401 4 35 390 Municipal bonds — 4 36 — 4 50 U.S. government bonds — 50 991 13 33 826 Other debt securities 1 8 223 1 13 172 Total NDTF Investments $ 3,389 $ 122 $ 6,464 $ 2,904 $ 99 $ 5,685 Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2024, 2023 and 2022, were as follows. Years Ended December 31, (in millions) 2024 2023 2022 FV-NI: Realized gains $ 298 $ 82 $ 124 Realized losses 40 79 177 AFS: Realized gains 14 22 22 Realized losses 40 65 86 PROGRESS ENERGY The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value NDTF Cash and cash equivalents $ — $ — $ 77 $ — $ — $ 82 Equity securities 2,367 28 3,482 2,056 8 3,082 Corporate debt securities 4 6 272 8 8 242 Municipal bonds 2 10 306 6 12 297 U.S. government bonds 3 34 815 11 32 749 Other debt securities — — 16 — — 6 Total NDTF Investments $ 2,376 $ 78 $ 4,968 $ 2,081 $ 60 $ 4,458 Other Investments Cash and cash equivalents $ — $ — $ 23 $ — $ — $ 18 Municipal bonds — — 24 — 1 23 Total Other Investments $ — $ — $ 47 $ — $ 1 $ 41 Total Investments $ 2,376 $ 78 $ 5,015 $ 2,081 $ 61 $ 4,499 Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2024, 2023 and 2022, were as follows. Years Ended December 31, (in millions) 2024 2023 2022 FV-NI: Realized gains $ 302 $ 47 $ 77 Realized losses 45 67 139 AFS: Realized gains 14 22 6 Realized losses 27 75 48 DUKE ENERGY PROGRESS The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value NDTF Cash and cash equivalents $ — $ — $ 54 $ — $ — $ 55 Equity securities 2,256 28 3,362 1,956 8 2,970 Corporate debt securities 4 6 256 7 8 229 Municipal bonds 2 10 306 6 12 297 U.S. government bonds 3 26 645 10 18 518 Other debt securities — — 14 — — 6 Total NDTF Investments $ 2,265 $ 70 $ 4,637 $ 1,979 $ 46 $ 4,075 Other Investments Cash and cash equivalents $ — $ — $ 16 $ — $ — $ 14 Total Other Investments $ — $ — $ 16 $ — $ — $ 14 Total Investments $ 2,265 $ 70 $ 4,653 $ 1,979 $ 46 $ 4,089 Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2024, 2023 and 2022, were as follows. Years Ended December 31, (in millions) 2024 2023 2022 FV-NI: Realized gains $ 288 $ 44 $ 76 Realized losses 44 66 136 AFS: Realized gains 13 20 6 Realized losses 26 70 44 DUKE ENERGY FLORIDA The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value NDTF Cash and cash equivalents $ — $ — $ 23 $ — $ — $ 27 Equity securities 111 — 120 100 — 112 Corporate debt securities — — 16 1 — 13 U.S. government bonds — 8 170 1 14 231 Other debt securities — — 2 — — — Total NDTF Investments (a) $ 111 $ 8 $ 331 $ 102 $ 14 $ 383 Other Investments Cash and cash equivalents $ — $ — $ 3 $ — $ — $ 3 Municipal bonds — — 24 — 1 23 Total Other Investments $ — $ — $ 27 $ — $ 1 $ 26 Total Investments $ 111 $ 8 $ 358 $ 102 $ 15 $ 409 (a) During the years ended December 31, 2024, and 2023, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3. Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2024, 2023 and 2022, were immaterial. DUKE ENERGY INDIANA The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value Investments Cash and cash equivalents $ — $ — $ 1 $ — $ — $ 1 Equity securities — 4 89 4 — 98 Corporate debt securities — — 6 — — 8 Municipal bonds — 1 43 1 1 46 U.S. government bonds — — 7 — — 10 Total Investments $ — $ 5 $ 146 $ 5 $ 1 $ 163 Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2024, 2023 and 2022, were immaterial. DEBT SECURITY MATURITIES The table below summarizes the maturity date for debt securities. December 31, 2024 Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Indiana Due in one year or less $ 89 $ 9 $ 62 $ 12 $ 50 $ 4 Due after one through five years 791 303 408 310 98 20 Due after five through 10 years 721 441 234 219 15 12 Due after 10 years 1,725 898 729 680 49 20 Total $ 3,326 $ 1,651 $ 1,433 $ 1,221 $ 212 $ 56

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair value is the exchange price to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. The fair value definition focuses on an exit price versus the acquisition cost. Fair value measurements use market data or assumptions market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs may be readily observable, corroborated by market data, or generally unobservable. Valuation techniques maximize the use of observable inputs and minimize the use of unobservable inputs. A midmarket pricing convention (the midpoint price between bid and ask prices) is permitted for use as a practical expedient. Fair value measurements are classified in three levels based on the fair value hierarchy as defined by GAAP. Certain investments are not categorized within the fair value hierarchy. These investments are measured at fair value using the net asset value per share practical expedient. The net asset value is derived based on the investment cost, less any impairment, plus or minus changes resulting from observable price changes for an identical or similar investment of the same issuer. Fair value accounting guidance permits entities to elect to measure certain financial instruments that are not required to be accounted for at fair value, such as equity method investments or the Company’s own debt, at fair value. The Duke Energy Registrants have not elected to record any of these items at fair value. Valuation methods of the primary fair value measurements disclosed below are as follows. Investments in equity securities The majority of investments in equity securities are valued using Level 1 measurements. Investments in equity securities are typically valued at the closing price in the principal active market as of the last business day of the quarter. Principal active markets for equity prices include published exchanges such as the NYSE and Nasdaq Stock Market. Foreign equity prices are translated from their trading currency using the currency exchange rate in effect at the close of the principal active market. There was no after-hours market activity that was required to be reflected in the reported fair value measurements. Investments in debt securities Most investments in debt securities are valued using Level 2 measurements because the valuations use interest rate curves and credit spreads applied to the terms of the debt instrument (maturity and coupon interest rate) and consider the counterparty credit rating. If the market for a particular fixed-income security is relatively inactive or illiquid, the measurement is Level 3. Commodity derivatives Commodity derivatives with clearinghouses are classified as Level 1. Commodity derivatives with observable forward curves are classified as Level 2. If forward price curves are not observable for the full term of the contract and the unobservable period had more than an insignificant impact on the valuation, the commodity derivative is classified as Level 3. In isolation, increases (decreases) in natural gas forward prices result in favorable (unfavorable) fair value adjustments for natural gas purchase contracts; and increases (decreases) in electricity forward prices result in unfavorable (favorable) fair value adjustments for electricity sales contracts. Duke Energy regularly evaluates and validates pricing inputs used to estimate the fair value of certain commodity contracts by a market participant price verification procedure. This procedure provides a comparison of internal forward commodity curves to market participant generated curves. Interest rate derivatives Most over-the-counter interest rate contract derivatives are valued using financial models that utilize observable inputs for similar instruments and are classified as Level 2. Inputs include forward interest rate curves, notional amounts, interest rates and credit quality of the counterparties. Foreign currency derivatives Most over-the-counter foreign currency derivatives are valued using financial models that utilize observable inputs for similar instruments and are classified as Level 2. Inputs include forward foreign currency rate curves, notional amounts, foreign currency rates and credit quality of the counterparties. Other fair value considerations See Note 2 for further information on the valuation of the Commercial Renewables Disposal Groups. See Note 12 for a discussion of the valuation of goodwill and intangible assets. DUKE ENERGY The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 15. See Note 16 for additional information related to investments by major security type for the Duke Energy Registrants. December 31, 2024 (in millions) Total Fair Value Level 1 Level 2 Level 3 Not Categorized NDTF cash and cash equivalents $ 139 $ 139 $ — $ — $ — NDTF equity securities 8,233 8,203 2 — 28 NDTF debt securities 3,060 1,022 2,038 — — Other equity securities 160 160 — — — Other debt securities 266 52 214 — — Other cash and cash equivalents 47 47 — — — Derivative assets 434 2 423 9 — Total assets 12,339 9,625 2,677 9 28 Derivative liabilities (319) (3) (316) — — Net assets $ 12,020 $ 9,622 $ 2,361 $ 9 $ 28 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Level 3 Not Categorized NDTF cash and cash equivalents $ 133 $ 133 $ — $ — $ — NDTF equity securities 7,278 7,241 — — 37 NDTF debt securities 2,732 829 1,903 — — Other equity securities 158 158 — — — Other debt securities 271 55 216 — — Other cash and cash equivalents 31 31 — — — Derivative assets 189 37 137 15 — Total assets 10,792 8,484 2,256 15 37 Derivative liabilities (729) (60) (669) — — Net assets $ 10,063 $ 8,424 $ 1,587 $ 15 $ 37 The following table provides reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements. Derivatives (net) Years Ended December 31, (in millions) 2024 2023 Balance at beginning of period $ 15 $ 34 Purchases, sales, issuances and settlements: Purchases 29 47 Settlements (46) (72) Total gains included on the Consolidated Balance Sheet 11 6 Balance at end of period $ 9 $ 15 DUKE ENERGY CAROLINAS The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 (in millions) Total Fair Value Level 1 Level 2 Not Categorized NDTF cash and cash equivalents $ 62 $ 62 $ — $ — NDTF equity securities 4,751 4,721 2 28 NDTF debt securities 1,651 520 1,131 — Derivative assets 94 — 94 — Total assets 6,558 5,303 1,227 28 Derivative liabilities (88) — (88) — Net assets $ 6,470 $ 5,303 $ 1,139 $ 28 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Not Categorized NDTF cash and cash equivalents $ 51 $ 51 $ — $ — NDTF equity securities 4,196 4,159 — 37 NDTF debt securities 1,438 375 1,063 — Derivative assets 35 — 35 — Total assets 5,720 4,585 1,098 37 Derivative liabilities (260) — (260) — Net assets $ 5,460 $ 4,585 $ 838 $ 37 PROGRESS ENERGY The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 NDTF cash and cash equivalents $ 77 $ 77 $ — $ 82 $ 82 $ — NDTF equity securities 3,482 3,482 — 3,082 3,082 — NDTF debt securities 1,409 502 907 1,294 454 840 Other debt securities 24 — 24 23 — 23 Other cash and cash equivalents 23 23 — 18 18 — Derivative assets 127 — 127 34 — 34 Total assets 5,142 4,084 1,058 4,533 3,636 897 Derivative liabilities (58) — (58) (234) — (234) Net assets $ 5,084 $ 4,084 $ 1,000 $ 4,299 $ 3,636 $ 663 DUKE ENERGY PROGRESS The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 NDTF cash and cash equivalents $ 54 $ 54 $ — $ 55 $ 55 $ — NDTF equity securities 3,362 3,362 — 2,970 2,970 — NDTF debt securities 1,221 365 856 1,050 266 784 Other cash and cash equivalents 16 16 — 14 14 — Derivative assets 109 — 109 32 — 32 Total assets 4,762 3,797 965 4,121 3,305 816 Derivative liabilities (57) — (57) (219) — (219) Net assets $ 4,705 $ 3,797 $ 908 $ 3,902 $ 3,305 $ 597 DUKE ENERGY FLORIDA The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 NDTF cash and cash equivalents $ 23 $ 23 $ — $ 27 $ 27 $ — NDTF equity securities 120 120 — 112 112 — NDTF debt securities 188 137 51 244 188 56 Other debt securities 24 — 24 23 — 23 Other cash and cash equivalents 3 3 — 3 3 — Derivative assets 18 — 18 2 — 2 Total assets 376 283 93 411 330 81 Derivative liabilities (1) — (1) (15) — (15) Net assets $ 375 $ 283 $ 92 $ 396 $ 330 $ 66 DUKE ENERGY OHIO The recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets were not material at December 31, 2024, and 2023. DUKE ENERGY INDIANA The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Level 3 Total Fair Value Level 1 Level 2 Level 3 Other equity securities $ 89 $ 89 $ — $ — $ 98 $ 98 $ — $ — Other debt securities 56 — 56 — 64 — 64 — Other cash equivalents 1 1 — — 1 1 — — Derivative assets 44 — 36 8 25 5 7 13 Total assets 190 90 92 8 188 104 71 13 Derivative liabilities (3) (3) — — (18) (18) — — Net assets $ 187 $ 87 $ 92 $ 8 $ 170 $ 86 $ 71 $ 13 The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements. Derivatives (net) Years Ended December 31, (in millions) 2024 2023 Balance at beginning of period $ 13 $ 29 Purchases, sales, issuances and settlements: Purchases 27 42 Settlements (42) (68) Total gains included on the Consolidated Balance Sheet 10 10 Balance at end of period $ 8 $ 13 PIEDMONT The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 Derivative assets $ 1 $ 1 $ — $ 1 $ 1 $ — Derivative liabilities (94) — (94) (147) — (147) Net (liabilities) assets $ (93) $ 1 $ (94) $ (146) $ 1 $ (147) QUANTITATIVE INFORMATION ABOUT UNOBSERVABLE INPUTS The following tables include quantitative information about the Duke Energy Registrants' derivatives classified as Level 3. December 31, 2024 Weighted Fair Value Average Investment Type (in millions) Valuation Technique Unobservable Input Range Range Duke Energy Ohio FTRs $ 1 RTO auction pricing FTR price – per MWh $ — – $ 1.13 $ 0.48 Duke Energy Indiana FTRs 8 RTO auction pricing FTR price – per MWh (0.63) – 9.24 0.94 Duke Energy Total Level 3 derivatives $ 9 December 31, 2023 Weighted Fair Value Average Investment Type (in millions) Valuation Technique Unobservable Input Range Range Duke Energy Ohio FTRs $ 2 RTO auction pricing FTR price – per MWh $ 0.36 – $ 2.11 $ 0.71 Duke Energy Indiana FTRs 13 RTO auction pricing FTR price – per MWh (1.05) – 9.64 1.26 Duke Energy Total Level 3 derivatives $ 15 OTHER FAIR VALUE DISCLOSURES The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements. December 31, 2024 December 31, 2023 (in millions) Book Value Fair Value Book Value Fair Value Duke Energy (a) $ 80,689 $ 73,440 $ 75,252 $ 69,790 Duke Energy Carolinas 17,490 15,975 16,012 15,077 Progress Energy 24,496 22,548 23,759 22,553 Duke Energy Progress 12,504 11,009 11,714 10,595 Duke Energy Florida 10,348 9,752 10,401 10,123 Duke Energy Ohio 4,165 3,871 3,518 3,310 Duke Energy Indiana 4,798 4,329 4,502 4,230 Piedmont 4,003 3,584 3,668 3,336 (a) Book value of long-term de bt includes $1.0 billion as of December 31, 2024, and December 31, 2023, of unamortized debt discount and premium, net in purchase accounting adjustments related to the mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt. At both December 31, 2024, and December 31, 2023, fair value of cash and cash equivalents, accounts and notes receivable, accounts payable, notes payable and commercial paper, and nonrecourse notes payable of VIEs are not materially different from their carrying amounts because of the short-term nature of these instruments and/or because the stated rates approximate market rates.

Variable Interest Entities

Variable Interest Entities	12 Months Ended
	Dec. 31, 2024
Variable Interest Entities [Abstract]
Variable Interest Entities	VARIABLE INTEREST ENTITIES A VIE is an entity that is evaluated for consolidation using more than a simple analysis of voting control. The analysis to determine whether an entity is a VIE considers contracts with an entity, credit support for an entity, the adequacy of the equity investment of an entity and the relationship of voting power to the amount of equity invested in an entity. This analysis is performed either upon the creation of a legal entity or upon the occurrence of an event requiring reevaluation, such as a significant change in an entity’s assets or activities. A qualitative analysis of control determines the party that consolidates a VIE. This assessment is based on (i) what party has the power to direct the activities of the VIE that most significantly impact its economic performance and (ii) what party has rights to receive benefits or is obligated to absorb losses that could potentially be significant to the VIE. The analysis of the party that consolidates a VIE is a continual reassessment. CONSOLIDATED VIEs The obligations of the consolidated VIEs discussed in the following paragraphs are nonrecourse to the Duke Energy Registrants. The registrants have no requirement to provide liquidity to, purchase assets of or guarantee performance of these VIEs unless noted in the following paragraphs. No financial support was provided to any of the consolidated VIEs during the years ended December 31, 2024, 2023 and 2022, or is expected to be provided in the future, that was not previously contractually required. Receivables Financing – DERF/DEPR/DEFR DERF, DEPR and DEFR are bankruptcy remote, special purpose subsidiaries of Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida, respectively. DERF, DEPR and DEFR are wholly owned LLCs with separate legal existence from their parent companies, and their assets are not generally available to creditors of their parent companies. On a revolving basis, DERF, DEPR and DEFR buy certain accounts receivable arising from the sale of electricity and related services from their parent companies. DERF, DEPR and DEFR borrow amounts under credit facilities to buy these receivables. Borrowing availability from the credit facilities is limited to the amount of qualified receivables purchased, which generally exclude receivables past due more than a predetermined number of days and reserves for expected past-due balances. The sole source of funds to satisfy the related debt obligations is cash collections from the receivables. Amounts borrowed under the DERF, DEPR, and DEFR credit facilities are reflected on the Consolidated Balance Sheets as Current maturities of long-term debt. The most significant activity that impacts the economic performance of DERF, DEPR and DEFR are the decisions made to manage delinquent receivables. Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida are considered the primary beneficiaries and consolidate DERF, DEPR and DEFR, respectively, as they make those decisions. In April 2024, Duke Energy Florida repaid all outstanding DEFR borrowings totaling $325 million and terminated the related DEFR credit facility. Additionally, Duke Energy Florida's related restricted receivables outstanding at DEFR at the time of termination totaled $459 million and were transferred back to Duke Energy Florida to be collected and reported as Receivables on the Consolidated Balance Sheets. In January 2025, Duke Energy Carolinas repaid all outstanding DERF borrowings totaling $500 million and terminated the related DERF credit facility. Additionally, Duke Energy Carolinas' related restricted receivables outstanding at DERF at the time of termination totaled $1,081 million and were transferred back to Duke Energy Carolinas to be collected and reported as Receivables on the Consolidated Balance Sheets. Receivables Financing – CRC CRC is a bankruptcy remote, special purpose entity indirectly owned by Duke Energy. On a revolving basis, CRC bought certain accounts receivable arising from the sale of electricity, natural gas and related services from Duke Energy Ohio and Duke Energy Indiana. CRC then borrowed amounts under a credit facility to buy the receivables from Duke Energy Ohio and Duke Energy Indiana. Borrowing availability from the credit facility was limited to the amount of qualified receivables sold to CRC, which generally excluded receivables past due more than a predetermined number of days and reserves for expected past-due balances. The sole source of funds to satisfy the related debt obligation was cash collections from the receivables. The proceeds Duke Energy Ohio and Duke Energy Indiana received from the sale of receivables to CRC were approximately 75% cash and 25% in the form of a subordinated note from CRC. The subordinated note was a retained interest in the receivables sold. CRC was considered a VIE because (i) equity capitalization was insufficient to support its operations, (ii) power to direct the activities that most significantly impact the economic performance of the entity was not held by the equity holder and (iii) deficiencies in net worth of CRC were funded by Duke Energy. The most significant activities that impacted the economic performance of CRC were decisions made to manage delinquent receivables. Duke Energy was considered the primary beneficiary and consolidated CRC as it made these decisions. Neither Duke Energy Ohio nor Duke Energy Indiana consolidated CRC. In March 2024, Duke Energy repaid all outstanding CRC borrowings totaling $350 million and terminated the related CRC credit facility. Additionally, Duke Energy's related restricted receivables outstanding at CRC at the time of termination totaled $682 million, consisting of $316 million and $366 million of restricted receivables that were transferred back to Duke Energy Indiana and Duke Energy Ohio, respectively, to be collected and reported as Receivables on the Consolidated Balance Sheets. Receivables Financing – Credit Facilities The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables described above. Duke Energy Duke Energy Duke Energy Duke Energy Carolinas Progress Florida (in millions) CRC DERF DEPR DEFR Expiration date (a) (c) April 2025 (b) Credit facility amount (a) (c) $ 400 (b) Amounts borrowed at December 31, 2024 — 500 400 — Amounts borrowed at December 31, 2023 312 500 400 325 Restricted Receivables at December 31, 2024 — 1,054 835 — Restricted Receivables at December 31, 2023 663 991 833 532 (a) In March 2024, Duke Energy repaid all outstanding CRC borrowing and terminated the related $350 million CRC credit facility. (b) In April 2024, Duke Energy Florida repaid all outstanding DEFR borrowing and terminated the related $325 million DEFR credit facility. (c) In January 2025, Duke Energy Carolinas repaid all outstanding DERF borrowing and terminated the related $500 million DERF credit facility. Nuclear Asset-Recovery Bonds – Duke Energy Florida Project Finance Duke Energy Florida Project Finance, LLC (DEFPF) is a bankruptcy remote, wholly owned special purpose subsidiary of Duke Energy Florida. DEFPF was formed in 2016 for the sole purpose of issuing nuclear asset-recovery bonds to finance Duke Energy Florida's unrecovered regulatory asset related to Crystal River Unit 3. In 2016, DEFPF issued senior secured bonds and used the proceeds to acquire nuclear asset-recovery property from Duke Energy Florida. The nuclear asset-recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable nuclear asset-recovery charge from all Duke Energy Florida retail customers until the bonds are paid in full and all financing costs have been recovered. The nuclear asset-recovery bonds are secured by the nuclear asset-recovery property and cash collections from the nuclear asset-recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to Duke Energy Florida. DEFPF is considered a VIE primarily because the equity capitalization is insufficient to support its operations. Duke Energy Florida has the power to direct the significant activities of the VIE as described above and therefore Duke Energy Florida is considered the primary beneficiary and consolidates DEFPF. The following table summarizes the impact of DEFPF on Duke Energy Florida's Consolidated Balance Sheets. December 31, (in millions) 2024 2023 Regulatory Assets: Current 61 59 Current Assets: Other 35 37 Other Noncurrent Assets: Regulatory assets 741 803 Current Liabilities: Other 8 8 Current maturities of long-term debt 59 59 Long-Term Debt 773 831 Storm Recovery Bonds Duke Energy Carolinas NC Storm Funding, LLC (DECNCSF), Duke Energy Progress NC Storm Funding, LLC (DEPNCSF) and Duke Energy Progress SC Storm Funding, LLC (DEPSCSF) are bankruptcy remote, wholly owned special purpose subsidiaries of Duke Energy Carolinas and Duke Energy Progress. DECNCSF and DEPNCSF were formed in 2021 while DECSCSF was formed in 2024, all for the sole purpose of issuing storm recovery bonds to finance certain of Duke Energy Carolinas’ and Duke Energy Progress’ unrecovered regulatory assets related to storm costs incurred in North Carolina and South Carolina. In 2021, DECNCSF and DEPNCSF issued senior secured bonds, and used the proceeds to acquire storm recovery property from Duke Energy Carolinas and Duke Energy Progress. The storm recovery property was created by state legislation and NCUC financing orders for the purpose of financing storm costs incurred in 2018 and 2019. In April 2024, DEPSCSF issued $177 million of senior secured bonds and used the proceeds to acquire storm recovery property from Duke Energy Progress. The storm recovery property was created by state legislation and a PSCSC financing order for the purpose of financing storm costs incurred from 2014 through 2022. The storm recovery property acquired includes the right to impose, bill, collect and adjust a non-bypassable charge from all Duke Energy Carolinas’ and Duke Energy Progress’ North Carolina and South Carolina retail customers until the bonds are paid in full and all financing costs have been recovered. The storm recovery bonds are secured by the storm recovery property and cash collections from the storm recovery charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to Duke Energy Carolinas or Duke Energy Progress. These entities are considered VIEs primarily because their equity capitalization is insufficient to support their operations. Duke Energy Carolinas and Duke Energy Progress have the power to direct the significant activities of the VIEs as described above and therefore Duke Energy Carolinas and Duke Energy Progress are considered the primary beneficiaries. Duke Energy Carolinas consolidates DECNCSF and Duke Energy Progress consolidates DEPNCSF and DEPSCSF. The following table summarizes the impact of these VIEs on Duke Energy Carolinas’ and Duke Energy Progress’ Consolidated Balance Sheets. December 31, 2024 December 31, 2023 Duke Energy Carolinas Duke Energy Progress Duke Energy Carolinas Duke Energy Progress (in millions) DECNCSF DEPNCSF DEPSCSF DECNCSF DEPNCSF Regulatory Assets: Current $ 12 $ 39 $ 8 $ 12 $ 39 Current Assets: Other 9 27 13 9 31 Other Noncurrent Assets: Regulatory assets 189 620 155 196 643 Other Noncurrent Assets: Other 1 4 1 1 2 Current maturities of long-term debt 10 34 9 10 34 Current Liabilities: Other 2 10 7 3 8 Long-Term Debt 198 646 163 208 680 Purchasing Company – Duke Energy Florida Duke Energy Florida Purchasing Company, LLC (DEF ProCo) is a wholly owned special purpose subsidiary of Duke Energy Florida. DEF ProCo was formed in 2023 as the primary procurement agent for equipment, materials and supplies for Duke Energy Florida. DEF ProCo interacts with third-party suppliers on Duke Energy Florida’s behalf with credit and risk support provided by Duke Energy Florida. DEF ProCo is a qualified reseller under Florida tax law and conveys acquired assets to Duke Energy Florida through leases on each acquired asset. This entity is considered a VIE primarily because the equity capitalization is insufficient to support their operations. Duke Energy Florida has the power to direct the significant activities of this VIE as described above and therefore Duke Energy Florida is considered the primary beneficiary and consolidates the procurement company. The following table summarizes the impact of this VIE on Duke Energy Florida's Consolidated Balance Sheets. (in millions) December 31, 2024 December 31, 2023 Inventory $ 494 462 Accounts Payable 208 188 NON-CONSOLIDATED VIEs The following tables summarize the impact of non-consolidated VIEs on the Consolidated Balance Sheets. December 31, 2024 Duke Energy Duke Duke Natural Gas Energy Energy (in millions) Investments Ohio Indiana Receivables from affiliated companies $ — $ — $ — Investments in equity method unconsolidated affiliates — — — Other noncurrent assets 17 — — Total assets $ 17 $ — $ — Other current liabilities 2 — — Other noncurrent liabilities — — — Total liabilities 2 $ — $ — Net assets $ 15 $ — $ — December 31, 2023 Duke Energy Duke Duke Natural Gas Energy Energy (in millions) Investments Ohio Indiana Receivables from affiliated companies $ — $ 150 $ 208 Investments in equity method unconsolidated affiliates 67 — — Other noncurrent assets 43 — — Total assets $ 110 $ 150 $ 208 Other current liabilities 4 — — Other noncurrent liabilities 5 — — Total liabilities $ 9 $ — $ — Net assets $ 101 $ 150 $ 208 The Duke Energy Registrants are not aware of any situations where the maximum exposure to loss significantly exceeds the carrying values shown above. Natural Gas Investments Duke Energy has investments in various joint ventures including pipeline and renewable natural gas projects. These entities are considered VIEs due to having insufficient equity to finance their own activities without subordinated financial support. Duke Energy does not have the power to direct the activities that most significantly impact the economic performance, the obligation to absorb losses or the right to receive benefits of these VIEs and therefore does not consolidate these entities. CRC See discussion under Consolidated VIEs for additional information related to CRC. Amounts included in Receivables from affiliated companies in the above table for Duke Energy Ohio and Duke Energy Indiana reflect their retained interest in receivables sold to CRC as of December 31, 2023. The subordinated notes held by Duke Energy Ohio and Duke Energy Indiana are stated at fair value as of December 31, 2023. Prior to Duke Energy terminating the CRC credit facility, carrying values of retained interests were determined by allocating the carrying value of the receivables between assets sold and interests retained based on relative fair value. The allocated bases of the subordinated notes were not materially different than their face value because (i) the receivables generally turned over in less than two months, (ii) credit losses were reasonably predictable due to the broad customer base and lack of significant concentration and (iii) the equity in CRC was subordinate to all retained interests and thus would absorb losses first. The hypothetical effect on fair value of the retained interests assuming both a 10% and a 20% unfavorable variation in credit losses or discount rates was not material due to the short turnover of receivables and historically low credit loss history. Interest accrued to Duke Energy Ohio and Duke Energy Indiana on the retained interests using the acceptable yield method. Key assumptions used in estimating fair value as of December 31, 2023, are detailed in the following table. Duke Energy Ohio Duke Energy Indiana Anticipated credit loss ratio 0.6 % 0.4 % Discount rate 6.1 % 6.1 % Receivable turnover rate 13.9 % 12.0 % The following table shows the gross and net receivables sold. See discussion under Consolidated VIEs for additional information related to CRC's termination in March 2024. Duke Energy Ohio Duke Energy Indiana December 31, December 31, (in millions) 2024 2023 2024 2023 Receivables sold $ — $ 361 $ — $ 351 Less: Retained interests — 150 — 208 Net receivables sold $ — $ 211 $ — $ 143 The following table shows sales and cash flows related to receivables sold and reflects CRC activity prior to its termination in March 2024. Duke Energy Ohio Duke Energy Indiana Years Ended December 31, Years Ended December 31, (in millions) 2024 2023 2022 2024 2023 2022 Sales Receivables sold $ 474 $ 2,578 $ 2,562 $ 473 $ 3,223 $ 3,744 Loss recognized on sale 7 34 18 6 39 26 Cash flows Cash proceeds from receivables sold 478 2,591 2,424 523 3,294 3,498 Collection fees received — 1 1 — 2 2 Return received on retained interests 4 19 10 4 25 15 Cash flows from sales of receivables are reflected within Cash Flows From Operating Activities and Cash Flows from Investing Activities on Duke Energy Ohio’s and Duke Energy Indiana’s Consolidated Statements of Cash Flows. Collection fees received in connection with servicing transferred accounts receivable were included in Operation, maintenance and other on Duke Energy Ohio’s and Duke Energy Indiana’s Consolidated Statements of Operations and Comprehensive Income. The loss recognized on sales of receivables was calculated monthly by multiplying receivables sold during the month by the required discount. The required discount was derived monthly utilizing a three-year weighted average formula that considered charge-off history, late charge history and turnover history on the sold receivables, as well as a component for the time value of money. The discount rate, or component for the time value of money, was the prior month-end Daily Simple SOFR plus a fixed rate of 1%.

Revenue

Revenue	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue	REVENUE Duke Energy recognizes revenue consistent with amounts billed under tariff offerings or at contractually agreed upon rates based on actual physical delivery of electric or natural gas service, including estimated volumes delivered when billings have not yet occurred. As such, the majority of Duke Energy’s revenues have fixed pricing based on the contractual terms of the published tariffs. Absent decoupling mechanisms, the variability in expected cash flows of the majority of Duke Energy's revenue is attributable to the customer’s volumetric demand and ultimate quantities of energy or natural gas supplied and used during the billing period. The stand-alone selling price of related sales are designed to support recovery of prudently incurred costs and an appropriate return on invested assets and are primarily governed by published tariff rates or contractual agreements approved by relevant regulatory bodies. As described in Note 1, certain excise taxes and franchise fees levied by state or local governments are required to be paid even if not collected from the customer. These taxes are recognized on a gross basis as part of revenues. Duke Energy elects to account for all other taxes net of revenues. Performance obligations are satisfied over time as energy or natural gas is delivered and consumed with billings generally occurring monthly and related payments due within 30 days, depending on regulatory requirements. In no event does the timing between payment and delivery of the goods and services exceed one year. Using this output method for revenue recognition provides a faithful depiction of the transfer of electric and natural gas service as customers obtain control of the commodity and benefit from its use at delivery. Additionally, Duke Energy has an enforceable right to consideration for energy or natural gas delivered at any discrete point in time and will recognize revenue at an amount that reflects the consideration to which Duke Energy is entitled for the energy or natural gas delivered. As described above, the majority of Duke Energy’s tariff revenues are at will and, as such, related contracts with customers have an expected duration of one year or less and will not have future performance obligations for disclosure. Additionally, other long-term revenue streams, including wholesale contracts, generally provide services that are part of a single performance obligation, the delivery of electricity or natural gas. As such, other than material fixed consideration under long-term contracts, related disclosures for future performance obligations are also not applicable. Duke Energy earns substantially all of its revenues through its reportable segments, EU&I and GU&I. Electric Utilities and Infrastructure EU&I earns the majority of its revenues through retail and wholesale electric service through the generation, transmission, distribution and sale of electricity. Duke Energy generally provides retail and wholesale electric service customers with their full electric load requirements or with supplemental load requirements when the customer has other sources of electricity. Retail electric service is generally marketed throughout Duke Energy’s electric service territory through standard service offers. The standard service offers are through tariffs determined by regulators in Duke Energy's regulated service territory. Each tariff, which is assigned to customers based on customer class, has multiple components such as an energy charge, a demand charge, a basic facilities charge and applicable riders. Duke Energy considers each of these components to be aggregated into a single performance obligation for providing electric service, or in the case of distribution only customers in Duke Energy Ohio, for delivering electricity. Electricity is considered a single performance obligation satisfied over time consistent with the series guidance and is provided and consumed over the billing period, generally one month. Retail electric service is typically provided to at-will customers who can cancel service at any time, without a substantive penalty. Additionally, Duke Energy adheres to applicable regulatory requirements in each jurisdiction to ensure the collectability of amounts billed and appropriate mitigating procedures are followed when necessary. As such, revenue from contracts with customers for such contracts is equivalent to the electricity supplied and billed in that period (including unbilled estimates). Wholesale electric service is generally provided under long-term contracts using cost-based pricing. FERC regulates costs that may be recovered from customers and the amount of return companies are permitted to earn. Wholesale contracts include both energy and demand charges. For full requirements contracts, Duke Energy considers both charges as a single performance obligation for providing integrated electric service. For contracts where energy and demand charges are considered separate performance obligations, energy and demand are each a distinct performance obligation under the series guidance and are satisfied as energy is delivered and stand-ready service is provided on a monthly basis. This service represents consumption over the billing period and revenue is recognized consistent with billings and unbilled estimates, which generally occur monthly. Contractual amounts owed are typically trued up annually based upon incurred costs in accordance with FERC published filings and the specific customer’s actual peak demand. Estimates of variable consideration related to potential additional billings or refunds owed are updated quarterly. The majority of wholesale revenues are full requirements contracts where the customers purchase the substantial majority of their energy needs and do not have a fixed quantity of contractually required energy or capacity. As such, related forecasted revenues are considered optional purchases. Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations: Remaining Performance Obligations (in millions) 2025 2026 2027 2028 2029 Thereafter Total Duke Energy Carolinas $ 12 $ 12 $ 12 $ 12 $ — $ — $ 48 Progress Energy 36 43 13 13 13 42 160 Duke Energy Progress 6 6 6 6 6 20 50 Duke Energy Florida 30 37 7 7 7 22 110 Duke Energy Indiana 17 17 15 5 — — 54 Revenues for block sales are recognized monthly as energy is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates. Gas Utilities and Infrastructure GU&I earns its revenue through retail and wholesale natural gas service through the transportation, distribution and sale of natural gas. Duke Energy generally provides retail and wholesale natural gas service customers with all natural gas load requirements. Additionally, while natural gas can be stored, substantially all natural gas provided by Duke Energy is consumed by customers simultaneously with receipt of delivery. Retail natural gas service is marketed throughout Duke Energy's natural gas service territory using published tariff rates. The tariff rates are established by regulators in Duke Energy's service territories. Each tariff, which is assigned to customers based on customer class, have multiple components, such as a commodity charge, demand charge, customer or monthly charge and transportation costs. Duke Energy considers each of these components to be aggregated into a single performance obligation for providing natural gas service. For contracts where Duke Energy provides all of the customer’s natural gas needs, the delivery of natural gas is considered a single performance obligation satisfied over time, and revenue is recognized monthly based on billings and unbilled estimates as service is provided and the commodity is consumed over the billing period. Additionally, natural gas service is typically at will and customers can cancel service at any time, without a substantive penalty. Duke Energy also adheres to applicable regulatory requirements to ensure the collectability of amounts billed and receivable and appropriate mitigating procedures are followed when necessary. Certain long-term individually negotiated contracts exist to provide natural gas service. These contracts are regulated and approved by state commissions. The negotiated contracts may have multiple components, including a natural gas and a demand charge, similar to retail natural gas contracts. Duke Energy considers each of these components to be a single performance obligation for providing natural gas service. This service represents consumption over the billing period, generally one month. Fixed capacity payments under long-term contracts for the GU&I segment include minimum margin contracts and supply arrangements with municipalities and power generation facilities. Revenues for related sales are recognized monthly as natural gas is delivered and stand-ready service is provided, consistent with invoiced amounts and unbilled estimates. Estimated remaining performance obligations are as follows: Remaining Performance Obligations (in millions) 2025 2026 2027 2028 2029 Thereafter Total Piedmont $ 64 $ 51 $ 49 $ 46 $ 44 $ 151 $ 405 Other The remainder of Duke Energy’s operations is presented as Other, which does not include material revenues from contracts with customers. Disaggregated Revenues For the EU&I and GU&I segments, revenue by customer class is most meaningful to Duke Energy as each respective customer class collectively represents unique customer expectations of service, generally has different energy and demand requirements, and operates under tailored, regulatory approved pricing structures. Additionally, each customer class is impacted differently by weather and a variety of economic factors including the level of population growth, economic investment, employment levels, and regulatory activities in each of Duke Energy’s jurisdictions. As such, analyzing revenues disaggregated by customer class allows Duke Energy to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Disaggregated revenues are presented as follows: Year Ended December 31, 2024 Duke Duke Duke Duke Duke (in millions) Duke Energy Progress Energy Energy Energy Energy By market or type of customer Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Electric Utilities and Infrastructure Residential $ 12,901 $ 4,150 $ 6,592 $ 2,872 $ 3,720 $ 1,009 $ 1,149 $ — Commercial 8,207 3,080 3,718 1,754 1,964 590 818 — Industrial 3,427 1,488 1,066 742 324 149 724 — Wholesale 2,205 547 1,414 1,268 146 51 194 — Other revenues 1,029 350 674 343 331 89 107 — Total Electric Utilities and Infrastructure revenue from contracts with customers $ 27,769 $ 9,615 $ 13,464 $ 6,979 $ 6,485 $ 1,888 $ 2,992 $ — Gas Utilities and Infrastructure Residential $ 1,320 $ — $ — $ — $ — $ 427 $ — $ 893 Commercial 639 — — — — 153 — 486 Industrial 158 — — — — 33 — 125 Power Generation — — — — — — — 33 Other revenues 126 — — — — 26 — 100 Total Gas Utilities and Infrastructure revenue from contracts with customers $ 2,243 $ — $ — $ — $ — $ 639 $ — $ 1,637 Other Revenue from contracts with customers $ 38 $ — $ — $ — $ — $ — $ — $ — Total revenue from contracts with customers $ 30,050 $ 9,615 $ 13,464 $ 6,979 $ 6,485 $ 2,527 $ 2,992 $ 1,637 Other revenue sources (a) $ 307 $ 103 $ 169 $ 38 $ 110 $ 18 $ 48 $ 92 Total revenues $ 30,357 $ 9,718 $ 13,633 $ 7,017 $ 6,595 $ 2,545 $ 3,040 $ 1,729 Year Ended December 31, 2023 Duke Duke Duke Duke Duke (in millions) Duke Energy Progress Energy Energy Energy Energy By market or type of customer Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Electric Utilities and Infrastructure Residential $ 12,098 $ 3,409 $ 6,510 $ 2,540 $ 3,970 $ 947 $ 1,233 $ — Commercial 7,895 2,670 3,762 1,588 2,174 552 911 — Industrial 3,416 1,334 1,105 733 372 191 786 — Wholesale 2,175 492 1,388 1,240 148 46 248 — Other revenues 962 318 590 325 265 93 157 — Total Electric Utilities and Infrastructure revenue from contracts with customers $ 26,546 $ 8,223 $ 13,355 $ 6,426 $ 6,929 $ 1,829 $ 3,335 $ — Gas Utilities and Infrastructure Residential $ 1,226 $ — $ — $ — $ — $ 435 $ — $ 792 Commercial 605 — — — — 154 — 450 Industrial 141 — — — — 26 — 115 Power Generation — — — — — — — 31 Other revenues 119 — — — — 24 — 95 Total Gas Utilities and Infrastructure revenue from contracts with customers $ 2,091 $ — $ — $ — $ — $ 639 $ — $ 1,483 Other Revenue from contracts with customers $ 37 $ — $ — $ — $ — $ — $ — $ — Total revenue from contracts with customers $ 28,674 $ 8,223 $ 13,355 $ 6,426 $ 6,929 $ 2,468 $ 3,335 $ 1,483 Other revenue sources (a) $ 386 $ 65 $ 189 $ 62 $ 107 $ 39 $ 64 $ 145 Total revenues $ 29,060 $ 8,288 $ 13,544 $ 6,488 $ 7,036 $ 2,507 $ 3,399 $ 1,628 Year Ended December 31, 2022 Duke Duke Duke Duke Duke (in millions) Duke Energy Progress Energy Energy Energy Energy By market or type of customer Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Electric Utilities and Infrastructure Residential $ 11,377 $ 3,275 $ 5,812 $ 2,378 $ 3,434 $ 862 $ 1,430 $ — Commercial 7,356 2,396 3,396 1,480 1,916 517 1,049 — Industrial 3,504 1,251 1,095 770 325 202 956 — Wholesale 2,856 561 1,785 1,346 439 127 383 — Other revenues 795 372 994 768 226 61 19 — Total Electric Utilities and Infrastructure revenue from contracts with customers $ 25,888 $ 7,855 $ 13,082 $ 6,742 $ 6,340 $ 1,769 $ 3,837 $ — Gas Utilities and Infrastructure Residential $ 1,462 $ — $ — $ — $ — $ 488 $ — $ 974 Commercial 765 — — — — 180 — 585 Industrial 170 — — — — 24 — 144 Power Generation — — — — — — — 94 Other revenues 360 — — — — 25 — 271 Total Gas Utilities and Infrastructure revenue from contracts with customers $ 2,757 $ — $ — $ — $ — $ 717 $ — $ 2,068 Other Revenue from contracts with customers $ 30 $ — $ — $ — $ — $ — $ — $ — Total revenue from contracts with customers $ 28,675 $ 7,855 $ 13,082 $ 6,742 $ 6,340 $ 2,486 $ 3,837 $ 2,068 Other revenue sources (a) $ 93 $ 2 $ 43 $ 11 $ 13 $ 28 $ 85 $ 56 Total revenues $ 28,768 $ 7,857 $ 13,125 $ 6,753 $ 6,353 $ 2,514 $ 3,922 $ 2,124 (a) Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues. The following table presents the reserve for credit losses for trade and other receivables. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Balance at December 31, 2021 $ 121 $ 42 $ 36 $ 21 $ 16 $ 4 $ 3 $ 15 Write-Offs (158) (73) (70) (36) (34) — — (12) Credit Loss Expense 160 40 72 17 55 2 1 11 Other Adjustments 93 59 43 42 (1) — — — Balance at December 31, 2022 $ 216 $ 68 $ 81 $ 44 $ 36 $ 6 $ 4 $ 14 Write-Offs (164) (71) (84) (41) (42) — — (10) Credit Loss Expense 101 35 48 12 37 3 1 7 Other Adjustments 52 24 29 29 — — — — Balance at December 31, 2023 $ 205 $ 56 $ 74 $ 44 $ 31 $ 9 $ 5 $ 11 Write-Offs (132) (55) (73) (45) (28) — — (4) Credit Loss Expense 98 39 51 25 26 3 2 3 Other Adjustments 38 29 21 20 — 31 8 — Balance at December 31, 2024 $ 209 $ 69 $ 73 $ 44 $ 29 $ 43 $ 15 $ 10

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Stockholders' Equity	STOCKHOLDERS' EQUITY Basic EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as equity forward sale agreements or convertible debt, were exercised or settled. Duke Energy applies the if-converted method for calculating any potential dilutive effect of the conversion of the outstanding convertible notes on diluted EPS, if applicable. Duke Energy’s participating securities are RSUs that are entitled to dividends declared on Duke Energy common stock during the RSUs vesting periods. Dividends declared on preferred stock are recorded on the Consolidated Statements of Operations as a reduction of net income to arrive at net income available to Duke Energy common stockholders. Dividends accumulated on preferred stock are an adjustment to net income used in the calculation of basic and diluted EPS. The following table presents Duke Energy’s basic and diluted EPS calculations, the weighted average number of common shares outstanding and common and preferred share dividends declared. Years Ended December 31, (in millions, except per share amounts) 2024 2023 2022 Net Income available to Duke Energy common stockholders $ 4,402 $ 2,735 $ 2,444 Less: Income (Loss) from discontinued operations attributable to Duke Energy common stockholders 7 (1,391) (1,215) Accumulated preferred stock dividends adjustment 14 — — Less: Impact of participating securities 6 6 2 Income from continuing operations available to Duke Energy common stockholders $ 4,403 $ 4,120 $ 3,657 Income (Loss) from discontinued operations, net of tax $ 10 $ (1,455) $ (1,323) Add: (Income) Loss attributable to NCI (3) 64 108 Income (Loss) from discontinued operations attributable to Duke Energy common stockholders $ 7 $ (1,391) $ (1,215) Weighted average common shares outstanding – basic and diluted 772 771 770 EPS from continuing operations available to Duke Energy common stockholders Basic and Diluted (a) $ 5.70 $ 5.35 $ 4.74 Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders Basic and Diluted (a) $ 0.01 $ (1.81) $ (1.57) Potentially dilutive items excluded from the calculation (b) 2 2 2 Dividends declared per common share $ 4.14 $ 4.06 $ 3.98 Dividends declared on Series A preferred stock per depositary share (c) $ 1.437 $ 1.437 $ 1.437 Dividends declared on Series B preferred stock per share (d) $ 48.750 $ 48.750 $ 48.750 (a) For the periods presented subsequent to issuance in April 2023, the convertible notes were excluded from the calculations of diluted EPS because the effect was antidilutive. (b) Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met. (c) 5.75% Series A Cumulative Redeemable Perpetual Preferred Stock dividends are payable quarterly in arrears on the 16th day of March, June, September and December. The preferred stock has a $25 liquidation preference per depositary share. (d) 4.875% Series B Fixed-Rate Reset Cumulative Redeemable Perpetual Preferred Stock dividends were payable semiannually in arrears on the 16th day of March and September. The preferred stock was redeemed on September 16, 2024. Common Stock In November 2022, Duke Energy filed a prospectus supplement and executed an Equity Distribution Agreement (EDA) under which it may sell up to $1.5 billion of its common stock through an ATM offering program, including an equity forward sales component. Under the terms of the EDA, Duke Energy may issue and sell shares of common stock through September 2025. The following table shows ATM equity issuances pursuant to forward contracts executed during the year ended December 31, 2024. Tranche Shares Priced Initial Forward Price 1 802,371 $ 92.77 2 729,674 $ 101.10 3 737,280 $ 100.99 4 662,266 $ 111.45 Total 2,931,591 In December 2024, Duke Energy physically settled the equity forwards by delivering approximately 2.9 million shares of common stock in exchange for net cash proceeds of $297 million. Additionally, in December 2024, a fifth and final tranche of ATM equity issuances delivered 671,216 shares of common stock in exchange for net cash proceeds of $74 million, resulting in a total of 3.6 million shares of common stock issued in exchange for total cash proceeds of $371 million for the year ended December 31, 2024. Preferred Stock On September 16, 2024, Duke Energy redeemed all 1 million outstanding shares of Series B Preferred Stock for a redemption price of $1,000 per share or $1 billion in total. Following the redemption, dividends ceased to accrue on the shares of Series B Preferred Stock, shares of the Series B Preferred Stock were no longer deemed outstanding and all rights of the holders of such shares of Series B Preferred Stock terminated. In conjunction with the redemption, Duke Energy recorded $16 million in preferred stock redemption costs, calculated as the difference of $11 million between the carrying value on the redemption date of the Series B Preferred Stock and the total amount of consideration paid to redeem, and including the recognition of an excise tax liability under the IRA of $5 million. The preferred stock redemption costs were recorded as a reduction to Retained earnings on Duke Energy Corporation's Consolidated Balance Sheets during the year ended December 31, 2024. The Series A Preferred Stock has no maturity or mandatory redemption date, is not redeemable at the option of the holders and Duke E nergy may call the preferred stock, in whole or in part, at any time at a redemption price of $25 per depositary share. Duke Energy is also required to redeem all accumulated and unpaid dividends if the call option is exercised. Dividends issued on its Series A Preferred Stock are subject to approval by the Board of Directors. However, the deferral of dividend payments on the preferred stock prohibits the declaration of common stock dividends. The Series A Preferred Stock rank, with respect to dividends and distributions upon liquidation or dissolution: • senior to Common Stock and to each other class or series of capital stock established after the original issue date of the Series A Preferred Stock that is expressly made subordinated to the Series A Preferred Stock; • on a parity with any class or series of capital stock established after the original issue date of the Series A Preferred Stock that is not expressly made senior or subordinated to the Series A Preferred Stock; • junior to any class or series of capital stock established after the original issue date of the Series A Preferred Stock that is expressly made senior to the Series A Preferred Stock; • junior to all existing and future indebtedness (including indebtedness outstanding under Duke Energy's credit facilities, unsecured senior notes, junior subordinated debentures and commercial paper) and other liabilities with respect to assets available to satisfy claims against Duke Energy; and • structurally subordinated to existing and future indebtedness and other liabilities of Duke Energy's subsidiaries and future preferred stock of subsidiaries. Holders of Series A Preferred Stock have no voting rights with respect to matters that generally require the approval of voting stockholders. The limited voting rights of holders of Series A Preferred Stock include the right to vote as a single class, respectively, on certain matters that may affect the preference or special rights of the preferred stock, except in the instance that Duke Energy elects to defer the payment of dividends for a total of six quarterly full dividend periods for Series A Preferred Stock. If dividends are deferred for a cumulative total of six quarterly full dividend periods for Series A Preferred Stock, whether or not for consecutive dividend periods, holders of the preferred stock have the right to elect two additional Board members to the Board of Directors.

Severance

Severance	12 Months Ended
	Dec. 31, 2024
Restructuring and Related Activities [Abstract]
Severance	SEVERANCE During 2023, as Duke Energy transitioned from the foundational work of energy transition strategy planning to the launch of the largest power generation build period in its history, it streamlined certain functions and changed how it was structured and staffed to ensure the resulting organization reflected best-in-class standards, was optimally aligned with its jurisdictions, and was best positioned to serve its customers, stakeholders and investors. As a result, Duke Energy extended involuntary severance benefits to certain employees in specific areas as a part of its organizational optimization. For the year ended December 31, 2023, Duke Energy recorded severance charges of approximately $97 million within Operations, maintenance and other During 2022, Duke Energy identified opportunities to eliminate work and create sustainable savings through a workload reduction initiative with a focus on process improvement through digital technology, governance simplification and elimination of low-value work. As a result, Duke Energy extended involuntary severance benefits to certain employees in specific areas as a part of this initiative. The following table presents the direct and allocated severance and related charges accrued for 341 employees in 2024, 682 employees in 2023 and 233 employees in 2022 by the Duke Energy Registrants within Operation, maintenance and other on the Consolidated Statements of Operations. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Year Ended December 31, 2024 (a)(b) $ (28) $ (11) $ (9) $ (5) $ (4) $ (2) $ (4) $ (2) Year Ended December 31, 2023 (c)(d)(e) 102 53 33 21 12 3 6 4 Year Ended December 31, 2022 (f)(g) 65 40 20 17 3 1 2 2 (a) Includes adjustments associated with 2022 severance charges of approximately $(1) million and $(1) million for Duke Energy and Duke Energy Carolinas, respectively. (b) Includes adjustments associated with 2023 severance charges of approximately $(27) million, $(11) million, $(9) million, $(5) million, $(4) million, $(2) million, $(4) million and $(2) million for Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont, respectively. (c) Includes amortization of deferred severance charges of approximately $22 million, $14 million, $8 million and $8 million for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. (d) Includes adjustments associated with 2021 severance charges of approximately $(6) million, $(2) million, $(3) million, $(2) million, $(1) million and $(1) million for Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively. (e) Includes adjustments associated with 2022 severance charges of approximately $(14) million, $(7) million, $(5) million, $(3) million, $(2) million, $(1) million and $(1) million for Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana, respectively. (f) Includes amortization of deferred severance charges of approximately $33 million, $22 million, $11 million and $11 million for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. (g) Includes adjustments associated with 2021 severance charges of approximately $(19) million, $(6) million, $(8) million, $(4) million, $(4) million, $(1) million, $(2) million and $(1) million for Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont, respectively. The table below presents the severance liability for past and ongoing severance plans including the plans described above. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Balance at December 31, 2022 $ 64 $ 15 $ 6 $ 4 $ 2 $ — $ — $ 1 Provision/Adjustments 80 30 13 6 7 1 4 2 Cash Reductions (42) (10) (3) (2) (1) — — (1) Balance at December 31, 2023 $ 102 $ 35 $ 16 $ 8 $ 8 $ 1 $ 4 $ 2 Provision/Adjustments (28) (6) (3) (1) (2) (1) (3) (1) Cash Reductions (55) (21) (11) (6) (5) — (1) (1) Balance at December 31, 2024 $ 19 $ 8 $ 2 $ 1 $ 1 $ — $ — $ —

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	STOCK-BASED COMPENSATION The Duke Energy Corporation 2023 Long-Term Incentive Plan (the 2023 Plan) provides for the grant of stock-based compensation awards to employees and outside directors. The 2023 Plan superseded the Duke Energy Corporation 2015 Long-Term Incentive Plan (the 2015 Plan). No additional grants will be made from the 2015 Plan. The 2023 Plan reserves 15 million shares of common stock for issuance. Duke Energy has historically issued new shares upon exercising or vesting of share-based awards. However, Duke Energy may use a combination of new share issuances and open market repurchases for share-based awards that are exercised or vest in the future. Duke Energy has not determined with certainty the amount of such new share issuances or open market repurchases. The following table summarizes the total expense recognized by the Duke Energy Registrants, net of tax, for stock-based compensation. Years Ended December 31, (in millions) 2024 2023 2022 Duke Energy $ 70 $ 71 $ 74 Duke Energy Carolinas 25 25 27 Progress Energy 28 28 27 Duke Energy Progress 17 17 17 Duke Energy Florida 11 11 10 Duke Energy Ohio 5 5 5 Duke Energy Indiana 7 7 7 Piedmont 4 4 4 Duke Energy's pretax stock-based compensation costs, the tax benefit associated with stock-based compensation expense and stock-based compensation costs capitalized are included in the following table. Years Ended December 31, (in millions) 2024 2023 2022 RSU awards $ 49 $ 54 $ 58 Performance awards 47 43 42 Pretax stock-based compensation cost $ 96 $ 97 $ 100 Stock-based compensation costs capitalized 6 6 5 Stock-based compensation expense $ 90 $ 91 $ 95 Tax benefit associated with stock-based compensation expense $ 20 $ 20 $ 21 RESTRICTED STOCK UNIT AWARDS RSU awards generally vest over periods from immediate to three years. Fair value amounts are based on the market price of Duke Energy's common stock on the grant date. The following table includes information related to RSU awards. Years Ended December 31, 2024 2023 2022 Shares granted (in thousands) 598 670 654 Fair value (in millions) $ 59 $ 65 $ 64 The following table summarizes information about RSU awards outstanding. Weighted Average Shares Grant Date Fair Value (in thousands) (per share) Outstanding at December 31, 2023 1,115 $ 96 Granted 598 99 Vested (581) 95 Forfeited (73) 98 Outstanding at December 31, 2024 1,059 98 RSU awards expected to vest 1,014 98 The total grant date fair value of shares vested during the years ended December 31, 2024, 2023 and 2022, was $55 million, $52 million and $49 million, respectively. At December 31, 2024, Duke Energy had $37 million of unrecognized compensation cost, which is expected to be recognized over a weighted average period of 24 months. PERFORMANCE AWARDS Stock-based performance awards generally vest after three years to the extent performance targets are met. The actual number of shares issued will range from zero to 200% of target shares, depending on the level of performance achieved. Performance awards contain performance conditions and a market condition. The performance conditions are based on Duke Energy's cumulative adjusted EPS and total incident case rate (total incident case rate is one of our key employee safety metrics). The market condition is based on TSR of Duke Energy relative to a predefined peer group. Relative TSR is valued using a path-dependent model that incorporates expected relative TSR into the fair value determination of Duke Energy’s performance-based share awards. The model uses three-year historical volatilities and correlations for all companies in the predefined peer group, including Duke Energy, to simulate Duke Energy’s relative TSR as of the end of the performance period. For each simulation, Duke Energy’s relative TSR associated with the simulated stock price at the end of the performance period plus expected dividends within the period results in a value per share for the award portfolio. The average of these simulations is the expected portfolio value per share. Actual life to date results of Duke Energy’s relative TSR for each grant are incorporated within the model. For performance awards granted in 2024, the model used a risk-free interest rate of 4.49%, which reflects the yield on three-year Treasury bonds as of the grant date, and an expected volatility of 18.7% based on Duke Energy's historical volatility over three years using daily stock prices. The following table includes information related to stock-based performance awards. Years Ended December 31, 2024 2023 2022 Shares granted assuming target performance (in thousands) 440 422 408 Fair value (in millions) $ 42 $ 42 $ 40 The following table summarizes information about stock-based performance awards outstanding and assumes payout at the target level. Weighted Average Shares Grant Date Fair Value (in thousands) (per share) Outstanding at December 31, 2023 1,115 $ 96 Granted 440 95 Vested (338) 88 Forfeited (30) 96 Outstanding at December 31, 2024 1,187 98 Stock-based performance awards expected to vest 1,156 98 The total grant date fair value of shares vested during the years ended December 31, 2024, 2023 and 2022, was $30 million, $31 million and $25 million, respectively. At December 31, 2024, Duke Energy had $24 million of unrecognized compensation cost, which is expected to be recognized over a weighted average period of 22 months.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2024
Retirement Benefits [Abstract]
Employee Benefit Plans	EMPLOYEE BENEFIT PLANS DEFINED BENEFIT RETIREMENT PLANS Duke Energy and certain subsidiaries maintain, and the Subsidiary Registrants participate in, qualified, non-contributory defined benefit retirement plans, which consist of the Duke Energy Retirement Cash Balance Plan (RCBP) and the Duke Energy Legacy Pension Plan (DELPP) These plans cover most employees using a cash balance formula. Under a cash balance formula, a plan participant accumulates a retirement benefit consisting of pay credits based upon a percentage of current eligible earnings, age or age and years of service and interest credits. Certain employees are eligible for benefits that use a final average earnings formula. Under these final average earnings formulas, a plan participant accumulates a retirement benefit equal to the sum of percentages of their (i) highest three Duke Energy uses a December 31 measurement date for its defined benefit retirement plan assets and obligations. Actuarial gains experienced by the defined benefit retirement plans in remeasuring plan obligations as of December 31, 2024, were primarily attributable to the increase in the discount rate used to measure plan obligations. Actuarial losses experienced by the defined benefit retirement plans in remeasuring plan assets as of December 31, 2024, were primarily attributable to actual investment performance that was less than expected investment performance. Actuarial gains experienced by the defined benefit retirement plans in remeasuring plan assets on December 31, 2023, were primarily attributable to actual investment performance that exceeded expected investment performance. Actuarial losses experienced by the defined benefit retirement plans in remeasuring plan obligations as of December 31, 2023, were primarily attributable to the decrease in the discount rate used to measure plan obligations. As a result of the application of settlement accounting due to total lump-sum benefit payments exceeding the settlement threshold (defined as the sum of service cost and interest cost on projected benefit obligation components of net periodic benefit costs) for one of its qualified pension plans, Duke Energy recognized settlement charges of $72 million, of which $60 million was recorded to Regulatory Assets within Other Noncurrent Assets on the Consolidated Balance Sheets and $12 million was recorded to Other income and expenses, net, within the Consolidated Statement of Operations as of, and for the year ended, December 31, 2024. No settlement charges were recorded in 2023. Duke Energy recognized settlement charges of $117 million, of which $95 million was recorded to Regulatory Assets within Other Noncurrent Assets on the Consolidated Balance Sheets and $22 million was recorded to Other income and expenses, net, within the Consolidated Statement of Operations as of, and for the year ended, December 31, 2022. Settlement charges recognized by the Subsidiary Registrants as of December 31, 2024, which represents amounts allocated by Duke Energy for employees of the Subsidiary Registrants and allocated charges for their proportionate share of settlement charges for employees of Duke Energy's shared service affiliate, and recorded to Regulatory Assets within Other Noncurrent Assets on the Consolidated Balance Sheets were $31 million for Duke Energy Carolinas, $23 million for Progress Energy, $16 million for Duke Energy Progress, $7 million for Duke Energy Florida, $3 million for Duke Energy Indiana, and $4 million for Piedmont. Settlement charges recognized by the Subsidiary Registrants as of December 31, 2024, recorded to Other income and expenses, net, within the 2024 Consolidated Statements of Operations were $3 million for Duke Energy Carolinas, $5 million for Progress Energy, $5 million for Duke Energy Progress, $2 million for Duke Energy Ohio and $1 million for Piedmont. Settlement charges recognized by the Subsidiary Registrants as of December 31, 2022, which represent amounts allocated by Duke Energy for employees of the Subsidiary Registrants and allocated charges for their proportionate share of settlement charges for employees of Duke Energy's shared services affiliate, and recorded to Regulatory Assets within Other Noncurrent Assets on the Consolidated Balance Sheets were $35 million for Duke Energy Carolinas, $23 million for Progress Energy, $16 million for Duke Energy Progress, $7 million for Duke Energy Florida, $8 million for Duke Energy Indiana and $29 million for Piedmont. Settlement charges recognized by the Subsidiary Registrants as of December 31, 2022, recorded to Other income and expenses, net, within the 2022 Consolidated Statements of Operations were $3 million for Duke Energy Carolinas, $5 million for Progress Energy, $5 million for Duke Energy Progress, $1 million for Duke Energy Florida, $5 million for Duke Energy Ohio and $6 million for Piedmont. The settlement charges reflect the recognition of a pro-rata portion of previously unrecognized actuarial losses, equal to the percentage of reduction in the projected benefit obligation resulting from total lump-sum benefit payments. Settlement charges recognized as a regulatory asset within Other Noncurrent Assets on the Consolidated Balance Sheets are amortized over the average remaining service period for participants in the plan. Amortization of settlement charges is disclosed in the tables below as a component of net periodic pension costs. Effective December 31, 2022, Duke Energy Florida changed its method for calculating the market related value of plan assets (MRVA) from the fair value method to a method that recognizes changes in fair value of its plan assets over a five-year period. This represents a change in regulatory treatment that will serve to mitigate the impact of market volatility on retail customer rates, resulting in the timing of net periodic pension cost recognition that is more consistent with treatment of the related cost in the ratemaking process. The three-year retrospective impact of this method change of $24 million was recognized by Duke Energy, Progress Energy and Duke Energy Florida, respectively, and was recorded to Other income and expenses, net, within the Consolidated Statement of Operations as of December 31, 2022, and has been disclosed in the tables below as a component of net periodic pension costs. Net periodic benefit costs disclosed in the tables below represent the cost of the respective benefit plan for the periods presented prior to capitalization of amounts reflected as Net property, plant and equipment, on the Consolidated Balance Sheets. Only the service cost component of net periodic benefit costs is eligible to be capitalized. The remaining non-capitalized portions of net periodic benefit costs are classified as either: (1) service cost, which is recorded in Operations, maintenance and other on the Consolidated Statements of Operations; or as (2) components of non-service cost, which is recorded in Other income and expenses, net on the Consolidated Statements of Operations. Amounts presented in the tables below for the Subsidiary Registrants represent the amounts of pension and other post-retirement benefit cost allocated by Duke Energy for employees of the Subsidiary Registrants. Additionally, the Consolidated Statements of Operations of the Subsidiary Registrants also include allocated net periodic benefit costs for their proportionate share of pension and post-retirement benefit cost for employees of Duke Energy’s shared services affiliate that provide support to the Subsidiary Registrants. However, in the tables below, these amounts are only presented within the Duke Energy column (except for amortization of settlement charges). These allocated amounts are included in the governance and shared service costs discussed in Note 14. Duke Energy’s policy is to fund amounts on an actuarial basis to provide assets sufficient to meet benefit payments to be paid to plan participants. The following table includes information related to the Duke Energy Registrants’ contributions to its qualified defined benefit pension plans. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Contributions Made: 2024 $ 100 $ 26 $ 23 $ 14 $ 9 $ 5 $ 8 $ 3 2023 100 26 22 13 9 5 8 3 2022 58 15 13 8 5 3 5 2 QUALIFIED PENSION PLANS Components of Net Periodic Pension Costs Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 114 $ 37 $ 32 $ 19 $ 13 $ 3 $ 6 $ 4 Interest cost on projected benefit obligation 325 78 103 47 56 17 26 9 Expected return on plan assets (613) (161) (217) (99) (116) (25) (42) (20) Amortization of actuarial loss 36 8 10 6 5 1 4 3 Amortization of prior service credit (13) (1) — — — — (2) (7) Amortization of settlement charges (c) 32 12 10 9 2 2 2 5 Net periodic pension costs (a)(b) $ (119) $ (27) $ (62) $ (18) $ (40) $ (2) $ (6) $ (6) Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 117 $ 38 $ 33 $ 19 $ 13 $ 3 $ 6 $ 4 Interest cost on projected benefit obligation 344 84 107 49 57 18 27 9 Expected return on plan assets (588) (160) (198) (93) (104) (24) (40) (20) Amortization of actuarial loss 10 2 4 2 2 — 2 — Amortization of prior service credit (14) (1) — — — — (2) (7) Amortization of settlement charges 19 9 5 3 1 — 1 4 Net periodic pension costs (a)(b) $ (112) $ (28) $ (49) $ (20) $ (31) $ (3) $ (6) $ (10) Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 152 $ 48 $ 43 $ 25 $ 17 $ 4 $ 9 $ 5 Interest cost on projected benefit obligation 249 59 77 35 41 13 20 8 Expected return on plan assets (558) (152) (183) (88) (94) (23) (37) (24) Amortization of actuarial loss 81 16 23 12 12 4 9 5 Amortization of prior service credit (18) (3) — — — — (2) (7) Amortization of settlement charges (c) 32 9 8 7 1 5 1 7 MRVA method change 24 — 24 — 24 — — — Net periodic pension costs (a)(b) $ (38) $ (23) $ (8) $ (9) $ 1 $ 3 $ — $ (6) (a) Duke Energy amounts exclude $2 million, $3 million and $3 million for the years ended December 2024, 2023 and 2022, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006. (b) Duke Energy Ohio amounts exclude $1 million, $1 million and $1 million for the years ended December 2024, 2023 and 2022, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006. (c) Includes settlement charges not deferred as a regulatory asset. Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Regulatory assets, net increase $ 147 $ 39 $ 33 $ 1 $ 31 $ 11 $ 6 $ 16 Accumulated other comprehensive loss (income) Deferred income tax benefit $ 3 $ — $ — $ — $ — $ — $ — $ — Amortization of prior year service credit 1 — — — — — — — Amortization of prior year actuarial losses (12) — 1 — — — (2) — Net amount recognized in accumulated other comprehensive income $ (8) $ — $ 1 $ — $ — $ — $ (2) $ — Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Regulatory assets, net increase (decrease) $ 5 $ (14) $ 8 $ — $ 9 $ (3) $ (2) $ 13 Accumulated other comprehensive loss (income) Amortization of prior year actuarial losses (2) — — — — — — — Net amount recognized in accumulated other comprehensive income $ (2) $ — $ — $ — $ — $ — $ — $ — Reconciliation of Funded Status to Net Amount Recognized Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Change in Projected Benefit Obligation Obligation at prior measurement date $ 6,299 $ 1,514 $ 1,990 $ 911 $ 1,069 $ 325 $ 496 $ 175 Service cost 107 36 30 18 12 3 6 4 Interest cost 325 78 103 47 56 17 26 9 Actuarial (gain)/loss (106) (13) (50) (27) (22) (3) (16) 5 Benefits paid (645) (177) (198) (111) (88) (33) (41) (12) Transfers — 6 — — — — — — Obligation at measurement date $ 5,980 $ 1,444 $ 1,875 $ 838 $ 1,027 $ 309 $ 471 $ 181 Accumulated Benefit Obligation at measurement date $ 5,948 $ 1,444 $ 1,861 $ 838 $ 1,013 $ 304 $ 466 $ 181 Change in Fair Value of Plan Assets Plan assets at prior measurement date $ 7,162 $ 1,853 $ 2,453 $ 1,120 $ 1,316 $ 326 $ 514 $ 213 Employer contributions 100 26 23 14 9 5 8 3 Actual return on plan assets 270 73 98 46 53 11 17 10 Benefits paid (645) (177) (198) (111) (88) (33) (41) (12) Transfers — 6 — — — — — — Plan assets at measurement date $ 6,887 $ 1,781 $ 2,376 $ 1,069 $ 1,290 $ 309 $ 498 $ 214 Funded status of plan $ 907 $ 337 $ 501 $ 231 $ 263 $ — $ 27 $ 33 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Change in Projected Benefit Obligation Obligation at prior measurement date $ 6,358 $ 1,554 $ 1,975 $ 909 $ 1,055 $ 333 $ 499 $ 170 Service cost 110 36 30 18 12 3 6 3 Interest cost 344 84 107 49 57 18 27 9 Actuarial loss 94 11 47 18 29 2 4 9 Benefits paid (607) (177) (159) (80) (78) (31) (40) (16) Transfers — 6 (10) (3) (6) — — — Obligation at measurement date $ 6,299 $ 1,514 $ 1,990 $ 911 $ 1,069 $ 325 $ 496 $ 175 Accumulated Benefit Obligation at measurement date $ 6,267 $ 1,517 $ 1,975 $ 912 $ 1,053 $ 317 $ 494 $ 176 Change in Fair Value of Plan Assets Plan assets at prior measurement date $ 6,993 $ 1,815 $ 2,371 $ 1,083 $ 1,271 $ 323 $ 501 $ 203 Employer contributions 100 26 22 13 9 5 8 3 Actual return on plan assets 676 183 229 107 120 29 45 23 Benefits paid (607) (177) (159) (80) (78) (31) (40) (16) Transfers — 6 (10) (3) (6) — — — Plan assets at measurement date $ 7,162 $ 1,853 $ 2,453 $ 1,120 $ 1,316 $ 326 $ 514 $ 213 Funded status of plan $ 863 $ 339 $ 463 $ 209 $ 247 $ 1 $ 18 $ 38 Amounts Recognized in the Consolidated Balance Sheets December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Prefunded pension (a) $ 907 $ 337 $ 501 $ 231 $ 263 $ 74 $ 101 $ 33 Noncurrent pension liability (b) $ — $ — $ — $ — $ — $ 74 $ 74 $ — Net asset (liability) recognized $ 907 $ 337 $ 501 $ 231 $ 263 $ — $ 27 $ 33 Regulatory assets $ 2,168 $ 570 $ 711 $ 354 $ 356 $ 100 $ 182 $ 113 Accumulated other comprehensive income (loss) Deferred income tax benefit $ (24) $ — $ (1) $ — $ — $ — $ — $ — Net actuarial loss 115 — 4 — — — — — Net amounts recognized in accumulated other comprehensive income $ 91 $ — $ 3 $ — $ — $ — $ — $ — December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Prefunded pension (a) $ 863 $ 339 $ 463 $ 209 $ 247 $ 74 $ 105 $ 38 Noncurrent pension liability (b) $ — $ — $ — $ — $ — $ 73 $ 87 $ — Net asset (liability) recognized $ 863 $ 339 $ 463 $ 209 $ 247 $ 1 $ 18 $ 38 Regulatory assets $ 2,021 $ 531 $ 678 $ 353 $ 325 $ 89 $ 176 $ 97 Accumulated other comprehensive (income) loss Deferred income tax benefit $ (27) $ — $ (1) $ — $ — $ — $ — $ — Prior service credit (1) — — — — — — — Net actuarial loss 127 — 3 — — — 2 — Net amounts recognized in accumulated other comprehensive loss $ 99 $ — $ 2 $ — $ — $ — $ 2 $ — (a) Included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets. (b) Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets. Information for Plans with Accumulated Benefit Obligation in Excess of Plan Assets December 31, 2024 Duke Duke Energy Energy (in millions) Ohio Indiana Projected benefit obligation $ 106 $ 203 Accumulated benefit obligation 101 197 Fair value of plan assets 32 128 December 31, 2023 Duke Duke Energy Energy (in millions) Ohio Indiana Projected benefit obligation $ 105 $ 208 Accumulated benefit obligation 100 203 Fair value of plan assets 31 121 Assumptions Used for Pension Benefits Accounting The discount rate used to determine the current year pension obligation and following year’s pension expense is based on a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high-quality corporate bonds that generate sufficient cash flow to provide for projected benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value of the bonds selected. The RCBP contains a mostly active participant population while the DELPP contains a mostly inactive participant population. The average remaining service period for RCBP participants is nine years and the average life expectancy of DELPP participants is 15 years. Unrecognized net actuarial gains/losses and prior service credit are amortized over 12 years for Duke Energy and Duke Energy Florida, 14 years for Duke Energy Ohio, 13 years for Duke Energy Indiana, 11 years for Duke Energy Carolinas, Progress Energy and Duke Energy Progress and nine years for Piedmont. The following tables present the assumptions or range of assumptions used for pension benefit accounting. December 31, 2024 2023 2022 Benefit Obligations Discount rate 5.70% 5.40% 5.60% Interest crediting rate 4.78% 4.15% 4.35% Salary increase 3.50 % – 4.00% 3.50 % – 4.00% 3.50 % – 4.00% Net Periodic Benefit Cost Discount rate 5.00 % – 5.40% 5.60% 2.90 % – 5.70% Interest crediting rate 4.15% 4.35% 4.00% Salary increase 3.50 % – 4.00% 3.50 % – 4.00% 3.50 % – 4.00% Expected long-term rate of return on plan assets 8.50 % – 7.00 % 6.50 – 8.25% 6.50% Expected Benefit Payments Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Years ending December 31, 2025 $ 628 $ 173 $ 183 $ 98 $ 84 $ 31 $ 43 $ 19 2026 606 161 179 91 87 30 42 18 2027 586 153 175 87 87 29 42 17 2028 572 149 173 85 87 29 41 17 2029 546 138 167 79 87 29 42 16 2030-2034 2,407 567 762 338 420 129 197 73 NON-QUALIFIED PENSION PLANS The accumulated benefit obligation, which equals the projected benefit obligation for non-qualified pension plans, was $203 million for Duke Energy, $8 million for Duke Energy Carolinas, $72 million for Progress Energy, $22 million for Duke Energy Progress, $27 million for Duke Energy Florida, $2 million for Duke Energy Ohio, $1 million for Duke Energy Indiana and $2 million for Piedmont as of December 31, 2024. Employer contributions, which equal benefits paid for non-qualified pension plans, were $30 million for Duke Energy, $2 million for Duke Energy Carolinas, $8 million for Progress Energy, $3 million for Duke Energy Progress and $3 million for Duke Energy Florida for the year ended December 31, 2024. Employer contributions were not material for Duke Energy Ohio, Duke Energy Indiana or Piedmont for the year ended December 31, 2024. Net periodic pension costs for non-qualified pension plans were not material for the years ended December 31, 2024, 2023 or 2022. OTHER POST-RETIREMENT BENEFIT PLANS Duke Energy provides, and the Subsidiary Registrants participate in, some health care and life insurance benefits for retired employees on a contributory and non-contributory basis. Employees are eligible for these benefits if they have satisfied the applicable eligibility requirements (e.g., age and service) at retirement, as defined in the plans. The health care benefits include medical, dental, vision and prescription drug coverage and are subject to certain limitations, such as deductibles and copayments. Duke Energy did not make any prefunding contributions to its other post-retirement benefit plans during the years ended December 31, 2024, 2023 or 2022. Components of Net Periodic Other Post-Retirement Benefit Costs Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 2 $ — $ — $ — $ — $ — $ — $ — Interest cost on accumulated post-retirement benefit obligation 17 3 7 4 3 1 1 1 Expected return on plan assets (11) (8) — — — — — (2) Amortization of actuarial (gain) loss (6) (2) 8 6 2 (2) (4) — Amortization of prior service credit (21) (4) (11) (6) (5) — (5) — Net periodic post-retirement benefit costs (a)(b) $ (19) $ (11) $ 4 $ 4 $ — $ (1) $ (8) $ (1) Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 2 $ 1 $ — $ — $ — $ — $ — $ — Interest cost on accumulated post-retirement benefit obligation 22 5 9 5 4 1 1 1 Expected return on plan assets (11) (7) — — — — — (2) Amortization of actuarial (gain) loss (6) (3) 8 5 2 (2) (3) — Amortization of prior service credit (23) (5) (11) (6) (5) — (5) — Net periodic post-retirement benefit costs (a)(b) $ (16) $ (9) $ 6 $ 4 $ 1 $ (1) $ (7) $ (1) Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 3 $ 1 $ — $ — $ — $ — $ — $ — Interest cost on accumulated post-retirement benefit obligation 17 4 7 4 3 1 1 1 Expected return on plan assets (10) (6) — — — — — (2) Amortization of actuarial loss 2 — 1 1 1 — — — Amortization of prior service credit (8) (3) (2) (1) (1) — — (2) Net periodic post-retirement benefit costs (a)(b) $ 4 $ (4) $ 6 $ 4 $ 3 $ 1 $ 1 $ (3) (a) Duke Energy amounts exclude $4 million, $4 million and $4 million for the years ended December 2024, 2023 and 2022, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006. (b) Duke Energy Ohio amounts exclude $1 million, $1 million and $1 million for the years ended December 2024, 2023 and 2022, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006. Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets and Liabilities Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Regulatory assets, net (decrease) increase $ (42) $ (62) $ 23 $ 17 $ 5 $ (1) $ (3) $ — Regulatory liabilities, net (decrease) increase $ (76) $ (71) $ 12 $ 12 $ — $ (3) $ (12) $ — Accumulated other comprehensive (income) loss Amortization of prior year actuarial gain 1 — — — — — — — Net amount recognized in accumulated other comprehensive income $ 1 $ — $ — $ — $ — $ — $ — $ — Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Regulatory assets, net increase (decrease) $ 73 $ 79 $ (7) $ (5) $ — $ (2) $ (2) $ 1 Regulatory liabilities, net increase (decrease) $ 41 $ 62 $ — $ — $ — $ (4) $ (8) $ — Accumulated other comprehensive (income) loss Amortization of prior year service credit $ 1 $ — $ — $ — $ — $ — $ — $ — Amortization of prior year actuarial gain $ — $ — $ (1) $ — $ — $ — $ — $ — Net amount recognized in accumulated other comprehensive income $ 1 $ — $ (1) $ — $ — $ — $ — $ — Reconciliation of Funded Status to Accrued Other Post-Retirement Benefit Costs Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Change in Benefit Obligation Accumulated post-retirement benefit obligation at prior measurement date $ 347 $ 69 $ 146 $ 84 $ 60 $ 19 $ 24 $ 15 Service cost 2 — — — — — — — Interest cost 17 3 7 4 3 1 1 1 Plan participants' contributions 3 1 1 — — — — — Actuarial losses (gains) 2 (2) 7 5 3 — (2) — Benefits paid (37) (8) (15) (6) (6) (2) (3) (1) Accumulated post-retirement benefit obligation at measurement date $ 334 $ 63 $ 146 $ 87 $ 60 $ 18 $ 20 $ 15 Change in Fair Value of Plan Assets Plan assets at prior measurement date $ 156 $ 102 $ (1) $ (1) $ (1) $ 7 $ 3 $ 27 Actual return on plan assets 7 4 — — — — — 3 Benefits paid (37) (8) (15) (6) (6) (2) (3) (1) Tax refund 5 4 — — — — — — Employer contributions 27 4 14 7 7 2 — — Plan participants' contributions 3 1 1 — — — — — Plan assets at measurement date $ 161 $ 107 $ (1) $ — $ — $ 7 $ — $ 29 Funded status of plan $ (173) $ 44 $ (147) $ (87) $ (60) $ (11) $ (20) $ 14 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Change in Benefit Obligation Accumulated post-retirement benefit obligation at prior measurement date $ 437 $ 112 $ 168 $ 95 $ 69 $ 20 $ 30 $ 21 Service cost 2 1 — — — — — — Interest cost 22 5 9 5 4 1 1 1 Plan participants' contributions 4 1 1 1 1 — — — Actuarial (gains) losses (10) (2) (10) (6) (4) 1 (1) 1 Transfers (50) (34) — — — — — (6) Benefits paid (58) (14) (22) (11) (10) (3) (6) (2) Accumulated post-retirement benefit obligation at measurement date $ 347 $ 69 $ 146 $ 84 $ 60 $ 19 $ 24 $ 15 Change in Fair Value of Plan Assets Plan assets at prior measurement date $ 162 $ 105 $ — $ (2) $ (2) $ 7 $ 3 $ 31 401(h) asset transfers — (8) — — — — — — Actual return on plan assets 19 8 — — — 1 — 4 Benefits paid (58) (14) (22) (11) (10) (3) (6) (2) Transfers (13) 4 — — — — — (7) Employer contributions 42 6 20 11 10 2 6 1 Plan participants' contributions 4 1 1 1 1 — — — Plan assets at measurement date $ 156 $ 102 $ (1) $ (1) $ (1) $ 7 $ 3 $ 27 Funded status of plan $ (191) $ 33 $ (147) $ (85) $ (61) $ (12) $ (21) $ 12 Amounts Recognized in the Consolidated Balance Sheets December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Prefunded post-retirement benefit (a) $ — $ 44 $ — $ — $ — $ 1 $ — $ 14 Current post-retirement liability (b) 8 — 5 3 2 1 — — Noncurrent post-retirement liability (c) 165 — 142 84 58 11 20 — Net liability (asset) recognized $ 173 $ (44) $ 147 $ 87 $ 60 $ 11 $ 20 $ (14) Regulatory assets $ 81 $ 17 $ 62 $ 46 $ 16 $ 1 $ 20 $ 1 Regulatory liabilities $ 154 $ 35 $ 12 $ 12 $ — $ 14 $ 62 $ — Accumulated other comprehensive (income) loss Deferred income tax expense $ 3 $ — $ — $ — $ — $ — $ — $ — Net actuarial gain (12) — (1) — — — — — Net amounts recognized in accumulated other comprehensive income $ (9) $ — $ (1) $ — $ — $ — $ — $ — December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Prefunded post-retirement benefit (a) $ — $ 61 $ — $ — $ — $ 1 $ — $ 12 Current post-retirement liability (b) 12 3 5 3 2 1 — — Noncurrent post-retirement liability (c) 179 25 142 82 59 12 21 — Net liability (asset) recognized $ 191 $ (33) $ 147 $ 85 $ 61 $ 12 $ 21 $ (12) Regulatory assets $ 123 $ 79 $ 39 $ 29 $ 11 $ 2 $ 23 $ 1 Regulatory liabilities $ 230 $ 106 $ — $ — $ — $ 17 $ 74 $ — Accumulated other comprehensive (income) loss Deferred income tax expense $ 3 $ — $ — $ — $ — $ — $ — $ — Net actuarial gain (13) — (1) — — — — — Net amounts recognized in accumulated other comprehensive income $ (10) $ — $ (1) $ — $ — $ — $ — $ — (a) Included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets. (b) Included in Other within Current Liabilities on the Consolidated Balance Sheets. (c) Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets. Assumptions Used for Other Post-Retirement Benefits Accounting The discount rate used to determine the current year other post-retirement benefits obligation and following year’s other post-retirement benefits expense is based on a bond selection-settlement portfolio approach. This approach develops a discount rate by selecting a portfolio of high-quality corporate bonds that generate sufficient cash flow to provide for projected benefit payments of the plan. The selected bond portfolio is derived from a universe of non-callable corporate bonds rated Aa quality or higher. After the bond portfolio is selected, a single interest rate is determined that equates the present value of the plan’s projected benefit payments discounted at this rate with the market value of the bonds selected. The average remaining service period of active covered employees is seven years for Duke Energy, Duke Energy Carolinas and Duke Energy Florida, six years for Duke Energy Ohio, Duke Energy Indiana and Piedmont and five years for Progress Energy and Duke Energy Progress. The following tables present the assumptions used for other post-retirement benefits accounting. December 31, 2024 2023 2022 Benefit Obligations Discount rate 5.70 % 5.40 % 5.60 % Net Periodic Benefit Cost Discount rate 5.40 % 5.60 % 2.90 % Expected long-term rate of return on plan assets 6.50 % – 8.25 % 6.50 % – 8.25 % 6.50 % Assumed Health Care Cost Trend Rate December 31, 2024 2023 Health care cost trend rate assumed for next year – pre-65 trend 7.00 % 6.50 % Rate to which the cost trend is assumed to decline (the ultimate trend rate) 4.75 % 4.75 % Year that rate reaches ultimate trend 2034-2035 2031-2032 Expected Benefit Payments Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Years ending December 31, 2025 $ 52 $ 13 $ 18 $ 11 $ 8 $ 3 $ 4 $ 2 2026 45 11 16 10 7 3 3 2 2027 41 9 16 9 7 2 3 2 2028 38 8 15 9 6 2 3 2 2029 35 7 14 8 6 2 2 2 2030-2034 124 21 59 35 24 6 8 6 PLAN ASSETS Description and Allocations Duke Energy Corporation Master Retirement Trust Assets for both the qualified pension and other post-retirement benefits are maintained in the Duke Energy Corporation Master Retirement Trust. Approximately 98% of the Duke Energy Corporation Master Retirement Trust assets were allocated to qualified pension plans and approximately 2% were allocated to other post-retirement plans (comprised of 401(h) accounts), as of December 31, 2024, and 2023. The investment objective of the Duke Energy Corporation Master Retirement Trust is to invest in a diverse portfolio of assets that is expected to generate positive surplus return over time (i.e., asset growth greater than liability growth) subject to a prudent level of portfolio risk, for the purpose of enhancing the security of benefits for plan participants. As of December 31, 2024, Duke Energy assumes qualified pension and other post-retirement plan assets will generate a long-term rate of return of 8.50% for the RCBP pension and RCBP 401(h) account assets and 7.00% for the DELPP pension and DELPP 401(h) account assets. The expected long-term rate of return was developed using a weighted average calculation of expected returns based primarily on future expected returns across asset classes considering the use of active asset managers, where applicable. The asset allocation targets were set after considering the investment objective and the risk profile. Equity securities are held for their higher expected returns. Debt securities are primarily held to hedge the qualified pension plan. Return seeking debt securities, hedge funds and other global securities are held for diversification. Investments within asset classes are diversified to achieve broad market participation and reduce the impact of individual managers or investments. Effective January 1, 2025, the target asset allocation for the RCBP assets is 35% liability hedging and 65% return-seeking assets and the target asset allocation for the DELPP assets is 8

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Inflation Reduction Act In August 2022, the IRA was signed into law. Among other provisions, the IRA implemented a new 15% corporate alternative minimum tax based on GAAP net income, with certain adjustments as defined by the IRA, and clean energy-related provisions. The IRA's clean energy provisions included, among other provisions, the extension and modification of existing investment and PTCs for projects placed in service through 2024 and introduced new technology-neutral clean energy-related credits beginning in 2025. In addition, the IRA created a new, zero-emission nuclear power PTC and a clean hydrogen PTC. For the year ended December 31, 2024, Duke Energy Carolinas and Duke Energy Progress have recorded nuclear PTCs of approximately $449 million and $73 million, respectively. These amounts represent the estimated net realizable value of the PTCs, which were deferred to a regulatory liability. The Company will continue to assess its calculations and interpretations as new information and guidance becomes available. The Subsidiary Registrants are working with the state utility commissions on the appropriate regulatory process to pass the net realizable value back to customers over time. In 2024, net proceeds of $558 million was received related to the sale of tax credits, which includes primarily $428 million of nuclear power PTCs at Duke Energy Carolinas, $65 million of nuclear power PTCs at Duke Energy Progress, and $43 million of solar PTCs at Duke Energy Florida. See Note 4 for further details on the IRA as it relates to Duke Energy Florida and Duke Energy Carolinas' approval for a stand-alone rider starting January 1, 2025. Income Tax Expense Components of Income Tax Expense Tax benefit from discontinued operations, in the following tables, includes income tax benefits related to the Commercial Renewables Disposal Groups. See Note 2 for further details. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current income taxes Federal $ (365) $ 178 $ 359 $ 373 $ 14 $ 52 $ 70 $ 40 State 31 75 34 40 (12) 3 12 (6) Foreign 2 — — — — — — — Total current income taxes (332) 253 393 413 2 55 82 34 Deferred income taxes Federal 858 10 (22) (215) 181 8 (19) 40 State 81 (25) 59 (6) 86 1 8 21 Total deferred income taxes (a) 939 (15) 37 (221) 267 9 (11) 61 ITC amortization (17) (12) (4) (3) (1) — — — Income tax expense from continuing operations 590 226 426 189 268 64 71 95 Tax benefit from discontinued operations (50) — — — — — — — Total income tax expense included in Consolidated Statements of Operations $ 540 $ 226 $ 426 $ 189 $ 268 $ 64 $ 71 $ 95 (a) Total deferred income taxes include the utilization of NOL carryforwards and tax credit carryforwards of $523 million at Duke Energy and $8 million at Duke Energy Indiana. In addition, total deferred income taxes include the generation of NOL carryforwards and tax credit carryforwards of $47 million at Duke Energy Carolinas, $85 million at Progress Energy, $66 million at Duke Energy Progress, $30 million at Duke Energy Florida, $26 million at Duke Energy Ohio, and $8 million at Piedmont. Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current income taxes Federal (b) $ 71 $ 173 $ 459 $ 198 $ 279 $ (46) $ 10 $ 44 State 1 22 38 4 71 (3) 9 3 Foreign 3 — — — — — — — Total current income taxes 75 195 497 202 350 (49) 19 47 Deferred income taxes Federal 319 (43) (154) (69) (89) 111 77 25 State 53 (7) 38 19 — 1 14 12 Total deferred income taxes (a) 372 (50) (116) (50) (89) 112 91 37 ITC amortization (9) (4) (4) (3) — — — — Income tax expense from continuing operations 438 141 377 149 261 63 110 84 Tax benefit from discontinued operations (359) — — — — — — — Total income tax expense included in Consolidated Statements of Operations $ 79 $ 141 $ 377 $ 149 $ 261 $ 63 $ 110 $ 84 (a) Total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $214 million at Duke Energy and $54 million at Duke Energy Indiana. In addition, total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $2 million at Duke Energy Carolinas, $116 million at Progress Energy, $59 million at Duke Energy Progress, $5 million at Duke Energy Florida, $22 million at Duke Energy Ohio, and $15 million at Piedmont. (b) Total current federal income tax at Duke Energy includes corporate alternative minimum tax, net of tax credit utilization, of $69 million. In addition, under the IRA transferability provision, Progress Energy elected to sell $28 million of PTCs generated by Duke Energy Florida. Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current income taxes Federal $ 1 $ (71) $ (13) $ 37 $ (37) $ (2) $ 38 $ 32 State (8) (13) (3) — (23) 1 2 2 Foreign 4 — — — — — — — Total current income taxes (3) (84) (16) 37 (60) (1) 40 34 Deferred income taxes Federal 328 230 310 118 201 (22) (63) 12 State (14) (16) 59 7 84 3 — (7) Total deferred income taxes (a) 314 214 369 125 285 (19) (63) 5 ITC amortization (11) (4) (5) (4) — (1) (1) — Income tax expense (benefit) from continuing operations 300 126 348 158 225 (21) (24) 39 Tax benefit from discontinued operations (503) — — — — — — — Total income tax (benefit) expense included in Consolidated Statements of Operations $ (203) $ 126 $ 348 $ 158 $ 225 $ (21) $ (24) $ 39 (a) Total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $550 million at Duke Energy, $97 million at Duke Energy Carolinas, $128 million at Progress Energy, $9 million at Duke Energy Progress, $111 million at Duke Energy Florida, $7 million at Duke Energy Ohio, $13 million at Duke Energy Indiana, and $12 million at Piedmont. Duke Energy Income from Continuing Operations before Income Taxes Years Ended December 31, (in millions) 2024 2023 2022 Domestic $ 5,145 $ 4,700 $ 3,991 Foreign 49 67 87 Income from continuing operations before income taxes $ 5,194 $ 4,767 $ 4,078 Statutory Rate Reconciliation The following tables present a reconciliation of income tax expense at the U.S. federal statutory tax rate to the actual tax expense from continuing operations. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Income tax expense, computed at the statutory rate of 21% $ 1,090 $ 443 $ 545 $ 284 $ 279 $ 85 $ 108 $ 107 State income tax, net of federal income tax effect 88 40 73 27 58 3 16 12 Amortization of EDIT (436) (225) (121) (98) (23) (23) (49) (18) AFUDC equity income (48) (24) (16) (13) (3) (1) (3) (4) AFUDC equity depreciation 38 19 14 7 7 2 4 — Production tax credits (46) — (46) — (46) — — — Other tax credits (43) (23) (16) (12) (4) (1) (2) (2) Other items, net (53) (4) (7) (6) — (1) (3) — Income tax expense from continuing operations $ 590 $ 226 $ 426 $ 189 $ 268 $ 64 $ 71 $ 95 Effective tax rate 11.4 % 10.7 % 16.4 % 14.0 % 20.2 % 15.8 % 13.9 % 18.7 % Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Income tax expense, computed at the statutory rate of 21% $ 1,001 $ 338 $ 490 $ 241 $ 268 $ 83 $ 128 $ 97 State income tax, net of federal income tax effect 43 12 60 18 56 (2) 18 12 Amortization of EDIT (388) (197) (114) (91) (23) (22) (33) (20) AFUDC equity income (41) (19) (14) (11) (3) (2) (2) (4) AFUDC equity depreciation 37 18 13 6 7 2 4 — Tax credits (b) (63) (11) (46) (7) (39) (2) (2) (1) Interest on company-owned life insurance (a) (114) — — — — — — — Other items, net (37) — (12) (7) (5) 6 (3) — Income tax expense from continuing operations $ 438 $ 141 $ 377 $ 149 $ 261 $ 63 $ 110 $ 84 Effective tax rate 9.2 % 8.8 % 16.2 % 13.0 % 20.4 % 15.9 % 18.1 % 18.1 % (a) During 2023, the Company evaluated the deductibility of certain items spanning periods currently open under federal statute, including items related to interest on company-owned life insurance. As a result of this analysis, the Company recorded a favorable federal adjustment of approximately $114 million and a favorable state adjustment of approximately $6 million. The favorable state adjustment is included in State income tax, net of federal income tax effect, in the above table. (b) Tax credits at Progress Energy and Duke Energy Florida include $28 million of certain eligible PTCs, net of discount, that were elected to be sold in 2023 under the transferability provisions of the IRA. Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Income tax expense, computed at the statutory rate of 21% $ 856 $ 362 $ 457 $ 245 $ 238 $ 59 $ 24 $ 76 State income tax, net of federal income tax effect (17) (23) 44 6 48 3 2 (4) Amortization of EDIT (481) (195) (133) (74) (59) (79) (48) (23) AFUDC equity income (41) (20) (14) (11) (3) (1) (2) (2) AFUDC equity depreciation 36 18 12 6 6 1 4 — Other tax credits (43) (12) (16) (9) (7) (2) (3) (8) Other items, net (10) (4) (2) (5) 2 (2) (1) — Income tax expense (benefit) from continuing operations $ 300 $ 126 $ 348 $ 158 $ 225 $ (21) $ (24) $ 39 Effective tax rate 7.4 % 7.3 % 16.0 % 13.6 % 19.8 % (7.5) % (21.2) % 10.8 % Valuation allowances have been established for certain state NOL carryforwards and state income tax credits that reduce deferred tax assets to an amount that will be realized on a more-likely-than-not basis. The net change in the total valuation allowance is included in state income tax, net of federal income tax effect, in the above tables. Valuation allowances have been established for foreign tax credits and certain tax attributes that reduce deferred tax assets to an amount that will be realized on a more-likely-than-not basis. The net change in the total valuation allowance is included in Other items, net in the above tables. DEFERRED TAXES Net Deferred Income Tax Liability Components December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Deferred credits and other liabilities $ 284 $ 217 $ 84 $ 43 $ 41 $ 17 $ 15 $ 40 Lease obligations 430 88 265 179 86 2 12 2 Pension, post-retirement and other employee benefits 89 (33) (23) (1) (26) 6 1 (2) Progress Energy merger purchase accounting adjustments (a) 227 — — — — — — — Tax credits and NOL carryforwards 3,845 522 783 312 449 70 145 57 Regulatory liabilities and deferred credits — — — — — — 10 — Other 35 11 5 3 2 4 — 8 Valuation allowance (517) — — — — — — — Total deferred income tax assets 4,393 805 1,114 536 552 99 183 105 Investments and other assets (2,114) (1,350) (724) (671) (69) — — (48) Accelerated depreciation rates (11,942) (3,203) (4,608) (1,624) (3,047) (1,361) (1,677) (1,019) Regulatory assets and deferred debits, net (1,761) (304) (1,045) (585) (460) (52) — (56) Total deferred income tax liabilities (15,817) (4,857) (6,377) (2,880) (3,576) (1,413) (1,677) (1,123) Net deferred income tax liabilities $ (11,424) $ (4,052) $ (5,263) $ (2,344) $ (3,024) $ (1,314) $ (1,494) $ (1,018) (a) Primarily related to lease obligations and debt fair value adjustments. The following table presents the expiration of tax credits and NOL carryforwards. December 31, 2024 (in millions) Amount Expiration Year General Business Credits $ 2,186 2032 — 2044 Foreign Tax Credits (c) 615 2027 — 2028 State Carryforwards and Credits (a) 316 2025 — Indefinite Corporate AMT Credits 717 Indefinite Foreign NOL carryforwards (b) 11 2027 — 2042 Total tax credits and NOL carryforwards $ 3,845 (a) A valuation allowance of $102 million has been recorded on the state NOL and attribute carryforwards, as presented in the Net Deferred Income Tax Liability Components table. (b) A valuation allowance of $11 million has been recorded on the foreign NOL carryforwards, as presented in the Net Deferred Income Tax Liability Components table. (c) A valuation allowance of $404 million has been recorded on the foreign tax credits, as presented in the Net Deferred Income Tax Liability Components table. In 2024, the Company recorded a corporate alternative minimum tax liability, net of tax credit utilization, of $133 million. In addition, under the IRA transferability provision, the Company received net proceeds of $558 million related to the sale of certain tax credits generated by Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida. December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Deferred credits and other liabilities $ 327 $ 194 $ 77 $ 21 $ 56 $ 13 $ 18 $ 42 Lease obligations 418 86 256 179 77 4 15 3 Pension, post-retirement and other employee benefits 65 (41) (22) (1) (25) 5 2 (5) Progress Energy merger purchase accounting adjustments (a) 260 — — — — — — — Tax credits and NOL carryforwards 4,489 445 686 230 425 44 154 50 Regulatory liabilities and deferred credits — — — — — — 47 — Investments and other assets — — — — — — 1 — Other 102 29 22 12 8 5 5 9 Valuation allowance (544) — — — — — — — Total deferred income tax assets 5,117 713 1,019 441 541 71 242 99 Investments and other assets (1,812) (1,213) (596) (520) (91) — — (37) Accelerated depreciation rates (11,969) (3,411) (4,557) (1,823) (2,778) (1,314) (1,678) (944) Regulatory assets and deferred debits, net (1,892) (468) (1,063) (658) (405) (29) — (51) Total deferred income tax liabilities (15,673) (5,092) (6,216) (3,001) (3,274) (1,343) (1,678) (1,032) Net deferred income tax liabilities $ (10,556) $ (4,379) $ (5,197) $ (2,560) $ (2,733) $ (1,272) $ (1,436) $ (933) (a) Primarily related to lease obligations and debt fair value adjustments. UNRECOGNIZED TAX BENEFITS The following tables present changes to unrecognized tax benefits. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Unrecognized tax benefits – January 1 $ 62 $ 21 $ 24 $ 18 $ 6 $ 2 $ 3 $ 11 Gross increases – current period tax positions 12 4 5 4 1 — — 2 Unrecognized tax benefits – December 31 $ 74 $ 25 $ 29 $ 22 $ 7 $ 2 $ 3 $ 13 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Unrecognized tax benefits – January 1 $ 65 $ 17 $ 19 $ 13 $ 5 $ 1 $ 2 $ 9 Gross decreases – tax positions in prior periods (15) — — — — — — — Gross increases – current period tax positions 12 4 5 5 1 1 1 2 Total changes (3) 4 5 5 1 1 1 2 Unrecognized tax benefits – December 31 $ 62 $ 21 $ 24 $ 18 $ 6 $ 2 $ 3 $ 11 Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Unrecognized tax benefits – January 1 $ 51 $ 13 $ 15 $ 10 $ 4 $ 1 $ 2 $ 4 Gross increases – current period tax positions 14 4 4 3 1 — — 5 Total changes 14 4 4 3 1 — — 5 Unrecognized tax benefits – December 31 $ 65 $ 17 $ 19 $ 13 $ 5 $ 1 $ 2 $ 9 The following table includes additional information regarding the Duke Energy Registrants' unrecognized tax benefits at December 31, 2024. None of Duke Energy Registrants anticipates a material increase or decrease in unrecognized tax benefits within the next 12 months. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Amount that if recognized, would affect the effective tax rate or regulatory liability (a) $ 68 $ 24 $ 27 $ 20 $ 7 $ 2 $ 3 $ 11 (a) The Duke Energy Registrants are unable to estimate the specific amounts that would affect the ETR versus the regulatory liability. Duke Energy and its subsidiaries are no longer subject to federal, state, local or non-U.S. income tax examinations by tax authorities for years before 2019, aside from certain tax attributes carried forward for utilization in future years.

Other Income and Expenses, Net

Other Income and Expenses, Net	12 Months Ended
	Dec. 31, 2024
Other Income and Expenses [Abstract]
Other Income and Expenses, Net	OTHER INCOME AND EXPENSES, NET The components of Other income and expenses, net on the Consolidated Statements of Operations are as follows. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Interest income $ 63 $ 9 $ 18 $ 14 $ 4 $ 8 $ 5 $ 19 AFUDC equity 233 113 74 61 13 7 19 21 Post-in-service equity returns 52 31 20 20 — 1 1 — Nonoperating income, other 313 94 123 48 69 3 37 14 Other income and expense, net $ 661 $ 247 $ 235 $ 143 $ 86 $ 19 $ 62 $ 54 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Interest income $ 29 $ 10 $ 14 $ 9 $ 7 $ 25 $ 25 $ 19 AFUDC equity 198 91 67 52 15 9 10 21 Post-in-service equity returns 39 19 19 19 — 1 — — Nonoperating income, other 332 118 101 44 56 6 41 17 Other income and expense, net $ 598 $ 238 $ 201 $ 124 $ 78 $ 41 $ 76 $ 57 Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Interest income $ 27 $ 2 $ 24 $ 4 $ 20 $ 11 $ 15 $ 19 AFUDC equity 197 98 68 52 16 7 13 11 Post-in-service equity returns 34 14 18 18 — 1 1 — Nonoperating income, other 134 107 71 40 38 — 7 16 Other income and expense, net $ 392 $ 221 $ 181 $ 114 $ 74 $ 19 $ 36 $ 46

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2024
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS For information on subsequent events related to regulatory matters, commitments and contingencies, debt and credit facilities, and asset retirement obligations, see Notes 4, 5, 7 and 10, respectively.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 4,524	$ 2,841	$ 2,550

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Dec. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Insider Trading Policies and Pr

Insider Trading Policies and Procedures	12 Months Ended
	Dec. 31, 2024
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Cybersecurity Risk Management a

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	Ensuring the security of Duke Energy’s assets, information and teammates is vital for delivering the essential service on which Duke Energy’s customers and communities depend. In light of the ever-evolving threat landscape and increasing sophistication of threat actor tactics, techniques and procedures, steadfast and advanced cybersecurity and security operations are integral parts of Duke Energy’s enterprise risk management framework. Duke Energy's enterprise risk management framework is used across the enterprise by subject matter experts to identify, assess, monitor and communicate enterprise level risks to the Chief Risk Officer. Duke Energy’s technology and cybersecurity risk management program is integrated into the Company’s overall Enterprise Risk Management program and is composed of three primary lines of defense: (1) the Cybersecurity Incident Response Team (CIRT); (2) the Duke Energy Enterprise Security Team (EST); and (3) internal and external cybersecurity audits. Duke Energy’s first line of defense is the CIRT under the Office of the Chief Administrative Officer (CAO). The CIRT reports up to leaders in the Chief Security and Information Security Office, including the Chief Security and Information Security Officer (CSISO), Managing Director of Cybersecurity and Network Defense, and Director of Cybersecurity Operations, whose cybersecurity backgrounds include many years serving in operational cyber roles, leading incident response, participating in industry engagement, collaborating with federal and local cyber programs, and time analyzing security breaches across the industry. The CIRT oversees an enterprisewide process that identifies, assesses, responds to and resolves cyber incidents, both internal and those associated with the Company’s use of third-party service providers, by defining roles, responsibilities and the process for problem source identification, mitigation, and eradication triggered by a suspected cyber incident. Duke Energy manages cybersecurity threats through its 24/7 Duke Energy Cybersecurity Operations Center (CSOC), which serves as the Company’s central command center for monitoring and coordinating responses to cyber-threats. The CSOC engages in daily information sharing within the utilities industry and with government partners and monitors incoming intelligence and cyber incident impacts. The CSOC assesses the relevant information by assigning a CIRT Heat Map score, which results in CIRT activation if a certain threat level is met. It also results in the assignment of additional roles and responsibilities to enable the cybersecurity leadership and technical teams to collectively and regularly review incident information, score the impact, communicate to leadership, and respond appropriately. Another key component of Duke Energy’s first line of defense against cybersecurity threats is its Third-Party Risk Management (TPRM) process, whereby third parties providing services that meet certain criteria such as storing or transmitting Duke Energy data, hosting an application, or connecting to the Duke Energy network are required to undergo a cybersecurity assessment primarily to ascertain the risk of a third-party’s proposed services to Duke Energy.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	. Duke Energy’s technology and cybersecurity risk management program is integrated into the Company’s overall Enterprise Risk Management program and is composed of three primary lines of defense: (1) the Cybersecurity Incident Response Team (CIRT); (2) the Duke Energy Enterprise Security Team (EST); and (3) internal and external cybersecurity audits.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	In addition, the Operations and Nuclear Oversight Committee (ONOC) of the Board of Directors provides oversight of the nuclear safety and cybersecurity of Duke Energy’s nuclear power program, which is integrated with the companywide cyber protocols, and the Chair of the ONOC reports out to the Board of Directors on such oversight activities.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Operations and Nuclear Oversight Committee
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	In addition, the Operations and Nuclear Oversight Committee (ONOC) of the Board of Directors provides oversight of the nuclear safety and cybersecurity of Duke Energy’s nuclear power program, which is integrated with the companywide cyber protocols, and the Chair of the ONOC reports out to the Board of Directors on such oversight activities.
Cybersecurity Risk Role of Management [Text Block]	The Audit Committee has primary oversight of management’s efforts to mitigate cybersecurity and technology risk and respond to cyber incidents. The Audit Committee receives updates throughout the year from the CAO and CSISO on cybersecurity and grid security issues, including compliance with regulations, employee training and drills, at every regularly scheduled Audit Committee meeting, and engages in discussions throughout the year with management on the effectiveness of Duke Energy’s overall cybersecurity program and progress for addressing any identified risks. In 2024, the Audit Committee received three updates and the full Board of Directors received one update on cybersecurity. The Audit Committee also receives periodic updates on Duke Energy’s digital transformation and the operation of, and enhancements to, the Company’s financial systems and business and operational technical systems. The reviews presented to the Audit Committee are followed with an update to the full Board of Directors by the Chair of the Audit Committee. In addition, the Operations and Nuclear Oversight Committee (ONOC) of the Board of Directors provides oversight of the nuclear safety and cybersecurity of Duke Energy’s nuclear power program, which is integrated with the companywide cyber protocols, and the Chair of the ONOC reports out to the Board of Directors on such oversight activities. Duke Energy’s nuclear cybersecurity program and associated cybersecurity plan (CSP) were fully implemented in 2017 in accordance with NRC regulation 10 CFR 73.54, “Protection of digital computer and communication systems and networks” and leverage monitoring, testing, drills, audits, assessments, and NRC inspections to continue to validate the effectiveness of the program to protect plant assets from cybersecurity threats. Moreover, Duke Energy’s processes ensure that the Board of Directors receive contemporaneous reporting on potentially significant cyber events including response, legal obligations, and outreach and notification to regulators and customers when needed, as well as an opportunity to provide guidance to management as appropriate. The relevant cybersecurity risk expertise of Duke Energy’s management who serve on the ECOG and/or senior management who lead the CIRT and EST is described below. • The CEO of Duke Energy has over 20 years of experience in the utilities industry, and has gained cybersecurity experience as CEO of one of America’s largest utility companies, and through service on the board of the Edison Electric Institute, the Institute of Nuclear Power Operations, the World Association of Nuclear Operators, and past service on the Department of Homeland Security Advisory Council. • The EVP and Chief Financial Officer of Duke Energy (CFO) previously served as the Company’s Chief Transformation and Administrative Officer and led the Company’s business transformation through digital innovation, new ways of working and process redesign. In this role, the CFO gained an in-depth understanding of the Company's cybersecurity procedures and key threats, and was responsible for the enterprise business services and technology team, including the information and technology organization. • The EVP, Chief Generation Officer and Enterprise Operational Excellence of Duke Energy has gained cybersecurity experience through being responsible for the safe, efficient and reliable operation of Duke Energy's fleet of nuclear, natural gas, hydro, solar and coal units. • The President of Duke Energy has gained cybersecurity experience through focusing on transmission and the development of long-term grid strategies and solutions and through a prior role as Chief Distribution Officer, overseeing the safe, reliable, and efficient operation of Duke Energy’s electric distribution systems, and through serving on the board of the Association of Edison Illuminating Companies. • The CSISO of Duke Energy has over 25 years of experience building and leading security teams within multiple industries. The CSISO holds a Secret Security clearance and is committed to strengthening U.S. critical infrastructure through active collaboration with federal partners at the Federal Bureau of Investigation, Department of Energy, Department of Homeland Security, and state partners including the national guard, law enforcement and universities. •
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Duke Energy’s first line of defense is the CIRT under the Office of the Chief Administrative Officer (CAO). The CIRT reports up to leaders in the Chief Security and Information Security Office, including the Chief Security and Information Security Officer (CSISO), Managing Director of Cybersecurity and Network Defense, and Director of Cybersecurity Operations, whose cybersecurity backgrounds include many years serving in operational cyber roles, leading incident response, participating in industry engagement, collaborating with federal and local cyber programs, and time analyzing security breaches across the industry.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	The relevant cybersecurity risk expertise of Duke Energy’s management who serve on the ECOG and/or senior management who lead the CIRT and EST is described below. • The CEO of Duke Energy has over 20 years of experience in the utilities industry, and has gained cybersecurity experience as CEO of one of America’s largest utility companies, and through service on the board of the Edison Electric Institute, the Institute of Nuclear Power Operations, the World Association of Nuclear Operators, and past service on the Department of Homeland Security Advisory Council. • The EVP and Chief Financial Officer of Duke Energy (CFO) previously served as the Company’s Chief Transformation and Administrative Officer and led the Company’s business transformation through digital innovation, new ways of working and process redesign. In this role, the CFO gained an in-depth understanding of the Company's cybersecurity procedures and key threats, and was responsible for the enterprise business services and technology team, including the information and technology organization. • The EVP, Chief Generation Officer and Enterprise Operational Excellence of Duke Energy has gained cybersecurity experience through being responsible for the safe, efficient and reliable operation of Duke Energy's fleet of nuclear, natural gas, hydro, solar and coal units. • The President of Duke Energy has gained cybersecurity experience through focusing on transmission and the development of long-term grid strategies and solutions and through a prior role as Chief Distribution Officer, overseeing the safe, reliable, and efficient operation of Duke Energy’s electric distribution systems, and through serving on the board of the Association of Edison Illuminating Companies. • The CSISO of Duke Energy has over 25 years of experience building and leading security teams within multiple industries. The CSISO holds a Secret Security clearance and is committed to strengthening U.S. critical infrastructure through active collaboration with federal partners at the Federal Bureau of Investigation, Department of Energy, Department of Homeland Security, and state partners including the national guard, law enforcement and universities. •
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	The Company’s Executive Cybersecurity Oversight Governance Committee (ECOG), comprised of the Company's Chair and Chief Executive Officer (CEO), President, Executive Vice President (EVP) and Chief Financial Officer, and EVP, Chief Generation Officer and Enterprise Operational Excellence, receives monthly updates from the CAO and CSISO and provides senior management throughout the Company informational technology and operational technology perspectives, oversight and governance on investments and priorities for the broader cybersecurity organization, in addition to providing final decision oversight on recommendations and response to the ever-challenging cybersecurity threat landscape. The ECOG also is leveraged to supply information and bring transparency to senior management throughout the Company on the increasing threat landscape and the actions, response and road map to combat the threats.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Nature of Operations and Basis of Consolidation	Nature of Operations and Basis of Consolidation Duke Energy is an energy company headquartered in Charlotte, North Carolina, subject to regulation by the FERC and other regulatory agencies listed below. Duke Energy operates in the U.S. primarily through its direct and indirect subsidiaries. Certain Duke Energy subsidiaries are also subsidiary registrants, including Duke Energy Carolinas; Progress Energy; Duke Energy Progress; Duke Energy Florida; Duke Energy Ohio; Duke Energy Indiana and Piedmont. When discussing Duke Energy’s consolidated financial information, it necessarily includes the results of its separate Subsidiary Registrants, which along with Duke Energy, are collectively referred to as the Duke Energy Registrants. The information in these combined notes relates to each of the Duke Energy Registrants as noted in the Index to Combined Notes to Consolidated Financial Statements. However, none of the Subsidiary Registrants make any representation as to information related solely to Duke Energy or the Subsidiary Registrants of Duke Energy other than itself. These Consolidated Financial Statements include, after eliminating intercompany transactions and balances, the accounts of the Duke Energy Registrants and subsidiaries or VIEs where the respective Duke Energy Registrants have control. See Note 18 for additional information on VIEs. These Consolidated Financial Statements also reflect the Duke Energy Registrants’ proportionate share of certain jointly owned generation and transmission facilities. See Note 9 for additional information on joint ownership. Substantially all of the Subsidiary Registrants' operations qualify for regulatory accounting. Duke Energy Carolinas is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Carolinas is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC. Progress Energy is a public utility holding company, which conducts operations through its wholly owned subsidiaries, Duke Energy Progress and Duke Energy Florida. Progress Energy is subject to regulation by FERC and other regulatory agencies listed below. Duke Energy Progress is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of North Carolina and South Carolina. Duke Energy Progress is subject to the regulatory provisions of the NCUC, PSCSC, NRC and FERC. Duke Energy Florida is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Florida. Duke Energy Florida is subject to the regulatory provisions of the FPSC, NRC and FERC. Duke Energy Ohio is a regulated public utility primarily engaged in the transmission and distribution of electricity in portions of Ohio and Kentucky, the generation and sale of electricity in portions of Kentucky and the transportation and sale of natural gas in portions of Ohio and Kentucky. Duke Energy Ohio conducts competitive auctions for retail electricity supply in Ohio whereby the energy price is recovered from retail customers and recorded in Operating Revenues on the Consolidated Statements of Operations and Comprehensive Income. Operations in Kentucky are conducted through its wholly owned subsidiary, Duke Energy Kentucky. References herein to Duke Energy Ohio collectively include Duke Energy Ohio and its subsidiaries, unless otherwise noted. Duke Energy Ohio is subject to the regulatory provisions of the PUCO, KPSC and FERC. Duke Energy Indiana is a regulated public utility primarily engaged in the generation, transmission, distribution and sale of electricity in portions of Indiana. Duke Energy Indiana is subject to the regulatory provisions of the IURC and FERC. Piedmont is a regulated public utility primarily engaged in the distribution of natural gas in portions of North Carolina, South Carolina and Tennessee. Piedmont is subject to the regulatory provisions of the NCUC, PSCSC, TPUC and FERC. Certain prior year amounts have been reclassified to conform to the current year presentation.
Discontinued Operations	Discontinued Operations
Use of Estimates	Use of Estimates In preparing financial statements that conform to GAAP, the Duke Energy Registrants must make estimates and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates.
Regulatory Accounting	Regulatory Accounting The majority of the Duke Energy Registrants’ operations are subject to price regulation for the sale of electricity and natural gas by state utility commissions or FERC. When prices are set on the basis of specific costs of the regulated operations and an effective franchise is in place such that sufficient natural gas or electric services can be sold to recover those costs, the Duke Energy Registrants apply regulatory accounting. Regulatory accounting changes the timing of the recognition of costs or revenues relative to a company that does not apply regulatory accounting. As a result, regulatory assets and regulatory liabilities are recognized on the Consolidated Balance Sheets. Regulatory assets and liabilities are amortized consistent with the treatment of the related cost in the ratemaking process. Regulatory assets are reviewed for recoverability each reporting period. If a regulatory asset is no longer deemed probable of recovery, the deferred cost is charged to earnings. See Note 4 for further information. Regulatory accounting rules also require recognition of a disallowance (also called "impairment") loss if it becomes probable that part of the cost of a plant under construction (or a recently completed plant or an abandoned plant) will be disallowed for ratemaking purposes and a reasonable estimate of the amount of the disallowance can be made. For example, if a cost cap is set for a plant still under construction, the amount of the disallowance is a result of a judgment as to the ultimate cost of the plant. These disallowances can require judgments on allowed future rate recovery. When it becomes probable that regulated generation, transmission or distribution assets will be abandoned, the cost of the asset is removed from plant in service. The value that may be retained as a regulatory asset on the balance sheet for the abandoned property is dependent upon amounts that may be recovered through regulated rates, including any return. As such, an impairment charge could be partially or fully offset by the establishment of a regulatory asset if rate recovery is probable. The impairment charge for a disallowance of costs for regulated plants under construction, recently completed or abandoned is based on discounted cash flows.
Regulated Fuel Costs and Purchased Power	The Duke Energy Registrants utilize cost-tracking mechanisms, commonly referred to as fuel adjustment clauses or PGA clauses. These clauses allow for the recovery of fuel and fuel-related costs, portions of purchased power, natural gas costs and hedging costs through surcharges on customer rates. The difference between the costs incurred and the surcharge revenues is recorded either as an adjustment to Operating Revenues, Operating Expenses – Fuel used in electric generation or Operating Expenses – Cost of natural gas on the Consolidated Statements of Operations, with an off-setting impact on regulatory assets or liabilities
Cash, Cash Equivalents and Restricted Cash	Cash, Cash Equivalents and Restricted Cash
Inventory	Inventory
Investments in Debt and Equity Securities	Investments in Debt and Equity Securities
Goodwill and Intangible Assets	Goodwill Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont perform annual goodwill impairment tests as of August 31 each year at the reporting unit level, which is determined to be a business segment or one level below. Duke Energy, Progress Energy, Duke Energy Ohio and Piedmont update these tests between annual tests if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. See Note 12 for further information. Intangible Assets Intangible assets are included in Other in Other Noncurrent Assets on the Consolidated Balance Sheets. Generally, intangible assets are amortized using an amortization method that reflects the pattern in which the economic benefits of the intangible asset are consumed or on a straight-line basis if that pattern is not readily determinable. Amortization of intangibles is reflected in Depreciation and amortization on the Consolidated Statements of Operations. Intangible assets are subject to impairment testing and if impaired, the carrying value is accordingly reduced.
Long-Lived Asset Impairments	Long-Lived Asset Impairments The Duke Energy Registrants evaluate long-lived assets that are held and used, excluding goodwill, for impairment when circumstances indicate the carrying value of those assets may not be recoverable. An impairment exists when a long-lived asset’s carrying value exceeds the estimated undiscounted cash flows expected to result from the use and eventual disposition of the asset. The estimated cash flows may be based on alternative expected outcomes that are probability weighted. If the carrying value of the long-lived asset is not recoverable based on these estimated future undiscounted cash flows, the carrying value of the asset is written down to its then current estimated fair value and an impairment charge is recognized. The Duke Energy Registrants assess fair value of long-lived assets that are held and used using various methods, including recent comparable third-party sales, internally developed discounted cash flow analysis and analysis from outside advisors. Triggering events to reassess cash flows may include, but are not limited to, significant changes in commodity prices, the condition of an asset or management’s interest in selling the asset.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are stated at the lower of depreciated historical cost net of any disallowances or fair value, if impaired. The Duke Energy Registrants capitalize all construction-related direct labor and material costs, as well as indirect construction costs such as general engineering, taxes and financing costs. See “Allowance for Funds Used During Construction and Interest Capitalized” section below for information on capitalized financing costs. Costs of renewals and betterments that extend the useful life of property, plant and equipment are also capitalized. The cost of repairs, replacements and major maintenance projects, which do not extend the useful life or increase the expected output of the asset, are expensed as incurred. Depreciation is generally computed over the estimated useful life of the asset using the composite straight-line method. Depreciation studies are conducted periodically to update composite rates and are approved by state utility commissions and/or the FERC when required. The composite weighted average depreciation rates, excluding nuclear fuel, are included in the table that follows. Years Ended December 31, 2024 2023 2022 Duke Energy 3.0 % 2.9 % 3.0 % Duke Energy Carolinas 3.1 % 2.7 % 2.7 % Progress Energy 3.3 % 3.3 % 3.2 % Duke Energy Progress 3.2 % 3.1 % 3.0 % Duke Energy Florida 3.5 % 3.5 % 3.5 % Duke Energy Ohio 2.9 % 2.8 % 2.9 % Duke Energy Indiana 3.6 % 3.6 % 3.6 % Piedmont 2.2 % 2.1 % 2.1 % In general, when the Duke Energy Registrants retire regulated property, plant and equipment, the original cost plus the cost of retirement, less salvage value and any depreciation already recognized, is charged to accumulated depreciation. However, when it becomes probable the asset will be retired substantially in advance of its original expected useful life or is abandoned, the cost of the asset and the corresponding accumulated depreciation is recognized as a separate asset. If the asset is still in operation, the net amount is classified as Facilities to be retired, net on the Consolidated Balance Sheets. If the asset is no longer operating, the net amount is classified in Regulatory assets on the Consolidated Balance Sheets if deemed recoverable (see discussion of long-lived asset impairments above). The carrying value of the asset is based on historical cost if the Duke Energy Registrants are allowed to recover the remaining net book value and a return equal to at least the incremental borrowing rate. If not, an impairment is recognized to the extent the net book value of the asset exceeds the present value of future revenues discounted at the incremental borrowing rate.
Leases	Leases Duke Energy determines if an arrangement is a lease at contract inception based on whether the arrangement involves the use of a physically distinct identified asset and whether Duke Energy has the right to obtain substantially all of the economic benefits from the use of the asset throughout the period as well as the right to direct the use of the asset. As a policy election, Duke Energy does not evaluate arrangements with initial contract terms of less than one year as leases. Operating leases are included in Operating lease ROU assets, net, Other current liabilities and Operating lease liabilities on the Consolidated Balance Sheets. Finance leases are included in Property, Plant and Equipment, Current maturities of long-term debt and Long-Term Debt on the Consolidated Balance Sheets. For lessee and lessor arrangements, Duke Energy has elected a policy to not separate lease and non-lease components for all asset classes. For lessor arrangements, lease and non-lease components are only combined under one arrangement and accounted for under the lease accounting framework if the non-lease components are not the predominant component of the arrangement and the lease component would be classified as an operating lease.
Leases	Leases Duke Energy determines if an arrangement is a lease at contract inception based on whether the arrangement involves the use of a physically distinct identified asset and whether Duke Energy has the right to obtain substantially all of the economic benefits from the use of the asset throughout the period as well as the right to direct the use of the asset. As a policy election, Duke Energy does not evaluate arrangements with initial contract terms of less than one year as leases. Operating leases are included in Operating lease ROU assets, net, Other current liabilities and Operating lease liabilities on the Consolidated Balance Sheets. Finance leases are included in Property, Plant and Equipment, Current maturities of long-term debt and Long-Term Debt on the Consolidated Balance Sheets. For lessee and lessor arrangements, Duke Energy has elected a policy to not separate lease and non-lease components for all asset classes. For lessor arrangements, lease and non-lease components are only combined under one arrangement and accounted for under the lease accounting framework if the non-lease components are not the predominant component of the arrangement and the lease component would be classified as an operating lease.
Nuclear Fuel	Nuclear Fuel Nuclear fuel is classified as Property, Plant and Equipment on the Consolidated Balance Sheets. Nuclear fuel in the front-end fuel processing phase is considered work in progress and not amortized until placed in service. Amortization of nuclear fuel is included within Fuel used in electric generation and purchased power on the Consolidated Statements of Operations. Amortization is recorded using the units-of-production method.
Allowance for Funds Used During Construction and Interest Capitalized	Allowance for Funds Used During Construction and Interest Capitalized For regulated operations, the debt and equity costs of financing the construction of property, plant and equipment are reflected as AFUDC and capitalized as a component of the cost of property, plant and equipment. AFUDC equity is reported on the Consolidated Statements of Operations as non-cash income in Other income and expenses, net. AFUDC debt is reported as a non-cash offset to Interest Expense. After construction is completed, the Duke Energy Registrants are permitted to recover these costs through their inclusion in rate base and the corresponding subsequent depreciation or amortization of those regulated assets.
Asset Retirement Obligations	Asset Retirement Obligations AROs are recognized for legal obligations associated with the retirement of property, plant and equipment. When recording an ARO, the present value of the projected liability is recognized in the period in which it is incurred, if a reasonable estimate of fair value can be made. The liability is accreted over time. For operating plants, the present value of the liability is added to the cost of the associated asset and depreciated over the remaining life of the asset. For retired plants, the present value of the liability is recorded as a regulatory asset unless determined not to be probable of recovery. The present value of the initial obligation and subsequent updates are based on discounted cash flows, which include estimates regarding timing of future cash flows, selection of discount rates and cost escalation rates, among other factors. These estimates are subject to change. Depreciation expense is adjusted prospectively for any changes to the carrying amount of the associated asset. The Duke Energy Registrants receive amounts to fund the cost of the ARO for regulated operations through a combination of regulated revenues and earnings on the NDTF. As a result, amounts recovered in regulated revenues, earnings on the NDTF, accretion expense and depreciation of the associated asset are netted and deferred as a regulatory asset or liability.
Accounts Payable	Accounts Payable
Revenue Recognition	Revenue Recognition Duke Energy recognizes revenue as customers obtain control of promised goods and services in an amount that reflects consideration expected in exchange for those goods or services. Generally, the delivery of electricity and natural gas results in the transfer of control to customers at the time the commodity is delivered and the amount of revenue recognized is equal to the amount billed to each customer, including estimated volumes delivered when billings have not yet occurred. See Note 19 for further information. Alternative Revenue Programs Duke Energy accounts for certain types of programs established by the regulators in the states in which it operates, including decoupling mechanisms, as alternative revenue programs. Alternative revenue programs are contracts between an entity and its regulator, not a contract between an entity and a customer. Revenue arising from alternative revenue programs is presented as Regulated electric revenues and Regulated natural gas revenues on the Consolidated Statements of Operations. Revenue from alternative revenue programs is recognized in the period they are earned (i.e., during the period of revenue shortfall or excess due to fluctuations in customer usage or when specific targets are met resulting in the achievement of performance incentives or penalties) and a regulatory asset or liability on the Consolidated Balance Sheets is established, which is subsequently billed or refunded to customers. Duke Energy recognizes revenue as alternative revenue programs for programs that have been authorized for rate recovery, are objectively determinable and probable of recovery, and are expected to be collected within 24 months. See Note 19 for disaggregated revenue information including revenue from contracts with customers and revenues recognized as alternative revenue programs. Duke Energy recognizes revenue consistent with amounts billed under tariff offerings or at contractually agreed upon rates based on actual physical delivery of electric or natural gas service, including estimated volumes delivered when billings have not yet occurred. As such, the majority of Duke Energy’s revenues have fixed pricing based on the contractual terms of the published tariffs. Absent decoupling mechanisms, the variability in expected cash flows of the majority of Duke Energy's revenue is attributable to the customer’s volumetric demand and ultimate quantities of energy or natural gas supplied and used during the billing period. The stand-alone selling price of related sales are designed to support recovery of prudently incurred costs and an appropriate return on invested assets and are primarily governed by published tariff rates or contractual agreements approved by relevant regulatory bodies. As described in Note 1, certain excise taxes and franchise fees levied by state or local governments are required to be paid even if not collected from the customer. These taxes are recognized on a gross basis as part of revenues. Duke Energy elects to account for all other taxes net of revenues. Performance obligations are satisfied over time as energy or natural gas is delivered and consumed with billings generally occurring monthly and related payments due within 30 days, depending on regulatory requirements. In no event does the timing between payment and delivery of the goods and services exceed one year. Using this output method for revenue recognition provides a faithful depiction of the transfer of electric and natural gas service as customers obtain control of the commodity and benefit from its use at delivery. Additionally, Duke Energy has an enforceable right to consideration for energy or natural gas delivered at any discrete point in time and will recognize revenue at an amount that reflects the consideration to which Duke Energy is entitled for the energy or natural gas delivered. As described above, the majority of Duke Energy’s tariff revenues are at will and, as such, related contracts with customers have an expected duration of one year or less and will not have future performance obligations for disclosure. Additionally, other long-term revenue streams, including wholesale contracts, generally provide services that are part of a single performance obligation, the delivery of electricity or natural gas. As such, other than material fixed consideration under long-term contracts, related disclosures for future performance obligations are also not applicable.
Derivatives and Hedging	Derivatives and Hedging Derivative and non-derivative instruments may be used in connection with commodity price and interest rate activities, including swaps, futures, forwards and options. All derivative instruments, except those that qualify for the NPNS exception, are recorded on the Consolidated Balance Sheets at fair value. Qualifying derivative instruments may be designated as either cash flow hedges or fair value hedges. Other derivative instruments (undesignated contracts) either have not been designated or do not qualify as hedges. The effective portion of the change in the fair value of cash flow hedges is recorded in AOCI. The effective portion of the change in the fair value of a fair value hedge is offset in net income by changes in the hedged item. For activity subject to regulatory accounting, gains and losses on derivative contracts are reflected as regulatory assets or liabilities and not as other comprehensive income or current period income. As a result, changes in fair value of these derivatives have no immediate earnings impact. Formal documentation, including transaction type and risk management strategy, is maintained for all contracts accounted for as a hedge. At inception and at least every three months thereafter, the hedge contract is assessed to see if it is highly effective in offsetting changes in cash flows or fair values of hedged items.
Captive Insurance Reserves	Captive Insurance Reserves Duke Energy has captive insurance subsidiaries that provide coverage, on an indemnity basis, to the Subsidiary Registrants as well as certain third parties, on a limited basis, for financial losses, primarily related to property, workers’ compensation and general liability. Liabilities include provisions for estimated losses incurred but not reported (IBNR), as well as estimated provisions for known claims. IBNR reserve estimates are primarily based upon historical loss experience, industry data and other actuarial assumptions. Reserve estimates are adjusted in future periods as actual losses differ from experience. Duke Energy, through its captive insurance entities, also has reinsurance coverage with third parties for certain losses above a per occurrence and/or aggregate retention. Receivables for reinsurance coverage are recognized when realization is deemed probable.
Preferred Stock	Preferred Stock
Loss Contingencies and Environmental Liabilities	Loss Contingencies and Environmental Liabilities Contingent losses are recorded when it is probable a loss has occurred and the loss can be reasonably estimated. When a range of the probable loss exists and no amount within the range is a better estimate than any other amount, the minimum amount in the range is recorded. Unless otherwise required by GAAP, legal fees are expensed as incurred. Environmental liabilities are recorded on an undiscounted basis when environmental remediation or other liabilities become probable and can be reasonably estimated. Environmental expenditures related to past operations that do not generate current or future revenues are expensed. Environmental expenditures related to operations that generate current or future revenues are expensed or capitalized, as appropriate. Certain environmental expenditures receive regulatory accounting treatment and are recorded as regulatory assets.
Severance and Special Termination Benefits	Severance and Special Termination Benefits
Guarantees	Guarantees
Income Taxes	Income Taxes Duke Energy and its subsidiaries file a consolidated federal income tax return and other state and foreign jurisdictional returns. The Subsidiary Registrants are parties to a tax-sharing agreement with Duke Energy. Income taxes recorded represent amounts the Subsidiary Registrants would incur as separate C-Corporations. Deferred income taxes have been provided for temporary differences between GAAP and tax bases of assets and liabilities because the differences create taxable or tax-deductible amounts for future periods. ITCs associated with regulated operations are deferred and amortized as a reduction of income tax expense over the estimated useful lives of the related properties. PTCs associated with regulated operations reduce income tax expense or are deferred and amortized as a reduction of income tax expense over a period of time that is agreed upon by the regulatory authorities and the Subsidiary Registrants. Accumulated deferred income taxes are valued using the enacted tax rate expected to apply to taxable income in the periods in which the deferred tax asset or liability is expected to be settled or realized. In the event of a change in tax rates, deferred tax assets and liabilities are remeasured as of the enactment date of the new rate. To the extent that the change in the value of the deferred tax represents an obligation to customers, the impact of the remeasurement is deferred to a regulatory liability. Remaining impacts are recorded in income from continuing operations. Duke Energy's results of operations could be impacted if the estimate of the tax effect of reversing temporary differences is not reflective of actual outcomes, is modified to reflect new developments or interpretations of the tax law, revised to incorporate new accounting principles, or changes in the expected timing or manner of a reversal. Tax-related interest and penalties are recorded in Interest Expense and Other income and expenses, net in the Consolidated Statements of Operations.
Excise Taxes	Excise Taxes
Dividend Restrictions and Unappropriated Retained Earnings	Dividend Restrictions and Unappropriated Retained Earnings
New Accounting Standard	New Accounting Standards Other than implementation of the enhanced disclosure requirements for reportable business segments as described in Note 3, no new accounting standards were adopted by any of the Duke Energy Registrants in 2024.
Earnings Per Share	Basic EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to Duke Energy common stockholders, as adjusted for distributed and undistributed earnings allocated to participating securities and accumulated preferred dividends, by the diluted weighted average number of common shares outstanding during the period. Diluted EPS reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as equity forward sale agreements or convertible debt, were exercised or settled. Duke Energy applies the if-converted method for calculating any potential dilutive effect of the conversion of the outstanding convertible notes on diluted EPS, if applicable.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Schedule of Current and Noncurrent Assets and Liabilities	The following table provides a description of amounts included in Other within Current Assets or Current Liabilities that exceed 5% of total Current Assets or Current Liabilities on the Duke Energy Registrants' Consolidated Balance Sheets at either December 31, 2024, or 2023. December 31, (in millions) Location 2024 2023 Duke Energy Carolinas Accrued compensation Current Liabilities $ 234 $ 224 Duke Energy Florida Tax receivables Current Assets $ 166 $ 12 Customer deposits/Collateral liabilities Current Liabilities $ 164 $ 168 Duke Energy Ohio Tax receivables Current Assets $ 4 95 Duke Energy Indiana Customer advances Current Liabilities $ 100 $ 87
Schedule of Cash and Cash Equivalents	The following table presents the components of cash, cash equivalents and restricted cash included in the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 Duke Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Duke Energy Progress Energy Energy (in millions) Energy Carolinas Energy Progress Florida Energy Carolinas Energy Progress Florida Current Assets Cash and cash equivalents $ 314 $ 6 $ 73 $ 24 $ 33 $ 253 $ 9 $ 59 $ 18 $ 24 Other 84 9 76 40 35 76 9 67 31 36 Other Noncurrent Assets Other 20 1 11 5 7 16 1 9 2 7 Total cash, cash equivalents and restricted cash $ 418 $ 16 $ 160 $ 69 $ 75 $ 345 $ 19 $ 135 $ 51 $ 67
Restrictions on Cash and Cash Equivalents	The following table presents the components of cash, cash equivalents and restricted cash included in the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 Duke Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Duke Energy Progress Energy Energy (in millions) Energy Carolinas Energy Progress Florida Energy Carolinas Energy Progress Florida Current Assets Cash and cash equivalents $ 314 $ 6 $ 73 $ 24 $ 33 $ 253 $ 9 $ 59 $ 18 $ 24 Other 84 9 76 40 35 76 9 67 31 36 Other Noncurrent Assets Other 20 1 11 5 7 16 1 9 2 7 Total cash, cash equivalents and restricted cash $ 418 $ 16 $ 160 $ 69 $ 75 $ 345 $ 19 $ 135 $ 51 $ 67
Components of Inventory	The components of inventory are presented in the tables below. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Materials and supplies $ 3,387 $ 1,150 $ 1,649 $ 1,074 $ 576 $ 149 $ 389 $ 11 Coal 801 341 241 164 77 23 196 — Natural gas, oil and other 321 45 196 103 92 11 1 67 Total inventory $ 4,509 $ 1,536 $ 2,086 $ 1,341 $ 745 $ 183 $ 586 $ 78 December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Materials and supplies $ 3,086 $ 1,075 $ 1,465 $ 963 $ 502 $ 139 $ 361 $ 12 Coal 842 364 231 154 77 28 219 — Natural gas, oil and other 364 45 205 110 95 12 2 100 Total inventory $ 4,292 $ 1,484 $ 1,901 $ 1,227 $ 674 $ 179 $ 582 $ 112
Schedule of Property, Plant and Equipment	The composite weighted average depreciation rates, excluding nuclear fuel, are included in the table that follows. Years Ended December 31, 2024 2023 2022 Duke Energy 3.0 % 2.9 % 3.0 % Duke Energy Carolinas 3.1 % 2.7 % 2.7 % Progress Energy 3.3 % 3.3 % 3.2 % Duke Energy Progress 3.2 % 3.1 % 3.0 % Duke Energy Florida 3.5 % 3.5 % 3.5 % Duke Energy Ohio 2.9 % 2.8 % 2.9 % Duke Energy Indiana 3.6 % 3.6 % 3.6 % Piedmont 2.2 % 2.1 % 2.1 % The following tables summarize the property, plant and equipment for Duke Energy and its subsidiary registrants. December 31, 2024 Average Remaining Duke Duke Duke Duke Duke Useful Life Duke Energy Progress Energy Energy Energy Energy (in millions) (Years) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Land $ 2,569 $ 617 $ 1,134 $ 535 $ 599 $ 258 $ 144 $ 391 Plant – Regulated Electric generation, distribution and transmission 37 137,836 49,547 62,351 35,633 26,718 7,634 18,304 — Natural gas transmission and distribution 58 15,333 — — — — 4,255 — 11,078 Other buildings and improvements 41 2,982 1,256 698 391 307 418 372 238 Nuclear fuel 3,518 2,003 1,515 1,515 — — — — Equipment 13 3,863 997 1,252 753 499 542 490 170 Construction in process 7,850 2,735 3,657 1,884 1,773 385 406 405 Other 10 6,855 1,227 1,953 1,349 594 426 254 498 Total property, plant and equipment (a) 180,806 58,382 72,560 42,060 30,490 13,918 19,970 12,780 Total accumulated depreciation – regulated (b)(c) (55,535) (19,090) (23,586) (15,930) (7,650) (3,674) (6,848) (2,432) Total accumulated depreciation – other (d) (1,968) — — — — — — — Total net property, plant and equipment $ 123,303 $ 39,292 $ 48,974 $ 26,130 $ 22,840 $ 10,244 $ 13,122 $ 10,348 (a) Includes finance leases of $670 million, $336 million, $620 million, $512 million, $108 million and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy and Duke Energy Progress amounts are net of $159 million of accumulated amortization of finance leases. (b) Includes $1,824 million, $1,010 million, $814 million and $814 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. (c) Includes accumulated amortization of finance leases of $84 million and $4 million at Duke Energy Carolinas and Duke Energy Indiana, respectively. (d) Includes accumulated amortization of finance leases of $25 million at Duke Energy. December 31, 2023 Average Remaining Duke Duke Duke Duke Duke Useful Life Duke Energy Progress Energy Energy Energy Energy (in millions) (Years) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Land $ 2,345 $ 581 $ 1,012 $ 502 $ 510 $ 242 $ 133 $ 352 Plant – Regulated Electric generation, distribution and transmission 40 129,985 48,107 57,436 33,171 24,265 7,243 17,199 — Natural gas transmission and distribution 57 14,130 — — — — 3,993 — 10,137 Other buildings and improvements 42 2,887 1,213 677 377 300 421 355 221 Nuclear fuel 3,303 1,866 1,437 1,437 — — — — Equipment 14 3,409 870 1,104 654 450 474 442 143 Construction in process 8,372 2,578 3,941 1,661 2,280 427 427 690 Other 12 6,922 1,455 2,037 1,481 548 410 344 365 Total property, plant and equipment (a) 171,353 56,670 67,644 39,283 28,353 13,210 18,900 11,908 Total accumulated depreciation – regulated (b)(c) (54,323) (19,896) (22,300) (15,227) (7,067) (3,451) (6,501) (2,259) Total accumulated depreciation – other (d) (1,715) — — — — — — — Total net property, plant and equipment $ 115,315 $ 36,774 $ 45,344 $ 24,056 $ 21,286 $ 9,759 $ 12,399 $ 9,649 (a) Includes finance leases of $697 million, $335 million, $615 million, $552 million, $63 million, and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $292 million, $119 million and $173 million, respectively, of accumulated amortization of finance leases. (b) Includes $1,793 million, $991 million, $802 million and $802 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. (c) Includes accumulated amortization of finance leases of $3 million, $67 million, and $4 million at Duke Energy, Duke Energy Carolinas and Duke Energy Indiana, respectively. (d) Includes accumulated amortization of finance leases of $7 million at Duke Energy.
Schedule of Accounts Payable and Supplier Invoices Sold	The following table presents the amounts included within Accounts payable on the Consolidated Balance Sheets sold to the financial institution by our suppliers and the supplier invoices sold to the financial institution under the program included within Net cash provided by operating activities on the Consolidated Statements of Cash Flows as of December 31, 2024, and December 31, 2023. For the Years Ended December 31, 2023 and 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Confirmed obligations outstanding at December 31, 2022 $ 87 $ 6 $ 19 $ 8 $ 11 $ 5 $ — $ 57 Invoices confirmed during the period 228 24 58 22 36 7 — 139 Confirmed invoices paid during the period (265) (30) (74) (30) (44) (12) — (149) Confirmed obligations outstanding at December 31, 2023 $ 50 $ — $ 3 $ — $ 3 $ — $ — $ 47 Invoices confirmed during the period 156 — 4 — 4 — — 152 Confirmed invoices paid during the period (193) — (6) — (6) — — (187) Confirmed obligations outstanding at December 31, 2024 $ 13 $ — $ 1 $ — $ 1 $ — $ — $ 12
Schedule of Excise Taxes	Excise taxes accounted for on a gross basis within both Operating Revenues and Property and other taxes in the Consolidated Statements of Operations were as follows. Years Ended December 31, (in millions) 2024 2023 2022 Duke Energy $ 423 $ 458 $ 449 Duke Energy Carolinas 31 27 47 Progress Energy 285 322 290 Duke Energy Progress 9 5 25 Duke Energy Florida 276 317 265 Duke Energy Ohio 105 106 104 Duke Energy Indiana — 1 7 Piedmont 2 2 1

Dispositions (Tables)

Dispositions (Tables)	12 Months Ended
	Dec. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations	The following table summarizes the Income (Loss) from Discontinued Operations, net of tax recorded on Duke Energy's Consolidated Statements of Operations: Years Ended December 31, (in millions) 2024 2023 2022 Commercial Renewables Disposal Groups $ 12 $ (1,457) $ (1,349) Other (a) (2) 2 26 Income (Loss) from Discontinued Operations, net of tax $ 10 $ (1,455) $ (1,323) (a) Amounts primarily represent income tax adjustments for previously sold businesses not related to the Commercial Renewables Disposal Groups. The following table presents the carrying values of the major classes of Assets held for sale and Liabilities associated with assets held for sale included in Duke Energy's Consolidated Balance Sheets. December 31, (in millions) 2024 2023 Current Assets Held for Sale Other $ 4 $ 14 Total current assets held for sale 4 14 Noncurrent Assets Held for Sale Property, Plant and Equipment Cost 109 247 Accumulated depreciation and amortization (24) (57) Net property, plant and equipment 85 190 Operating lease right-of-use assets, net 4 4 Other — 3 Total other noncurrent assets held for sale 4 7 Total Assets Held for Sale $ 93 $ 211 Current Liabilities Associated with Assets Held for Sale Accounts payable $ 19 $ 9 Taxes accrued 1 3 Current maturities of long-term debt 43 5 Unrealized losses on commodity hedges 13 68 Other 4 37 Total current liabilities associated with assets held for sale 80 122 Noncurrent Liabilities Associated with Assets Held for Sale Long-Term debt — 39 Operating lease liabilities 5 5 Asset retirement obligations 5 8 Unrealized losses on commodity hedges 66 94 Other 13 11 Total other noncurrent liabilities associated with assets held for sale 89 157 Total Liabilities Associated with Assets Held for Sale $ 169 $ 279 As of December 31, 2024, and 2023, the NCI balance was $18 million and $66 million, respectively. The following table presents the results of the Commercial Renewables Disposal Groups, which are included in Income (Loss) from Discontinued Operations, net of tax in Duke Energy's Consolidated Statements of Operations. Years Ended December 31, (in millions) 2024 2023 2022 Operating revenues $ 4 $ 330 $ 465 Operation, maintenance and other 22 302 337 Depreciation and amortization (a) — — 201 Property and other taxes 2 45 36 Other income and expenses, net — (8) 2 Interest expense 4 65 10 Loss on disposal 14 1,725 1,748 Loss before income taxes (38) (1,815) (1,865) Income tax benefit (50) (358) (516) Income (Loss) from discontinued operations $ 12 $ (1,457) $ (1,349) Add: Net (income) loss attributable to noncontrolling interest included in discontinued operations (3) 64 108 Net income (loss) from discontinued operations attributable to Duke Energy Corporation $ 9 $ (1,393) $ (1,241) (a) Upon meeting the criteria for assets held for sale, beginning in November 2022 depreciation and amortization expense were ceased. The Commercial Renewables Disposal Groups' assets held for sale amounts presented above reflect pretax impairments recorded against property, plant and equipment of approximately $123 million and $278 million as of December 31, 2024, and 2023, respectively. The carrying amounts for the remaining assets will be updated, if necessary, based on final disposition amounts. Duke Energy has elected not to separately disclose discontinued operations on Duke Energy's Consolidated Statements of Cash Flows. The following table summarizes Duke Energy's cash flows from discontinued operations related to the Commercial Renewables Disposal Groups. Years Ended December 31, (in millions) 2024 2023 2022 Cash flows provided by (used in): Operating activities $ 7 $ 607 $ 213 Investing activities (13) 122 (802)

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2024
Segment Reporting Information [Line Items]
Business Segment Data	Business segment information is presented in the following tables. Year Ended December 31, 2024 Electric Gas Total Utilities and Utilities and Reportable (in millions) Infrastructure Infrastructure Segments Other Eliminations Total Unaffiliated revenues $ 28,020 $ 2,299 $ 30,319 $ 38 $ — $ 30,357 Intersegment revenues 73 91 164 119 (283) — Total revenues $ 28,093 $ 2,390 $ 30,483 $ 157 $ (283) $ 30,357 Less: Fuel used in electric generation and purchased power $ 9,285 $ — $ 9,285 $ — $ (79) $ 9,206 Cost of natural gas — 565 565 — — 565 Operation, maintenance and other 5,185 478 5,663 (79) (195) 5,389 Depreciation and amortization 5,128 400 5,528 293 (28) 5,793 Property and other taxes 1,305 149 1,454 12 — 1,466 Impairment of assets and other charges 37 — 37 1 — 38 Interest expense 2,006 256 2,262 1,245 (123) 3,384 Income tax expense (benefit) 820 99 919 (329) — 590 Other Segment Items Noncontrolling interests (a) 88 (1) 87 — — 87 Preferred dividends — — — 106 — 106 Preferred redemption costs — — — 16 — 16 Add: Equity in (losses) earnings of unconsolidated affiliates (11) (48) (59) 50 — (9) Add: Other (b) 542 58 600 229 (142) 687 Segment income (loss) (c)(d)(e) $ 4,770 $ 454 $ 5,224 $ (829) $ — $ 4,395 Discontinued Operations 7 Net income available to Duke Energy Corporation Common Stockholders $ 4,402 Add back: Net income (loss) attributable to noncontrolling interest 90 Add back: Preferred dividends 106 Add back: Preferred redemption costs 16 Net income $ 4,614 Capital investments expenditures and acquisitions $ 10,689 $ 1,313 $ 12,002 $ 261 $ — $ 12,263 Segment assets 164,010 18,131 182,141 4,202 — 186,343 (a) Net income (loss) attributable to NCI related to continuing operations. (b) Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net. (c) EU&I includes the following in the referenced captions on the Consolidated Statements of Operations: • $42 million recorde d within Impairment of assets and other charges, $2 million within Operations, maintenance and other, and an $11 million reduction within Interest Expense related to South Carolinas rate case orders for Duke Energy Carolinas and Duke Energy Progress. See Note 4 for further information. • $29 million recorded as a reduction of Operating revenues and $4 million as a reduction within Noncontrolling interests related to a Duke Energy Indiana regulatory liability associated with certain employee post-retirement benefits. See Note 4 for further information. • $17 million recorded as a reduction of Operating revenues related to nonrecurring customer billing adjustments as a result of implementation of a new customer system. • $15 million recorded within Equity in (losses) earnings of unconsolidated affiliates, primarily related to impairments for certain joint venture electric transmission projects, and $4 million within Gains on sales of other assets and other, net. (d) GU&I includes $1 million recorded with Operation, maintenance and other and $3 million as a charge within Other income and expenses on the Consolidated Statements of Operations related to nonrecurring customer billing adjustments as a result of implementation of a new customer system. Additionally, GU&I includes $54 million recorded within Equity in (losses) earnings of unconsolidated affiliates on the Consolidated Statements of Operations related to impairments for certain renewable natural gas investments. See Note 13 for further information. (e) Other includes $16 million recorded as Preferred Redemption Costs on the Consolidated Statements of Operations related to the redemption of Series B Preferred Stock. See Note 20 for further information. Additionally, Other includes $23 million recorded within Operation, maintenance and other on the Consolidated Statements of Operations related to an insurance deductible for Hurricane Helene property losses. Year Ended December 31, 2023 Electric Gas Total Utilities and Utilities and Reportable (in millions) Infrastructure Infrastructure Segments Other Eliminations Total Unaffiliated revenues $ 26,846 $ 2,177 $ 29,023 $ 37 $ — $ 29,060 Intersegment revenues 75 89 164 97 (261) — Total revenues $ 26,921 $ 2,266 $ 29,187 $ 134 $ (261) $ 29,060 Less: Fuel used in electric generation and purchased power $ 9,164 $ — $ 9,164 $ — $ (78) $ 9,086 Cost of natural gas — 593 593 — — 593 Operation, maintenance and other 5,309 455 5,764 36 (175) 5,625 Depreciation and amortization 4,684 349 5,033 248 (28) 5,253 Property and other taxes 1,320 129 1,449 (49) — 1,400 Impairment of assets and other charges 75 (4) 71 14 — 85 Interest expense 1,850 217 2,067 1,097 (150) 3,014 Income tax expense (benefit) 742 116 858 (420) — 438 Other Segment Items Noncontrolling interests (a) 99 (2) 97 — — 97 Preferred dividends — — — 106 — 106 Add: Equity in earnings of unconsolidated affiliates 7 40 47 66 — 113 Add: Other (b) 538 66 604 216 (170) 650 Segment income (loss) (c)(d) $ 4,223 $ 519 $ 4,742 $ (616) $ — $ 4,126 Discontinued operations (1,391) Net income available to Duke Energy Corporation Common Stockholders $ 2,735 Add back: Net income (loss) attributable to noncontrolling interest 33 Add back: Preferred dividends 106 Net income $ 2,874 Capital investments expenditures and acquisitions (e) $ 10,135 $ 1,492 $ 11,627 $ 995 $ — $ 12,622 Segment assets (f) 155,449 17,349 172,798 4,095 — 176,893 (a) Net income (loss) attributable to NCI related to continuing operations. (b) Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net. (c) EU&I includes $35 million recorded with Impairment of assets and other charges and $8 million within Operations, maintenance and other primarily related to the North Carolina rate case order on Duke Energy Carolinas' Consolidated Statements of Operations; it also includes $33 million recorded within Impairment of assets and other charges and $8 million within Operations, maintenance and other primarily related to the North Carolina rate case order on Duke Energy Progress' Consolidated Statements of Operations. See Note 4 for additional information. (d) Other includes $110 million recorded within Operations, maintenance and other and $14 million within Impairments of assets and other charges primarily related to strategic repositioning as the Company transitions to a fully regulated utility on the Consolidated Statements of Operations. See Note 21 for additional information. (e) Other includes capital investments expenditures and acquisitions related to the Commercial Renewables Disposal Groups. (f) Other includes Assets Held for Sale balances related to the Commercial Renewables Disposal Groups. See Note 2 for further information. Year Ended December 31, 2022 Electric Gas Total Utilities and Utilities and Reportable (in millions) Infrastructure Infrastructure Segments Other Eliminations Total Unaffiliated revenues $ 25,990 $ 2,748 $ 28,738 $ 30 $ — $ 28,768 Intersegment revenues 34 92 126 92 (218) — Total revenues $ 26,024 $ 2,840 $ 28,864 $ 122 $ (218) $ 28,768 Less: Fuel used in electric generation and purchased power $ 8,862 $ — $ 8,862 $ — $ (80) $ 8,782 Cost of natural gas — 1,276 1,276 — — 1,276 Operation, maintenance and other 5,354 532 5,886 (23) (129) 5,734 Depreciation and amortization 4,550 327 4,877 236 (27) 5,086 Property and other taxes 1,315 138 1,453 13 — 1,466 Impairment of assets and other charges 374 (12) 362 72 — 434 Interest expense 1,565 182 1,747 778 (86) 2,439 Income tax expense (benefit) 536 8 544 (244) — 300 Other Segment Items Noncontrolling interests (a) 13 — 13 — — 13 Preferred dividends — — — 106 — 106 Add: Equity in earnings of unconsolidated affiliates 7 20 27 86 — 113 Add: Other (b) 467 59 526 (7) (105) 414 Segment income (loss) (c)(d) $ 3,929 $ 468 $ 4,397 $ (737) $ (1) $ 3,659 Discontinued operations (1,215) Net income available to Duke Energy Corporation Common Stockholders $ 2,444 Add back: Net income (loss) attributable to noncontrolling interest (95) Add back: Preferred dividends 106 Net income $ 2,455 Capital investments expenditures and acquisitions (e) $ 8,985 $ 1,295 $ 10,280 $ 1,139 $ — $ 11,419 Segment assets (f) 152,104 16,411 168,515 9,571 — 178,086 (a) Net income (loss) attributable to NCI related to continuing operations. (b) Other for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net. (c) EU&I includes $386 million recorded within Impairment of assets and other charges, $46 million as a reduction within Regulated electric revenues and $34 million within Noncontrolling Interests related to the Duke Energy Indiana court rulings on coal ash on the Consolidated Statements of Operations. See Note 4 for additional information. (d) Other includes $72 million recorded within Impairment of assets and other charges, $71 million within Operations, maintenance and other and a $7 million gain within Gains on sales of other assets related to costs attributable to business transformation, including long-term real estate strategy changes and workforce realignment on the Consolidated Statements of Operations; it also includes $25 million recorded within Operations, maintenance and other related to litigation on the Consolidated Statements of Operations. (e) Other includes capital investments expenditures and acquisitions related to the Commercial Renewables Disposal Groups. (f) Other includes Assets Held for Sale balances related to the Commercial Renewables Disposal Groups. See Note 2 for further information.
Schedule of Revenue, By Products and Services	Products and Services The following table summarizes revenues of the reportable segments by type. Retail Wholesale Retail Total (in millions) Electric Electric Natural Gas Other Revenues 2024 Electric Utilities and Infrastructure $ 24,593 $ 2,219 $ — $ 1,281 $ 28,093 Gas Utilities and Infrastructure — — 2,320 70 2,390 Total Reportable Segments $ 24,593 $ 2,219 $ 2,320 $ 1,351 $ 30,483 2023 Electric Utilities and Infrastructure $ 23,484 $ 2,193 $ — $ 1,244 $ 26,921 Gas Utilities and Infrastructure — — 2,199 67 2,266 Total Reportable Segments $ 23,484 $ 2,193 $ 2,199 $ 1,311 $ 29,187 2022 Electric Utilities and Infrastructure $ 22,036 $ 2,882 $ — $ 1,106 $ 26,024 Gas Utilities and Infrastructure — — 2,535 305 2,840 Total Reportable Segments $ 22,036 $ 2,882 $ 2,535 $ 1,411 $ 28,864
Duke Energy Carolinas
Segment Reporting Information [Line Items]
Business Segment Data	Duke Energy Carolinas has one reportable segment, EU&I. EU&I generates, distributes and sells electricity in North Carolina and South Carolina. EU&I conducts operations primarily through Duke Energy Carolinas. The remainder of Duke Energy Carolinas' operations is presented as Other. Year Ended December 31, 2024 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 9,718 $ — $ 9,718 Less: Fuel used in electric generation and purchased power $ 3,251 $ — $ 3,251 Operation, maintenance and other 1,710 30 1,740 Depreciation and amortization 1,768 — 1,768 Property and other taxes 346 — 346 Impairment of assets and other charges 31 — 31 Interest expense 722 — 722 Income tax expense (benefit) 233 (7) 226 Add: Other segment items (a) 252 (3) 249 Segment income (loss) / Net income $ 1,909 $ (26) $ 1,883 Capital expenditures $ 3,966 $ — $ 3,966 Segment assets 54,782 223 55,005 Year Ended December 31, 2023 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 8,288 $ — $ 8,288 Less: Fuel used in electric generation and purchased power $ 2,524 $ — $ 2,524 Operation, maintenance and other 1,689 85 1,774 Depreciation and amortization 1,593 — 1,593 Property and other taxes 320 — 320 Impairment of assets and other charges 44 — 44 Interest expense 686 — 686 Income tax expense (benefit) 162 (21) 141 Add: Other segment items (a) 267 (3) 264 Segment income (loss) / Net income $ 1,537 $ (67) $ 1,470 Capital expenditures $ 3,733 $ — $ 3,733 Segment assets 51,908 202 52,110 Year Ended December 31, 2022 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 7,857 $ — $ 7,857 Less: Fuel used in electric generation and purchased power $ 2,015 $ — $ 2,015 Operation, maintenance and other 1,845 47 1,892 Depreciation and amortization 1,526 — 1,526 Property and other taxes 340 — 340 Impairment of assets and other charges (18) 44 26 Interest expense 557 — 557 Income tax expense (benefit) 148 (22) 126 Add: Other segment items (a) 228 (3) 225 Segment income (loss) / Net income $ 1,672 $ (72) $ 1,600 Capital expenditures $ 3,304 $ — $ 3,304 Segment assets 49,956 390 50,346 (a) Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Progress Energy
Segment Reporting Information [Line Items]
Business Segment Data	Progress Energy has one reportable segment, EU&I. EU&I generates, distributes and sells electricity in North Carolina, South Carolina and Florida. EU&I conducts operations primarily through its wholly owned subsidiaries, Duke Energy Progress and Duke Energy Florida. The remainder of Progress Energy's operations is presented as Other. Year Ended December 31, 2024 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 13,612 $ 21 $ 13,633 Less: Fuel used in electric generation and purchased power $ 4,755 $ — $ 4,755 Operation, maintenance and other 2,413 50 2,463 Depreciation and amortization 2,393 — 2,393 Property and other taxes 617 — 617 Impairment of assets and other charges 6 — 6 Interest expense 949 115 1,064 Income tax expense (benefit) 465 (39) 426 Add: Other segment items (a) 224 38 262 Segment income (loss) / Net income $ 2,238 $ (67) $ 2,171 Capital expenditures $ 5,252 $ — $ 5,252 Segment assets 67,951 3,685 71,636 Year Ended December 31, 2023 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 13,524 $ 20 $ 13,544 Less: Fuel used in electric generation and purchased power $ 5,026 $ — $ 5,026 Operation, maintenance and other 2,554 82 2,636 Depreciation and amortization 2,151 — 2,151 Property and other taxes 644 — 644 Impairment of assets and other charges 28 — 28 Interest expense 840 114 954 Income tax expense (benefit) 426 (49) 377 Add: Other segment items (a) 210 18 228 Segment income (loss) / Net income $ 2,065 $ (109) $ 1,956 Capital expenditures $ 4,917 $ — $ 4,917 Segment assets 63,182 3,912 67,094 Year Ended December 31, 2022 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 13,106 $ 19 $ 13,125 Less: Fuel used in electric generation and purchased power $ 5,078 $ — $ 5,078 Operation, maintenance and other 2,395 63 2,458 Depreciation and amortization 2,142 — 2,142 Property and other taxes 611 (4) 607 Impairment of assets and other charges 5 7 12 Interest expense 716 128 844 Income tax expense (benefit) 396 (48) 348 Add: Other segment items (a) 205 (13) 192 Segment income (loss) / Net income $ 1,968 $ (140) $ 1,828 Capital expenditures $ 4,317 $ — $ 4,317 Segment assets 62,183 3,896 66,079 (a) Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Progress
Segment Reporting Information [Line Items]
Business Segment Data	Duke Energy Progress has one reportable segment, EU&I. EU&I generates, distributes and sells electricity in North Carolina and South Carolina. EU&I conducts operations primarily through Duke Energy Progress. The remainder of Duke Energy Progress' operations is presented as Other. Year Ended December 31, 2024 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 7,017 $ — $ 7,017 Less: Fuel used in electric generation and purchased power $ 2,409 $ — $ 2,409 Operation, maintenance and other 1,370 18 1,388 Depreciation and amortization 1,336 — 1,336 Property and other taxes 177 — 177 Impairment of assets and other charges 6 — 6 Interest expense 492 1 493 Income tax expense (benefit) 194 (5) 189 Add: Other segment items (a) 138 7 145 Segment income (loss) / Net income $ 1,171 $ (7) $ 1,164 Capital expenditures $ 2,803 $ — $ 2,803 Segment assets 39,402 91 39,493 Year Ended December 31, 2023 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 6,488 $ — $ 6,488 Less: Fuel used in electric generation and purchased power $ 2,203 $ — $ 2,203 Operation, maintenance and other 1,342 37 1,379 Depreciation and amortization 1,266 — 1,266 Property and other taxes 164 — 164 Impairment of assets and other charges 29 — 29 Interest expense 427 — 427 Income tax expense (benefit) 158 (9) 149 Add: Other segment items (a) 128 (1) 127 Segment income (loss) / Net income $ 1,027 $ (29) $ 998 Capital expenditures $ 2,387 $ — $ 2,387 Segment assets 36,820 104 36,924 Year Ended December 31, 2022 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 6,753 $ — $ 6,753 Less: Fuel used in electric generation and purchased power $ 2,492 $ — $ 2,492 Operation, maintenance and other 1,447 28 1,475 Depreciation and amortization 1,187 — 1,187 Property and other taxes 190 — 190 Impairment of assets and other charges 5 2 7 Interest expense 354 — 354 Income tax expense (benefit) 165 (7) 158 Add: Other segment items (a) 119 (1) 118 Segment income (loss) / Net income $ 1,032 $ (24) $ 1,008 Capital expenditures $ 2,070 $ — $ 2,070 Segment assets 36,631 121 36,752 (a) Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Florida
Segment Reporting Information [Line Items]
Business Segment Data	Duke Energy Florida has one reportable segment, EU&I. EU&I generates, distributes and sells electricity in Florida. EU&I conducts operations primarily through Duke Energy Florida. The remainder of Duke Energy Florida's operations is presented as Other. Year Ended December 31, 2024 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 6,595 $ — $ 6,595 Less: Fuel used in electric generation and purchased power $ 2,346 $ — $ 2,346 Operation, maintenance and other 1,043 12 1,055 Depreciation and amortization 1,057 — 1,057 Property and other taxes 440 — 440 Interest expense 457 — 457 Income tax expense (benefit) 271 (3) 268 Add: Other segment items (a) 86 3 89 Segment income (loss) / Net income $ 1,067 $ (6) $ 1,061 Capital expenditures $ 2,449 $ — $ 2,449 Segment assets 28,549 20 28,569 Year Ended December 31, 2023 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 7,036 $ — $ 7,036 Less: Fuel used in electric generation and purchased power $ 2,823 $ — $ 2,823 Operation, maintenance and other 1,212 27 1,239 Depreciation and amortization 885 — 885 Property and other taxes 480 — 480 Impairment of assets and other charges (1) — (1) Interest expense 413 — 413 Income tax expense (benefit) 268 (7) 261 Add: Other segment items (a) 82 (2) 80 Segment income (loss) / Net income $ 1,038 $ (22) $ 1,016 Capital expenditures $ 2,529 $ — $ 2,529 Segment assets 26,362 239 26,601 Year Ended December 31, 2022 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 6,353 $ — $ 6,353 Less: Fuel used in electric generation and purchased power $ 2,586 $ — $ 2,586 Operation, maintenance and other 948 19 967 Depreciation and amortization 955 — 955 Property and other taxes 421 — 421 Impairment of assets and other charges — 4 4 Interest expense 362 — 362 Income tax expense (benefit) 231 (6) 225 Add: Other segment items (a) 86 (10) 76 Segment income (loss) / Net income $ 936 $ (27) $ 909 Capital expenditures $ 2,247 $ — $ 2,247 Segment assets 25,552 2 25,554 (a) Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Ohio
Segment Reporting Information [Line Items]
Business Segment Data	Duke Energy Ohio has two reportable segments, EU&I and GU&I. EU&I transmits and distributes electricity in portions of Ohio and generates, distributes and sells electricity in portions of Northern Kentucky. GU&I transports and sells natural gas in portions of Ohio and Northern Kentucky. Both reportable segments conduct operations primarily through Duke Energy Ohio and its wholly owned subsidiary, Duke Energy Kentucky. The remainder of Duke Energy Ohio's operations is presented as Other. Year Ended December 31, 2024 Electric Gas Total Utilities and Utilities and Reportable Eliminations/ (in millions) Infrastructure Infrastructure Segments Other Total Total revenues $ 1,905 $ 640 $ 2,545 — $ 2,545 Less: Fuel used in electric generation and purchased power $ 538 $ — $ 538 $ — $ 538 Cost of natural gas — 142 142 — 142 Operation, maintenance and other 366 109 475 10 485 Depreciation and amortization 273 131 404 (1) 403 Property and other taxes 306 94 400 — 400 Interest expense 126 68 194 (2) 192 Income tax expense (benefit) 47 18 65 (1) 64 Add: Other segment items (a) 15 5 20 — 20 Segment income (loss) / Net income $ 264 $ 83 $ 347 $ (6) $ 341 Capital expenditures $ 535 $ 280 $ 815 $ — $ 815 Segment assets 8,211 4,506 12,717 51 12,768 Year Ended December 31, 2023 Electric Gas Total Utilities and Utilities and Reportable Eliminations/ (in millions) Infrastructure Infrastructure Segments Other Total Total revenues $ 1,868 $ 639 $ 2,507 $ — $ 2,507 Less: Fuel used in electric generation and purchased power $ 608 $ — 608 $ — 608 Cost of natural gas — 163 163 — 163 Operation, maintenance and other 351 118 469 9 478 Depreciation and amortization 257 110 367 — 367 Property and other taxes 294 70 364 — 364 Impairment of assets and other charges 2 — 2 1 3 Interest expense 116 53 169 — 169 Income tax expense (benefit) 42 23 65 (2) 63 Add: Other segment items (a) 29 14 43 (1) 42 Segment income (loss) / Net income $ 227 $ 116 $ 343 $ (9) $ 334 Capital expenditures $ 520 $ 419 $ 939 $ — $ 939 Segment assets 7,978 4,346 12,324 (108) 12,216 Year Ended December 31, 2022 Electric Gas Total Utilities and Utilities and Reportable Eliminations/ (in millions) Infrastructure Infrastructure Segments Other Total Total revenues $ 1,798 $ 716 $ 2,514 $ — $ 2,514 Less: Fuel used in electric generation and purchased power $ 657 $ — $ 657 $ — $ 657 Cost of natural gas — 261 261 — 261 Operation, maintenance and other 345 170 515 8 523 Depreciation and amortization 221 103 324 — 324 Property and other taxes 288 81 369 — 369 Impairment of assets and other charges 1 (12) (11) 1 (10) Interest expense 86 43 129 — 129 Income tax expense (benefit) 24 (43) (19) (2) (21) Add: Other segment items (a) 13 8 21 (1) 20 Segment income (loss) / Net income $ 189 $ 121 $ 310 $ (8) $ 302 Capital expenditures $ 488 $ 362 $ 850 $ — $ 850 Segment assets 7,504 4,164 11,668 (162) 11,506 (a) Other segment items for EU&I and GU&I includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Duke Energy Indiana
Segment Reporting Information [Line Items]
Business Segment Data	Duke Energy Indiana has one reportable segment, EU&I. EU&I generates, distributes and sells electricity in Indiana. EU&I conducts operations primarily through Duke Energy Indiana. The remainder of Duke Energy Indiana's operations is presented as Other. Year Ended December 31, 2024 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 3,040 $ — $ 3,040 Less: Fuel used in electric generation and purchased power $ 964 $ — $ 964 Operation, maintenance and other 666 5 671 Depreciation and amortization 676 — 676 Property and other taxes 50 — 50 Interest expense 228 1 229 Income tax expense (benefit) 72 (1) 71 Add: Other segment items (a) 62 — 62 Segment income (loss) / Net income $ 446 $ (5) $ 441 Capital expenditures $ 935 $ — $ 935 Segment assets 15,726 1 15,727 Year Ended December 31, 2023 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 3,399 $ — $ 3,399 Less: Fuel used in electric generation and purchased power $ 1,217 $ — $ 1,217 Operation, maintenance and other 695 18 713 Depreciation and amortization 666 — 666 Property and other taxes 59 — 59 Impairment of assets and other charges (1) 1 — Interest expense 213 — 213 Income tax expense (benefit) 115 (5) 110 Add: Other segment items (a) 77 (1) 76 Segment income (loss) / Net income $ 512 $ (15) $ 497 Capital expenditures $ 961 $ — $ 961 Segment assets 14,966 (155) 14,811 Year Ended December 31, 2022 Electric Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 3,922 $ — $ 3,922 Less: Fuel used in electric generation and purchased power $ 1,819 $ — $ 1,819 Operation, maintenance and other 719 10 729 Depreciation and amortization 645 — 645 Property and other taxes 75 — 75 Impairment of assets and other charges 387 1 388 Interest expense 189 — 189 Income tax expense (benefit) (20) (4) (24) Add: Other segment items (a) 38 (2) 36 Segment income (loss) / Net income $ 146 $ (9) $ 137 Capital expenditures $ 877 $ — $ 877 Segment assets 14,864 (210) 14,654 (a) Other segment items includes Gains on sales of other assets and other, net, and Other income and expenses, net.
Piedmont
Segment Reporting Information [Line Items]
Business Segment Data	Piedmont has one reportable segment, GU&I. GU&I distributes and sells natural gas in North Carolina, South Carolina and Tennessee. GU&I conducts operations primarily through Piedmont. The remainder of Piedmont's operations is presented as Other. Year Ended December 31, 2024 Gas Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 1,729 $ — $ 1,729 Less: Cost of natural gas $ 423 $ — $ 423 Operation, maintenance and other 355 4 359 Depreciation and amortization 261 — 261 Property and other taxes 55 — 55 Interest expense 185 — 185 Income tax expense (benefit) 94 1 95 Other Segment Items Add: Equity in earnings of unconsolidated affiliates — 8 8 Add: Other (a) 54 — 54 Segment income (loss) / Net income $ 410 $ 3 $ 413 Capital expenditures $ 1,025 $ — $ 1,025 Segment assets 11,707 92 11,799 Year Ended December 31, 2023 Gas Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 1,628 $ — $ 1,628 Less: Cost of natural gas $ 430 $ — $ 430 Operation, maintenance and other 336 8 344 Depreciation and amortization 237 — 237 Property and other taxes 59 — 59 Impairment of assets and other charges (4) — (4) Interest expense 165 — 165 Income tax expense (benefit) 84 — 84 Other Segment Items Add: Equity in earnings of unconsolidated affiliates — 9 9 Add: Other (a) 59 (2) 57 Segment income (loss) / Net income $ 380 $ (1) $ 379 Capital expenditures $ 1,036 $ — $ 1,036 Segment assets 10,978 89 11,067 Year Ended December 31, 2022 Gas Utilities and Eliminations/ (in millions) Infrastructure Other Total Total revenues $ 2,124 $ — $ 2,124 Less: Cost of natural gas $ 1,015 $ — $ 1,015 Operation, maintenance and other 360 8 368 Depreciation and amortization 222 — 222 Property and other taxes 57 — 57 Impairment of assets and other charges — 18 18 Interest expense 140 — 140 Income tax expense (benefit) 43 (4) 39 Other Segment Items Add: Equity in earnings of unconsolidated affiliates — 8 8 Add: Other (a) 47 3 50 Segment income (loss) / Net income $ 334 $ (11) $ 323 Capital expenditures $ 862 $ — $ 862 Segment assets 10,243 92 10,335 (a) Other includes Gains on sales of other assets and other, net, and Other income and expenses, net.

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2024
Public Utilities, General Disclosures [Line Items]
Schedule of Regulatory Assets	The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets of Duke Energy and Progress Energy. See separate tables below for balances by individual registrant. Duke Energy Progress Energy December 31, December 31, (in millions) 2024 2023 2024 2023 Regulatory Assets AROs – coal ash $ 3,384 $ 3,214 $ 1,335 $ 1,230 Accrued pension and OPEB 2,524 2,389 828 757 Storm cost deferrals 1,951 407 1,238 298 Storm cost securitized balance, net 1,023 890 822 682 AROs – nuclear and other 952 1,179 905 1,127 Nuclear asset securitized balance, net 771 830 771 830 Debt fair value adjustment 719 774 — — COR regulatory asset 646 371 571 337 Deferred fuel and purchased power 588 2,486 282 1,173 Hedge costs deferrals 352 749 126 323 PISCC and deferred operating expenses 331 357 37 42 Retired generation facilities 281 275 202 220 Customer connect project 257 260 116 125 Grid Deferral 255 210 54 51 Incremental COVID-19 expenses 231 237 89 80 Vacation accrual 228 228 43 43 Deferred asset – Lee and Harris COLA 215 252 10 15 Advanced metering infrastructure (AMI) 204 243 70 92 Demand side management (DSM) / Energy efficiency (EE) 199 201 199 191 CEP deferral 195 193 — — NCEMPA deferrals 179 172 179 172 Decoupling 162 115 32 15 Nuclear deferral 134 131 53 42 Deferred pipeline integrity costs 129 133 — — COR settlement 110 115 29 30 Coal plant securitization 102 8 39 8 Derivatives – natural gas supply contracts 94 147 — — Deferred coal ash handling system costs 77 86 17 21 Qualifying facility contract buyouts 62 68 62 68 Tennessee ARM Deferral 33 20 — — Network Integration Transmission Services deferral 31 31 — — Transmission expansion obligation 31 30 — — East Bend deferrals 24 28 — — Propane caverns 24 26 — — Other 512 411 156 119 Total regulatory assets 17,010 17,266 8,265 8,091 Less: Current portion 2,756 3,648 1,647 1,661 Total noncurrent regulatory assets $ 14,254 $ 13,618 $ 6,618 $ 6,430 Regulatory Liabilities COR regulatory liability $ 5,436 $ 5,497 $ 2,984 $ 2,805 Net regulatory liability related to income taxes 5,397 5,901 1,884 2,008 AROs – nuclear and other 2,289 1,673 — — Deferred Nuclear PTC 676 — 95 — Hedge cost deferrals 583 443 281 208 Renewable energy credits 241 237 139 138 Accrued pension and OPEB 232 266 12 — Deferred fuel and purchased power 223 137 94 14 DSM / EE 58 89 — — DOE Settlement — 32 — 32 Other 984 1,133 291 296 Total regulatory liabilities 16,119 15,408 5,780 5,501 Less: Current portion 1,425 1,369 522 418 Total noncurrent regulatory liabilities $ 14,694 $ 14,039 $ 5,258 $ 5,083
Schedule of Regulatory Liabilities	The following tables present the regulatory assets and liabilities recorded on the Consolidated Balance Sheets of Duke Energy and Progress Energy. See separate tables below for balances by individual registrant. Duke Energy Progress Energy December 31, December 31, (in millions) 2024 2023 2024 2023 Regulatory Assets AROs – coal ash $ 3,384 $ 3,214 $ 1,335 $ 1,230 Accrued pension and OPEB 2,524 2,389 828 757 Storm cost deferrals 1,951 407 1,238 298 Storm cost securitized balance, net 1,023 890 822 682 AROs – nuclear and other 952 1,179 905 1,127 Nuclear asset securitized balance, net 771 830 771 830 Debt fair value adjustment 719 774 — — COR regulatory asset 646 371 571 337 Deferred fuel and purchased power 588 2,486 282 1,173 Hedge costs deferrals 352 749 126 323 PISCC and deferred operating expenses 331 357 37 42 Retired generation facilities 281 275 202 220 Customer connect project 257 260 116 125 Grid Deferral 255 210 54 51 Incremental COVID-19 expenses 231 237 89 80 Vacation accrual 228 228 43 43 Deferred asset – Lee and Harris COLA 215 252 10 15 Advanced metering infrastructure (AMI) 204 243 70 92 Demand side management (DSM) / Energy efficiency (EE) 199 201 199 191 CEP deferral 195 193 — — NCEMPA deferrals 179 172 179 172 Decoupling 162 115 32 15 Nuclear deferral 134 131 53 42 Deferred pipeline integrity costs 129 133 — — COR settlement 110 115 29 30 Coal plant securitization 102 8 39 8 Derivatives – natural gas supply contracts 94 147 — — Deferred coal ash handling system costs 77 86 17 21 Qualifying facility contract buyouts 62 68 62 68 Tennessee ARM Deferral 33 20 — — Network Integration Transmission Services deferral 31 31 — — Transmission expansion obligation 31 30 — — East Bend deferrals 24 28 — — Propane caverns 24 26 — — Other 512 411 156 119 Total regulatory assets 17,010 17,266 8,265 8,091 Less: Current portion 2,756 3,648 1,647 1,661 Total noncurrent regulatory assets $ 14,254 $ 13,618 $ 6,618 $ 6,430 Regulatory Liabilities COR regulatory liability $ 5,436 $ 5,497 $ 2,984 $ 2,805 Net regulatory liability related to income taxes 5,397 5,901 1,884 2,008 AROs – nuclear and other 2,289 1,673 — — Deferred Nuclear PTC 676 — 95 — Hedge cost deferrals 583 443 281 208 Renewable energy credits 241 237 139 138 Accrued pension and OPEB 232 266 12 — Deferred fuel and purchased power 223 137 94 14 DSM / EE 58 89 — — DOE Settlement — 32 — 32 Other 984 1,133 291 296 Total regulatory liabilities 16,119 15,408 5,780 5,501 Less: Current portion 1,425 1,369 522 418 Total noncurrent regulatory liabilities $ 14,694 $ 14,039 $ 5,258 $ 5,083
Schedule of Potential Plant Retirements
Total Storm Registration Costs Across Subsidiary Registrants	Total estimated costs for storm restoration and rebuilding of infrastructure, including capital expenditures, for hurricanes Debby, Helene and Milton, net of expected insurance recoveries, are estimated to be approximately $2.8 billion, of which approximately $2.6 billion had been incurred as of December 31, 2024, with $0.2 billion estimated to be incurred for rebuilding in 2025. The following shows the total cost estimates for the registrants that were primarily impacted: (in millions) Cost Estimate (a) Duke Energy Carolinas $ 1,150 Duke Energy Progress 450 Duke Energy Florida 1,150 (a) These estimates could change as the rebuilding of infrastructure is finalized. Duke Energy Florida was the only jurisdiction materially impacted by Hurricane Milton. Duke Energy Carolinas and Duke Energy Progress
Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Schedule of Regulatory Assets	The following tables present the regulatory assets and liabilities recorded on Duke Energy Carolinas' Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) AROs – coal ash $ 1,481 $ 1,559 (g) (b) Storm cost deferrals 691 97 Yes (b) Accrued pension and OPEB 668 671 (h) Deferred fuel and purchased power 298 1,293 (e) 2026 Deferred asset – Lee COLA 205 237 (b) Hedge costs deferrals 202 405 (b) Storm cost securitized balance, net 201 208 Yes 2041 Grid Deferral (c) 201 159 Yes (b) Incremental COVID-19 expenses 137 152 Yes (b) AMI (c) 114 125 Yes (b) Vacation accrual 86 87 2025 Nuclear deferral 81 89 2026 COR settlement (c) 81 85 Yes (b) Coal plant securitization 63 — Yes (b) Deferred coal ash handling system costs (c) 60 65 Yes (b) Customer connect project (c) 54 58 Yes (b) Retired generation facilities (c) 54 26 Yes (b) PISCC and deferred operating expenses 42 48 Yes (b) Decoupling 24 — Yes (b) Other 141 116 (b) Total regulatory assets 4,884 5,480 Less: Current portion 685 1,564 Total noncurrent regulatory assets $ 4,199 $ 3,916 Regulatory Liabilities (a) AROs – nuclear and other $ 2,289 1,673 (b) Net regulatory liability related to income taxes (d) 1,951 $ 2,200 Yes (b) COR regulatory liability (c) 1,479 1,641 Yes (f) Deferred Nuclear PTC 581 — Yes 2030 Hedge cost deferrals 199 158 (b) Deferred fuel and purchased power 108 85 (e) 2026 Renewable energy credits 102 99 Yes (b) DSM / EE (c) 53 87 Yes (i) Accrued pension and OPEB 35 106 (h) Other 413 528 (b) Total regulatory liabilities 7,210 6,577 Less: Current portion 618 587 Total noncurrent regulatory liabilities $ 6,592 $ 5,990 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base. (e) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina. (f) Recovered over the life of the associated assets. (g) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (h) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. (i) Includes incentives on DSM/EE investments and is recovered or refunded through an annual rider mechanism.
Schedule of Regulatory Liabilities	The following tables present the regulatory assets and liabilities recorded on Duke Energy Carolinas' Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) AROs – coal ash $ 1,481 $ 1,559 (g) (b) Storm cost deferrals 691 97 Yes (b) Accrued pension and OPEB 668 671 (h) Deferred fuel and purchased power 298 1,293 (e) 2026 Deferred asset – Lee COLA 205 237 (b) Hedge costs deferrals 202 405 (b) Storm cost securitized balance, net 201 208 Yes 2041 Grid Deferral (c) 201 159 Yes (b) Incremental COVID-19 expenses 137 152 Yes (b) AMI (c) 114 125 Yes (b) Vacation accrual 86 87 2025 Nuclear deferral 81 89 2026 COR settlement (c) 81 85 Yes (b) Coal plant securitization 63 — Yes (b) Deferred coal ash handling system costs (c) 60 65 Yes (b) Customer connect project (c) 54 58 Yes (b) Retired generation facilities (c) 54 26 Yes (b) PISCC and deferred operating expenses 42 48 Yes (b) Decoupling 24 — Yes (b) Other 141 116 (b) Total regulatory assets 4,884 5,480 Less: Current portion 685 1,564 Total noncurrent regulatory assets $ 4,199 $ 3,916 Regulatory Liabilities (a) AROs – nuclear and other $ 2,289 1,673 (b) Net regulatory liability related to income taxes (d) 1,951 $ 2,200 Yes (b) COR regulatory liability (c) 1,479 1,641 Yes (f) Deferred Nuclear PTC 581 — Yes 2030 Hedge cost deferrals 199 158 (b) Deferred fuel and purchased power 108 85 (e) 2026 Renewable energy credits 102 99 Yes (b) DSM / EE (c) 53 87 Yes (i) Accrued pension and OPEB 35 106 (h) Other 413 528 (b) Total regulatory liabilities 7,210 6,577 Less: Current portion 618 587 Total noncurrent regulatory liabilities $ 6,592 $ 5,990 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base. (e) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina. (f) Recovered over the life of the associated assets. (g) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (h) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. (i) Includes incentives on DSM/EE investments and is recovered or refunded through an annual rider mechanism.
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Schedule of Regulatory Assets	The following tables present the regulatory assets and liabilities recorded on Duke Energy Progress' Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) AROs – coal ash $ 1,322 $ 1,218 (g) (b) AROs – nuclear and other 900 1,110 (c) Storm cost securitized balance, net 822 682 Yes (b) Accrued pension and OPEB 439 408 (j) Deferred fuel and purchased power 277 579 (e) 2026 Storm cost deferrals 276 228 Yes (b) DSM/EE (d) 188 182 Yes (h) NCEMPA deferrals (d) 179 172 (f) 2042 Retired generation facilities (d) 108 126 Yes (b) Incremental COVID-19 expenses 89 80 (b) Hedge costs deferrals 85 260 (b) AMI (d) 54 68 Yes (b) Grid Deferral (d) 54 51 Yes (b) Nuclear deferral 53 42 2026 Customer connect project (d) 45 49 Yes (b) Vacation accrual 43 43 2025 Coal plant securitization 39 8 Yes (b) PISCC and deferred operating expenses 37 42 Yes 2054 Decoupling 32 15 Yes (b) COR settlement (d) 29 30 Yes (b) Deferred coal ash handling system costs (d) 17 21 Yes (b) Deferred asset – Harris COLA 10 15 (b) Other 83 59 (b) Total regulatory assets 5,181 5,488 Less: Current portion 626 942 Total noncurrent regulatory assets $ 4,555 $ 4,546 Regulatory Liabilities (a) COR regulatory liability $ 2,984 2,805 (i) Net regulatory liability related to income taxes (k) 1,320 $ 1,420 Yes (b) Hedge cost deferrals 151 87 (b) Renewable energy credits 139 138 Yes (b) Deferred Nuclear PTC 95 — Yes (b) Accrued pension and OPEB 12 — (j) Deferred fuel and purchased power 10 14 (e) 2026 Other 207 211 (b) Total regulatory liabilities 4,918 4,675 Less: Current portion 348 300 Total noncurrent regulatory liabilities $ 4,570 $ 4,375 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Recovery period for costs related to nuclear facilities runs through the decommissioning period of each unit. (d) Included in rate base. (e) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina. (f) South Carolina retail allocated costs are earning a return. (g) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (h) Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism. (i) Recovered over the life of the associated assets. (j) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. (k) Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base.
Schedule of Regulatory Liabilities	The following tables present the regulatory assets and liabilities recorded on Duke Energy Progress' Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) AROs – coal ash $ 1,322 $ 1,218 (g) (b) AROs – nuclear and other 900 1,110 (c) Storm cost securitized balance, net 822 682 Yes (b) Accrued pension and OPEB 439 408 (j) Deferred fuel and purchased power 277 579 (e) 2026 Storm cost deferrals 276 228 Yes (b) DSM/EE (d) 188 182 Yes (h) NCEMPA deferrals (d) 179 172 (f) 2042 Retired generation facilities (d) 108 126 Yes (b) Incremental COVID-19 expenses 89 80 (b) Hedge costs deferrals 85 260 (b) AMI (d) 54 68 Yes (b) Grid Deferral (d) 54 51 Yes (b) Nuclear deferral 53 42 2026 Customer connect project (d) 45 49 Yes (b) Vacation accrual 43 43 2025 Coal plant securitization 39 8 Yes (b) PISCC and deferred operating expenses 37 42 Yes 2054 Decoupling 32 15 Yes (b) COR settlement (d) 29 30 Yes (b) Deferred coal ash handling system costs (d) 17 21 Yes (b) Deferred asset – Harris COLA 10 15 (b) Other 83 59 (b) Total regulatory assets 5,181 5,488 Less: Current portion 626 942 Total noncurrent regulatory assets $ 4,555 $ 4,546 Regulatory Liabilities (a) COR regulatory liability $ 2,984 2,805 (i) Net regulatory liability related to income taxes (k) 1,320 $ 1,420 Yes (b) Hedge cost deferrals 151 87 (b) Renewable energy credits 139 138 Yes (b) Deferred Nuclear PTC 95 — Yes (b) Accrued pension and OPEB 12 — (j) Deferred fuel and purchased power 10 14 (e) 2026 Other 207 211 (b) Total regulatory liabilities 4,918 4,675 Less: Current portion 348 300 Total noncurrent regulatory liabilities $ 4,570 $ 4,375 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Recovery period for costs related to nuclear facilities runs through the decommissioning period of each unit. (d) Included in rate base. (e) Pays interest on over-recovered costs in North Carolina. Includes certain purchased power costs in North Carolina and South Carolina and costs of distributed energy in South Carolina. The asset balance principally relates to North Carolina costs while the liability balance relates to South Carolina. (f) South Carolina retail allocated costs are earning a return. (g) Earns a debt and equity return on coal ash expenditures for North Carolina and South Carolina retail customers as permitted by various regulatory orders. (h) Includes incentives on DSM/EE investments and is recovered through an annual rider mechanism. (i) Recovered over the life of the associated assets. (j) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail. (k) Includes regulatory liabilities related to the change in the federal tax rate as a result of the Tax Act and the change in the North Carolina tax rate. Portions are included in rate base.
Duke Energy Florida
Public Utilities, General Disclosures [Line Items]
Schedule of Regulatory Assets	The following tables present the regulatory assets and liabilities recorded on Duke Energy Florida's Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) Storm cost deferrals (c) $ 962 70 (e) (b) Nuclear asset securitized balance, net 771 830 2036 COR regulatory asset 571 337 (d) (b) Accrued pension and OPEB (c) 389 349 Yes (f) Retired generation facilities (c) 94 94 Yes 2044 Customer connect project (c) 71 76 Yes 2037 Qualifying facility contract buyouts (c) 62 68 Yes 2034 Hedge costs deferrals (c) 41 63 Yes 2038 AMI (c) 16 24 Yes 2032 AROs – coal ash 13 $ 12 (b) AROs – nuclear and other 5 17 (b) Deferred fuel and purchased power 5 594 (e) 2025 Other 86 69 (d) (b) Total regulatory assets 3,086 2,603 Less: Current portion 1,022 720 Total noncurrent regulatory assets $ 2,064 $ 1,883 Regulatory Liabilities (a) Net regulatory liability related to income taxes (c) $ 564 $ 588 (b) Hedge cost deferrals (c) 130 121 Yes (b) DOE Settlement — 32 Deferred fuel and purchased power (c) 84 — (e) 2025 Other 84 85 (d) (b) Total regulatory liabilities 862 826 Less: Current portion 174 118 Total noncurrent regulatory liabilities $ 688 $ 708 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Certain costs earn/pay a return. (e) Earns commercial paper rate. (f) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Schedule of Regulatory Liabilities	The following tables present the regulatory assets and liabilities recorded on Duke Energy Florida's Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) Storm cost deferrals (c) $ 962 70 (e) (b) Nuclear asset securitized balance, net 771 830 2036 COR regulatory asset 571 337 (d) (b) Accrued pension and OPEB (c) 389 349 Yes (f) Retired generation facilities (c) 94 94 Yes 2044 Customer connect project (c) 71 76 Yes 2037 Qualifying facility contract buyouts (c) 62 68 Yes 2034 Hedge costs deferrals (c) 41 63 Yes 2038 AMI (c) 16 24 Yes 2032 AROs – coal ash 13 $ 12 (b) AROs – nuclear and other 5 17 (b) Deferred fuel and purchased power 5 594 (e) 2025 Other 86 69 (d) (b) Total regulatory assets 3,086 2,603 Less: Current portion 1,022 720 Total noncurrent regulatory assets $ 2,064 $ 1,883 Regulatory Liabilities (a) Net regulatory liability related to income taxes (c) $ 564 $ 588 (b) Hedge cost deferrals (c) 130 121 Yes (b) DOE Settlement — 32 Deferred fuel and purchased power (c) 84 — (e) 2025 Other 84 85 (d) (b) Total regulatory liabilities 862 826 Less: Current portion 174 118 Total noncurrent regulatory liabilities $ 688 $ 708 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Certain costs earn/pay a return. (e) Earns commercial paper rate. (f) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Schedule of Regulatory Assets	The following tables present the regulatory assets and liabilities recorded on Duke Energy Ohio's Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) CEP deferral $ 195 193 Yes (b) Accrued pension and OPEB 131 123 (d) COR regulatory asset 75 34 (b) Customer connect project 44 49 (b) Network Integration Transmission Services deferral 31 31 Yes (b) Transmission expansion obligation 31 30 (b) Decoupling 29 25 (b) Deferred pipeline integrity costs 28 30 Yes (b) East Bend deferrals (c) 24 28 Yes (b) Propane caverns 24 26 (b) PISCC and deferred operating expenses (c) 15 15 Yes 2083 AROs – coal ash 14 $ 17 Yes (b) Deferred fuel and purchased gas costs 8 20 2025 AMI 8 13 (b) Storm cost deferrals 5 12 2025 Other 131 103 (b) Total regulatory assets 793 749 Less: Current portion 88 73 Total noncurrent regulatory assets $ 705 $ 676 Regulatory Liabilities (a) Net regulatory liability related to income taxes $ 432 $ 466 (b) Accrued pension and OPEB 14 17 (d) Deferred fuel and purchased gas costs — 15 2025 Other 53 55 (b) Total regulatory liabilities 499 553 Less: Current portion 34 56 Total noncurrent regulatory liabilities $ 465 $ 497 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Schedule of Regulatory Liabilities	The following tables present the regulatory assets and liabilities recorded on Duke Energy Ohio's Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) CEP deferral $ 195 193 Yes (b) Accrued pension and OPEB 131 123 (d) COR regulatory asset 75 34 (b) Customer connect project 44 49 (b) Network Integration Transmission Services deferral 31 31 Yes (b) Transmission expansion obligation 31 30 (b) Decoupling 29 25 (b) Deferred pipeline integrity costs 28 30 Yes (b) East Bend deferrals (c) 24 28 Yes (b) Propane caverns 24 26 (b) PISCC and deferred operating expenses (c) 15 15 Yes 2083 AROs – coal ash 14 $ 17 Yes (b) Deferred fuel and purchased gas costs 8 20 2025 AMI 8 13 (b) Storm cost deferrals 5 12 2025 Other 131 103 (b) Total regulatory assets 793 749 Less: Current portion 88 73 Total noncurrent regulatory assets $ 705 $ 676 Regulatory Liabilities (a) Net regulatory liability related to income taxes $ 432 $ 466 (b) Accrued pension and OPEB 14 17 (d) Deferred fuel and purchased gas costs — 15 2025 Other 53 55 (b) Total regulatory liabilities 499 553 Less: Current portion 34 56 Total noncurrent regulatory liabilities $ 465 $ 497 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Duke Energy Indiana
Public Utilities, General Disclosures [Line Items]
Schedule of Regulatory Assets	The following tables present the regulatory assets and liabilities recorded on Duke Energy Indiana's Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) AROs – coal ash $ 554 $ 408 Yes (b) PISCC and deferred operating expenses (c) 237 241 Yes (b) Accrued pension and OPEB 212 208 (e) Retired generation facilities (c) 25 29 Yes 2030 Hedge costs deferrals 23 19 (b) Customer connect project 19 19 (b) Storm cost deferrals 17 11 (b) AMI 12 13 2031 Other 54 48 (b) Total regulatory assets 1,153 996 Less: Current portion 113 102 Total noncurrent regulatory assets $ 1,040 $ 894 Regulatory Liabilities (a) Net regulatory liability related to income taxes $ 725 $ 794 (b) COR regulatory liability 434 496 (d) Accrued pension and OPEB 139 109 (e) Hedge cost deferrals 103 77 (b) Deferred fuel and purchased power 21 23 2025 Other 165 169 (b) Total regulatory liabilities 1,587 1,668 Less: Current portion 183 209 Total noncurrent regulatory liabilities $ 1,404 $ 1,459 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Refunded over the life of the associated assets. (e) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Schedule of Regulatory Liabilities	The following tables present the regulatory assets and liabilities recorded on Duke Energy Indiana's Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) AROs – coal ash $ 554 $ 408 Yes (b) PISCC and deferred operating expenses (c) 237 241 Yes (b) Accrued pension and OPEB 212 208 (e) Retired generation facilities (c) 25 29 Yes 2030 Hedge costs deferrals 23 19 (b) Customer connect project 19 19 (b) Storm cost deferrals 17 11 (b) AMI 12 13 2031 Other 54 48 (b) Total regulatory assets 1,153 996 Less: Current portion 113 102 Total noncurrent regulatory assets $ 1,040 $ 894 Regulatory Liabilities (a) Net regulatory liability related to income taxes $ 725 $ 794 (b) COR regulatory liability 434 496 (d) Accrued pension and OPEB 139 109 (e) Hedge cost deferrals 103 77 (b) Deferred fuel and purchased power 21 23 2025 Other 165 169 (b) Total regulatory liabilities 1,587 1,668 Less: Current portion 183 209 Total noncurrent regulatory liabilities $ 1,404 $ 1,459 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Refunded over the life of the associated assets. (e) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Piedmont
Public Utilities, General Disclosures [Line Items]
Schedule of Regulatory Assets	The following tables present the regulatory assets and liabilities recorded on Piedmont's Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) Accrued pension and OPEB (c) 144 129 (g) Deferred pipeline integrity costs (c) 101 103 2034 Derivatives – natural gas supply contracts (f) 94 147 Decoupling 77 75 (e) (b) Tennessee ARM Deferral 33 20 (e) (b) AROs – nuclear and other 29 $ 26 (d) Customer connect project (c) 24 9 2030 Vacation accrual 14 13 2025 Pipeline Integrity Management – Transmission/Distribution 14 — (b) Other 49 49 (e) (b) Total regulatory assets 579 571 Less: Current portion 158 161 Total noncurrent regulatory assets $ 421 $ 410 Regulatory Liabilities (a) COR regulatory liability (c) $ 539 555 (d) Net regulatory liability related to income taxes 405 $ 433 (b) Other 80 98 (e) (b) Total regulatory liabilities 1,024 1,086 Less: Current portion 68 98 Total noncurrent regulatory liabilities $ 956 $ 988 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Recovery over the life of the associated assets. (e) Certain costs earn/pay a return. (f) Balance will fluctuate with changes in the market. Current contracts extend into 2031. (g) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.
Schedule of Regulatory Liabilities	The following tables present the regulatory assets and liabilities recorded on Piedmont's Consolidated Balance Sheets. December 31, Earns/Pays Recovery/Refund (in millions) 2024 2023 a Return Period Ends Regulatory Assets (a) Accrued pension and OPEB (c) 144 129 (g) Deferred pipeline integrity costs (c) 101 103 2034 Derivatives – natural gas supply contracts (f) 94 147 Decoupling 77 75 (e) (b) Tennessee ARM Deferral 33 20 (e) (b) AROs – nuclear and other 29 $ 26 (d) Customer connect project (c) 24 9 2030 Vacation accrual 14 13 2025 Pipeline Integrity Management – Transmission/Distribution 14 — (b) Other 49 49 (e) (b) Total regulatory assets 579 571 Less: Current portion 158 161 Total noncurrent regulatory assets $ 421 $ 410 Regulatory Liabilities (a) COR regulatory liability (c) $ 539 555 (d) Net regulatory liability related to income taxes 405 $ 433 (b) Other 80 98 (e) (b) Total regulatory liabilities 1,024 1,086 Less: Current portion 68 98 Total noncurrent regulatory liabilities $ 956 $ 988 (a) Regulatory assets and liabilities are excluded from rate base unless otherwise noted. (b) The expected recovery or refund period varies or has not been determined. (c) Included in rate base. (d) Recovery over the life of the associated assets. (e) Certain costs earn/pay a return. (f) Balance will fluctuate with changes in the market. Current contracts extend into 2031. (g) Recovered primarily over the average remaining service periods or life expectancies of employees covered by the benefit plans. See Note 23 for additional detail.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of Legal Reserves	The following table contains information regarding reserves for probable and estimable costs related to the various environmental sites. These reserves are recorded in Accounts Payable within Other Current Liabilities and Other within Other Noncurrent Liabilities (in millions) December 31, 2024 December 31, 2023 Reserves for Environmental Remediation Duke Energy $ 73 $ 88 Duke Energy Carolinas 24 23 Progress Energy 19 19 Duke Energy Progress 9 9 Duke Energy Florida 10 10 Duke Energy Ohio 21 36 Duke Energy Indiana 2 2 Piedmont 7 7
Schedule of Purchase Power Obligations	The following table presents executory purchased power contracts with terms exceeding one year, excluding contracts classified as leases. Minimum Purchase Amount at December 31, 2024 Contract (in millions) Expiration 2025 2026 2027 2028 2029 Thereafter Total Duke Energy Progress (a) 2028-2042 $ 22 $ 18 $ 19 $ 18 $ 3 $ 31 $ 111 Duke Energy Indiana (b) 2026 33 12 — — — — 45 (a) Contracts represent between 18% and 100% of net plant output. (b) Share of net plant output varies.
Schedule of Natural Gas Supply Contract Commitments	The following table presents future unconditional purchase obligations under natural gas supply and capacity contracts as of December 31, 2024. (in millions) 2025 2026 2027 2028 2029 Thereafter Total Duke Energy Ohio $ 104 $ 75 $ 71 $ 69 $ 65 $ 554 $ 938 Piedmont 369 366 322 241 233 695 2,226

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2024
Leases [Abstract]
Lease Costs and Cash Flows Information	The following tables present the components of lease expense. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Operating lease expense (a) $ 275 $ 66 $ 173 $ 82 $ 91 $ 12 $ 23 $ 2 Short-term lease expense (a) 7 — 3 1 2 — 1 — Variable lease expense (a) 33 2 29 19 10 — 1 1 Finance lease expense Amortization of leased assets (b) 113 7 46 38 8 — — — Interest on lease liabilities (c) 41 31 44 41 3 — 1 — Total finance lease expense 154 38 90 79 11 — 1 — Total lease expense $ 469 $ 106 $ 295 $ 181 $ 114 $ 12 $ 26 $ 3 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Operating lease expense (a) $ 236 $ 41 $ 157 $ 80 $ 77 $ 11 $ 17 $ 2 Short-term lease expense (a) 5 — 2 1 1 — 1 — Variable lease expense (a) 27 2 22 11 11 — — 1 Finance lease expense Amortization of leased assets (b) 160 7 57 35 22 — — — Interest on lease liabilities (c) 46 31 45 43 2 — 1 — Total finance lease expense 206 38 102 78 24 — 1 — Total lease expense $ 474 $ 81 $ 283 $ 170 $ 113 $ 11 $ 19 $ 3 (a) Included in Operations, maintenance and other, except for expense related to barges and railcars which is included in Fuel used in electric generation and purchased power on the Consolidated Statements of Operations. (b) Included in Depreciation and amortization on the Consolidated Statements of Operations. (c) Included in Interest Expense on the Consolidated Statements of Operations. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Cash paid for amounts included in the measurement of lease liabilities (a) Operating cash flows from operating leases $ 250 $ 24 $ 122 $ 57 $ 65 $ 1 $ 8 $ 1 Operating cash flows from finance leases 41 31 44 41 3 — 1 — Financing cash flows from finance leases 113 7 46 38 8 — — — Lease assets obtained in exchange for new lease liabilities (non-cash) Operating $ 322 $ 50 $ 43 $ 3 $ 40 $ — $ 7 $ 3 Finance 81 1 55 — 55 — 1 — Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Cash paid for amounts included in the measurement of lease liabilities (a) Operating cash flows from operating leases $ 228 $ 18 $ 123 $ 64 $ 59 $ 2 $ 7 $ — Operating cash flows from finance leases 46 31 45 43 2 — 1 — Financing cash flows from finance leases 160 7 57 35 22 — — — Lease assets obtained in exchange for new lease liabilities (non-cash) Operating $ 286 $ 14 $ 92 $ 1 $ 91 $ 2 $ 6 $ 2 Finance 36 — — — — — — —
Operating Lease Maturities	The following table presents operating lease maturities and a reconciliation of the undiscounted cash flows to operating lease liabilities. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont 2025 $ 256 $ 24 $ 121 $ 55 $ 66 $ 1 $ 7 $ 5 2026 241 21 124 59 65 1 7 1 2027 191 14 97 60 37 1 5 1 2028 153 11 82 59 23 1 3 1 2029 120 10 74 52 22 1 3 — Thereafter 458 53 307 156 151 4 24 — Total operating lease payments 1,419 133 805 441 364 9 49 8 Less: Present value discount (254) (26) (151) (67) (84) (2) (10) — Total operating lease liabilities (a) $ 1,165 $ 107 $ 654 $ 374 $ 280 $ 7 $ 39 $ 8 (a) Certain operating lease payments include renewal options that are reasonably certain to be exercised.
Maturities of Finance Lease Liabilities	The following table presents finance lease maturities and a reconciliation of the undiscounted cash flows to finance lease liabilities. December 31, 2024 Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Indiana 2025 $ 86 $ 38 $ 91 $ 80 $ 11 $ 1 2026 87 38 92 81 11 1 2027 82 38 89 81 8 1 2028 79 38 87 81 6 1 2029 79 38 88 81 7 1 Thereafter 489 351 444 393 51 21 Total finance lease payments 902 541 891 797 94 26 Less: Amounts representing interest (332) (271) (310) (282) (28) (16) Total finance lease liabilities $ 570 $ 270 $ 581 $ 515 $ 66 $ 10
Balance Sheet Amounts Recorded for Operating and Finance Leases	The following tables contain additional information related to leases. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Classification Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Assets Operating Operating lease ROU assets, net $ 1,148 $ 98 $ 625 $ 348 $ 277 $ 6 $ 37 $ 4 Finance Net property, plant and equipment 645 252 620 512 108 — 6 — Total lease assets $ 1,793 $ 350 $ 1,245 $ 860 $ 385 $ 6 $ 43 $ 4 Liabilities Current Operating Other current liabilities $ 208 $ 20 $ 97 $ 42 $ 55 $ 1 $ 6 $ 1 Finance Current maturities of long-term debt 46 8 48 41 7 — — — Noncurrent Operating Operating lease liabilities 957 87 557 332 225 6 33 7 Finance Long-Term Debt 524 262 533 474 59 — 10 — Total lease liabilities $ 1,735 $ 377 $ 1,235 $ 889 $ 346 $ 7 $ 49 $ 8 December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Classification Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Assets Operating Operating lease ROU assets, net $ 1,092 $ 78 $ 617 $ 318 $ 299 $ 16 $ 50 $ 4 Finance Net property, plant and equipment 687 268 615 552 63 — 6 — Total lease assets $ 1,779 $ 346 $ 1,232 $ 870 $ 362 $ 16 $ 56 $ 4 Liabilities Current Operating Other current liabilities $ 188 $ 15 $ 94 $ 45 $ 49 $ 1 $ 6 $ — Finance Current maturities of long-term debt 115 8 46 38 8 — — — Noncurrent Operating Operating lease liabilities 917 75 544 293 251 16 46 10 Finance Long-Term Debt 524 269 525 514 11 — 9 — Total lease liabilities $ 1,744 $ 367 $ 1,209 $ 890 $ 319 $ 17 $ 61 $ 10
Supplemental Lease Information	December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Weighted average remaining lease term (years) Operating leases 8 9 9 8 11 11 11 4 Finance leases 11 15 11 10 15 — 20 — Weighted average discount rate (a) Operating leases 4.3 % 4.3 % 4.0 % 3.9 % 4.2 % 4.1 % 4.0 % 3.9 % Finance leases 8.4 % 11.5 % 8.9 % 9.2 % 5.9 % — % 11.7 % — % December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Weighted average remaining lease term (years) Operating leases 9 10 10 9 11 13 13 4 Finance leases 11 16 11 11 18 — 22 3 Weighted average discount rate (a) Operating leases 3.1 % 4.0 % 3.8 % 3.6 % 4.0 % 4.2 % 3.9 % 2.4 % Finance leases 8.5 % 11.5 % 9.1 % 9.2 % 7.6 % — % 11.9 % 5.4 % (a) The discount rate is calculated using the rate implicit in a lease if it is readily determinable. Generally, the rate used by the lessor is not provided to Duke Energy and in these cases the incremental borrowing rate is used. Duke Energy will typically use its fully collateralized incremental borrowing rate as of the commencement date to calculate and record the lease. The incremental borrowing rate is influenced by the lessee’s credit rating and lease term and as such may differ for individual leases, embedded leases or portfolios of leased assets.

Debt and Credit Facilities (Tab

Debt and Credit Facilities (Tables)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Schedule of Debt	The following tables summarize outstanding debt. December 31, 2024 Weighted Average Duke Duke Duke Duke Duke Interest Duke Energy Progress Energy Energy Energy Energy (in millions) Rate Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Unsecured debt, maturing 2025-2082 4.53 % $ 34,283 $ 1,605 $ 2,085 $ 185 $ 250 $ 1,380 $ 390 $ 4,030 Secured debt, maturing 2025-2052 3.75 % 3,672 1,463 2,147 1,269 879 — — — First mortgage bonds, maturing 2025-2074 (a) 4.24 % 39,842 13,955 19,223 9,974 9,247 2,722 3,937 — Finance leases, maturing 2027-2054 570 270 581 515 66 — 10 — Tax-exempt bonds, maturing 2027-2046 (b) 3.85 % 1,331 — 500 500 — 77 352 — Notes payable and commercial paper (c) 4.67 % 4,213 — — — — — — — Money pool/intercompany borrowings — 300 1,227 761 467 189 160 739 Fair value hedge carrying value adjustment (82) — — — — — — — Unamortized debt discount and premium, net (d) 845 (20) (44) (24) (19) (23) (16) (8) Unamortized debt issuance costs (e) (401) (83) (146) (65) (76) (18) (25) (19) Total debt 4.37 % $ 84,273 $ 17,490 $ 25,573 $ 13,115 $ 10,814 $ 4,327 $ 4,808 $ 4,742 Short-term notes payable and commercial paper (3,584) — — — — — — — Short-term money pool/intercompany borrowings — — (1,077) (611) (466) (162) (10) (739) Current maturities of long-term debt (f) (4,349) (521) (1,517) (983) (534) (245) (4) (205) Total long-term debt (f) $ 76,340 $ 16,969 $ 22,979 $ 11,521 $ 9,814 $ 3,920 $ 4,794 $ 3,798 (a) Substantially all electric utility property is mortgaged under mortgage bond indentures. (b) Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility. (c) Includes $625 million classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy's commercial paper progra m w as 13 days. (d) Duke Energy includes $925 million and $56 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively. (e) Duke Energy includes $23 million in purchase accounting adjustments primarily related to the merger with Progress Energy. (f) Refer to Note 18 for additional information on amounts from consolidated VIEs. December 31, 2023 Weighted Average Duke Duke Duke Duke Duke Interest Duke Energy Progress Energy Energy Energy Energy (in millions) Rate Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Unsecured debt, maturing 2024-2082 4.36 % $ 30,435 $ 1,150 $ 1,800 $ — $ 150 $ 1,155 $ 393 $ 3,695 Secured debt, maturing 2024-2052 4.23 % 4,202 1,441 2,379 1,121 1,258 — — — First mortgage bonds, maturing 2025-2073 (a) 4.18 % 37,443 12,955 18,550 9,475 9,075 2,300 3,638 — Finance leases, maturing 2024-2051 (b) 639 277 571 552 19 — 9 — Tax-exempt bonds, maturing 2027-2046 (c) 3.89 % 1,331 — 500 500 — 77 352 — Notes payable and commercial paper (d) 5.58 % 4,925 — — — — — — — Money pool/intercompany borrowings — 968 1,193 1,041 152 638 407 538 Fair value hedge carrying value adjustment 32 — — — — — — — Unamortized debt discount and premium, net (e) 916 (29) (46) (24) (20) (24) (16) (8) Unamortized debt issuance costs (f) (383) (82) (145) (60) (81) (15) (25) (19) Total debt 4.35 % $ 79,540 $ 16,680 $ 24,802 $ 12,605 $ 10,553 $ 4,131 $ 4,758 $ 4,206 Short-term notes payable and commercial paper (4,288) — — — — — — — Short-term money pool/intercompany borrowings — (668) (1,043) (891) (152) (613) (256) (538) Current maturities of long-term debt (g) (2,800) (19) (661) (72) (589) — (4) (40) Total long-term debt (g) $ 72,452 $ 15,993 $ 23,098 $ 11,642 $ 9,812 $ 3,518 $ 4,498 $ 3,628 (a) Substantially all electric utility property is mortgaged under mortgage bond indentures. (b) Duke Energy includes $63 million of finance lease purchase accounting adjustments related to Duke Energy Florida related to PPAs that are not accounted for as finance leases in their respective financial statements because of grandfathering provisions in GAAP. (c) Substantially all tax-exempt bonds are secured by first mortgage bonds, letters of credit or the Master Credit Facility. (d) Includes $625 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy's commercial paper programs was 23 days. (e) Duke Energy includes $992 million and $69 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively. (f) Duke Energy includes $25 million in purchase accounting adjustments primarily related to the merger with Progress Energy. (g) Refer to Note 18 for additional information on amounts from consolidated VIEs. The following table shows the significant components of Current maturities of Long-Term Debt on the Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings. (in millions) Maturity Date Interest Rate December 31, 2024 Unsecured Debt Duke Energy (Parent) April 2025 3.364 % $ 420 Duke Energy (Parent) April 2025 3.950 % 250 Duke Energy Ohio June 2025 6.900 % 150 Duke Energy (Parent) September 2025 0.900 % 650 Piedmont September 2025 3.600 % 150 Duke Energy Florida (a) October 2025 5.303 % 100 Duke Energy Ohio (b) October 2025 3.230 % 95 Duke Energy (Parent) December 2025 5.000 % 500 Secured Debt Duke Energy Carolinas (a) January 2025 5.378 % 305 Duke Energy Carolinas (a) January 2025 5.423 % 195 Duke Energy Progress (a) April 2025 5.456 % 240 Duke Energy Progress (a) April 2025 5.467 % 160 First Mortgage Bonds Duke Energy Florida (a)(c) October 2073 4.910 % 200 Duke Energy Florida (a)(c) April 2074 4.910 % 173 Duke Energy Progress August 2025 3.250 % 500 Other (d) 261 Current maturities of long-term debt $ 4,349 (a) Debt has a floating interest rate . The $500 million in Duke Energy Carolinas borrowings due January 2025 were repaid in conjunction with the termination of the DERF accounts receivable securitization facility in January 2025. (b) Current maturity relates to Duke Energy Kentucky. (c) These first mortgage bonds are classified as Current maturities of long-term debt on the Consolidated Balance Sheets based on terms of the indentures, which could require repayment in less than 12 months if exercised by the bondholders. (d) Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities. Balance at December 31, 2024 and 2023 Duke Duke Duke Duke Duke Energy Energy Energy Energy (in millions) Energy Carolinas Progress Ohio Indiana Tax-exempt bonds $ 312 $ — $ — $ 27 $ 285 Commercial paper (a) 625 300 150 25 150 Total $ 937 $ 300 $ 150 $ 52 $ 435 (a) Progress Energy amounts are equal to Duke Energy Progress amounts.
Schedule of Maturities of Long-term Debt	The following table shows the annual maturities of long-term debt for the next five years and thereafter. Amounts presented exclude short-term notes payable, commercial paper and money pool borrowings and debt issuance costs for the Subsidiary Registrants. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy (a) Carolinas Energy Progress Florida Ohio Indiana Piedmont 2025 $ 4,349 $ 521 $ 1,525 $ 984 $ 541 $ 245 $ 4 $ 205 2026 4,925 1,078 539 470 69 45 4 40 2027 3,082 26 807 89 718 77 27 300 2028 3,937 976 1,411 593 819 40 7 — 2029 4,971 778 1,618 847 771 530 155 660 Thereafter 58,976 14,214 18,786 9,610 7,525 3,270 4,643 2,825 Total long-term debt, including current maturities $ 80,240 $ 17,593 $ 24,686 $ 12,593 $ 10,443 $ 4,207 $ 4,840 $ 4,030 (a) Excludes $1,004 million in purchase accounting adjustments related to the Progress Energy merger and the Piedmont acquisition.
Schedule of Long-term Debt Instruments	The following tables summarize significant debt issuances (in millions). Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Maturity Interest Duke Energy Energy Energy Energy Energy Energy Issuance Date Date Rate Energy (Parent) Carolinas Progress Florida Ohio Indiana Piedmont Unsecured Debt January 2024 (a) January 2027 4.850 % $ 600 $ 600 $ — $ — $ — $ — $ — $ — January 2024 (a) January 2029 4.850 % 650 650 — — — — — — April 2024 (e) April 2031 5.648 % 815 815 — — — — — — June 2024 (d) June 2034 5.450 % 750 750 — — — — — — June 2024 (d) June 2054 5.800 % 750 750 — — — — — — June 2024 (h) July 2031 5.900 % 80 — — — — 80 — — June 2024 (h) July 2034 6.000 % 95 — — — — 95 — — June 2024 (h) July 2039 6.170 % 50 — — — — 50 — — August 2024 (d) February 2035 5.100 % 375 — — — — — — 375 August 2024 (i) September 2054 6.450 % 1,000 1,000 — — — — — — Secured Debt April 2024 (f) March 2044 5.404 % 177 — — 177 — — — — First Mortgage Bonds January 2024 (b) January 2034 4.850 % $ 575 $ — $ 575 $ — — $ — $ — $ — January 2024 (b) January 2054 5.400 % 425 — 425 — — — — — March 2024 (b) March 2034 5.250 % 300 — — — — — 300 — March 2024 (c) March 2034 5.100 % 500 — — 500 — — — — March 2024 (d) March 2054 5.550 % 425 — — — — 425 — — April 2024 (g) April 2074 4.910 % 173 — — — 173 — — — Total issuances $ 7,740 $ 4,565 $ 1,000 $ 677 $ 173 $ 650 $ 300 $ 375 (a) Proceeds were used to repay the remaining $1 billion outstanding on Duke Energy (Parent)'s variable rate Term Loan Facility due March 2024, pay down a portion of short-term debt and for general corporate purposes. Duke Energy (Parent)'s Term Loan Facility was terminated in March 2024 in conjunction with the payoff of remaining borrowings. (b) Proceeds were used to pay down a portion of short-term debt and for general company purposes. (c) Proceeds were used to fund eligible green energy projects, pay down a portion of short-term debt and for general company purposes. (d) Proceeds were used to pay down a portion of short-term debt and for general corporate purposes. (e) In April 2024, Duke Energy issued 750 million euros aggregate principal amount of 3.75% senior notes due April 2031. Duke Energy's obligations under its euro-denominated fixed-rate notes were effectively converted to fixed-rate U.S. dollars at issuance through cross-currency swaps, mitigating foreign currency exchange risk associated with the interest and principal payments. The $815 million equivalent in U.S. dollars were used to repay a portion of a $1 billion debt maturity due April 2024, pay down short-term debt and for general corporate purposes. See Note 15 for additional information. (f) Proceeds were used to finance the South Carolina portion of restoration expenditures related to the following storms: Pax, Ulysses, Matthew, Florence, Michael, Dorian, Izzy and Jasper. See Notes 4 and 18 for more information. (g) Debt has a floating interest rate. Proceeds were used to pay down a portion of the DEFR accounts receivable securitization facility due in April 2024, and for general company purposes. See Note 18 for more information. (h) Debt issued by Duke Energy Kentucky with proceeds used to pay down a portion of short-term debt and for general corporate purposes. (i) Duke Energy issued $1 billion of fixed-to-fixed reset rate junior subordinated debentures (the debentures) with proceeds used to redeem Duke Energy’s outstanding Series B Preferred Stock and for general corporate purposes. The debentures will bear interest at 6.45% until September 1, 2034, and thereafter the interest rate will reset every five years to the five-year U.S. Treasury rate plus a spread of 2.588%. The debentures have early redemption options and are callable on or after June 2034 for 100% of the principal plus accrued interest. See Note 20 for additional information . Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Maturity Interest Duke Energy Energy Energy Energy Energy Energy Issuance Date Date Rate Energy (Parent) Carolinas Progress Florida Ohio Indiana Piedmont Unsecured Debt April 2023 (a) April 2026 4.125 % $ 1,725 $ 1,725 $ — $ — $ — $ — $ — $ — June 2023 (b) June 2033 5.400 % 350 — — — — — — 350 September 2023 (c) September 2033 5.750 % 600 600 — — — — — — September 2023 (c) September 2053 6.100 % 750 750 — — — — — — First Mortgage Bonds January 2023 (d) January 2033 4.950 % 900 — 900 — — — — — January 2023 (d) January 2053 5.350 % 900 — 900 — — — — — March 2023 (e) March 2033 5.250 % 500 — — 500 — — — — March 2023 (e) March 2053 5.350 % 500 — — 500 — — — — March 2023 (f) April 2033 5.250 % 375 — — — — 375 — — March 2023 (f) April 2053 5.650 % 375 — — — — 375 — — March 2023 (g) April 2053 5.400 % 500 — — — — — 500 — June 2023 (h) January 2033 4.950 % 350 — 350 — — — — — June 2023 (h) January 2054 5.400 % 500 — 500 — — — — — September 2023 (h) October 2073 4.910 % 200 — — — 200 — — — November 2023 (i) November 2033 5.875 % 600 — — — 600 — — — November 2023 (i) November 2053 6.200 % 700 — — — 700 — — — Total issuances $ 9,825 $ 3,075 $ 2,650 $ 1,000 $ 1,500 $ 750 $ 500 $ 350 (a) See "Duke Energy (Parent) Convertible Senior Notes" below for additional information. (b) Debt issued to repay $45 million of maturities due October 2023, to pay down a portion of short-term debt and for general corporate purposes. (c) Debt issued to repay $400 million of maturities due October 2023, to pay down a portion of short-term debt and for general corporate purposes. (d) Debt issued to repay $1 billion of maturities due March 2023, to pay down a portion of short-term debt and for general company purposes. (e) Debt issued to repay $300 million of maturities due September 2023, to pay down a portion of short-term debt and for general company purposes. (f) Debt issued to repay $300 million of maturities due September 2023, to pay down a portion of the $100 million Duke Energy Ohio Term Loan due October 2023, to repay a portion of short-term debt and for general corporate purposes. (g) Debt issued to repay the $300 million Duke Energy Indiana Term Loan due October 2023, to pay down a portion of short-term debt and for general company purposes. (h) Debt has a floating interest rate and was issued to pay down a portion of short-term debt and for general company purposes. (i) Debt issued to repay the $800 million Duke Energy Florida Term Loan due April 2024, to pay down a portion of short-term debt and for general company purposes.
Schedule of Line of Credit Facilities	The table below includes borrowing sublimits and available capacity under these credit facilities. December 31, 2024 Duke Duke Duke Duke Duke Duke Duke Energy Energy Energy Energy Energy Energy (in millions) Energy (Parent) Carolinas Progress Florida Ohio Indiana Piedmont Facility size (a) $ 9,000 $ 2,275 $ 1,400 $ 1,500 $ 875 $ 1,050 $ 950 $ 950 Reduction to backstop issuances Commercial paper (b) (3,143) (608) (300) (736) (448) (182) (160) (709) Outstanding letters of credit (18) (6) (4) (1) (7) — — — Tax-exempt bonds (81) — — — — — (81) — Available capacity $ 5,758 $ 1,661 $ 1,096 $ 763 $ 420 $ 868 $ 709 $ 241 (a) Represents the sublimit of each borrower. (b) Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies in the Consolidated Balance Sheets.

Joint Ownership of Generating_2

Joint Ownership of Generating and Transmission Facilities (Tables)	12 Months Ended
	Dec. 31, 2024
Joint Ownership Of Generating And Transmission Facilities [Abstract]
Schedule Joint Ownership of Generating and Transmission Facilities	The following table presents the Duke Energy Registrants' interest of jointly owned plant or facilities and amounts included on the Consolidated Balance Sheets. All facilities are operated by the Duke Energy Registrants and are included in the EU&I segment. December 31, 2024 Construction Ownership Property, Plant Accumulated Work in (in millions except for ownership interest) Interest and Equipment Depreciation Progress Duke Energy Carolinas Catawba (units 1 and 2) (a) 19.25 % $ 1,047 $ 594 $ 30 W.S. Lee CC (b) 87.27 % 654 118 6 Duke Energy Indiana Gibson (unit 5) (c) 50.05 % 400 266 5 Vermillion (d) 62.50 % 184 124 — Transmission and local facilities (c) Various 7,771 1,654 222 (a) Jointly owned with North Carolina Municipal Power Agency Number 1, NCEMC and PMPA. (b) Jointly owned with NCEMC. (c) Jointly owned with WVPA and IMPA. (d) Jointly owned with WVPA.

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	12 Months Ended
	Dec. 31, 2024
Asset Retirement Obligation Disclosure [Abstract]
Schedule of Asset Retirement Obligations by Category	The following table presents the AROs recorded on the Consolidated Balance Sheets. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Decommissioning of nuclear power facilities $ 4,493 $ 2,050 $ 2,425 $ 2,318 $ 107 $ — $ — $ — Closure of ash impoundments 5,173 1,867 1,993 1,975 18 72 1,241 — Other 326 73 130 41 89 67 27 29 Total asset retirement obligation $ 9,992 $ 3,990 $ 4,548 $ 4,334 $ 214 $ 139 $ 1,268 $ 29 Less: Current portion 650 247 231 230 1 8 164 — Total noncurrent asset retirement obligation $ 9,342 $ 3,743 $ 4,317 $ 4,104 $ 213 $ 131 $ 1,104 $ 29
Public Utilities General Disclosures	The following table summarizes information about the most recent site-specific nuclear decommissioning cost studies. Decommissioning costs are stated in 2023 or 2024 dollars, depending on the year of the cost study, and include costs to decommission plant components not subject to radioactive contamination. Decommissioning (in millions) Costs Year of Cost Study Duke Energy $ 9,031 2023 or 2024 Duke Energy Carolinas (a) 4,439 2023 Progress Energy 4,592 2024 Duke Energy Progress (b) 4,477 2024 Duke Energy Florida (c) 115 N/A (a) Decommissioning costs for Duke Energy Carolinas reflect its ownership interest in jointly owned reactors. Other joint owners are responsible for decommissioning costs related to their interest in the reactors. Duke Energy Carolinas' site-specific nuclear decommissioning cost study and a funding study were filed with the NCUC and PSCSC in 2024. (b) Duke Energy Progress' site-specific nuclear decommissioning cost study was filed with the NCUC and PSCSC in February 2025. An updated funding study will be completed and filed with the NCUC and PSCSC in 2025. (c) During 2019, Duke Energy Florida reached an agreement to transfer decommissioning work for Crystal River Unit 3 to a third party and decommissioning costs are based on the agreement with this third party rather than a cost study. Regulatory approval was received from the NRC and the FPSC in April 2020 and August 2020, respectively. Duke Energy Florida provides the FPSC periodic reports on the status and progress of decommissioning activities. The following table presents the fair value of NDTF assets legally restricted for purposes of settling AROs associated with nuclear decommissioning. Duke Energy Florida entered into an agreement with a third party to decommission Crystal River Unit 3 and was granted an exemption from the NRC, which allows for use of the NDTF for all aspects of nuclear decommissioning. The entire balance of Duke Energy Florida's NDTF may be applied toward license termination, spent fuel and site restoration costs incurred to decommission Crystal River Unit 3 and is excluded from the table below. See Note 17 for additional information related to the fair value of the Duke Energy Registrants' NDTFs. December 31, (in millions) 2024 2023 Duke Energy $ 10,044 $ 8,851 Duke Energy Carolinas 5,687 5,002 Progress Energy 4,357 3,849 Duke Energy Progress 4,357 3,849 Unit Year of Expiration Duke Energy Carolinas Catawba Units 1 and 2 2043 McGuire Unit 1 2041 McGuire Unit 2 2043 Oconee Units 1 and 2 2033 Oconee Unit 3 2034 Duke Energy Progress Brunswick Unit 1 2036 Brunswick Unit 2 2034 Harris 2046 Robinson 2030
Rollforward Schedule of Asset Retirement Obligations	The following tables present changes in the liability associated with AROs. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Balance at December 31, 2022 $ 12,728 $ 5,382 $ 6,181 $ 5,823 $ 358 $ 154 $ 951 $ 26 Accretion expense (a) 523 254 237 225 12 7 33 1 Liabilities settled (b) (758) (256) (379) (292) (87) (15) (108) — Liabilities incurred in the current year 29 3 21 6 15 1 4 — Revisions in estimates of cash flows (c) (3,366) (1,370) (1,915) (1,892) (23) (11) (71) (1) Balance at December 31, 2023 9,156 4,013 4,145 3,870 275 136 809 26 Accretion expense (a) 434 183 199 190 9 7 49 2 Liabilities settled (b) (634) (212) (321) (232) (89) (7) (94) — Liabilities incurred in the current year 20 8 12 — 12 — — — Revisions in estimates of cash flows (c) 1,016 (2) 513 506 7 3 504 1 Balance at December 31, 2024 $ 9,992 $ 3,990 $ 4,548 $ 4,334 $ 214 $ 139 $ 1,268 $ 29 (a) Substantially all accretion expense has been deferred in accordance with regulatory accounting treatment. (b) Amounts primarily relate to ash impoundment closures and nuclear decommissioning. (c) The amounts recorded represent the discounted cash flows for estimated closure costs as evaluated on a site-by-site basis. The decreases in 2023 primarily relate to lower discounted cash flows for decommissioning the nuclear power facilities due to changes in estimates and economic assumptions including discount rates, cost escalation rates and cash flow timing, as well as lower unit costs associated with ash basin closure, routine maintenance and beneficiation activities, as well as reduction in monitoring wells needed. The increases in 2024 primarily relate to additional scope requirements to regulate the disposal of CCR in landfills and surface impoundments as a result of the 2024 CCR Rule, including an increase in groundwater monitoring wells.

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	The composite weighted average depreciation rates, excluding nuclear fuel, are included in the table that follows. Years Ended December 31, 2024 2023 2022 Duke Energy 3.0 % 2.9 % 3.0 % Duke Energy Carolinas 3.1 % 2.7 % 2.7 % Progress Energy 3.3 % 3.3 % 3.2 % Duke Energy Progress 3.2 % 3.1 % 3.0 % Duke Energy Florida 3.5 % 3.5 % 3.5 % Duke Energy Ohio 2.9 % 2.8 % 2.9 % Duke Energy Indiana 3.6 % 3.6 % 3.6 % Piedmont 2.2 % 2.1 % 2.1 % The following tables summarize the property, plant and equipment for Duke Energy and its subsidiary registrants. December 31, 2024 Average Remaining Duke Duke Duke Duke Duke Useful Life Duke Energy Progress Energy Energy Energy Energy (in millions) (Years) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Land $ 2,569 $ 617 $ 1,134 $ 535 $ 599 $ 258 $ 144 $ 391 Plant – Regulated Electric generation, distribution and transmission 37 137,836 49,547 62,351 35,633 26,718 7,634 18,304 — Natural gas transmission and distribution 58 15,333 — — — — 4,255 — 11,078 Other buildings and improvements 41 2,982 1,256 698 391 307 418 372 238 Nuclear fuel 3,518 2,003 1,515 1,515 — — — — Equipment 13 3,863 997 1,252 753 499 542 490 170 Construction in process 7,850 2,735 3,657 1,884 1,773 385 406 405 Other 10 6,855 1,227 1,953 1,349 594 426 254 498 Total property, plant and equipment (a) 180,806 58,382 72,560 42,060 30,490 13,918 19,970 12,780 Total accumulated depreciation – regulated (b)(c) (55,535) (19,090) (23,586) (15,930) (7,650) (3,674) (6,848) (2,432) Total accumulated depreciation – other (d) (1,968) — — — — — — — Total net property, plant and equipment $ 123,303 $ 39,292 $ 48,974 $ 26,130 $ 22,840 $ 10,244 $ 13,122 $ 10,348 (a) Includes finance leases of $670 million, $336 million, $620 million, $512 million, $108 million and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy and Duke Energy Progress amounts are net of $159 million of accumulated amortization of finance leases. (b) Includes $1,824 million, $1,010 million, $814 million and $814 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. (c) Includes accumulated amortization of finance leases of $84 million and $4 million at Duke Energy Carolinas and Duke Energy Indiana, respectively. (d) Includes accumulated amortization of finance leases of $25 million at Duke Energy. December 31, 2023 Average Remaining Duke Duke Duke Duke Duke Useful Life Duke Energy Progress Energy Energy Energy Energy (in millions) (Years) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Land $ 2,345 $ 581 $ 1,012 $ 502 $ 510 $ 242 $ 133 $ 352 Plant – Regulated Electric generation, distribution and transmission 40 129,985 48,107 57,436 33,171 24,265 7,243 17,199 — Natural gas transmission and distribution 57 14,130 — — — — 3,993 — 10,137 Other buildings and improvements 42 2,887 1,213 677 377 300 421 355 221 Nuclear fuel 3,303 1,866 1,437 1,437 — — — — Equipment 14 3,409 870 1,104 654 450 474 442 143 Construction in process 8,372 2,578 3,941 1,661 2,280 427 427 690 Other 12 6,922 1,455 2,037 1,481 548 410 344 365 Total property, plant and equipment (a) 171,353 56,670 67,644 39,283 28,353 13,210 18,900 11,908 Total accumulated depreciation – regulated (b)(c) (54,323) (19,896) (22,300) (15,227) (7,067) (3,451) (6,501) (2,259) Total accumulated depreciation – other (d) (1,715) — — — — — — — Total net property, plant and equipment $ 115,315 $ 36,774 $ 45,344 $ 24,056 $ 21,286 $ 9,759 $ 12,399 $ 9,649 (a) Includes finance leases of $697 million, $335 million, $615 million, $552 million, $63 million, and $10 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively, primarily within Plant – Regulated. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $292 million, $119 million and $173 million, respectively, of accumulated amortization of finance leases. (b) Includes $1,793 million, $991 million, $802 million and $802 million of accumulated amortization of nuclear fuel at Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. (c) Includes accumulated amortization of finance leases of $3 million, $67 million, and $4 million at Duke Energy, Duke Energy Carolinas and Duke Energy Indiana, respectively. (d) Includes accumulated amortization of finance leases of $7 million at Duke Energy.
Schedule of Capitalized Interest	The following table presents capitalized interest, which includes the debt component of AFUDC. Years Ended December 31, (in millions) 2024 2023 2022 Duke Energy $ 201 $ 201 $ 118 Duke Energy Carolinas 61 62 50 Progress Energy 57 41 26 Duke Energy Progress 52 35 19 Duke Energy Florida 5 6 7 Duke Energy Ohio 14 16 14 Duke Energy Indiana 13 21 3 Piedmont 8 8 4

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets	The following tables show the carrying amount and accumulated amortization of intangible assets included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets of the Duke Energy Registrants at December 31, 2024, and 2023. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Emission allowances $ 8 $ — $ 5 $ 2 $ 3 $ — $ 2 $ — Renewable energy certificates 241 103 136 136 — 2 — — Other 47 — 5 1 4 — — 22 Total gross carrying amounts 296 103 146 139 7 2 2 22 Accumulated amortization – other (19) — (3) — (3) — — (9) Total intangible assets, net $ 277 $ 103 $ 143 $ 139 $ 4 $ 2 $ 2 $ 13 December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Emission allowances $ 8 $ — $ 5 $ 2 $ 3 $ — $ 2 $ — Renewable energy certificates 232 97 133 133 — 2 — — Other 56 — 5 1 3 — — 22 Total gross carrying amounts 296 97 143 136 6 2 2 22 Accumulated amortization – other (14) — (3) — (3) — — (6) Total intangible assets, net $ 282 $ 97 $ 140 $ 136 $ 3 $ 2 $ 2 $ 16

Investments in Unconsolidated_2

Investments in Unconsolidated Affiliates (Tables)	12 Months Ended
	Dec. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]
Investments in Equity Method Unconsolidated Affiliates	The following table presents Duke Energy’s investments in unconsolidated affiliates accounted for under the equity method, as well as the respective equity in earnings (losses), by segment, for periods presented in this filing. Years Ended December 31, 2024 2023 2022 Equity in Equity in Equity in (in millions) Investments (losses) earnings Investments earnings earnings Electric Utilities and Infrastructure $ 28 $ (11) $ 97 $ 7 $ 7 Gas Utilities and Infrastructure 186 (48) 259 40 21 Other 139 50 136 66 85 Total $ 353 $ (9) $ 492 $ 113 $ 113

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2024
Related Party Transactions [Abstract]
Related Party Transactions, Other Revenue and Expense	Transactions with related parties included in the Consolidated Statements of Operations and Comprehensive Income are presented in the following table. Years Ended December 31, (in millions) 2024 2023 2022 Duke Energy Carolinas Corporate governance and shared service expenses (a) $ 812 $ 823 $ 838 Indemnification coverages (b) 44 34 28 JDA revenue (c) 35 34 109 JDA expense (c) 187 177 600 Intercompany natural gas purchases (d) 12 11 12 Progress Energy Corporate governance and shared service expenses (a) $ 709 $ 736 $ 818 Indemnification coverages (b) 57 47 43 JDA revenue (c) 187 177 600 JDA expense (c) 35 34 109 Intercompany natural gas purchases (d) 75 75 76 Duke Energy Progress Corporate governance and shared service expenses (a) $ 426 $ 434 $ 469 Indemnification coverages (b) 23 20 20 JDA revenue (c) 187 177 600 JDA expense (c) 35 34 109 Intercompany natural gas purchases (d) 75 75 76 Duke Energy Florida Corporate governance and shared service expenses (a) $ 283 $ 302 $ 349 Indemnification coverages (b) 34 27 23 Duke Energy Ohio Corporate governance and shared service expenses (a) $ 304 $ 294 $ 334 Indemnification coverages (b) 6 5 5 Duke Energy Indiana Corporate governance and shared service expenses (a) $ 355 $ 365 $ 447 Indemnification coverages (b) 10 8 8 Piedmont Corporate governance and shared service expenses (a) $ 166 $ 149 $ 155 Indemnification coverages (b) 4 4 3 Intercompany natural gas sales (d) 87 86 88 Natural gas storage and transportation costs (e) 23 24 23 (a) The Subsidiary Registrants are charged their proportionate share of corporate governance and other shared services costs, primarily related to human resources, employee benefits, information technology, legal and accounting fees, as well as other third-party costs. These amounts are primarily recorded in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income. (b) The Subsidiary Registrants incur expenses related to certain indemnification coverages through Bison, Duke Energy’s wholly owned captive insurance subsidiary. These expenses are recorded in Operation, maintenance and other on the Consolidated Statements of Operations and Comprehensive Income. (c) Duke Energy Carolinas and Duke Energy Progress participate in a JDA, which allows the collective dispatch of power plants between the service territories to reduce customer rates. Revenues from the sale of power and expenses from the purchase of power pursuant to the JDA are recorded in Operating Revenues and Fuel used in electric generation and purchased power, respectively, on the Consolidated Statements of Operations and Comprehensive Income. (d) Piedmont provides long-term natural gas delivery service to certain Duke Energy Carolinas and Duke Energy Progress natural gas-fired generation facilities. Piedmont records the sales in Operating Revenues, and Duke Energy Carolinas and Duke Energy Progress record the related purchases as a component of Fuel used in electric generation and purchased power on their respective Consolidated Statements of Operations and Comprehensive Income. These intercompany revenues and expenses are eliminated in consolidation. (e) Piedmont has related party transactions as a customer of its equity method investments in Pine Needle, Hardy Storage and Cardinal natural gas storage and transportation facilities. These expenses are included in Cost of natural gas on Piedmont's Consolidated Statements of Operations and Comprehensive Income. Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Carolinas Energy Progress Florida Ohio Indiana Piedmont December 31, 2024 Intercompany income tax receivable $ — $ — $ — $ 154 $ — $ — $ — Intercompany income tax payable 419 169 315 — 43 110 43 December 31, 2023 Intercompany income tax receivable $ — $ — $ — $ — $ 91 $ 53 $ — Intercompany income tax payable 81 92 94 114 — — 57

Derivatives and Hedging (Tables

Derivatives and Hedging (Tables)	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amounts of Outstanding Derivative Positions	The following tables show notional amounts of outstanding derivatives related to interest rate risk. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Indiana Ohio Cash flow hedges $ 2,825 $ — $ — $ — $ — $ — $ — Undesignated contracts 3,202 1,150 1,775 1,125 650 250 27 Total notional amount $ 6,027 $ 1,150 $ 1,775 $ 1,125 $ 650 $ 250 $ 27 December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Indiana Ohio Cash flow hedges $ 2,300 $ — $ — $ — $ — $ — $ — Undesignated contracts 2,727 1,050 1,250 925 325 400 27 Total notional amount $ 5,027 $ 1,050 $ 1,250 $ 925 $ 325 $ 400 $ 27 The tables below include volumes of outstanding commodity derivatives. Amounts disclosed represent the absolute value of notional volumes of commodity contracts excluding NPNS. The Duke Energy Registrants have netted contractual amounts where offsetting purchase and sale contracts exist with identical delivery locations and times of delivery. Where all commodity positions are perfectly offset, no quantities are shown. December 31, 2024 Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy Carolinas Energy Progress Ohio Indiana Piedmont Electricity (GWh) 12,229 — — — 1,287 10,942 — Natural gas (millions of Dth) 779 276 246 246 — 32 225 December 31, 2023 Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy Carolinas Energy Progress Ohio Indiana Piedmont Electricity (GWh) 13,608 — — — 1,616 11,992 — Natural gas (millions of Dth) 846 279 274 274 — 30 263 The following table shows Duke Energy's outstanding derivatives related to foreign currency risk. Fair Value Gain (Loss) (a) Receive Hedge (in millions) Pay Notional Notional Receive Maturity Years Ended December 31, (in millions) Pay Rate (in millions) Rate Date 2024 2023 2022 Fair value hedges $ 645 4.75 % 600 euros 3.10 % June 2028 $ (41) $ 17 $ (3) 537 5.31 % 500 euros 3.85 % June 2034 (34) 15 (2) 815 5.65 % 750 euros 3.75 % April 2031 (38) — — Total notional amount $ 1,997 1,850 euros $ (113) $ 32 $ (5) (a) Amounts are recorded in Other Income and expenses, net on the Consolidated Statement of Operations, which offsets an equal translation adjustment of the foreign denominated debt. See the Consolidated Statements of Comprehensive Income for amounts excluded from the assessment of effectiveness for which the difference between changes in fair value and periodic amortization is recorded.
Location and Fair Value of Derivatives Recognized in the Consolidated Balance Sheets	The following tables show the fair value and balance sheet location of derivative instruments. Although derivatives subject to master netting arrangements are netted on the Consolidated Balance Sheets, the fair values presented below are shown gross and cash collateral on the derivatives has not been netted against the fair values shown. Derivative Assets December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Commodity Contracts Not Designated as Hedging Instruments Current $ 49 $ 20 $ 17 $ 17 $ — $ 1 $ 8 $ 1 Noncurrent 60 29 32 32 — — — — Total Derivative Assets – Commodity Contracts $ 109 $ 49 $ 49 $ 49 $ — $ 1 $ 8 $ 1 Interest Rate Contracts Designated as Hedging Instruments Current $ 108 $ — $ — $ — $ — $ — $ — $ — Noncurrent 52 — — — — — — — Not Designated as Hedging Instruments Current $ 110 $ 19 $ 55 $ 44 $ 11 $ — $ 36 $ — Noncurrent 50 26 23 16 7 — — — Total Derivative Assets – Interest Rate Contracts $ 320 $ 45 $ 78 $ 60 $ 18 $ — $ 36 $ — Foreign Currency Contracts Designated as Hedging Instruments Noncurrent 5 — — — — — — — Total Derivative Assets – Foreign Currency Contracts $ 5 $ — $ — $ — $ — $ — $ — $ — Total Derivative Assets $ 434 $ 94 $ 127 $ 109 $ 18 $ 1 $ 44 $ 1 Derivative Liabilities December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Commodity Contracts Not Designated as Hedging Instruments Current $ 108 $ 57 $ 32 $ 32 $ — $ — $ 3 $ 16 Noncurrent 134 31 24 24 — — — 78 Total Derivative Liabilities – Commodity Contracts $ 242 $ 88 $ 56 $ 56 $ — $ — $ 3 $ 94 Interest Rate Contracts Not Designated as Hedging Instruments Current 2 — 2 1 1 — — — Noncurrent 1 — — — — 1 — — Total Derivative Liabilities – Interest Rate Contracts $ 3 $ — $ 2 $ 1 $ 1 $ 1 $ — $ — Foreign Currency Contracts Designated as Hedging Instruments Current $ 35 $ — $ — $ — $ — $ — $ — $ — Noncurrent 39 — — — — — — — Total Derivative Liabilities – Foreign Currency Contracts $ 74 $ — $ — $ — $ — $ — $ — $ — Total Derivative Liabilities $ 319 $ 88 $ 58 $ 57 $ 1 $ 1 $ 3 $ 94 Derivative Assets December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Commodity Contracts Not Designated as Hedging Instruments Current $ 25 $ 1 $ 3 $ 1 $ 2 $ 1 $ 18 $ 1 Noncurrent 57 26 31 31 — — — — Total Derivative Assets – Commodity Contracts $ 82 $ 27 $ 34 $ 32 $ 2 $ 1 $ 18 $ 1 Interest Rate Contracts Designated as Hedging Instruments Current $ 31 $ — $ — $ — $ — $ — $ — $ — Noncurrent 17 — — — — — — — Not Designated as Hedging Instruments Current $ 5 $ 5 $ — $ — $ — $ — $ — $ — Noncurrent 10 3 — — — — 7 — Total Derivative Assets – Interest Rate Contracts $ 63 $ 8 $ — $ — $ — $ — $ 7 $ — Foreign Currency Contracts Designated as Hedging Instruments Noncurrent $ 44 $ — $ — $ — $ — $ — $ — $ — Total Derivative Assets – Foreign Currency Contracts $ 44 $ — $ — $ — $ — $ — $ — $ — Total Derivative Assets $ 189 $ 35 $ 34 $ 32 $ 2 $ 1 $ 25 $ 1 Derivative Liabilities December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Not Designated as Hedging Instruments Current $ 354 $ 177 $ 138 $ 138 $ — $ — $ 18 $ 20 Noncurrent 255 67 61 61 — — — 127 Total Derivative Liabilities – Commodity Contracts $ 609 $ 244 $ 199 $ 199 $ — $ — $ 18 $ 147 Interest Rate Contracts Designated as Hedging Instruments Current $ 25 $ — $ — $ — $ — $ — $ — $ — Noncurrent 26 — — — — — — — Not Designated as Hedging Instruments Current 13 2 11 11 — — — — Noncurrent 39 14 24 9 15 1 — — Total Derivative Liabilities – Interest Rate Contracts $ 103 $ 16 $ 35 $ 20 $ 15 $ 1 $ — $ — Foreign Currency Contracts Designated as Hedging Instruments Current $ 17 $ — $ — $ — $ — $ — $ — $ — Total Derivative Liabilities – Foreign Currency Contracts $ 17 $ — $ — $ — $ — $ — $ — $ — Total Derivative Liabilities $ 729 $ 260 $ 234 $ 219 $ 15 $ 1 $ 18 $ 147
Offsetting Assets	The following tables present the line items on the Consolidated Balance Sheets where derivatives are reported. Substantially all of Duke Energy's outstanding derivative contracts are subject to enforceable master netting arrangements. The amounts shown are calculated by counterparty. Accounts receivable or accounts payable may also be available to offset exposures in the event of bankruptcy. These amounts are not included in the tables below. Derivative Assets December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current Gross amounts recognized $ 267 $ 39 $ 72 $ 61 $ 11 $ 1 $ 44 $ 1 Offset (29) (15) (14) (14) — — — — Net amounts presented in Current Assets: Other $ 238 $ 24 $ 58 $ 47 $ 11 $ 1 $ 44 $ 1 Noncurrent Gross amounts recognized $ 167 $ 55 $ 55 $ 48 $ 7 $ — $ — $ — Offset (37) (19) (17) (17) — — — — Net amounts presented in Other Noncurrent Assets: Other $ 130 $ 36 $ 38 $ 31 $ 7 $ — $ — $ — Derivative Assets December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current Gross amounts recognized $ 61 $ 6 $ 3 $ 1 $ 2 $ 1 $ 18 $ 1 Offset (2) (1) (1) (1) — — — — Net amounts presented in Current Assets: Other $ 59 $ 5 $ 2 $ — $ 2 $ 1 $ 18 $ 1 Noncurrent Gross amounts recognized $ 128 $ 29 $ 31 $ 31 $ — $ — $ 7 $ — Offset (37) (14) (22) (22) — — — — Net amounts presented in Other Noncurrent Assets: Other $ 91 $ 15 $ 9 $ 9 $ — $ — $ 7 $ —
Offsetting Liabilities	Derivative Liabilities December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current Gross amounts recognized $ 145 $ 57 $ 34 $ 33 $ 1 $ — $ 3 $ 16 Offset (29) (15) (14) (14) — — — — Cash collateral posted (3) (2) — — — — (1) — Net amounts presented in Current Liabilities: Other $ 113 $ 40 $ 20 $ 19 $ 1 $ — $ 2 $ 16 Noncurrent Gross amounts recognized $ 174 $ 31 $ 24 $ 24 $ — $ 1 $ — $ 78 Offset (37) (19) (17) (17) — — — — Cash collateral posted (4) (4) — — — — — — Net amounts presented in Other Noncurrent Liabilities: Other $ 133 $ 8 $ 7 $ 7 $ — $ 1 $ — $ 78 Derivative Liabilities December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current Gross amounts recognized $ 409 $ 179 $ 149 $ 149 $ — $ — $ 18 $ 20 Offset (2) (1) (1) (1) — — — — Cash collateral posted (96) (48) (30) (30) — — (18) — Net amounts presented in Current Liabilities: Other $ 311 $ 130 $ 118 $ 118 $ — $ — $ — $ 20 Noncurrent Gross amounts recognized $ 320 $ 81 $ 85 $ 70 $ 15 $ 1 $ — $ 127 Offset (37) (14) (22) (22) — — — — Cash collateral posted (66) (38) (28) (28) — — — — Net amounts presented in Other Noncurrent Liabilities: Other $ 217 $ 29 $ 35 $ 20 $ 15 $ 1 $ — $ 127
Derivative Contracts with Contingent Credit Features	The following tables show information with respect to derivative contracts that are in a net liability position and contain objective credit risk-related payment provisions. December 31, 2024 Duke Duke Duke Energy Progress Energy (in millions) Energy Carolinas Energy Progress Aggregate fair value of derivatives in a net liability position $ 101 $ 52 $ 49 $ 49 Fair value of collateral already posted 6 6 — — Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered 95 46 49 49 December 31, 2023 Duke Duke Duke Energy Progress Energy (in millions) Energy Carolinas Energy Progress Aggregate fair value of derivatives in a net liability position $ 342 $ 175 $ 166 $ 166 Fair value of collateral already posted 144 86 58 58 Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered 198 89 108 108

Investments in Debt and Equit_2

Investments in Debt and Equity Securities (Tables)	12 Months Ended
	Dec. 31, 2024
Investment [Line Items]
Summary of Investments in Debt and Equity Securities	The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value NDTF Cash and cash equivalents $ — $ — $ 139 $ — $ — $ 133 Equity securities 5,753 61 8,233 4,942 22 7,278 Corporate debt securities 6 33 673 12 43 632 Municipal bonds 2 14 342 6 16 347 U.S. government bonds 3 84 1,806 24 65 1,575 Other debt securities 1 8 239 1 13 178 Total NDTF Investments $ 5,765 $ 200 $ 11,432 $ 4,985 $ 159 $ 10,143 Other Investments Cash and cash equivalents $ — $ — $ 47 $ — $ — $ 31 Equity securities 39 4 160 33 — 158 Corporate debt securities — 5 79 — 6 82 Municipal bonds — 1 83 1 2 77 U.S. government bonds — 5 59 — 2 65 Other debt securities — 4 45 — 2 47 Total Other Investments $ 39 $ 19 $ 473 $ 34 $ 12 $ 460 Total Investments $ 5,804 $ 219 $ 11,905 $ 5,019 $ 171 $ 10,603
Schedule of Realized Gain (Loss)	Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2024, 2023 and 2022, were as follows. Years Ended December 31, (in millions) 2024 2023 2022 FV-NI: Realized gains $ 600 $ 129 $ 201 Realized losses 85 146 316 AFS: Realized gains 28 44 28 Realized losses 67 140 151
Investments Classified by Contractual Maturity Date	The table below summarizes the maturity date for debt securities. December 31, 2024 Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Indiana Due in one year or less $ 89 $ 9 $ 62 $ 12 $ 50 $ 4 Due after one through five years 791 303 408 310 98 20 Due after five through 10 years 721 441 234 219 15 12 Due after 10 years 1,725 898 729 680 49 20 Total $ 3,326 $ 1,651 $ 1,433 $ 1,221 $ 212 $ 56
Duke Energy Carolinas
Investment [Line Items]
Summary of Investments in Debt and Equity Securities	The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value NDTF Cash and cash equivalents $ — $ — $ 62 $ — $ — $ 51 Equity securities 3,386 33 4,751 2,886 14 4,196 Corporate debt securities 2 27 401 4 35 390 Municipal bonds — 4 36 — 4 50 U.S. government bonds — 50 991 13 33 826 Other debt securities 1 8 223 1 13 172 Total NDTF Investments $ 3,389 $ 122 $ 6,464 $ 2,904 $ 99 $ 5,685
Schedule of Realized Gain (Loss)	Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2024, 2023 and 2022, were as follows. Years Ended December 31, (in millions) 2024 2023 2022 FV-NI: Realized gains $ 298 $ 82 $ 124 Realized losses 40 79 177 AFS: Realized gains 14 22 22 Realized losses 40 65 86
Progress Energy
Investment [Line Items]
Summary of Investments in Debt and Equity Securities	The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value NDTF Cash and cash equivalents $ — $ — $ 77 $ — $ — $ 82 Equity securities 2,367 28 3,482 2,056 8 3,082 Corporate debt securities 4 6 272 8 8 242 Municipal bonds 2 10 306 6 12 297 U.S. government bonds 3 34 815 11 32 749 Other debt securities — — 16 — — 6 Total NDTF Investments $ 2,376 $ 78 $ 4,968 $ 2,081 $ 60 $ 4,458 Other Investments Cash and cash equivalents $ — $ — $ 23 $ — $ — $ 18 Municipal bonds — — 24 — 1 23 Total Other Investments $ — $ — $ 47 $ — $ 1 $ 41 Total Investments $ 2,376 $ 78 $ 5,015 $ 2,081 $ 61 $ 4,499
Schedule of Realized Gain (Loss)	Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2024, 2023 and 2022, were as follows. Years Ended December 31, (in millions) 2024 2023 2022 FV-NI: Realized gains $ 302 $ 47 $ 77 Realized losses 45 67 139 AFS: Realized gains 14 22 6 Realized losses 27 75 48
Duke Energy Progress
Investment [Line Items]
Summary of Investments in Debt and Equity Securities	The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value NDTF Cash and cash equivalents $ — $ — $ 54 $ — $ — $ 55 Equity securities 2,256 28 3,362 1,956 8 2,970 Corporate debt securities 4 6 256 7 8 229 Municipal bonds 2 10 306 6 12 297 U.S. government bonds 3 26 645 10 18 518 Other debt securities — — 14 — — 6 Total NDTF Investments $ 2,265 $ 70 $ 4,637 $ 1,979 $ 46 $ 4,075 Other Investments Cash and cash equivalents $ — $ — $ 16 $ — $ — $ 14 Total Other Investments $ — $ — $ 16 $ — $ — $ 14 Total Investments $ 2,265 $ 70 $ 4,653 $ 1,979 $ 46 $ 4,089
Schedule of Realized Gain (Loss)	Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the years ended December 31, 2024, 2023 and 2022, were as follows. Years Ended December 31, (in millions) 2024 2023 2022 FV-NI: Realized gains $ 288 $ 44 $ 76 Realized losses 44 66 136 AFS: Realized gains 13 20 6 Realized losses 26 70 44
Duke Energy Florida
Investment [Line Items]
Summary of Investments in Debt and Equity Securities	The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value NDTF Cash and cash equivalents $ — $ — $ 23 $ — $ — $ 27 Equity securities 111 — 120 100 — 112 Corporate debt securities — — 16 1 — 13 U.S. government bonds — 8 170 1 14 231 Other debt securities — — 2 — — — Total NDTF Investments (a) $ 111 $ 8 $ 331 $ 102 $ 14 $ 383 Other Investments Cash and cash equivalents $ — $ — $ 3 $ — $ — $ 3 Municipal bonds — — 24 — 1 23 Total Other Investments $ — $ — $ 27 $ — $ 1 $ 26 Total Investments $ 111 $ 8 $ 358 $ 102 $ 15 $ 409 (a) During the years ended December 31, 2024, and 2023, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.
Duke Energy Indiana
Investment [Line Items]
Summary of Investments in Debt and Equity Securities	The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS. December 31, 2024 December 31, 2023 Gross Gross Gross Gross Unrealized Unrealized Unrealized Unrealized Holding Holding Estimated Holding Holding Estimated (in millions) Gains Losses Fair Value Gains Losses Fair Value Investments Cash and cash equivalents $ — $ — $ 1 $ — $ — $ 1 Equity securities — 4 89 4 — 98 Corporate debt securities — — 6 — — 8 Municipal bonds — 1 43 1 1 46 U.S. government bonds — — 7 — — 10 Total Investments $ — $ 5 $ 146 $ 5 $ 1 $ 163

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Amounts for Assets and Liabilities	The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. Derivative amounts in the tables below for all Duke Energy Registrants exclude cash collateral, which is disclosed in Note 15. See Note 16 for additional information related to investments by major security type for the Duke Energy Registrants. December 31, 2024 (in millions) Total Fair Value Level 1 Level 2 Level 3 Not Categorized NDTF cash and cash equivalents $ 139 $ 139 $ — $ — $ — NDTF equity securities 8,233 8,203 2 — 28 NDTF debt securities 3,060 1,022 2,038 — — Other equity securities 160 160 — — — Other debt securities 266 52 214 — — Other cash and cash equivalents 47 47 — — — Derivative assets 434 2 423 9 — Total assets 12,339 9,625 2,677 9 28 Derivative liabilities (319) (3) (316) — — Net assets $ 12,020 $ 9,622 $ 2,361 $ 9 $ 28 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Level 3 Not Categorized NDTF cash and cash equivalents $ 133 $ 133 $ — $ — $ — NDTF equity securities 7,278 7,241 — — 37 NDTF debt securities 2,732 829 1,903 — — Other equity securities 158 158 — — — Other debt securities 271 55 216 — — Other cash and cash equivalents 31 31 — — — Derivative assets 189 37 137 15 — Total assets 10,792 8,484 2,256 15 37 Derivative liabilities (729) (60) (669) — — Net assets $ 10,063 $ 8,424 $ 1,587 $ 15 $ 37
Reconciliation of Assets and Liabilities Measured at Fair Value an a Recurring Basis Using Unobservable Inputs	The following table provides reconciliations of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements. Derivatives (net) Years Ended December 31, (in millions) 2024 2023 Balance at beginning of period $ 15 $ 34 Purchases, sales, issuances and settlements: Purchases 29 47 Settlements (46) (72) Total gains included on the Consolidated Balance Sheet 11 6 Balance at end of period $ 9 $ 15
Quantitative Information Table - Level 3	The following tables include quantitative information about the Duke Energy Registrants' derivatives classified as Level 3. December 31, 2024 Weighted Fair Value Average Investment Type (in millions) Valuation Technique Unobservable Input Range Range Duke Energy Ohio FTRs $ 1 RTO auction pricing FTR price – per MWh $ — – $ 1.13 $ 0.48 Duke Energy Indiana FTRs 8 RTO auction pricing FTR price – per MWh (0.63) – 9.24 0.94 Duke Energy Total Level 3 derivatives $ 9 December 31, 2023 Weighted Fair Value Average Investment Type (in millions) Valuation Technique Unobservable Input Range Range Duke Energy Ohio FTRs $ 2 RTO auction pricing FTR price – per MWh $ 0.36 – $ 2.11 $ 0.71 Duke Energy Indiana FTRs 13 RTO auction pricing FTR price – per MWh (1.05) – 9.64 1.26 Duke Energy Total Level 3 derivatives $ 15
Schedule of Long-Term Debt Fair Value	The fair value and book value of long-term debt, including current maturities, is summarized in the following table. Estimates determined are not necessarily indicative of amounts that could have been settled in current markets. Fair value of long-term debt uses Level 2 measurements. December 31, 2024 December 31, 2023 (in millions) Book Value Fair Value Book Value Fair Value Duke Energy (a) $ 80,689 $ 73,440 $ 75,252 $ 69,790 Duke Energy Carolinas 17,490 15,975 16,012 15,077 Progress Energy 24,496 22,548 23,759 22,553 Duke Energy Progress 12,504 11,009 11,714 10,595 Duke Energy Florida 10,348 9,752 10,401 10,123 Duke Energy Ohio 4,165 3,871 3,518 3,310 Duke Energy Indiana 4,798 4,329 4,502 4,230 Piedmont 4,003 3,584 3,668 3,336 (a) Book value of long-term de bt includes $1.0 billion as of December 31, 2024, and December 31, 2023, of unamortized debt discount and premium, net in purchase accounting adjustments related to the mergers with Progress Energy and Piedmont that are excluded from fair value of long-term debt.
Duke Energy Carolinas
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Amounts for Assets and Liabilities	The following tables provide recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 (in millions) Total Fair Value Level 1 Level 2 Not Categorized NDTF cash and cash equivalents $ 62 $ 62 $ — $ — NDTF equity securities 4,751 4,721 2 28 NDTF debt securities 1,651 520 1,131 — Derivative assets 94 — 94 — Total assets 6,558 5,303 1,227 28 Derivative liabilities (88) — (88) — Net assets $ 6,470 $ 5,303 $ 1,139 $ 28 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Not Categorized NDTF cash and cash equivalents $ 51 $ 51 $ — $ — NDTF equity securities 4,196 4,159 — 37 NDTF debt securities 1,438 375 1,063 — Derivative assets 35 — 35 — Total assets 5,720 4,585 1,098 37 Derivative liabilities (260) — (260) — Net assets $ 5,460 $ 4,585 $ 838 $ 37
Progress Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Amounts for Assets and Liabilities	The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 NDTF cash and cash equivalents $ 77 $ 77 $ — $ 82 $ 82 $ — NDTF equity securities 3,482 3,482 — 3,082 3,082 — NDTF debt securities 1,409 502 907 1,294 454 840 Other debt securities 24 — 24 23 — 23 Other cash and cash equivalents 23 23 — 18 18 — Derivative assets 127 — 127 34 — 34 Total assets 5,142 4,084 1,058 4,533 3,636 897 Derivative liabilities (58) — (58) (234) — (234) Net assets $ 5,084 $ 4,084 $ 1,000 $ 4,299 $ 3,636 $ 663
Duke Energy Progress
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Amounts for Assets and Liabilities	The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 NDTF cash and cash equivalents $ 54 $ 54 $ — $ 55 $ 55 $ — NDTF equity securities 3,362 3,362 — 2,970 2,970 — NDTF debt securities 1,221 365 856 1,050 266 784 Other cash and cash equivalents 16 16 — 14 14 — Derivative assets 109 — 109 32 — 32 Total assets 4,762 3,797 965 4,121 3,305 816 Derivative liabilities (57) — (57) (219) — (219) Net assets $ 4,705 $ 3,797 $ 908 $ 3,902 $ 3,305 $ 597
Duke Energy Florida
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Amounts for Assets and Liabilities	The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 NDTF cash and cash equivalents $ 23 $ 23 $ — $ 27 $ 27 $ — NDTF equity securities 120 120 — 112 112 — NDTF debt securities 188 137 51 244 188 56 Other debt securities 24 — 24 23 — 23 Other cash and cash equivalents 3 3 — 3 3 — Derivative assets 18 — 18 2 — 2 Total assets 376 283 93 411 330 81 Derivative liabilities (1) — (1) (15) — (15) Net assets $ 375 $ 283 $ 92 $ 396 $ 330 $ 66
Duke Energy Indiana
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Amounts for Assets and Liabilities	The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Level 3 Total Fair Value Level 1 Level 2 Level 3 Other equity securities $ 89 $ 89 $ — $ — $ 98 $ 98 $ — $ — Other debt securities 56 — 56 — 64 — 64 — Other cash equivalents 1 1 — — 1 1 — — Derivative assets 44 — 36 8 25 5 7 13 Total assets 190 90 92 8 188 104 71 13 Derivative liabilities (3) (3) — — (18) (18) — — Net assets $ 187 $ 87 $ 92 $ 8 $ 170 $ 86 $ 71 $ 13
Reconciliation of Assets and Liabilities Measured at Fair Value an a Recurring Basis Using Unobservable Inputs	The following table provides a reconciliation of beginning and ending balances of assets and liabilities measured at fair value using Level 3 measurements. Derivatives (net) Years Ended December 31, (in millions) 2024 2023 Balance at beginning of period $ 13 $ 29 Purchases, sales, issuances and settlements: Purchases 27 42 Settlements (42) (68) Total gains included on the Consolidated Balance Sheet 10 10 Balance at end of period $ 8 $ 13
Piedmont
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement Amounts for Assets and Liabilities	The following table provides recorded balances for assets and liabilities measured at fair value on a recurring basis on the Consolidated Balance Sheets. December 31, 2024 December 31, 2023 (in millions) Total Fair Value Level 1 Level 2 Total Fair Value Level 1 Level 2 Derivative assets $ 1 $ 1 $ — $ 1 $ 1 $ — Derivative liabilities (94) — (94) (147) — (147) Net (liabilities) assets $ (93) $ 1 $ (94) $ (146) $ 1 $ (147)

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2024
Consolidated VIEs
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities	The following table summarizes the amounts and expiration dates of the credit facilities and associated restricted receivables described above. Duke Energy Duke Energy Duke Energy Duke Energy Carolinas Progress Florida (in millions) CRC DERF DEPR DEFR Expiration date (a) (c) April 2025 (b) Credit facility amount (a) (c) $ 400 (b) Amounts borrowed at December 31, 2024 — 500 400 — Amounts borrowed at December 31, 2023 312 500 400 325 Restricted Receivables at December 31, 2024 — 1,054 835 — Restricted Receivables at December 31, 2023 663 991 833 532 (a) In March 2024, Duke Energy repaid all outstanding CRC borrowing and terminated the related $350 million CRC credit facility. (b) In April 2024, Duke Energy Florida repaid all outstanding DEFR borrowing and terminated the related $325 million DEFR credit facility. (c) In January 2025, Duke Energy Carolinas repaid all outstanding DERF borrowing and terminated the related $500 million DERF credit facility.
Consolidated VIEs | Duke Energy Florida
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities	The following table summarizes the impact of this VIE on Duke Energy Florida's Consolidated Balance Sheets. (in millions) December 31, 2024 December 31, 2023 Inventory $ 494 462 Accounts Payable 208 188
Consolidated VIEs | DEFPF
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities	The following table summarizes the impact of DEFPF on Duke Energy Florida's Consolidated Balance Sheets. December 31, (in millions) 2024 2023 Regulatory Assets: Current 61 59 Current Assets: Other 35 37 Other Noncurrent Assets: Regulatory assets 741 803 Current Liabilities: Other 8 8 Current maturities of long-term debt 59 59 Long-Term Debt 773 831
Consolidated VIEs | DECNCSF and DEPNCSF
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities	The following table summarizes the impact of these VIEs on Duke Energy Carolinas’ and Duke Energy Progress’ Consolidated Balance Sheets. December 31, 2024 December 31, 2023 Duke Energy Carolinas Duke Energy Progress Duke Energy Carolinas Duke Energy Progress (in millions) DECNCSF DEPNCSF DEPSCSF DECNCSF DEPNCSF Regulatory Assets: Current $ 12 $ 39 $ 8 $ 12 $ 39 Current Assets: Other 9 27 13 9 31 Other Noncurrent Assets: Regulatory assets 189 620 155 196 643 Other Noncurrent Assets: Other 1 4 1 1 2 Current maturities of long-term debt 10 34 9 10 34 Current Liabilities: Other 2 10 7 3 8 Long-Term Debt 198 646 163 208 680
Non-consolidated VIEs
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities	The following tables summarize the impact of non-consolidated VIEs on the Consolidated Balance Sheets. December 31, 2024 Duke Energy Duke Duke Natural Gas Energy Energy (in millions) Investments Ohio Indiana Receivables from affiliated companies $ — $ — $ — Investments in equity method unconsolidated affiliates — — — Other noncurrent assets 17 — — Total assets $ 17 $ — $ — Other current liabilities 2 — — Other noncurrent liabilities — — — Total liabilities 2 $ — $ — Net assets $ 15 $ — $ — December 31, 2023 Duke Energy Duke Duke Natural Gas Energy Energy (in millions) Investments Ohio Indiana Receivables from affiliated companies $ — $ 150 $ 208 Investments in equity method unconsolidated affiliates 67 — — Other noncurrent assets 43 — — Total assets $ 110 $ 150 $ 208 Other current liabilities 4 — — Other noncurrent liabilities 5 — — Total liabilities $ 9 $ — $ — Net assets $ 101 $ 150 $ 208
Non-consolidated VIEs | CRC
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities	Key assumptions used in estimating fair value as of December 31, 2023, are detailed in the following table. Duke Energy Ohio Duke Energy Indiana Anticipated credit loss ratio 0.6 % 0.4 % Discount rate 6.1 % 6.1 % Receivable turnover rate 13.9 % 12.0 % The following table shows the gross and net receivables sold. See discussion under Consolidated VIEs for additional information related to CRC's termination in March 2024. Duke Energy Ohio Duke Energy Indiana December 31, December 31, (in millions) 2024 2023 2024 2023 Receivables sold $ — $ 361 $ — $ 351 Less: Retained interests — 150 — 208 Net receivables sold $ — $ 211 $ — $ 143 The following table shows sales and cash flows related to receivables sold and reflects CRC activity prior to its termination in March 2024. Duke Energy Ohio Duke Energy Indiana Years Ended December 31, Years Ended December 31, (in millions) 2024 2023 2022 2024 2023 2022 Sales Receivables sold $ 474 $ 2,578 $ 2,562 $ 473 $ 3,223 $ 3,744 Loss recognized on sale 7 34 18 6 39 26 Cash flows Cash proceeds from receivables sold 478 2,591 2,424 523 3,294 3,498 Collection fees received — 1 1 — 2 2 Return received on retained interests 4 19 10 4 25 15

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction	Supplemental requirements contracts that include contracted blocks of energy and capacity at contractually fixed prices have the following estimated remaining performance obligations: Remaining Performance Obligations (in millions) 2025 2026 2027 2028 2029 Thereafter Total Duke Energy Carolinas $ 12 $ 12 $ 12 $ 12 $ — $ — $ 48 Progress Energy 36 43 13 13 13 42 160 Duke Energy Progress 6 6 6 6 6 20 50 Duke Energy Florida 30 37 7 7 7 22 110 Duke Energy Indiana 17 17 15 5 — — 54 Remaining Performance Obligations (in millions) 2025 2026 2027 2028 2029 Thereafter Total Piedmont $ 64 $ 51 $ 49 $ 46 $ 44 $ 151 $ 405
Disaggregation of Revenue	Disaggregated revenues are presented as follows: Year Ended December 31, 2024 Duke Duke Duke Duke Duke (in millions) Duke Energy Progress Energy Energy Energy Energy By market or type of customer Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Electric Utilities and Infrastructure Residential $ 12,901 $ 4,150 $ 6,592 $ 2,872 $ 3,720 $ 1,009 $ 1,149 $ — Commercial 8,207 3,080 3,718 1,754 1,964 590 818 — Industrial 3,427 1,488 1,066 742 324 149 724 — Wholesale 2,205 547 1,414 1,268 146 51 194 — Other revenues 1,029 350 674 343 331 89 107 — Total Electric Utilities and Infrastructure revenue from contracts with customers $ 27,769 $ 9,615 $ 13,464 $ 6,979 $ 6,485 $ 1,888 $ 2,992 $ — Gas Utilities and Infrastructure Residential $ 1,320 $ — $ — $ — $ — $ 427 $ — $ 893 Commercial 639 — — — — 153 — 486 Industrial 158 — — — — 33 — 125 Power Generation — — — — — — — 33 Other revenues 126 — — — — 26 — 100 Total Gas Utilities and Infrastructure revenue from contracts with customers $ 2,243 $ — $ — $ — $ — $ 639 $ — $ 1,637 Other Revenue from contracts with customers $ 38 $ — $ — $ — $ — $ — $ — $ — Total revenue from contracts with customers $ 30,050 $ 9,615 $ 13,464 $ 6,979 $ 6,485 $ 2,527 $ 2,992 $ 1,637 Other revenue sources (a) $ 307 $ 103 $ 169 $ 38 $ 110 $ 18 $ 48 $ 92 Total revenues $ 30,357 $ 9,718 $ 13,633 $ 7,017 $ 6,595 $ 2,545 $ 3,040 $ 1,729 Year Ended December 31, 2023 Duke Duke Duke Duke Duke (in millions) Duke Energy Progress Energy Energy Energy Energy By market or type of customer Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Electric Utilities and Infrastructure Residential $ 12,098 $ 3,409 $ 6,510 $ 2,540 $ 3,970 $ 947 $ 1,233 $ — Commercial 7,895 2,670 3,762 1,588 2,174 552 911 — Industrial 3,416 1,334 1,105 733 372 191 786 — Wholesale 2,175 492 1,388 1,240 148 46 248 — Other revenues 962 318 590 325 265 93 157 — Total Electric Utilities and Infrastructure revenue from contracts with customers $ 26,546 $ 8,223 $ 13,355 $ 6,426 $ 6,929 $ 1,829 $ 3,335 $ — Gas Utilities and Infrastructure Residential $ 1,226 $ — $ — $ — $ — $ 435 $ — $ 792 Commercial 605 — — — — 154 — 450 Industrial 141 — — — — 26 — 115 Power Generation — — — — — — — 31 Other revenues 119 — — — — 24 — 95 Total Gas Utilities and Infrastructure revenue from contracts with customers $ 2,091 $ — $ — $ — $ — $ 639 $ — $ 1,483 Other Revenue from contracts with customers $ 37 $ — $ — $ — $ — $ — $ — $ — Total revenue from contracts with customers $ 28,674 $ 8,223 $ 13,355 $ 6,426 $ 6,929 $ 2,468 $ 3,335 $ 1,483 Other revenue sources (a) $ 386 $ 65 $ 189 $ 62 $ 107 $ 39 $ 64 $ 145 Total revenues $ 29,060 $ 8,288 $ 13,544 $ 6,488 $ 7,036 $ 2,507 $ 3,399 $ 1,628 Year Ended December 31, 2022 Duke Duke Duke Duke Duke (in millions) Duke Energy Progress Energy Energy Energy Energy By market or type of customer Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Electric Utilities and Infrastructure Residential $ 11,377 $ 3,275 $ 5,812 $ 2,378 $ 3,434 $ 862 $ 1,430 $ — Commercial 7,356 2,396 3,396 1,480 1,916 517 1,049 — Industrial 3,504 1,251 1,095 770 325 202 956 — Wholesale 2,856 561 1,785 1,346 439 127 383 — Other revenues 795 372 994 768 226 61 19 — Total Electric Utilities and Infrastructure revenue from contracts with customers $ 25,888 $ 7,855 $ 13,082 $ 6,742 $ 6,340 $ 1,769 $ 3,837 $ — Gas Utilities and Infrastructure Residential $ 1,462 $ — $ — $ — $ — $ 488 $ — $ 974 Commercial 765 — — — — 180 — 585 Industrial 170 — — — — 24 — 144 Power Generation — — — — — — — 94 Other revenues 360 — — — — 25 — 271 Total Gas Utilities and Infrastructure revenue from contracts with customers $ 2,757 $ — $ — $ — $ — $ 717 $ — $ 2,068 Other Revenue from contracts with customers $ 30 $ — $ — $ — $ — $ — $ — $ — Total revenue from contracts with customers $ 28,675 $ 7,855 $ 13,082 $ 6,742 $ 6,340 $ 2,486 $ 3,837 $ 2,068 Other revenue sources (a) $ 93 $ 2 $ 43 $ 11 $ 13 $ 28 $ 85 $ 56 Total revenues $ 28,768 $ 7,857 $ 13,125 $ 6,753 $ 6,353 $ 2,514 $ 3,922 $ 2,124 (a) Other revenue sources include revenues from leases, derivatives and alternative revenue programs that are not considered revenues from contracts with customers. Alternative revenue programs in certain jurisdictions include regulatory mechanisms that periodically adjust for over or under collection of related revenues.
Accounts Receivable, Allowance for Credit Loss	The following table presents the reserve for credit losses for trade and other receivables. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Balance at December 31, 2021 $ 121 $ 42 $ 36 $ 21 $ 16 $ 4 $ 3 $ 15 Write-Offs (158) (73) (70) (36) (34) — — (12) Credit Loss Expense 160 40 72 17 55 2 1 11 Other Adjustments 93 59 43 42 (1) — — — Balance at December 31, 2022 $ 216 $ 68 $ 81 $ 44 $ 36 $ 6 $ 4 $ 14 Write-Offs (164) (71) (84) (41) (42) — — (10) Credit Loss Expense 101 35 48 12 37 3 1 7 Other Adjustments 52 24 29 29 — — — — Balance at December 31, 2023 $ 205 $ 56 $ 74 $ 44 $ 31 $ 9 $ 5 $ 11 Write-Offs (132) (55) (73) (45) (28) — — (4) Credit Loss Expense 98 39 51 25 26 3 2 3 Other Adjustments 38 29 21 20 — 31 8 — Balance at December 31, 2024 $ 209 $ 69 $ 73 $ 44 $ 29 $ 43 $ 15 $ 10

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Schedule of Earnings Per Share	The following table presents Duke Energy’s basic and diluted EPS calculations, the weighted average number of common shares outstanding and common and preferred share dividends declared. Years Ended December 31, (in millions, except per share amounts) 2024 2023 2022 Net Income available to Duke Energy common stockholders $ 4,402 $ 2,735 $ 2,444 Less: Income (Loss) from discontinued operations attributable to Duke Energy common stockholders 7 (1,391) (1,215) Accumulated preferred stock dividends adjustment 14 — — Less: Impact of participating securities 6 6 2 Income from continuing operations available to Duke Energy common stockholders $ 4,403 $ 4,120 $ 3,657 Income (Loss) from discontinued operations, net of tax $ 10 $ (1,455) $ (1,323) Add: (Income) Loss attributable to NCI (3) 64 108 Income (Loss) from discontinued operations attributable to Duke Energy common stockholders $ 7 $ (1,391) $ (1,215) Weighted average common shares outstanding – basic and diluted 772 771 770 EPS from continuing operations available to Duke Energy common stockholders Basic and Diluted (a) $ 5.70 $ 5.35 $ 4.74 Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders Basic and Diluted (a) $ 0.01 $ (1.81) $ (1.57) Potentially dilutive items excluded from the calculation (b) 2 2 2 Dividends declared per common share $ 4.14 $ 4.06 $ 3.98 Dividends declared on Series A preferred stock per depositary share (c) $ 1.437 $ 1.437 $ 1.437 Dividends declared on Series B preferred stock per share (d) $ 48.750 $ 48.750 $ 48.750 (a) For the periods presented subsequent to issuance in April 2023, the convertible notes were excluded from the calculations of diluted EPS because the effect was antidilutive. (b) Performance stock awards were not included in the dilutive securities calculation because the performance measures related to the awards had not been met. (c) 5.75% Series A Cumulative Redeemable Perpetual Preferred Stock dividends are payable quarterly in arrears on the 16th day of March, June, September and December. The preferred stock has a $25 liquidation preference per depositary share. (d) 4.875% Series B Fixed-Rate Reset Cumulative Redeemable Perpetual Preferred Stock dividends were payable semiannually in arrears on the 16th day of March and September. The preferred stock was redeemed on September 16, 2024.
Schedule of ATM Equity Issuances Pursuant to Forward Contracts	The following table shows ATM equity issuances pursuant to forward contracts executed during the year ended December 31, 2024. Tranche Shares Priced Initial Forward Price 1 802,371 $ 92.77 2 729,674 $ 101.10 3 737,280 $ 100.99 4 662,266 $ 111.45 Total 2,931,591

Severance (Tables)

Severance (Tables)	12 Months Ended
	Dec. 31, 2024
Restructuring and Related Activities [Abstract]
Schedule of Severance Expense	The following table presents the direct and allocated severance and related charges accrued for 341 employees in 2024, 682 employees in 2023 and 233 employees in 2022 by the Duke Energy Registrants within Operation, maintenance and other on the Consolidated Statements of Operations. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Year Ended December 31, 2024 (a)(b) $ (28) $ (11) $ (9) $ (5) $ (4) $ (2) $ (4) $ (2) Year Ended December 31, 2023 (c)(d)(e) 102 53 33 21 12 3 6 4 Year Ended December 31, 2022 (f)(g) 65 40 20 17 3 1 2 2 (a) Includes adjustments associated with 2022 severance charges of approximately $(1) million and $(1) million for Duke Energy and Duke Energy Carolinas, respectively. (b) Includes adjustments associated with 2023 severance charges of approximately $(27) million, $(11) million, $(9) million, $(5) million, $(4) million, $(2) million, $(4) million and $(2) million for Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont, respectively. (c) Includes amortization of deferred severance charges of approximately $22 million, $14 million, $8 million and $8 million for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. (d) Includes adjustments associated with 2021 severance charges of approximately $(6) million, $(2) million, $(3) million, $(2) million, $(1) million and $(1) million for Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida and Duke Energy Indiana, respectively. (e) Includes adjustments associated with 2022 severance charges of approximately $(14) million, $(7) million, $(5) million, $(3) million, $(2) million, $(1) million and $(1) million for Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio and Duke Energy Indiana, respectively. (f) Includes amortization of deferred severance charges of approximately $33 million, $22 million, $11 million and $11 million for Duke Energy, Duke Energy Carolinas, Progress Energy and Duke Energy Progress, respectively. (g) Includes adjustments associated with 2021 severance charges of approximately $(19) million, $(6) million, $(8) million, $(4) million, $(4) million, $(1) million, $(2) million and $(1) million for Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont, respectively.
Schedule of Severance Liability	The table below presents the severance liability for past and ongoing severance plans including the plans described above. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Balance at December 31, 2022 $ 64 $ 15 $ 6 $ 4 $ 2 $ — $ — $ 1 Provision/Adjustments 80 30 13 6 7 1 4 2 Cash Reductions (42) (10) (3) (2) (1) — — (1) Balance at December 31, 2023 $ 102 $ 35 $ 16 $ 8 $ 8 $ 1 $ 4 $ 2 Provision/Adjustments (28) (6) (3) (1) (2) (1) (3) (1) Cash Reductions (55) (21) (11) (6) (5) — (1) (1) Balance at December 31, 2024 $ 19 $ 8 $ 2 $ 1 $ 1 $ — $ — $ —

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Total Stock-Based Compensation Expense, net of tax	The following table summarizes the total expense recognized by the Duke Energy Registrants, net of tax, for stock-based compensation. Years Ended December 31, (in millions) 2024 2023 2022 Duke Energy $ 70 $ 71 $ 74 Duke Energy Carolinas 25 25 27 Progress Energy 28 28 27 Duke Energy Progress 17 17 17 Duke Energy Florida 11 11 10 Duke Energy Ohio 5 5 5 Duke Energy Indiana 7 7 7 Piedmont 4 4 4
Schedule of Stock-Based Compensation Expense	Duke Energy's pretax stock-based compensation costs, the tax benefit associated with stock-based compensation expense and stock-based compensation costs capitalized are included in the following table. Years Ended December 31, (in millions) 2024 2023 2022 RSU awards $ 49 $ 54 $ 58 Performance awards 47 43 42 Pretax stock-based compensation cost $ 96 $ 97 $ 100 Stock-based compensation costs capitalized 6 6 5 Stock-based compensation expense $ 90 $ 91 $ 95 Tax benefit associated with stock-based compensation expense $ 20 $ 20 $ 21
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	The following table includes information related to RSU awards. Years Ended December 31, 2024 2023 2022 Shares granted (in thousands) 598 670 654 Fair value (in millions) $ 59 $ 65 $ 64 The following table summarizes information about RSU awards outstanding. Weighted Average Shares Grant Date Fair Value (in thousands) (per share) Outstanding at December 31, 2023 1,115 $ 96 Granted 598 99 Vested (581) 95 Forfeited (73) 98 Outstanding at December 31, 2024 1,059 98 RSU awards expected to vest 1,014 98
Schedule of Performance Awards	The following table includes information related to stock-based performance awards. Years Ended December 31, 2024 2023 2022 Shares granted assuming target performance (in thousands) 440 422 408 Fair value (in millions) $ 42 $ 42 $ 40
Schedule of Nonvested Performance-based Units Activity	The following table summarizes information about stock-based performance awards outstanding and assumes payout at the target level. Weighted Average Shares Grant Date Fair Value (in thousands) (per share) Outstanding at December 31, 2023 1,115 $ 96 Granted 440 95 Vested (338) 88 Forfeited (30) 96 Outstanding at December 31, 2024 1,187 98 Stock-based performance awards expected to vest 1,156 98

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Pension Plan Contributions	The following table includes information related to the Duke Energy Registrants’ contributions to its qualified defined benefit pension plans. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Contributions Made: 2024 $ 100 $ 26 $ 23 $ 14 $ 9 $ 5 $ 8 $ 3 2023 100 26 22 13 9 5 8 3 2022 58 15 13 8 5 3 5 2
Fair Value and Allocation of Plan Assets	The following table includes the target asset allocations by asset class at December 31, 2024, and the actual asset allocations for the RCBP assets. Actual Allocation at Target December 31, Allocation 2024 2023 Global equity securities 45 % 44 % 45 % Global private equity securities 2 % 1 % 2 % Debt securities 35 % 33 % 35 % Return seeking debt securities 7 % 7 % 6 % Hedge funds 4 % 5 % 4 % Real estate and cash 7 % 10 % 8 % Total 100 % 100 % 100 % The following table includes the target asset allocations by asset class at December 31, 2024, and the actual asset allocations for the DELPP assets. Actual Allocation at Target December 31, Allocation 2024 2023 Global equity securities 14 % 15 % 14 % Global private equity securities 1 % — % — % Debt securities 80 % 79 % 79 % Return seeking debt securities 2 % 2 % 2 % Hedge funds 1 % — % 2 % Real estate and cash 2 % 4 % 3 % Total 100 % 100 % 100 % The following table presents target and actual asset allocations for the VEBA trusts at December 31, 2024. Actual Allocation at Target December 31, Allocation 2024 2023 U.S. equity securities 29 % 34 % 30 % Non-U.S. equity securities 15 % 15 % 15 % Real estate 5 % 7 % 7 % Debt securities 47 % 31 % 30 % Cash 4 % 13 % 18 % Total 100 % 100 % 100 % The following tables provide the fair value measurement amounts for the Duke Energy Corporation Master Retirement Trust qualified pension and other post-retirement assets. December 31, 2024 Total Fair Not (in millions) Value Level 1 Level 2 Level 3 Categorized (b) Equity securities $ 2,461 $ 2,216 $ 231 $ — $ 14 Corporate debt securities 2,415 — 2,415 — — Short-term investment funds 310 — 310 — — Partnership interests 68 — — 68 — Hedge funds 164 — — — 164 U.S. government securities 1,398 — 1,398 — — Governments bonds – foreign 128 — 128 — — Cash 15 15 — — — Government and commercial mortgage-backed securities 1 — 1 — — Net pending transactions and other investments 9 11 (2) — — Total assets (a) $ 6,969 $ 2,242 $ 4,481 $ 68 $ 178 (a) Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont were allocated approximately 27%, 33%, 15%, 18%, 5%, 7% and 3%, respectively, of the Duke Energy Corporation Master Retirement Trust at December 31, 2024. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages. (b) Certain investments that are measured at fair value using the net asset value per share practical expedient have not been categorized in the fair value hierarchy. December 31, 2023 Total Fair Not (in millions) Value Level 1 Level 2 Level 3 Categorized (b) Equity securities $ 2,221 $ 1,995 $ 211 $ — $ 15 Corporate debt securities 2,807 — 2,807 — — Short-term investment funds 233 — 233 — — Partnership interests 76 — — 76 — Hedge funds 164 — — — 164 U.S. government securities 1,571 — 1,571 — — Governments bonds – foreign 107 — 107 — — Cash 7 7 — — — Government and commercial mortgage-backed securities 1 — 1 — — Net pending transactions and other investments 54 40 14 — — Total assets (a) $ 7,241 $ 2,042 $ 4,944 $ 76 $ 179 (a) Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, Duke Energy Indiana and Piedmont were allocated approximately 27%, 33%, 15%, 18%, 5%, 7% and 3%, respectively, of the Duke Energy Corporation Master Retirement Trust at December 31, 2023. Accordingly, all amounts included in the table above are allocable to the Subsidiary Registrants using these percentages. (b) Certain investments that are measured at fair value using the net asset value per share practical expedient have not been categorized in the fair value hierarchy. The following tables provide the fair value measurement amounts for VEBA trust assets. December 31, 2024 Total Fair (in millions) Value Level 2 Cash and cash equivalents $ 3 $ 3 Real estate 1 1 Equity securities 10 10 Debt securities 6 6 Total assets $ 20 $ 20 December 31, 2023 Total Fair (in millions) Value Level 2 Cash and cash equivalents $ 4 $ 4 Real estate 1 1 Equity securities 9 9 Debt securities 6 6 Total assets $ 20 $ 20
Master Trust Level 3 Rollforward	The following table provides a reconciliation of beginning and ending balances of Duke Energy Corporation Master Retirement Trust qualified pension and other post-retirement assets at fair value on a recurring basis where the determination of fair value includes significant unobservable inputs (Level 3). (in millions) 2024 2023 Balance at January 1 $ 76 $ 62 Sales (10) (8) Total gains and other, net 2 22 Balance at December 31 $ 68 $ 76
Employee Savings Plan Matching Contributions	The following table includes pretax employer matching contributions made by Duke Energy and expensed by the Subsidiary Registrants. Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Years ended December 31, 2024 $ 257 $ 81 $ 72 $ 43 $ 29 $ 6 $ 13 $ 14 2023 238 75 62 40 22 6 13 13 2022 246 76 65 43 22 6 12 13
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Components of Net Periodic Pension Costs	Components of Net Periodic Pension Costs Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 114 $ 37 $ 32 $ 19 $ 13 $ 3 $ 6 $ 4 Interest cost on projected benefit obligation 325 78 103 47 56 17 26 9 Expected return on plan assets (613) (161) (217) (99) (116) (25) (42) (20) Amortization of actuarial loss 36 8 10 6 5 1 4 3 Amortization of prior service credit (13) (1) — — — — (2) (7) Amortization of settlement charges (c) 32 12 10 9 2 2 2 5 Net periodic pension costs (a)(b) $ (119) $ (27) $ (62) $ (18) $ (40) $ (2) $ (6) $ (6) Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 117 $ 38 $ 33 $ 19 $ 13 $ 3 $ 6 $ 4 Interest cost on projected benefit obligation 344 84 107 49 57 18 27 9 Expected return on plan assets (588) (160) (198) (93) (104) (24) (40) (20) Amortization of actuarial loss 10 2 4 2 2 — 2 — Amortization of prior service credit (14) (1) — — — — (2) (7) Amortization of settlement charges 19 9 5 3 1 — 1 4 Net periodic pension costs (a)(b) $ (112) $ (28) $ (49) $ (20) $ (31) $ (3) $ (6) $ (10) Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 152 $ 48 $ 43 $ 25 $ 17 $ 4 $ 9 $ 5 Interest cost on projected benefit obligation 249 59 77 35 41 13 20 8 Expected return on plan assets (558) (152) (183) (88) (94) (23) (37) (24) Amortization of actuarial loss 81 16 23 12 12 4 9 5 Amortization of prior service credit (18) (3) — — — — (2) (7) Amortization of settlement charges (c) 32 9 8 7 1 5 1 7 MRVA method change 24 — 24 — 24 — — — Net periodic pension costs (a)(b) $ (38) $ (23) $ (8) $ (9) $ 1 $ 3 $ — $ (6) (a) Duke Energy amounts exclude $2 million, $3 million and $3 million for the years ended December 2024, 2023 and 2022, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006. (b) Duke Energy Ohio amounts exclude $1 million, $1 million and $1 million for the years ended December 2024, 2023 and 2022, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006. (c) Includes settlement charges not deferred as a regulatory asset.
Amounts Recognized in AOCI and Regulatory Assets and Liabilities	Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Regulatory assets, net increase $ 147 $ 39 $ 33 $ 1 $ 31 $ 11 $ 6 $ 16 Accumulated other comprehensive loss (income) Deferred income tax benefit $ 3 $ — $ — $ — $ — $ — $ — $ — Amortization of prior year service credit 1 — — — — — — — Amortization of prior year actuarial losses (12) — 1 — — — (2) — Net amount recognized in accumulated other comprehensive income $ (8) $ — $ 1 $ — $ — $ — $ (2) $ — Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Regulatory assets, net increase (decrease) $ 5 $ (14) $ 8 $ — $ 9 $ (3) $ (2) $ 13 Accumulated other comprehensive loss (income) Amortization of prior year actuarial losses (2) — — — — — — — Net amount recognized in accumulated other comprehensive income $ (2) $ — $ — $ — $ — $ — $ — $ —
Reconciliation of Funded Status to Net Amount Recognized	Reconciliation of Funded Status to Net Amount Recognized Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Change in Projected Benefit Obligation Obligation at prior measurement date $ 6,299 $ 1,514 $ 1,990 $ 911 $ 1,069 $ 325 $ 496 $ 175 Service cost 107 36 30 18 12 3 6 4 Interest cost 325 78 103 47 56 17 26 9 Actuarial (gain)/loss (106) (13) (50) (27) (22) (3) (16) 5 Benefits paid (645) (177) (198) (111) (88) (33) (41) (12) Transfers — 6 — — — — — — Obligation at measurement date $ 5,980 $ 1,444 $ 1,875 $ 838 $ 1,027 $ 309 $ 471 $ 181 Accumulated Benefit Obligation at measurement date $ 5,948 $ 1,444 $ 1,861 $ 838 $ 1,013 $ 304 $ 466 $ 181 Change in Fair Value of Plan Assets Plan assets at prior measurement date $ 7,162 $ 1,853 $ 2,453 $ 1,120 $ 1,316 $ 326 $ 514 $ 213 Employer contributions 100 26 23 14 9 5 8 3 Actual return on plan assets 270 73 98 46 53 11 17 10 Benefits paid (645) (177) (198) (111) (88) (33) (41) (12) Transfers — 6 — — — — — — Plan assets at measurement date $ 6,887 $ 1,781 $ 2,376 $ 1,069 $ 1,290 $ 309 $ 498 $ 214 Funded status of plan $ 907 $ 337 $ 501 $ 231 $ 263 $ — $ 27 $ 33 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Change in Projected Benefit Obligation Obligation at prior measurement date $ 6,358 $ 1,554 $ 1,975 $ 909 $ 1,055 $ 333 $ 499 $ 170 Service cost 110 36 30 18 12 3 6 3 Interest cost 344 84 107 49 57 18 27 9 Actuarial loss 94 11 47 18 29 2 4 9 Benefits paid (607) (177) (159) (80) (78) (31) (40) (16) Transfers — 6 (10) (3) (6) — — — Obligation at measurement date $ 6,299 $ 1,514 $ 1,990 $ 911 $ 1,069 $ 325 $ 496 $ 175 Accumulated Benefit Obligation at measurement date $ 6,267 $ 1,517 $ 1,975 $ 912 $ 1,053 $ 317 $ 494 $ 176 Change in Fair Value of Plan Assets Plan assets at prior measurement date $ 6,993 $ 1,815 $ 2,371 $ 1,083 $ 1,271 $ 323 $ 501 $ 203 Employer contributions 100 26 22 13 9 5 8 3 Actual return on plan assets 676 183 229 107 120 29 45 23 Benefits paid (607) (177) (159) (80) (78) (31) (40) (16) Transfers — 6 (10) (3) (6) — — — Plan assets at measurement date $ 7,162 $ 1,853 $ 2,453 $ 1,120 $ 1,316 $ 326 $ 514 $ 213 Funded status of plan $ 863 $ 339 $ 463 $ 209 $ 247 $ 1 $ 18 $ 38
Amounts Recognized in the Consolidated Balance Sheet	Amounts Recognized in the Consolidated Balance Sheets December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Prefunded pension (a) $ 907 $ 337 $ 501 $ 231 $ 263 $ 74 $ 101 $ 33 Noncurrent pension liability (b) $ — $ — $ — $ — $ — $ 74 $ 74 $ — Net asset (liability) recognized $ 907 $ 337 $ 501 $ 231 $ 263 $ — $ 27 $ 33 Regulatory assets $ 2,168 $ 570 $ 711 $ 354 $ 356 $ 100 $ 182 $ 113 Accumulated other comprehensive income (loss) Deferred income tax benefit $ (24) $ — $ (1) $ — $ — $ — $ — $ — Net actuarial loss 115 — 4 — — — — — Net amounts recognized in accumulated other comprehensive income $ 91 $ — $ 3 $ — $ — $ — $ — $ — December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Prefunded pension (a) $ 863 $ 339 $ 463 $ 209 $ 247 $ 74 $ 105 $ 38 Noncurrent pension liability (b) $ — $ — $ — $ — $ — $ 73 $ 87 $ — Net asset (liability) recognized $ 863 $ 339 $ 463 $ 209 $ 247 $ 1 $ 18 $ 38 Regulatory assets $ 2,021 $ 531 $ 678 $ 353 $ 325 $ 89 $ 176 $ 97 Accumulated other comprehensive (income) loss Deferred income tax benefit $ (27) $ — $ (1) $ — $ — $ — $ — $ — Prior service credit (1) — — — — — — — Net actuarial loss 127 — 3 — — — 2 — Net amounts recognized in accumulated other comprehensive loss $ 99 $ — $ 2 $ — $ — $ — $ 2 $ — (a) Included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets. (b) Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.
Information for Plans with Accumulated Benefit Obligation in Excess of Plan Assets	Information for Plans with Accumulated Benefit Obligation in Excess of Plan Assets December 31, 2024 Duke Duke Energy Energy (in millions) Ohio Indiana Projected benefit obligation $ 106 $ 203 Accumulated benefit obligation 101 197 Fair value of plan assets 32 128 December 31, 2023 Duke Duke Energy Energy (in millions) Ohio Indiana Projected benefit obligation $ 105 $ 208 Accumulated benefit obligation 100 203 Fair value of plan assets 31 121
Assumptions Used for Pension Benefits Accounting	The following tables present the assumptions or range of assumptions used for pension benefit accounting. December 31, 2024 2023 2022 Benefit Obligations Discount rate 5.70% 5.40% 5.60% Interest crediting rate 4.78% 4.15% 4.35% Salary increase 3.50 % – 4.00% 3.50 % – 4.00% 3.50 % – 4.00% Net Periodic Benefit Cost Discount rate 5.00 % – 5.40% 5.60% 2.90 % – 5.70% Interest crediting rate 4.15% 4.35% 4.00% Salary increase 3.50 % – 4.00% 3.50 % – 4.00% 3.50 % – 4.00% Expected long-term rate of return on plan assets 8.50 % – 7.00 % 6.50 – 8.25% 6.50%
Expected Benefit Payments	Expected Benefit Payments Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Years ending December 31, 2025 $ 628 $ 173 $ 183 $ 98 $ 84 $ 31 $ 43 $ 19 2026 606 161 179 91 87 30 42 18 2027 586 153 175 87 87 29 42 17 2028 572 149 173 85 87 29 41 17 2029 546 138 167 79 87 29 42 16 2030-2034 2,407 567 762 338 420 129 197 73
Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Components of Net Periodic Pension Costs	Components of Net Periodic Other Post-Retirement Benefit Costs Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 2 $ — $ — $ — $ — $ — $ — $ — Interest cost on accumulated post-retirement benefit obligation 17 3 7 4 3 1 1 1 Expected return on plan assets (11) (8) — — — — — (2) Amortization of actuarial (gain) loss (6) (2) 8 6 2 (2) (4) — Amortization of prior service credit (21) (4) (11) (6) (5) — (5) — Net periodic post-retirement benefit costs (a)(b) $ (19) $ (11) $ 4 $ 4 $ — $ (1) $ (8) $ (1) Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 2 $ 1 $ — $ — $ — $ — $ — $ — Interest cost on accumulated post-retirement benefit obligation 22 5 9 5 4 1 1 1 Expected return on plan assets (11) (7) — — — — — (2) Amortization of actuarial (gain) loss (6) (3) 8 5 2 (2) (3) — Amortization of prior service credit (23) (5) (11) (6) (5) — (5) — Net periodic post-retirement benefit costs (a)(b) $ (16) $ (9) $ 6 $ 4 $ 1 $ (1) $ (7) $ (1) Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Service cost $ 3 $ 1 $ — $ — $ — $ — $ — $ — Interest cost on accumulated post-retirement benefit obligation 17 4 7 4 3 1 1 1 Expected return on plan assets (10) (6) — — — — — (2) Amortization of actuarial loss 2 — 1 1 1 — — — Amortization of prior service credit (8) (3) (2) (1) (1) — — (2) Net periodic post-retirement benefit costs (a)(b) $ 4 $ (4) $ 6 $ 4 $ 3 $ 1 $ 1 $ (3) (a) Duke Energy amounts exclude $4 million, $4 million and $4 million for the years ended December 2024, 2023 and 2022, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006. (b) Duke Energy Ohio amounts exclude $1 million, $1 million and $1 million for the years ended December 2024, 2023 and 2022, respectively, of regulatory asset amortization resulting from purchase accounting adjustments associated with Duke Energy's merger with Cinergy in April 2006.
Amounts Recognized in AOCI and Regulatory Assets and Liabilities	Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets and Liabilities Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Regulatory assets, net (decrease) increase $ (42) $ (62) $ 23 $ 17 $ 5 $ (1) $ (3) $ — Regulatory liabilities, net (decrease) increase $ (76) $ (71) $ 12 $ 12 $ — $ (3) $ (12) $ — Accumulated other comprehensive (income) loss Amortization of prior year actuarial gain 1 — — — — — — — Net amount recognized in accumulated other comprehensive income $ 1 $ — $ — $ — $ — $ — $ — $ — Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Regulatory assets, net increase (decrease) $ 73 $ 79 $ (7) $ (5) $ — $ (2) $ (2) $ 1 Regulatory liabilities, net increase (decrease) $ 41 $ 62 $ — $ — $ — $ (4) $ (8) $ — Accumulated other comprehensive (income) loss Amortization of prior year service credit $ 1 $ — $ — $ — $ — $ — $ — $ — Amortization of prior year actuarial gain $ — $ — $ (1) $ — $ — $ — $ — $ — Net amount recognized in accumulated other comprehensive income $ 1 $ — $ (1) $ — $ — $ — $ — $ —
Reconciliation of Funded Status to Net Amount Recognized	Reconciliation of Funded Status to Accrued Other Post-Retirement Benefit Costs Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Change in Benefit Obligation Accumulated post-retirement benefit obligation at prior measurement date $ 347 $ 69 $ 146 $ 84 $ 60 $ 19 $ 24 $ 15 Service cost 2 — — — — — — — Interest cost 17 3 7 4 3 1 1 1 Plan participants' contributions 3 1 1 — — — — — Actuarial losses (gains) 2 (2) 7 5 3 — (2) — Benefits paid (37) (8) (15) (6) (6) (2) (3) (1) Accumulated post-retirement benefit obligation at measurement date $ 334 $ 63 $ 146 $ 87 $ 60 $ 18 $ 20 $ 15 Change in Fair Value of Plan Assets Plan assets at prior measurement date $ 156 $ 102 $ (1) $ (1) $ (1) $ 7 $ 3 $ 27 Actual return on plan assets 7 4 — — — — — 3 Benefits paid (37) (8) (15) (6) (6) (2) (3) (1) Tax refund 5 4 — — — — — — Employer contributions 27 4 14 7 7 2 — — Plan participants' contributions 3 1 1 — — — — — Plan assets at measurement date $ 161 $ 107 $ (1) $ — $ — $ 7 $ — $ 29 Funded status of plan $ (173) $ 44 $ (147) $ (87) $ (60) $ (11) $ (20) $ 14 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Change in Benefit Obligation Accumulated post-retirement benefit obligation at prior measurement date $ 437 $ 112 $ 168 $ 95 $ 69 $ 20 $ 30 $ 21 Service cost 2 1 — — — — — — Interest cost 22 5 9 5 4 1 1 1 Plan participants' contributions 4 1 1 1 1 — — — Actuarial (gains) losses (10) (2) (10) (6) (4) 1 (1) 1 Transfers (50) (34) — — — — — (6) Benefits paid (58) (14) (22) (11) (10) (3) (6) (2) Accumulated post-retirement benefit obligation at measurement date $ 347 $ 69 $ 146 $ 84 $ 60 $ 19 $ 24 $ 15 Change in Fair Value of Plan Assets Plan assets at prior measurement date $ 162 $ 105 $ — $ (2) $ (2) $ 7 $ 3 $ 31 401(h) asset transfers — (8) — — — — — — Actual return on plan assets 19 8 — — — 1 — 4 Benefits paid (58) (14) (22) (11) (10) (3) (6) (2) Transfers (13) 4 — — — — — (7) Employer contributions 42 6 20 11 10 2 6 1 Plan participants' contributions 4 1 1 1 1 — — — Plan assets at measurement date $ 156 $ 102 $ (1) $ (1) $ (1) $ 7 $ 3 $ 27 Funded status of plan $ (191) $ 33 $ (147) $ (85) $ (61) $ (12) $ (21) $ 12
Amounts Recognized in the Consolidated Balance Sheet	Amounts Recognized in the Consolidated Balance Sheets December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Prefunded post-retirement benefit (a) $ — $ 44 $ — $ — $ — $ 1 $ — $ 14 Current post-retirement liability (b) 8 — 5 3 2 1 — — Noncurrent post-retirement liability (c) 165 — 142 84 58 11 20 — Net liability (asset) recognized $ 173 $ (44) $ 147 $ 87 $ 60 $ 11 $ 20 $ (14) Regulatory assets $ 81 $ 17 $ 62 $ 46 $ 16 $ 1 $ 20 $ 1 Regulatory liabilities $ 154 $ 35 $ 12 $ 12 $ — $ 14 $ 62 $ — Accumulated other comprehensive (income) loss Deferred income tax expense $ 3 $ — $ — $ — $ — $ — $ — $ — Net actuarial gain (12) — (1) — — — — — Net amounts recognized in accumulated other comprehensive income $ (9) $ — $ (1) $ — $ — $ — $ — $ — December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Prefunded post-retirement benefit (a) $ — $ 61 $ — $ — $ — $ 1 $ — $ 12 Current post-retirement liability (b) 12 3 5 3 2 1 — — Noncurrent post-retirement liability (c) 179 25 142 82 59 12 21 — Net liability (asset) recognized $ 191 $ (33) $ 147 $ 85 $ 61 $ 12 $ 21 $ (12) Regulatory assets $ 123 $ 79 $ 39 $ 29 $ 11 $ 2 $ 23 $ 1 Regulatory liabilities $ 230 $ 106 $ — $ — $ — $ 17 $ 74 $ — Accumulated other comprehensive (income) loss Deferred income tax expense $ 3 $ — $ — $ — $ — $ — $ — $ — Net actuarial gain (13) — (1) — — — — — Net amounts recognized in accumulated other comprehensive income $ (10) $ — $ (1) $ — $ — $ — $ — $ — (a) Included in Other within Other Noncurrent Assets on the Consolidated Balance Sheets. (b) Included in Other within Current Liabilities on the Consolidated Balance Sheets. (c) Included in Accrued pension and other post-retirement benefit costs on the Consolidated Balance Sheets.
Assumptions Used for Pension Benefits Accounting	The following tables present the assumptions used for other post-retirement benefits accounting. December 31, 2024 2023 2022 Benefit Obligations Discount rate 5.70 % 5.40 % 5.60 % Net Periodic Benefit Cost Discount rate 5.40 % 5.60 % 2.90 % Expected long-term rate of return on plan assets 6.50 % – 8.25 % 6.50 % – 8.25 % 6.50 %
Expected Benefit Payments	Expected Benefit Payments Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Years ending December 31, 2025 $ 52 $ 13 $ 18 $ 11 $ 8 $ 3 $ 4 $ 2 2026 45 11 16 10 7 3 3 2 2027 41 9 16 9 7 2 3 2 2028 38 8 15 9 6 2 3 2 2029 35 7 14 8 6 2 2 2 2030-2034 124 21 59 35 24 6 8 6
Assumed Health Care Cost Trend Rate	Assumed Health Care Cost Trend Rate December 31, 2024 2023 Health care cost trend rate assumed for next year – pre-65 trend 7.00 % 6.50 % Rate to which the cost trend is assumed to decline (the ultimate trend rate) 4.75 % 4.75 % Year that rate reaches ultimate trend 2034-2035 2031-2032

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	Components of Income Tax Expense Tax benefit from discontinued operations, in the following tables, includes income tax benefits related to the Commercial Renewables Disposal Groups. See Note 2 for further details. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current income taxes Federal $ (365) $ 178 $ 359 $ 373 $ 14 $ 52 $ 70 $ 40 State 31 75 34 40 (12) 3 12 (6) Foreign 2 — — — — — — — Total current income taxes (332) 253 393 413 2 55 82 34 Deferred income taxes Federal 858 10 (22) (215) 181 8 (19) 40 State 81 (25) 59 (6) 86 1 8 21 Total deferred income taxes (a) 939 (15) 37 (221) 267 9 (11) 61 ITC amortization (17) (12) (4) (3) (1) — — — Income tax expense from continuing operations 590 226 426 189 268 64 71 95 Tax benefit from discontinued operations (50) — — — — — — — Total income tax expense included in Consolidated Statements of Operations $ 540 $ 226 $ 426 $ 189 $ 268 $ 64 $ 71 $ 95 (a) Total deferred income taxes include the utilization of NOL carryforwards and tax credit carryforwards of $523 million at Duke Energy and $8 million at Duke Energy Indiana. In addition, total deferred income taxes include the generation of NOL carryforwards and tax credit carryforwards of $47 million at Duke Energy Carolinas, $85 million at Progress Energy, $66 million at Duke Energy Progress, $30 million at Duke Energy Florida, $26 million at Duke Energy Ohio, and $8 million at Piedmont. Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current income taxes Federal (b) $ 71 $ 173 $ 459 $ 198 $ 279 $ (46) $ 10 $ 44 State 1 22 38 4 71 (3) 9 3 Foreign 3 — — — — — — — Total current income taxes 75 195 497 202 350 (49) 19 47 Deferred income taxes Federal 319 (43) (154) (69) (89) 111 77 25 State 53 (7) 38 19 — 1 14 12 Total deferred income taxes (a) 372 (50) (116) (50) (89) 112 91 37 ITC amortization (9) (4) (4) (3) — — — — Income tax expense from continuing operations 438 141 377 149 261 63 110 84 Tax benefit from discontinued operations (359) — — — — — — — Total income tax expense included in Consolidated Statements of Operations $ 79 $ 141 $ 377 $ 149 $ 261 $ 63 $ 110 $ 84 (a) Total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $214 million at Duke Energy and $54 million at Duke Energy Indiana. In addition, total deferred income taxes includes the generation of NOL carryforwards and tax credit carryforwards of $2 million at Duke Energy Carolinas, $116 million at Progress Energy, $59 million at Duke Energy Progress, $5 million at Duke Energy Florida, $22 million at Duke Energy Ohio, and $15 million at Piedmont. (b) Total current federal income tax at Duke Energy includes corporate alternative minimum tax, net of tax credit utilization, of $69 million. In addition, under the IRA transferability provision, Progress Energy elected to sell $28 million of PTCs generated by Duke Energy Florida. Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Current income taxes Federal $ 1 $ (71) $ (13) $ 37 $ (37) $ (2) $ 38 $ 32 State (8) (13) (3) — (23) 1 2 2 Foreign 4 — — — — — — — Total current income taxes (3) (84) (16) 37 (60) (1) 40 34 Deferred income taxes Federal 328 230 310 118 201 (22) (63) 12 State (14) (16) 59 7 84 3 — (7) Total deferred income taxes (a) 314 214 369 125 285 (19) (63) 5 ITC amortization (11) (4) (5) (4) — (1) (1) — Income tax expense (benefit) from continuing operations 300 126 348 158 225 (21) (24) 39 Tax benefit from discontinued operations (503) — — — — — — — Total income tax (benefit) expense included in Consolidated Statements of Operations $ (203) $ 126 $ 348 $ 158 $ 225 $ (21) $ (24) $ 39 (a)
Schedule of Income before Income Tax, Domestic and Foreign	Duke Energy Income from Continuing Operations before Income Taxes Years Ended December 31, (in millions) 2024 2023 2022 Domestic $ 5,145 $ 4,700 $ 3,991 Foreign 49 67 87 Income from continuing operations before income taxes $ 5,194 $ 4,767 $ 4,078
Summary of Effective Tax Rates	The following tables present a reconciliation of income tax expense at the U.S. federal statutory tax rate to the actual tax expense from continuing operations. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Income tax expense, computed at the statutory rate of 21% $ 1,090 $ 443 $ 545 $ 284 $ 279 $ 85 $ 108 $ 107 State income tax, net of federal income tax effect 88 40 73 27 58 3 16 12 Amortization of EDIT (436) (225) (121) (98) (23) (23) (49) (18) AFUDC equity income (48) (24) (16) (13) (3) (1) (3) (4) AFUDC equity depreciation 38 19 14 7 7 2 4 — Production tax credits (46) — (46) — (46) — — — Other tax credits (43) (23) (16) (12) (4) (1) (2) (2) Other items, net (53) (4) (7) (6) — (1) (3) — Income tax expense from continuing operations $ 590 $ 226 $ 426 $ 189 $ 268 $ 64 $ 71 $ 95 Effective tax rate 11.4 % 10.7 % 16.4 % 14.0 % 20.2 % 15.8 % 13.9 % 18.7 % Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Income tax expense, computed at the statutory rate of 21% $ 1,001 $ 338 $ 490 $ 241 $ 268 $ 83 $ 128 $ 97 State income tax, net of federal income tax effect 43 12 60 18 56 (2) 18 12 Amortization of EDIT (388) (197) (114) (91) (23) (22) (33) (20) AFUDC equity income (41) (19) (14) (11) (3) (2) (2) (4) AFUDC equity depreciation 37 18 13 6 7 2 4 — Tax credits (b) (63) (11) (46) (7) (39) (2) (2) (1) Interest on company-owned life insurance (a) (114) — — — — — — — Other items, net (37) — (12) (7) (5) 6 (3) — Income tax expense from continuing operations $ 438 $ 141 $ 377 $ 149 $ 261 $ 63 $ 110 $ 84 Effective tax rate 9.2 % 8.8 % 16.2 % 13.0 % 20.4 % 15.9 % 18.1 % 18.1 % (a) During 2023, the Company evaluated the deductibility of certain items spanning periods currently open under federal statute, including items related to interest on company-owned life insurance. As a result of this analysis, the Company recorded a favorable federal adjustment of approximately $114 million and a favorable state adjustment of approximately $6 million. The favorable state adjustment is included in State income tax, net of federal income tax effect, in the above table. (b) Tax credits at Progress Energy and Duke Energy Florida include $28 million of certain eligible PTCs, net of discount, that were elected to be sold in 2023 under the transferability provisions of the IRA. Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Income tax expense, computed at the statutory rate of 21% $ 856 $ 362 $ 457 $ 245 $ 238 $ 59 $ 24 $ 76 State income tax, net of federal income tax effect (17) (23) 44 6 48 3 2 (4) Amortization of EDIT (481) (195) (133) (74) (59) (79) (48) (23) AFUDC equity income (41) (20) (14) (11) (3) (1) (2) (2) AFUDC equity depreciation 36 18 12 6 6 1 4 — Other tax credits (43) (12) (16) (9) (7) (2) (3) (8) Other items, net (10) (4) (2) (5) 2 (2) (1) — Income tax expense (benefit) from continuing operations $ 300 $ 126 $ 348 $ 158 $ 225 $ (21) $ (24) $ 39 Effective tax rate 7.4 % 7.3 % 16.0 % 13.6 % 19.8 % (7.5) % (21.2) % 10.8 %
Schedule of Deferred Tax Assets and Liabilities	December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Deferred credits and other liabilities $ 284 $ 217 $ 84 $ 43 $ 41 $ 17 $ 15 $ 40 Lease obligations 430 88 265 179 86 2 12 2 Pension, post-retirement and other employee benefits 89 (33) (23) (1) (26) 6 1 (2) Progress Energy merger purchase accounting adjustments (a) 227 — — — — — — — Tax credits and NOL carryforwards 3,845 522 783 312 449 70 145 57 Regulatory liabilities and deferred credits — — — — — — 10 — Other 35 11 5 3 2 4 — 8 Valuation allowance (517) — — — — — — — Total deferred income tax assets 4,393 805 1,114 536 552 99 183 105 Investments and other assets (2,114) (1,350) (724) (671) (69) — — (48) Accelerated depreciation rates (11,942) (3,203) (4,608) (1,624) (3,047) (1,361) (1,677) (1,019) Regulatory assets and deferred debits, net (1,761) (304) (1,045) (585) (460) (52) — (56) Total deferred income tax liabilities (15,817) (4,857) (6,377) (2,880) (3,576) (1,413) (1,677) (1,123) Net deferred income tax liabilities $ (11,424) $ (4,052) $ (5,263) $ (2,344) $ (3,024) $ (1,314) $ (1,494) $ (1,018) (a) Primarily related to lease obligations and debt fair value adjustments. December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Deferred credits and other liabilities $ 327 $ 194 $ 77 $ 21 $ 56 $ 13 $ 18 $ 42 Lease obligations 418 86 256 179 77 4 15 3 Pension, post-retirement and other employee benefits 65 (41) (22) (1) (25) 5 2 (5) Progress Energy merger purchase accounting adjustments (a) 260 — — — — — — — Tax credits and NOL carryforwards 4,489 445 686 230 425 44 154 50 Regulatory liabilities and deferred credits — — — — — — 47 — Investments and other assets — — — — — — 1 — Other 102 29 22 12 8 5 5 9 Valuation allowance (544) — — — — — — — Total deferred income tax assets 5,117 713 1,019 441 541 71 242 99 Investments and other assets (1,812) (1,213) (596) (520) (91) — — (37) Accelerated depreciation rates (11,969) (3,411) (4,557) (1,823) (2,778) (1,314) (1,678) (944) Regulatory assets and deferred debits, net (1,892) (468) (1,063) (658) (405) (29) — (51) Total deferred income tax liabilities (15,673) (5,092) (6,216) (3,001) (3,274) (1,343) (1,678) (1,032) Net deferred income tax liabilities $ (10,556) $ (4,379) $ (5,197) $ (2,560) $ (2,733) $ (1,272) $ (1,436) $ (933) (a) Primarily related to lease obligations and debt fair value adjustments.
Summary of Tax Credit Carryforwards	The following table presents the expiration of tax credits and NOL carryforwards. December 31, 2024 (in millions) Amount Expiration Year General Business Credits $ 2,186 2032 — 2044 Foreign Tax Credits (c) 615 2027 — 2028 State Carryforwards and Credits (a) 316 2025 — Indefinite Corporate AMT Credits 717 Indefinite Foreign NOL carryforwards (b) 11 2027 — 2042 Total tax credits and NOL carryforwards $ 3,845 (a) A valuation allowance of $102 million has been recorded on the state NOL and attribute carryforwards, as presented in the Net Deferred Income Tax Liability Components table. (b) A valuation allowance of $11 million has been recorded on the foreign NOL carryforwards, as presented in the Net Deferred Income Tax Liability Components table. (c) A valuation allowance of $404 million has been recorded on the foreign tax credits, as presented in the Net Deferred Income Tax Liability Components table. In 2024, the Company recorded a corporate alternative minimum tax liability, net of tax credit utilization, of $133 million. In addition, under the IRA transferability provision, the Company received net proceeds of $558 million related to the sale of certain tax credits generated by Duke Energy Carolinas, Duke Energy Progress and Duke Energy Florida.
Schedule of Unrecognized Tax Benefits Roll Forward	The following tables present changes to unrecognized tax benefits. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Unrecognized tax benefits – January 1 $ 62 $ 21 $ 24 $ 18 $ 6 $ 2 $ 3 $ 11 Gross increases – current period tax positions 12 4 5 4 1 — — 2 Unrecognized tax benefits – December 31 $ 74 $ 25 $ 29 $ 22 $ 7 $ 2 $ 3 $ 13 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Unrecognized tax benefits – January 1 $ 65 $ 17 $ 19 $ 13 $ 5 $ 1 $ 2 $ 9 Gross decreases – tax positions in prior periods (15) — — — — — — — Gross increases – current period tax positions 12 4 5 5 1 1 1 2 Total changes (3) 4 5 5 1 1 1 2 Unrecognized tax benefits – December 31 $ 62 $ 21 $ 24 $ 18 $ 6 $ 2 $ 3 $ 11 Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Unrecognized tax benefits – January 1 $ 51 $ 13 $ 15 $ 10 $ 4 $ 1 $ 2 $ 4 Gross increases – current period tax positions 14 4 4 3 1 — — 5 Total changes 14 4 4 3 1 — — 5 Unrecognized tax benefits – December 31 $ 65 $ 17 $ 19 $ 13 $ 5 $ 1 $ 2 $ 9
Summary of Income Tax Contingencies	The following table includes additional information regarding the Duke Energy Registrants' unrecognized tax benefits at December 31, 2024. None of Duke Energy Registrants anticipates a material increase or decrease in unrecognized tax benefits within the next 12 months. December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Amount that if recognized, would affect the effective tax rate or regulatory liability (a) $ 68 $ 24 $ 27 $ 20 $ 7 $ 2 $ 3 $ 11 (a) The Duke Energy Registrants are unable to estimate the specific amounts that would affect the ETR versus the regulatory liability.

Other Income and Expenses, Net

Other Income and Expenses, Net (Tables)	12 Months Ended
	Dec. 31, 2024
Other Income and Expenses [Abstract]
Schedule of Other Income and Expenses, Net	The components of Other income and expenses, net on the Consolidated Statements of Operations are as follows. Year Ended December 31, 2024 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Interest income $ 63 $ 9 $ 18 $ 14 $ 4 $ 8 $ 5 $ 19 AFUDC equity 233 113 74 61 13 7 19 21 Post-in-service equity returns 52 31 20 20 — 1 1 — Nonoperating income, other 313 94 123 48 69 3 37 14 Other income and expense, net $ 661 $ 247 $ 235 $ 143 $ 86 $ 19 $ 62 $ 54 Year Ended December 31, 2023 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Interest income $ 29 $ 10 $ 14 $ 9 $ 7 $ 25 $ 25 $ 19 AFUDC equity 198 91 67 52 15 9 10 21 Post-in-service equity returns 39 19 19 19 — 1 — — Nonoperating income, other 332 118 101 44 56 6 41 17 Other income and expense, net $ 598 $ 238 $ 201 $ 124 $ 78 $ 41 $ 76 $ 57 Year Ended December 31, 2022 Duke Duke Duke Duke Duke Duke Energy Progress Energy Energy Energy Energy (in millions) Energy Carolinas Energy Progress Florida Ohio Indiana Piedmont Interest income $ 27 $ 2 $ 24 $ 4 $ 20 $ 11 $ 15 $ 19 AFUDC equity 197 98 68 52 16 7 13 11 Post-in-service equity returns 34 14 18 18 — 1 1 — Nonoperating income, other 134 107 71 40 38 — 7 16 Other income and expense, net $ 392 $ 221 $ 181 $ 114 $ 74 $ 19 $ 36 $ 46

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Other Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Duke Energy Carolinas | Current Liabilities
Organization And Basis Of Presentation [Line Items]
Accrued compensation	$ 234	$ 224
Duke Energy Florida | Current Liabilities
Organization And Basis Of Presentation [Line Items]
Customer deposits/Collateral liabilities	164	168
Duke Energy Florida | Current Assets
Organization And Basis Of Presentation [Line Items]
Tax receivables	166	12
Duke Energy Ohio | Current Assets
Organization And Basis Of Presentation [Line Items]
Tax receivables	4	95
Duke Energy Indiana | Current Liabilities
Organization And Basis Of Presentation [Line Items]
Customer advances	$ 100	$ 87

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Schedule of Cash and Cash Equivalents) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 314	$ 253
Other	84	76
Other Noncurrent Assets
Other	20	16
Total cash, cash equivalents and restricted cash	418	345
Duke Energy Carolinas
Current Assets
Cash and cash equivalents	6	9
Other	9	9
Other Noncurrent Assets
Other	1	1
Total cash, cash equivalents and restricted cash	16	19
Progress Energy
Current Assets
Cash and cash equivalents	73	59
Other	76	67
Other Noncurrent Assets
Other	11	9
Total cash, cash equivalents and restricted cash	160	135
Duke Energy Progress
Current Assets
Cash and cash equivalents	24	18
Other	40	31
Other Noncurrent Assets
Other	5	2
Total cash, cash equivalents and restricted cash	69	51
Duke Energy Florida
Current Assets
Cash and cash equivalents	33	24
Other	35	36
Other Noncurrent Assets
Other	7	7
Total cash, cash equivalents and restricted cash	$ 75	$ 67

Summary of Significant Accoun_6

Summary of Significant Accounting Policies (Inventory) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Public Utilities, Inventory [Line Items]
Materials and supplies	$ 3,387	$ 3,086
Coal	801	842
Natural gas, oil and other	321	364
Total inventory	4,509	4,292
Duke Energy Carolinas
Public Utilities, Inventory [Line Items]
Materials and supplies	1,150	1,075
Coal	341	364
Natural gas, oil and other	45	45
Total inventory	1,536	1,484
Progress Energy
Public Utilities, Inventory [Line Items]
Materials and supplies	1,649	1,465
Coal	241	231
Natural gas, oil and other	196	205
Total inventory	2,086	1,901
Duke Energy Progress
Public Utilities, Inventory [Line Items]
Materials and supplies	1,074	963
Coal	164	154
Natural gas, oil and other	103	110
Total inventory	1,341	1,227
Duke Energy Florida
Public Utilities, Inventory [Line Items]
Materials and supplies	576	502
Coal	77	77
Natural gas, oil and other	92	95
Total inventory	745	674
Duke Energy Ohio
Public Utilities, Inventory [Line Items]
Materials and supplies	149	139
Coal	23	28
Natural gas, oil and other	11	12
Total inventory	183	179
Duke Energy Indiana
Public Utilities, Inventory [Line Items]
Materials and supplies	389	361
Coal	196	219
Natural gas, oil and other	1	2
Total inventory	586	582
Piedmont
Public Utilities, Inventory [Line Items]
Materials and supplies	11	12
Natural gas, oil and other	67	100
Total inventory	$ 78	$ 112

Summary of Significant Accoun_7

Summary of Significant Accounting Policies (Property, Plant and Equipment) (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Public Utility, Property, Plant and Equipment [Line Items]
Weighted-average depreciation rate (as a percent)	3%	2.90%	3%
Duke Energy Carolinas
Public Utility, Property, Plant and Equipment [Line Items]
Weighted-average depreciation rate (as a percent)	3.10%	2.70%	2.70%
Progress Energy
Public Utility, Property, Plant and Equipment [Line Items]
Weighted-average depreciation rate (as a percent)	3.30%	3.30%	3.20%
Duke Energy Progress
Public Utility, Property, Plant and Equipment [Line Items]
Weighted-average depreciation rate (as a percent)	3.20%	3.10%	3%
Duke Energy Florida
Public Utility, Property, Plant and Equipment [Line Items]
Weighted-average depreciation rate (as a percent)	3.50%	3.50%	3.50%
Duke Energy Ohio
Public Utility, Property, Plant and Equipment [Line Items]
Weighted-average depreciation rate (as a percent)	2.90%	2.80%	2.90%
Duke Energy Indiana
Public Utility, Property, Plant and Equipment [Line Items]
Weighted-average depreciation rate (as a percent)	3.60%	3.60%	3.60%
Piedmont
Public Utility, Property, Plant and Equipment [Line Items]
Weighted-average depreciation rate (as a percent)	2.20%	2.10%	2.10%

Summary of Significant Accoun_8

Summary of Significant Accounting Policies (Other Noncurrent Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Offsetting Assets [Line Items]
Other (including amounts related to VIEs)	$ 3,509	$ 3,964
Renewable Energy Program
Offsetting Assets [Line Items]
Other (including amounts related to VIEs)	$ 150	$ 150

Summary of Significant Accoun_9

Summary of Significant Accounting Policies (Accounts Payable and Supplier Invoices Sold) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Payables [Line Items]
Confirmed obligations outstanding at beginning of period	$ 50	$ 87
Invoices confirmed during the period	156	228
Confirmed invoices paid during the period	(193)	(265)
Confirmed obligations outstanding at end of period	13	50
Duke Energy Carolinas
Payables [Line Items]
Confirmed obligations outstanding at beginning of period	0	6
Invoices confirmed during the period	0	24
Confirmed invoices paid during the period	0	(30)
Confirmed obligations outstanding at end of period	0	0
Progress Energy
Payables [Line Items]
Confirmed obligations outstanding at beginning of period	3	19
Invoices confirmed during the period	4	58
Confirmed invoices paid during the period	(6)	(74)
Confirmed obligations outstanding at end of period	1	3
Duke Energy Progress
Payables [Line Items]
Confirmed obligations outstanding at beginning of period	0	8
Invoices confirmed during the period	0	22
Confirmed invoices paid during the period	0	(30)
Confirmed obligations outstanding at end of period	0	0
Duke Energy Florida
Payables [Line Items]
Confirmed obligations outstanding at beginning of period	3	11
Invoices confirmed during the period	4	36
Confirmed invoices paid during the period	(6)	(44)
Confirmed obligations outstanding at end of period	1	3
Duke Energy Ohio
Payables [Line Items]
Confirmed obligations outstanding at beginning of period	0	5
Invoices confirmed during the period	0	7
Confirmed invoices paid during the period	0	(12)
Confirmed obligations outstanding at end of period	0	0
Duke Energy Indiana
Payables [Line Items]
Invoices confirmed during the period		0
Confirmed invoices paid during the period		0
Piedmont
Payables [Line Items]
Confirmed obligations outstanding at beginning of period	47	57
Invoices confirmed during the period	152	139
Confirmed invoices paid during the period	(187)	(149)
Confirmed obligations outstanding at end of period	$ 12	$ 47

Summary of Significant Accou_10

Summary of Significant Accounting Policies (Excise Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Organization And Basis Of Presentation [Line Items]
Excise taxes	$ 423	$ 458	$ 449
Duke Energy Carolinas
Organization And Basis Of Presentation [Line Items]
Excise taxes	31	27	47
Progress Energy
Organization And Basis Of Presentation [Line Items]
Excise taxes	285	322	290
Duke Energy Progress
Organization And Basis Of Presentation [Line Items]
Excise taxes	9	5	25
Duke Energy Florida
Organization And Basis Of Presentation [Line Items]
Excise taxes	276	317	265
Duke Energy Ohio
Organization And Basis Of Presentation [Line Items]
Excise taxes	105	106	104
Duke Energy Indiana
Organization And Basis Of Presentation [Line Items]
Excise taxes	0	1	7
Piedmont
Organization And Basis Of Presentation [Line Items]
Excise taxes	$ 2	$ 2	$ 1

Dispositions (Duke Energy Disco

Dispositions (Duke Energy Discontinued Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) Income from discontinued operations, net of tax	$ 10	$ (1,455)	$ (1,323)
Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) Income from discontinued operations, net of tax	10	(1,455)	(1,323)
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) Income from discontinued operations, net of tax	12	(1,457)	(1,349)
Discontinued Operations, Held-for-sale | Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) Income from discontinued operations, net of tax	$ (2)	$ 2	$ 26

Dispositions (Narrative) (Detai

Dispositions (Narrative) (Details) $ in Millions			1 Months Ended	12 Months Ended
	Sep. 08, 2021 USD ($)	Jan. 28, 2021 USD ($) closing	Dec. 31, 2022 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 25, 2023 USD ($)
Duke Energy Indiana | Noncontrolling Interests
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage sold		19.90%
Number of closings | closing		2
Value of sale of parent interest	$ 1,030	$ 2,050	$ 1,030
Ownership interest sold (as a percentage)	11.05%		8.85%			8.85%
Proceed of purchase price for exchange in interest	50%
Transaction costs	$ 27		$ 6
Sale of noncontrolling interest	$ 545		$ 492
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncontrolling interest balance				$ 18	$ 66
Loss on disposal				(14)	(1,725)	$ (1,748)
Loss on disposal of PPE				123	278
Discontinued Operations, Disposed of by Sale | Brookfield Renewable Partners
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration to be received							$ 1,100
Discontinued Operations, Disposed of by Sale | Commercial Renewables Disposal Groups
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Closing period							18 months
Discontinued Operations, Disposed of by Sale | Commercial Renewables Disposal Groups | Accounts Receivable
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration to be received				$ 551
Discontinued Operations, Disposed of by Sale | Commercial Renewables Disposal Groups | Noncurrent assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration to be received					$ 531

Dispositions (Balance Sheet) (D

Dispositions (Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets Held for Sale
Total current assets held for sale	$ 4	$ 14
Noncurrent Assets Held for Sale
Total other noncurrent assets held for sale	89	197
Current Liabilities Associated with Assets Held for Sale
Total current liabilities associated with assets held for sale	80	122
Noncurrent Liabilities Associated with Assets Held for Sale
Total other noncurrent liabilities associated with assets held for sale	89	157
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups
Current Assets Held for Sale
Other	4	14
Total current assets held for sale	4	14
Noncurrent Assets Held for Sale
Cost	109	247
Accumulated depreciation and amortization	(24)	(57)
Net property, plant and equipment	85	190
Operating lease right-of-use assets, net	4	4
Other	0	3
Total other noncurrent assets held for sale	4	7
Total Assets Held for Sale	93	211
Current Liabilities Associated with Assets Held for Sale
Accounts payable	19	9
Taxes accrued	1	3
Current maturities of long-term debt	43	5
Unrealized losses on commodity hedges	13	68
Other	4	37
Total current liabilities associated with assets held for sale	80	122
Noncurrent Liabilities Associated with Assets Held for Sale
Long-Term debt	0	39
Operating lease liabilities	5	5
Asset retirement obligations	5	8
Unrealized losses on commodity hedges	66	94
Other	13	11
Total other noncurrent liabilities associated with assets held for sale	89	157
Total Liabilities Associated with Assets Held for Sale	$ 169	$ 279

Dispositions (Income Statement)

Dispositions (Income Statement) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax benefit	$ (50)	$ (359)	$ (503)
Income (Loss) from discontinued operations	10	(1,455)	(1,323)
Add: Net (income) loss attributable to noncontrolling interest included in discontinued operations	(3)	64	108
Net income (loss) from discontinued operations attributable to Duke Energy Corporation	7	(1,391)	(1,215)
Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (Loss) from discontinued operations	10	(1,455)	(1,323)
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating revenues	4	330	465
Operation, maintenance and other	22	302	337
Depreciation and amortization	0	0	201
Property and other taxes	2	45	36
Other income and expenses, net	0	(8)	2
Interest expense	4	65	10
Loss on disposal	14	1,725	1,748
Loss before income taxes	(38)	(1,815)	(1,865)
Income tax benefit	(50)	(358)	(516)
Income (Loss) from discontinued operations	12	(1,457)	(1,349)
Add: Net (income) loss attributable to noncontrolling interest included in discontinued operations	(3)	64	108
Net income (loss) from discontinued operations attributable to Duke Energy Corporation	$ 9	$ (1,393)	$ (1,241)

Dispositions (Cash Flow Stateme

Dispositions (Cash Flow Statement) (Details) - Commercial Renewables Disposal Groups - Discontinued Operations, Held-for-sale - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating activities	$ 7	$ 607	$ 213
Investing activities	$ (13)	$ 122	$ (802)

Business Segments (Business Seg

Business Segments (Business Segment Data) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	$ 30,357	$ 29,060	$ 28,768
Less:
Operation, maintenance and other	5,389	5,625	5,734
Depreciation and amortization	5,793	5,253	5,086
Property and other taxes	1,466	1,400	1,466
Impairment of assets and other charges	38	85	434
Interest expense	3,384	3,014	2,439
Income Tax Expense	590	438	300
Noncontrolling interests	(87)	(97)	(13)
Preferred dividends	106	106	106
Less: Preferred Redemption Costs	16	0	0
Equity in (losses) earnings of unconsolidated affiliates	(9)	113	113
Add: Other	687	650	414
Segment income (loss)	4,395	4,126	3,659
Net income (loss) from discontinued operations attributable to Duke Energy Corporation	7	(1,391)	(1,215)
Net Income available to Duke Energy common stockholders	4,402	2,735	2,444
Income (loss) attributable to noncontrolling interest	90	33	(95)
Net income	4,614	2,874	2,455
Capital expenditures	12,263	12,622	11,419
Segment assets	186,343	176,893	178,086
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes	5,194	4,767	4,078
Nonregulated electric and other	318	291	285
Regulated electric	(27,787)	(26,617)	(25,759)
Depreciation, amortization and accretion (including amortization of nuclear fuel)	6,419	6,084	5,843
Losses on sales of other assets	26	52	22
Fuel used in electric generation and purchased power
Less:
Cost of sales	9,206	9,086	8,782
Cost of natural gas
Less:
Cost of sales	565	593	1,276
Duke Energy Indiana
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	3,040	3,399	3,922
Less:
Cost of sales	964	1,217	1,819
Operation, maintenance and other	671	713	729
Depreciation and amortization	676	666	645
Property and other taxes	50	59	75
Impairment of assets and other charges	0	0	388
Interest expense	229	213	189
Income Tax Expense	71	110	(24)
Add: Other	62	76	36
Segment income (loss)	441	497	137
Net income	441	497	137
Capital expenditures	935	961	877
Segment assets	15,727	14,811	14,654
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes	512	607	113
Depreciation, amortization and accretion (including amortization of nuclear fuel)	679	669	648
Duke Energy Indiana | Fuel used in electric generation and purchased power
Less:
Cost of sales	964	1,217	1,819
Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	2,545	2,507	2,514
Less:
Operation, maintenance and other	485	478	523
Depreciation and amortization	403	367	324
Property and other taxes	400	364	369
Impairment of assets and other charges	0	3	(10)
Interest expense	192	169	129
Income Tax Expense	64	63	(21)
Add: Other	20	42	20
Segment income (loss)	341	334	302
Net income	341	334	302
Capital expenditures	815	939	850
Segment assets	12,768	12,216	11,506
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes	405	397	281
Regulated electric	(1,905)	(1,868)	(1,798)
Depreciation, amortization and accretion (including amortization of nuclear fuel)	408	371	328
Duke Energy Ohio | Fuel used in electric generation and purchased power
Less:
Cost of sales	538	608	657
Duke Energy Ohio | Cost of natural gas
Less:
Cost of sales	142	163	261
Duke Energy Carolinas
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	9,718	8,288	7,857
Less:
Cost of sales	3,251	2,524	2,015
Operation, maintenance and other	1,740	1,774	1,892
Depreciation and amortization	1,768	1,593	1,526
Property and other taxes	346	320	340
Impairment of assets and other charges	31	44	26
Interest expense	722	686	557
Income Tax Expense	226	141	126
Add: Other	249	264	225
Segment income (loss)	1,883	1,470	1,600
Net income	1,883	1,470	1,600
Capital expenditures	3,966	3,733	3,304
Segment assets	55,005	52,110	50,346
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes	2,109	1,611	1,726
Depreciation, amortization and accretion (including amortization of nuclear fuel)	2,033	1,845	1,787
Losses on sales of other assets	2	26	4
Duke Energy Carolinas | Fuel used in electric generation and purchased power
Less:
Cost of sales	3,251	2,524	2,015
Progress Energy
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	13,633	13,544	13,125
Less:
Cost of sales	4,755	5,026	5,078
Operation, maintenance and other	2,463	2,636	2,458
Depreciation and amortization	2,393	2,151	2,142
Property and other taxes	617	644	607
Impairment of assets and other charges	6	28	12
Interest expense	1,064	954	844
Income Tax Expense	426	377	348
Add: Other	262	228	192
Segment income (loss)	2,171	1,956	1,828
Net income	2,171	1,956	1,828
Capital expenditures	5,252	4,917	4,317
Segment assets	71,636	67,094	66,079
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes	2,597	2,333	2,176
Depreciation, amortization and accretion (including amortization of nuclear fuel)	2,761	2,721	2,405
Losses on sales of other assets	27	27	11
Progress Energy | Fuel used in electric generation and purchased power
Less:
Cost of sales	4,755	5,026	5,078
Duke Energy Progress
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	7,017	6,488	6,753
Less:
Cost of sales	2,409	2,203	2,492
Operation, maintenance and other	1,388	1,379	1,475
Depreciation and amortization	1,336	1,266	1,187
Property and other taxes	177	164	190
Impairment of assets and other charges	6	29	7
Interest expense	493	427	354
Income Tax Expense	189	149	158
Add: Other	145	127	118
Segment income (loss)	1,164	998	1,008
Net income	1,164	998	1,008
Capital expenditures	2,803	2,387	2,070
Segment assets	39,493	36,924	36,752
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes	1,353	1,147	1,166
Depreciation, amortization and accretion (including amortization of nuclear fuel)	1,520	1,460	1,371
Duke Energy Progress | Fuel used in electric generation and purchased power
Less:
Cost of sales	2,409	2,203	2,492
Duke Energy Florida
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	6,595	7,036	6,353
Less:
Cost of sales	2,346	2,823	2,586
Operation, maintenance and other	1,055	1,239	967
Depreciation and amortization	1,057	885	955
Property and other taxes	440	480	421
Impairment of assets and other charges	0	(1)	4
Interest expense	457	413	362
Income Tax Expense	268	261	225
Add: Other	89	80	76
Segment income (loss)	1,061	1,016	909
Net income	1,061	1,016	909
Capital expenditures	2,449	2,529	2,247
Segment assets	28,569	26,601	25,554
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes	1,329	1,277	1,134
Depreciation, amortization and accretion (including amortization of nuclear fuel)	1,239	1,260	1,032
Duke Energy Florida | Fuel used in electric generation and purchased power
Less:
Cost of sales	2,346	2,823	2,586
Piedmont
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	1,729	1,628	2,124
Less:
Cost of sales	423	430	1,015
Operation, maintenance and other	359	344	368
Depreciation and amortization	261	237	222
Property and other taxes	55	59	57
Impairment of assets and other charges	0	(4)	18
Interest expense	185	165	140
Income Tax Expense	95	84	39
Equity in (losses) earnings of unconsolidated affiliates	8	9	8
Add: Other	54	57	50
Segment income (loss)	413	379	323
Net income	413	379	323
Capital expenditures	1,025	1,036	862
Segment assets	11,799	11,067	10,335
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes	508	463	362
Nonregulated electric and other	27	25	24
Depreciation, amortization and accretion (including amortization of nuclear fuel)	264	239	225
Piedmont | Fuel used in electric generation and purchased power
Less:
Cost of sales	423	430	1,015
Other
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues			30
Other
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	38	37
Corporate And Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues			122
Less:
Capital expenditures			1,139
Segment assets			9,571
Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	(283)	(261)	(218)
Less:
Operation, maintenance and other	(195)	(175)	(129)
Depreciation and amortization	(28)	(28)	(27)
Property and other taxes	0	0	0
Impairment of assets and other charges	0	0	0
Interest expense	(123)	(150)	(86)
Income Tax Expense	0	0	0
Noncontrolling interests	0	0	0
Add: Other	(142)	(170)	(105)
Segment income (loss)			(1)
Eliminations | Fuel used in electric generation and purchased power
Less:
Cost of sales	(79)	(78)	(80)
Eliminations | Duke Energy Indiana
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	0	0	0
Less:
Operation, maintenance and other	5	18	10
Depreciation and amortization	0	0	0
Property and other taxes	0	0	0
Impairment of assets and other charges		1	1
Interest expense	1	0	0
Income Tax Expense	(1)	(5)	(4)
Add: Other	0	(1)	(2)
Segment income (loss)	(5)	(15)	(9)
Capital expenditures	0	0	0
Segment assets	1	(155)	(210)
Eliminations | Duke Energy Indiana | Fuel used in electric generation and purchased power
Less:
Cost of sales	0	0	0
Eliminations | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	0	0	0
Less:
Operation, maintenance and other	10	9	8
Depreciation and amortization	(1)	0	0
Property and other taxes	0	0	0
Impairment of assets and other charges		1	1
Interest expense	(2)	0	0
Income Tax Expense	(1)	(2)	(2)
Add: Other	0	(1)	(1)
Segment income (loss)	(6)	(9)	(8)
Capital expenditures	0	0	0
Segment assets	51	(108)	(162)
Eliminations | Duke Energy Ohio | Fuel used in electric generation and purchased power
Less:
Cost of sales	0	0	0
Eliminations | Duke Energy Ohio | Cost of natural gas
Less:
Cost of sales	0	0	0
Eliminations | Duke Energy Carolinas
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	0	0	0
Less:
Operation, maintenance and other	30	85	47
Depreciation and amortization	0	0	0
Property and other taxes	0	0	0
Impairment of assets and other charges	0	0	44
Interest expense	0	0	0
Income Tax Expense	(7)	(21)	(22)
Add: Other	(3)	(3)	(3)
Segment income (loss)	(26)	(67)	(72)
Capital expenditures	0	0	0
Segment assets	223	202	390
Eliminations | Duke Energy Carolinas | Fuel used in electric generation and purchased power
Less:
Cost of sales	0	0	0
Eliminations | Progress Energy
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	21	20	19
Less:
Operation, maintenance and other	50	82	63
Depreciation and amortization	0	0	0
Property and other taxes	0	0	(4)
Impairment of assets and other charges	0	0	7
Interest expense	115	114	128
Income Tax Expense	(39)	(49)	(48)
Add: Other	38	18	(13)
Segment income (loss)	(67)	(109)	(140)
Capital expenditures	0	0	0
Segment assets	3,685	3,912	3,896
Eliminations | Progress Energy | Fuel used in electric generation and purchased power
Less:
Cost of sales	0	0	0
Eliminations | Duke Energy Progress
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	0	0	0
Less:
Operation, maintenance and other	18	37	28
Depreciation and amortization	0	0	0
Property and other taxes	0	0	0
Impairment of assets and other charges	0	0	2
Interest expense	1	0	0
Income Tax Expense	(5)	(9)	(7)
Add: Other	7	(1)	(1)
Segment income (loss)	(7)	(29)	(24)
Capital expenditures	0	0	0
Segment assets	91	104	121
Eliminations | Duke Energy Progress | Fuel used in electric generation and purchased power
Less:
Cost of sales	0	0	0
Eliminations | Duke Energy Florida
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	0	0	0
Less:
Operation, maintenance and other	12	27	19
Depreciation and amortization	0	0	0
Property and other taxes	0	0	0
Impairment of assets and other charges		0	4
Interest expense	0	0	0
Income Tax Expense	(3)	(7)	(6)
Add: Other	3	(2)	(10)
Segment income (loss)	(6)	(22)	(27)
Capital expenditures	0	0	0
Segment assets	20	239	2
Eliminations | Duke Energy Florida | Fuel used in electric generation and purchased power
Less:
Cost of sales	0	0	0
Eliminations | Piedmont
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	0	0	0
Less:
Operation, maintenance and other	4	8	8
Depreciation and amortization	0	0	0
Property and other taxes	0	0	0
Impairment of assets and other charges		0	18
Interest expense	0	0	0
Income Tax Expense	1	0	(4)
Equity in (losses) earnings of unconsolidated affiliates	8	9	8
Add: Other	0	(2)	3
Segment income (loss)	3	(1)	(11)
Capital expenditures	0	0	0
Segment assets	92	89	92
Eliminations | Piedmont | Fuel used in electric generation and purchased power
Less:
Cost of sales	0	0	0
Total Reportable Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	30,319	29,023	28,738
Total Reportable Segments | Operating Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	30,483	29,187	28,864
Less:
Operation, maintenance and other	5,663	5,764	5,886
Depreciation and amortization	5,528	5,033	4,877
Property and other taxes	1,454	1,449	1,453
Impairment of assets and other charges	37	71	362
Interest expense	2,262	2,067	1,747
Income Tax Expense	919	858	544
Noncontrolling interests	(87)	(97)	(13)
Preferred dividends	0	0	0
Less: Preferred Redemption Costs	0
Equity in (losses) earnings of unconsolidated affiliates	(59)	47	27
Add: Other	600	604	526
Segment income (loss)	5,224	4,742	4,397
Capital expenditures	12,002	11,627	10,280
Segment assets	182,141	172,798	168,515
Total Reportable Segments | Operating Segments | Fuel used in electric generation and purchased power
Less:
Cost of sales	9,285	9,164	8,862
Total Reportable Segments | Operating Segments | Cost of natural gas
Less:
Cost of sales	565	593	1,276
Total Reportable Segments | Operating Segments | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	2,545	2,507	2,514
Less:
Operation, maintenance and other	475	469	515
Depreciation and amortization	404	367	324
Property and other taxes	400	364	369
Impairment of assets and other charges		2	(11)
Interest expense	194	169	129
Income Tax Expense	65	65	(19)
Add: Other	20	43	21
Segment income (loss)	347	343	310
Capital expenditures	815	939	850
Segment assets	12,717	12,324	11,668
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power
Less:
Cost of sales	538	608	657
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Cost of natural gas
Less:
Cost of sales	142	163	261
Total Reportable Segments | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	164	164	126
Electric Utilities and Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	28,020	26,846	25,990
Less:
Equity in (losses) earnings of unconsolidated affiliates	(11)	7	7
Electric Utilities and Infrastructure | Litigation | Duke Energy Carolinas
Less:
Impairment of assets and other charges	42	35
Electric Utilities and Infrastructure | Litigation | Duke Energy Progress
Less:
Impairment of assets and other charges		33
Electric Utilities and Infrastructure | Operating Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	28,093	26,921	26,024
Less:
Operation, maintenance and other	5,185	5,309	5,354
Depreciation and amortization	5,128	4,684	4,550
Property and other taxes	1,305	1,320	1,315
Impairment of assets and other charges	37	75	374
Interest expense	2,006	1,850	1,565
Income Tax Expense	820	742	536
Noncontrolling interests	(88)	(99)	(13)
Equity in (losses) earnings of unconsolidated affiliates	(11)	7	7
Add: Other	542	538	467
Segment income (loss)	4,770	4,223	3,929
Capital expenditures	10,689	10,135	8,985
Segment assets	164,010	155,449	152,104
Electric Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power
Less:
Cost of sales	9,285	9,164	8,862
Electric Utilities and Infrastructure | Operating Segments | Cost of natural gas
Less:
Cost of sales	0	0	0
Electric Utilities and Infrastructure | Operating Segments | Regulated and Unregulated Operating Revenue
Less:
Segment income (loss)	17
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	3,040	3,399	3,922
Less:
Operation, maintenance and other	666	695	719
Depreciation and amortization	676	666	645
Property and other taxes	50	59	75
Impairment of assets and other charges		(1)	387
Interest expense	228	213	189
Income Tax Expense	72	115	(20)
Equity in (losses) earnings of unconsolidated affiliates	15
Add: Other	62	77	38
Segment income (loss)	446	512	146
Income (loss) attributable to noncontrolling interest	4		34
Capital expenditures	935	961	877
Segment assets	15,726	14,966	14,864
Segment Reporting Information Assets [Abstract]
Regulated electric			46
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana | Fuel used in electric generation and purchased power
Less:
Cost of sales	964	1,217	1,819
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana | Nonoperating Income (Expense)
Less:
Equity in (losses) earnings of unconsolidated affiliates	4
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana | Regulated and Unregulated Operating Revenue
Less:
Segment income (loss)	29
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	1,905	1,868	1,798
Less:
Operation, maintenance and other	366	351	345
Depreciation and amortization	273	257	221
Property and other taxes	306	294	288
Impairment of assets and other charges		2	1
Interest expense	126	116	86
Income Tax Expense	47	42	24
Add: Other	15	29	13
Segment income (loss)	264	227	189
Capital expenditures	535	520	488
Segment assets	8,211	7,978	7,504
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power
Less:
Cost of sales	538	608	657
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Cost of natural gas
Less:
Cost of sales	0	0	0
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	9,718	8,288	7,857
Less:
Operation, maintenance and other	1,710	1,689	1,845
Depreciation and amortization	1,768	1,593	1,526
Property and other taxes	346	320	340
Impairment of assets and other charges	31	44	(18)
Interest expense	722	686	557
Income Tax Expense	233	162	148
Add: Other	252	267	228
Segment income (loss)	1,909	1,537	1,672
Capital expenditures	3,966	3,733	3,304
Segment assets	54,782	51,908	49,956
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Fuel used in electric generation and purchased power
Less:
Cost of sales	3,251	2,524	2,015
Electric Utilities and Infrastructure | Operating Segments | Progress Energy
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	13,612	13,524	13,106
Less:
Operation, maintenance and other	2,413	2,554	2,395
Depreciation and amortization	2,393	2,151	2,142
Property and other taxes	617	644	611
Impairment of assets and other charges	6	28	5
Interest expense	949	840	716
Income Tax Expense	465	426	396
Add: Other	224	210	205
Segment income (loss)	2,238	2,065	1,968
Capital expenditures	5,252	4,917	4,317
Segment assets	67,951	63,182	62,183
Electric Utilities and Infrastructure | Operating Segments | Progress Energy | Fuel used in electric generation and purchased power
Less:
Cost of sales	4,755	5,026	5,078
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	7,017	6,488	6,753
Less:
Operation, maintenance and other	1,370	1,342	1,447
Depreciation and amortization	1,336	1,266	1,187
Property and other taxes	177	164	190
Impairment of assets and other charges	6	29	5
Interest expense	492	427	354
Income Tax Expense	194	158	165
Add: Other	138	128	119
Segment income (loss)	1,171	1,027	1,032
Capital expenditures	2,803	2,387	2,070
Segment assets	39,402	36,820	36,631
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Fuel used in electric generation and purchased power
Less:
Cost of sales	2,409	2,203	2,492
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	6,595	7,036	6,353
Less:
Operation, maintenance and other	1,043	1,212	948
Depreciation and amortization	1,057	885	955
Property and other taxes	440	480	421
Impairment of assets and other charges		(1)	0
Interest expense	457	413	362
Income Tax Expense	271	268	231
Add: Other	86	82	86
Segment income (loss)	1,067	1,038	936
Capital expenditures	2,449	2,529	2,247
Segment assets	28,549	26,362	25,552
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida | Fuel used in electric generation and purchased power
Less:
Cost of sales	2,346	2,823	2,586
Electric Utilities and Infrastructure | Operating Segments | Litigation | Nonoperating Income (Expense)
Less:
Segment income (loss)	(11)
Electric Utilities and Infrastructure | Operating Segments | Litigation | Duke Energy Indiana
Less:
Impairment of assets and other charges			386
Electric Utilities and Infrastructure | Operating Segments | Litigation | Duke Energy Carolinas | Operation, Maintenance and Other
Less:
Operation, maintenance and other	2
Add: Other	8
Electric Utilities and Infrastructure | Operating Segments | Litigation | Duke Energy Progress | Operation, Maintenance and Other
Less:
Add: Other		8
Electric Utilities and Infrastructure | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	73	75	34
Gas Utilities and Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	2,299	2,177	2,748
Less:
Equity in (losses) earnings of unconsolidated affiliates	(48)	40	21
Gas Utilities and Infrastructure | Customer Billing Adjustments
Less:
Operation, maintenance and other	1
Add: Other	3
Gas Utilities and Infrastructure | Impairments For Certain Renewable Natural Gas Investments
Less:
Equity in (losses) earnings of unconsolidated affiliates	54
Gas Utilities and Infrastructure | Operating Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	2,390	2,266	2,840
Less:
Operation, maintenance and other	478	455	532
Depreciation and amortization	400	349	327
Property and other taxes	149	129	138
Impairment of assets and other charges	0	(4)	(12)
Interest expense	256	217	182
Income Tax Expense	99	116	8
Noncontrolling interests	1	2	0
Equity in (losses) earnings of unconsolidated affiliates	(48)	40	20
Add: Other	58	66	59
Segment income (loss)	454	519	468
Capital expenditures	1,313	1,492	1,295
Segment assets	18,131	17,349	16,411
Gas Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power
Less:
Cost of sales	0	0	0
Gas Utilities and Infrastructure | Operating Segments | Cost of natural gas
Less:
Cost of sales	565	593	1,276
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	640	639	716
Less:
Operation, maintenance and other	109	118	170
Depreciation and amortization	131	110	103
Property and other taxes	94	70	81
Impairment of assets and other charges		0	(12)
Interest expense	68	53	43
Income Tax Expense	18	23	(43)
Add: Other	5	14	8
Segment income (loss)	83	116	121
Capital expenditures	280	419	362
Segment assets	4,506	4,346	4,164
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power
Less:
Cost of sales	0	0	0
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Cost of natural gas
Less:
Cost of sales	142	163	261
Gas Utilities and Infrastructure | Operating Segments | Piedmont
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	1,729	1,628	2,124
Less:
Operation, maintenance and other	355	336	360
Depreciation and amortization	261	237	222
Property and other taxes	55	59	57
Impairment of assets and other charges		(4)	0
Interest expense	185	165	140
Income Tax Expense	94	84	43
Equity in (losses) earnings of unconsolidated affiliates	0	0	0
Add: Other	54	59	47
Segment income (loss)	410	380	334
Capital expenditures	1,025	1,036	862
Segment assets	11,707	10,978	10,243
Gas Utilities and Infrastructure | Operating Segments | Piedmont | Fuel used in electric generation and purchased power
Less:
Cost of sales	423	430	1,015
Gas Utilities and Infrastructure | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	91	89	92
Other
Less:
Operation, maintenance and other			71
Impairment of assets and other charges		14
Less: Preferred Redemption Costs	16
Other | Operation, Maintenance and Other
Less:
Add: Other		110
Other | Business Transformation
Segment Reporting Information Assets [Abstract]
Losses on sales of other assets			7
Other | Litigation
Less:
Operation, maintenance and other			25
Other | Hurricane Helene
Less:
Operation, maintenance and other	23
Other | Operating Segments
Less:
Impairment of assets and other charges			72
Other | Other
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	157	134
Other | Corporate And Eliminations
Less:
Operation, maintenance and other	(79)	36	(23)
Depreciation and amortization	293	248	236
Property and other taxes	12	(49)	13
Impairment of assets and other charges	1	14	72
Interest expense	1,245	1,097	778
Income Tax Expense	(329)	(420)	(244)
Noncontrolling interests	0	0	0
Preferred dividends	106	106	106
Less: Preferred Redemption Costs	16
Equity in (losses) earnings of unconsolidated affiliates	50	66	86
Add: Other	229	216	(7)
Segment income (loss)	(829)	(616)	(737)
Capital expenditures	261	995
Segment assets	4,202	4,095
Other | Corporate And Eliminations | Fuel used in electric generation and purchased power
Less:
Cost of sales	0	0	0
Other | Corporate And Eliminations | Cost of natural gas
Less:
Cost of sales	0	0	0
Other | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	$ 119	$ 97	$ 92

Business Segments (Narrative) (

Business Segments (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) reportable_segment segment Segment	Dec. 31, 2023 USD ($) asset	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	2
Operating Revenues	$ 30,357	$ 29,060	$ 28,768
Duke Energy Progress
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 7,017	6,488	6,753
Duke Energy Carolinas
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 9,718	8,288	7,857
Progress Energy
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 13,633	13,544	13,125
Duke Energy Florida
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 6,595	7,036	6,353
Duke Energy Ohio
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2
Operating Revenues	$ 2,545	$ 2,507	2,514
Duke Energy Indiana
Segment Reporting Information [Line Items]
Number of reportable segments | asset		1
Operating Revenues	$ 3,040	$ 3,399	3,922
Piedmont
Segment Reporting Information [Line Items]
Number of reportable segments | reportable_segment	1
Operating Revenues	$ 1,729	$ 1,628	$ 2,124

Business Segments (Schedule of

Business Segments (Schedule of Revenue, By Products and Services) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Operating Revenues	$ 30,357	$ 29,060	$ 28,768
Total Reportable Segments
Segment Reporting Information [Line Items]
Operating Revenues	30,319	29,023	28,738
Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	28,020	26,846	25,990
Gas Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	2,299	2,177	2,748
Operating Segments | Total Reportable Segments
Segment Reporting Information [Line Items]
Operating Revenues	30,483	29,187	28,864
Operating Segments | Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	28,093	26,921	26,024
Operating Segments | Gas Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	2,390	2,266	2,840
Operating Segments | Retail Electric
Segment Reporting Information [Line Items]
Operating Revenues	24,593	23,484	22,036
Operating Segments | Retail Electric | Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	24,593	23,484	22,036
Operating Segments | Wholesale Electric
Segment Reporting Information [Line Items]
Operating Revenues	2,219	2,193	2,882
Operating Segments | Wholesale Electric | Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	2,219	2,193	2,882
Operating Segments | Retail Natural Gas
Segment Reporting Information [Line Items]
Operating Revenues	2,320	2,199	2,535
Operating Segments | Retail Natural Gas | Gas Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	2,320	2,199	2,535
Operating Segments | Other
Segment Reporting Information [Line Items]
Operating Revenues	1,351	1,311	1,411
Operating Segments | Other | Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	1,281	1,244	1,106
Operating Segments | Other | Gas Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	$ 70	$ 67	$ 305

Regulatory Matters (Schedule of

Regulatory Matters (Schedule of Regulatory Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	$ 17,010	$ 17,266
Less: Current portion	2,756	3,648
Total noncurrent regulatory assets	14,254	13,618
Total regulatory liabilities	16,119	15,408
Less: Current portion	1,425	1,369
Total noncurrent regulatory liabilities	14,694	14,039
Net regulatory liability related to income taxes
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	5,397	5,901
COR regulatory liability
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	5,436	5,497
AROs – nuclear and other
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	2,289	1,673
Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	583	443
Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	232	266
Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	223	137
DSM/EE
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	58	89
DOE Settlement
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities		32
Other
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	984	1,133
Renewable energy credits
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	241	237
Deferred Nuclear PTC
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	676
AROs – coal ash
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	3,384	3,214
AROs – nuclear and other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	952	1,179
Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	588	2,486
Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	2,524	2,389
Storm cost securitized balance, net
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	1,023	890
Nuclear asset securitized balance, net
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	771	830
Debt fair value adjustment
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	719	774
Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	352	749
Storm cost deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	1,951	407
COR regulatory asset
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	646	371
PISCC and deferred operating expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	331	357
Retired generation facilities
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	281	275
Deferred asset – Lee and Harris COLA
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	215	252
Customer connect project
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	257	260
Advanced metering infrastructure (AMI)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	204	243
Incremental COVID-19 expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	231	237
Vacation accrual
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	228	228
Grid Deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	255	210
Demand side management (DSM) / Energy efficiency (EE)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	199	201
CEP deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	195	193
NCEMPA deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	179	172
Derivatives – natural gas supply contracts
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	94	147
Deferred pipeline integrity costs
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	129	133
Nuclear deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	134	131
COR settlement
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	110	115
Decoupling
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	162	115
Deferred coal ash handling system costs
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	77	86
Coal plant securitization
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	102	8
Qualifying facility contract buyouts
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	62	68
Network Integration Transmission Services deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	31	31
Transmission expansion obligation
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	31	30
East Bend deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	24	28
Propane caverns
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	24	26
Tennessee ARM Deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	33	20
Other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	512	411
Progress Energy
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	8,265	8,091
Less: Current portion	1,647	1,661
Total noncurrent regulatory assets	6,618	6,430
Total regulatory liabilities	5,780	5,501
Less: Current portion	522	418
Total noncurrent regulatory liabilities	5,258	5,083
Progress Energy | Net regulatory liability related to income taxes
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	1,884	2,008
Progress Energy | COR regulatory liability
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	2,984	2,805
Progress Energy | Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	281	208
Progress Energy | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	12
Progress Energy | Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	94	14
Progress Energy | DOE Settlement
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities		32
Progress Energy | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	291	296
Progress Energy | Renewable energy credits
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	139	138
Progress Energy | Deferred Nuclear PTC
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	95
Progress Energy | AROs – coal ash
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	1,335	1,230
Progress Energy | AROs – nuclear and other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	905	1,127
Progress Energy | Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	282	1,173
Progress Energy | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	828	757
Progress Energy | Storm cost securitized balance, net
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	822	682
Progress Energy | Nuclear asset securitized balance, net
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	771	830
Progress Energy | Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	126	323
Progress Energy | Storm cost deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	1,238	298
Progress Energy | COR regulatory asset
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	571	337
Progress Energy | PISCC and deferred operating expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	37	42
Progress Energy | Retired generation facilities
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	202	220
Progress Energy | Deferred asset – Lee and Harris COLA
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	10	15
Progress Energy | Customer connect project
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	116	125
Progress Energy | Advanced metering infrastructure (AMI)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	70	92
Progress Energy | Incremental COVID-19 expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	89	80
Progress Energy | Vacation accrual
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	43	43
Progress Energy | Grid Deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	54	51
Progress Energy | Demand side management (DSM) / Energy efficiency (EE)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	199	191
Progress Energy | NCEMPA deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	179	172
Progress Energy | Nuclear deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	53	42
Progress Energy | COR settlement
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	29	30
Progress Energy | Decoupling
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	32	15
Progress Energy | Deferred coal ash handling system costs
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	17	21
Progress Energy | Coal plant securitization
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	39	8
Progress Energy | Qualifying facility contract buyouts
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	62	68
Progress Energy | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	156	119
Duke Energy Carolinas
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	4,884	5,480
Less: Current portion	685	1,564
Total noncurrent regulatory assets	4,199	3,916
Total regulatory liabilities	7,210	6,577
Less: Current portion	618	587
Total noncurrent regulatory liabilities	6,592	5,990
Duke Energy Carolinas | Net regulatory liability related to income taxes
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	1,951	2,200
Duke Energy Carolinas | COR regulatory liability
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	1,479	1,641
Duke Energy Carolinas | AROs – nuclear and other
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	2,289	1,673
Duke Energy Carolinas | Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	199	158
Duke Energy Carolinas | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	35	106
Duke Energy Carolinas | Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	108	85
Duke Energy Carolinas | DSM/EE
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	53	87
Duke Energy Carolinas | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	413	528
Duke Energy Carolinas | Renewable energy credits
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	102	99
Duke Energy Carolinas | Deferred Nuclear PTC
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	581
Duke Energy Carolinas | AROs – coal ash
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	1,481	1,559
Duke Energy Carolinas | Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	298	1,293
Duke Energy Carolinas | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	668	671
Duke Energy Carolinas | Storm cost securitized balance, net
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	201	208
Duke Energy Carolinas | Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	202	405
Duke Energy Carolinas | Storm cost deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	691	97
Duke Energy Carolinas | PISCC and deferred operating expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	42	48
Duke Energy Carolinas | Retired generation facilities
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	54	26
Duke Energy Carolinas | Deferred asset – Lee and Harris COLA
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	205	237
Duke Energy Carolinas | Customer connect project
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	54	58
Duke Energy Carolinas | Advanced metering infrastructure (AMI)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	114	125
Duke Energy Carolinas | Incremental COVID-19 expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	137	152
Duke Energy Carolinas | Vacation accrual
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	86	87
Duke Energy Carolinas | Grid Deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	201	159
Duke Energy Carolinas | Nuclear deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	81	89
Duke Energy Carolinas | COR settlement
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	81	85
Duke Energy Carolinas | Decoupling
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	24
Duke Energy Carolinas | Deferred coal ash handling system costs
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	60	65
Duke Energy Carolinas | Coal plant securitization
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	63
Duke Energy Carolinas | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	141	116
Duke Energy Progress
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	5,181	5,488
Less: Current portion	626	942
Total noncurrent regulatory assets	4,555	4,546
Total regulatory liabilities	4,918	4,675
Less: Current portion	348	300
Total noncurrent regulatory liabilities	4,570	4,375
Duke Energy Progress | Net regulatory liability related to income taxes
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	1,320	1,420
Duke Energy Progress | COR regulatory liability
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	2,984	2,805
Duke Energy Progress | Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	151	87
Duke Energy Progress | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	12
Duke Energy Progress | Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	10	14
Duke Energy Progress | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	207	211
Duke Energy Progress | Renewable energy credits
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	139	138
Duke Energy Progress | Deferred Nuclear PTC
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	95
Duke Energy Progress | AROs – coal ash
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	1,322	1,218
Duke Energy Progress | AROs – nuclear and other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	900	1,110
Duke Energy Progress | Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	277	579
Duke Energy Progress | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	439	408
Duke Energy Progress | Storm cost securitized balance, net
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	822	682
Duke Energy Progress | Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	85	260
Duke Energy Progress | Storm cost deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	276	228
Duke Energy Progress | PISCC and deferred operating expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	37	42
Duke Energy Progress | Retired generation facilities
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	108	126
Duke Energy Progress | Deferred asset – Lee and Harris COLA
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	10	15
Duke Energy Progress | Customer connect project
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	45	49
Duke Energy Progress | Advanced metering infrastructure (AMI)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	54	68
Duke Energy Progress | Incremental COVID-19 expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	89	80
Duke Energy Progress | Vacation accrual
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	43	43
Duke Energy Progress | Grid Deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	54	51
Duke Energy Progress | Demand side management (DSM) / Energy efficiency (EE)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	188	182
Duke Energy Progress | NCEMPA deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	179	172
Duke Energy Progress | Nuclear deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	53	42
Duke Energy Progress | COR settlement
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	29	30
Duke Energy Progress | Decoupling
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	32	15
Duke Energy Progress | Deferred coal ash handling system costs
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	17	21
Duke Energy Progress | Coal plant securitization
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	39	8
Duke Energy Progress | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	83	59
Duke Energy Florida
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	3,086	2,603
Less: Current portion	1,022	720
Total noncurrent regulatory assets	2,064	1,883
Total regulatory liabilities	862	826
Less: Current portion	174	118
Total noncurrent regulatory liabilities	688	708
Duke Energy Florida | Net regulatory liability related to income taxes
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	564	588
Duke Energy Florida | Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	130	121
Duke Energy Florida | DOE Settlement
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	84	32
Duke Energy Florida | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	84	85
Duke Energy Florida | AROs – coal ash
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	13	12
Duke Energy Florida | AROs – nuclear and other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	5	17
Duke Energy Florida | Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	5	594
Duke Energy Florida | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	389	349
Duke Energy Florida | Nuclear asset securitized balance, net
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	771	830
Duke Energy Florida | Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	41	63
Duke Energy Florida | Storm cost deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	962	70
Duke Energy Florida | COR regulatory asset
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	571	337
Duke Energy Florida | Retired generation facilities
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	94	94
Duke Energy Florida | Customer connect project
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	71	76
Duke Energy Florida | Advanced metering infrastructure (AMI)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	16	24
Duke Energy Florida | Qualifying facility contract buyouts
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	62	68
Duke Energy Florida | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	86	69
Duke Energy Ohio
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	793	749
Less: Current portion	88	73
Total noncurrent regulatory assets	705	676
Total regulatory liabilities	499	553
Less: Current portion	34	56
Total noncurrent regulatory liabilities	465	497
Duke Energy Ohio | Net regulatory liability related to income taxes
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	432	466
Duke Energy Ohio | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	14	17
Duke Energy Ohio | Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities		15
Duke Energy Ohio | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	53	55
Duke Energy Ohio | AROs – coal ash
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	14	17
Duke Energy Ohio | Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	8	20
Duke Energy Ohio | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	131	123
Duke Energy Ohio | Storm cost deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	5	12
Duke Energy Ohio | COR regulatory asset
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	75	34
Duke Energy Ohio | PISCC and deferred operating expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	15	15
Duke Energy Ohio | Customer connect project
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	44	49
Duke Energy Ohio | Advanced metering infrastructure (AMI)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	8	13
Duke Energy Ohio | Incremental COVID-19 expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets		25
Duke Energy Ohio | CEP deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	195	193
Duke Energy Ohio | Deferred pipeline integrity costs
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	28	30
Duke Energy Ohio | Deferred coal ash handling system costs
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	29
Duke Energy Ohio | Network Integration Transmission Services deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	31	31
Duke Energy Ohio | Transmission expansion obligation
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	31	30
Duke Energy Ohio | East Bend deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	24	28
Duke Energy Ohio | Propane caverns
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	24	26
Duke Energy Ohio | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	131	103
Duke Energy Indiana
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	1,153	996
Less: Current portion	113	102
Total noncurrent regulatory assets	1,040	894
Total regulatory liabilities	1,587	1,668
Less: Current portion	183	209
Total noncurrent regulatory liabilities	1,404	1,459
Duke Energy Indiana | Net regulatory liability related to income taxes
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	725	794
Duke Energy Indiana | COR regulatory liability
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	434	496
Duke Energy Indiana | Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	103	77
Duke Energy Indiana | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	139	109
Duke Energy Indiana | Deferred fuel and purchased power
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	21	23
Duke Energy Indiana | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	165	169
Duke Energy Indiana | AROs – coal ash
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	554	408
Duke Energy Indiana | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	212	208
Duke Energy Indiana | Hedge costs deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	23	19
Duke Energy Indiana | Storm cost deferrals
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	17	11
Duke Energy Indiana | PISCC and deferred operating expenses
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	237	241
Duke Energy Indiana | Retired generation facilities
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	25	29
Duke Energy Indiana | Customer connect project
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	19	19
Duke Energy Indiana | Advanced metering infrastructure (AMI)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	12	13
Duke Energy Indiana | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	54	48
Piedmont
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	579	571
Less: Current portion	158	161
Total noncurrent regulatory assets	421	410
Total regulatory liabilities	1,024	1,086
Less: Current portion	68	98
Total noncurrent regulatory liabilities	956	988
Piedmont | Net regulatory liability related to income taxes
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	405	433
Piedmont | COR regulatory liability
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	539	555
Piedmont | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory liabilities	80	98
Piedmont | AROs – nuclear and other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	29	26
Piedmont | Accrued pension and OPEB
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	144	129
Piedmont | Vacation accrual
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	14	13
Piedmont | Demand side management (DSM) / Energy efficiency (EE)
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	24	9
Piedmont | Derivatives – natural gas supply contracts
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	94	147
Piedmont | Deferred pipeline integrity costs
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	101	103
Piedmont | Decoupling
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	77	75
Piedmont | Tennessee ARM Deferral
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	33	20
Piedmont | Other
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	49	$ 49
Piedmont | Pipeline Integrity Management – Transmission/Distribution
Regulatory Assets Liabilities [Line Items]
Total regulatory assets	$ 14

Regulatory Matters (Duke Energy

Regulatory Matters (Duke Energy Narrative) (Details) - USD ($) $ in Millions			12 Months Ended
	Jun. 07, 2021	Jun. 06, 2021	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Public Utilities, General Disclosures [Line Items]
Capital expenditures				$ 12,263	$ 12,622	$ 11,419
Operation, maintenance and other				5,389	5,625	5,734
Regulatory assets				17,010	17,266
Other Noncurrent Assets: Regulatory assets				$ 14,254	13,618
Nuclear Regulatory Commission
Public Utilities, General Disclosures [Line Items]
Operating license extension (in years)				20 years
Hurricanes Helene, Debby and Milton
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs				$ 2,600
Hurricanes Helene, Debby and Milton | Forecast
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs			$ 200
Hurricanes Helene, Debby and Milton | Minimum
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs				$ 2,800
Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Limit of total capital (as a percent)				30%
Capital expenditures				$ 815	939	850
Operation, maintenance and other				485	478	523
Regulatory assets				793	749
Other Noncurrent Assets: Regulatory assets				$ 705	676
Duke Energy Kentucky
Public Utilities, General Disclosures [Line Items]
Required minimum equity capital structure (as a percent)				35%
Duke Energy Carolinas and Duke Energy Progress | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets				$ 802	87
Duke Energy Carolinas and Duke Energy Progress | Natural Disasters and Other Casualty Events | Minimum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred				95
Capital expenditures				8
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Helene, Debby and Milton | Minimum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred				860
Capital expenditures				548
Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Capital expenditures				3,966	3,733	3,304
Operation, maintenance and other				1,740	1,774	1,892
Regulatory assets				4,884	5,480
Other Noncurrent Assets: Regulatory assets				4,199	3,916
Duke Energy Carolinas | Oconee Nuclear Station Subsequent License Renewal | Nuclear Regulatory Commission | Oconee
Public Utilities, General Disclosures [Line Items]
Operating license extension (in years)	20 years
Operating license (in years)	80 years	60 years
Duke Energy Carolinas | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets				34	32
Duke Energy Carolinas | Natural Disasters and Other Casualty Events | Hurricanes Helene, Debby and Milton | NCUC
Public Utilities, General Disclosures [Line Items]
Storm reserves				200
Duke Energy Carolinas | Natural Disasters and Other Casualty Events | Minimum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred				612
Capital expenditures				402
Duke Energy Carolinas | Hurricanes Helene, Debby and Milton
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets				583
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Capital expenditures				2,803	2,387	2,070
Operation, maintenance and other				1,388	1,379	$ 1,475
Regulatory assets				5,181	5,488
Other Noncurrent Assets: Regulatory assets				4,555	4,546
Duke Energy Progress | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets				47	$ 55
Duke Energy Progress | Natural Disasters and Other Casualty Events | Hurricanes Helene, Debby and Milton | NCUC
Public Utilities, General Disclosures [Line Items]
Storm reserves				100
Duke Energy Progress | Natural Disasters and Other Casualty Events | Minimum
Public Utilities, General Disclosures [Line Items]
Storm costs incurred				248
Capital expenditures				146
Duke Energy Progress | Hurricanes Helene, Debby and Milton
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets				$ 219

Regulatory Matters (Duke Ener_2

Regulatory Matters (Duke Energy Carolinas Narrative) (Details) $ in Millions							12 Months Ended
	Jul. 03, 2024 USD ($)	May 17, 2024 USD ($)	Mar. 14, 2024 USD ($) numberOfCombustionTurbines MW	Jan. 04, 2024	Dec. 15, 2023	Aug. 22, 2023 USD ($)	Dec. 14, 2027 USD ($)	Dec. 14, 2026 USD ($)	Dec. 14, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 14, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges										$ 38		$ 85	$ 434
Operation, maintenance and other										5,389		5,625	5,734
Capital expenditures										12,263		12,622	11,419
Other Noncurrent Assets: Regulatory assets										14,254		13,618
Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges										31		44	26
Operation, maintenance and other										1,740		1,774	1,892
Capital expenditures										3,966		3,733	3,304
Other Noncurrent Assets: Regulatory assets										4,199		3,916
Duke Energy Carolinas | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets										34		32
Duke Energy Carolinas | Hurricanes Helene, Debby and Milton
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets										583
Duke Energy Carolinas | Minimum | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Storm costs incurred										612
Capital expenditures										402
Duke Energy Carolinas and Duke Energy Progress | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets										802		87
Duke Energy Carolinas and Duke Energy Progress | Minimum | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Storm costs incurred										95
Capital expenditures										8
Duke Energy Carolinas and Duke Energy Progress | Minimum | Hurricanes Helene, Debby and Milton
Public Utilities, General Disclosures [Line Items]
Storm costs incurred										860
Capital expenditures										548
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Impairment of assets and other charges										6		29	7
Operation, maintenance and other										1,388		1,379	1,475
Capital expenditures										2,803		2,387	$ 2,070
Other Noncurrent Assets: Regulatory assets										4,555		4,546
Duke Energy Progress | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets										47		$ 55
Duke Energy Progress | Hurricanes Helene, Debby and Milton
Public Utilities, General Disclosures [Line Items]
Other Noncurrent Assets: Regulatory assets										219
Duke Energy Progress | Minimum | Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Storm costs incurred										248
Capital expenditures										146
2023 North Carolina Rate Case | NCUC | Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
MYRP period (in years)						3 years
Settlement amount						$ 19,500
Impairment of assets and other charges										29
Operation, maintenance and other										8
Approved rate increase (decrease) amount by state commission											$ 436
Approved return on equity (as a percent)					10.10%
2023 North Carolina Rate Case | NCUC | Duke Energy Carolinas | Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					53%
2023 North Carolina Rate Case | NCUC | Duke Energy Carolinas | Forecast
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease) amount by state commission							$ 768	$ 158	$ 174
2023 North Carolina Rate Case, Retail Allocated | NCUC | Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Settlement amount						$ 4,600
2024 South Carolina Rate Case | PSCSC | Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Settlement amount	$ 7,400
Impairment of assets and other charges										33
Operation, maintenance and other										2
Approved rate increase (decrease) amount by state commission	$ 150	$ 240
Approved return on equity (as a percent)		9.94%
Customer giveback		$ 84
Approved capital structure (as a percent)		51.21%
Interest expense										$ 11
Proposed rate period (in years)				2 years
Marshall Combustion Turbines CPCN Proceedings | NCUC | Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease)			$ 104
Requested rate increase (decrease), percent			2.20%
Hydrogen-Capable Advanced-Class Simple-Cycle Combustion Turbines, Number | numberOfCombustionTurbines			2
Winter rating, combustion turbines | MW			850

Regulatory Matters (Duke Ener_3

Regulatory Matters (Duke Energy Progress Narrative) (Details)

12 Months Ended

Feb. 07, 2025 USD ($) MW

Mar. 28, 2024 USD ($) MW

Aug. 18, 2023 USD ($)

Apr. 16, 2023

Oct. 06, 2022

Sep. 01, 2022 USD ($)

Aug. 17, 2027 USD ($)

Aug. 17, 2026 USD ($)

Aug. 17, 2025 USD ($)

Dec. 31, 2024 USD ($)

Aug. 17, 2024 USD ($)

Dec. 31, 2023 USD ($)

Dec. 31, 2022 USD ($)

Jan. 01, 2026 MW

Apr. 25, 2024 USD ($)

Public Utilities, General Disclosures [Line Items]

Impairment of assets and other charges

$ 38,000,000

$ 85,000,000

$ 434,000,000

Operation, maintenance and other

5,389,000,000

5,625,000,000

5,734,000,000

Debt Instrument, Face Amount

7,740,000,000

9,825,000,000

Duke Energy Progress

Public Utilities, General Disclosures [Line Items]

Impairment of assets and other charges

6,000,000

29,000,000

7,000,000

Operation, maintenance and other

1,388,000,000

1,379,000,000

1,475,000,000

Debt Instrument, Face Amount

677,000,000

1,000,000,000

Duke Energy Progress | Storm Recovery Bonds

Public Utilities, General Disclosures [Line Items]

Debt Instrument, Face Amount

$ 177,000,000

Duke Energy Carolinas

Public Utilities, General Disclosures [Line Items]

Impairment of assets and other charges

31,000,000

44,000,000

26,000,000

Operation, maintenance and other

1,740,000,000

1,774,000,000

$ 1,892,000,000

Debt Instrument, Face Amount

1,000,000,000

$ 2,650,000,000

2022 North Carolina Rate Case | NCUC | Duke Energy Progress

Public Utilities, General Disclosures [Line Items]

Proposed rate period (in years)

3 years

3 years

Approved rate increase (decrease) amount by state commission

$ 233,000,000

Settlement amount

$ 12,200,000,000

MYRP period (in years)

3 years

Approved return on equity (as a percent)

9.80%

Impairment of assets and other charges

28,000,000

Operation, maintenance and other

$ 8,000,000

2022 North Carolina Rate Case | NCUC | Duke Energy Progress | Equity

Public Utilities, General Disclosures [Line Items]

Approved return on equity (as a percent)

53%

2022 North Carolina Rate Case | NCUC | Duke Energy Progress | Forecast

Public Utilities, General Disclosures [Line Items]

Approved rate increase (decrease) amount by state commission

$ 494,000,000

$ 135,000,000

$ 126,000,000

2022 North Carolina Rate Case, Retail Allocated | NCUC | Duke Energy Progress

Public Utilities, General Disclosures [Line Items]

Settlement amount

$ 3,500,000,000

2022 South Carolina Rate Case | PSCSC | Duke Energy Progress

Public Utilities, General Disclosures [Line Items]

Approved rate increase (decrease) amount by state commission

$ 52,000,000

2022 South Carolina Rate Case, Retail Rate Case | PSCSC | Duke Energy Progress

Public Utilities, General Disclosures [Line Items]

Approved rate increase (decrease) amount by state commission

$ 36,000,000

Approved return on equity (as a percent)

9.60%

Deferred compliance costs period (in years)

33 months

2022 South Carolina Rate Case, Retail Rate Case | PSCSC | Duke Energy Progress | Equity

Public Utilities, General Disclosures [Line Items]

Approved return on equity (as a percent)

52.43%

2022 South Carolina Rate Case, Coal Ash Basin Closure Costs | PSCSC | Duke Energy Progress

Public Utilities, General Disclosures [Line Items]

Deferred compliance costs period (in years)

7 years

Deferred costs not recovering

$ 50,000,000

Person County Combined Cycle CPCN | NCUC | Duke Energy Progress

Public Utilities, General Disclosures [Line Items]

Requested rate increase (decrease)

$ 98,000,000

Public Utilities, Combined Cycle Plants, in Megawatts | MW

1,360

Requested rate increase (decrease), percent

2.60%

Person County Combined Cycle CPCN | NCUC | Duke Energy Progress | Subsequent Event

Public Utilities, General Disclosures [Line Items]

Requested rate increase (decrease)

$ 113,000,000

Public Utilities, Combined Cycle Plants, in Megawatts | MW

1,360

Requested rate increase (decrease), percent

2.60%

Person County Combined Cycle CPCN | NCUC | NCEMC | Forecast

Public Utilities, General Disclosures [Line Items]

Public Utilities, Combined Cycle Plants, in Megawatts | MW

225

Person County Combined Cycle CPCN | NCUC | NCEMC | Forecast | Subsequent Event

Public Utilities, General Disclosures [Line Items]

Public Utilities, Combined Cycle Plants, in Megawatts | MW

225

Person County Combined Cycle CPCN | NCEMC | Duke Energy Progress | Forecast

Public Utilities, General Disclosures [Line Items]

Public Utilities, Combined Cycle Plants, in Megawatts | MW

1,135

Regulatory Matters (Duke Ener_4

Regulatory Matters (Duke Energy Florida Narrative) (Details)

12 Months Ended

Sep. 23, 2024 USD ($)

Jul. 15, 2024 solar_projects

Oct. 16, 2023 USD ($)

Jan. 23, 2023 USD ($)

Oct. 17, 2022 USD ($)

Oct. 04, 2022 USD ($)

Jun. 15, 2022 USD ($)

Jan. 14, 2021 USD ($)

Jul. 01, 2020 USD ($) plant MW

Dec. 31, 2026 USD ($)

Dec. 31, 2025 USD ($)

Dec. 31, 2024 USD ($)

Dec. 31, 2023 USD ($)

Dec. 31, 2022 USD ($)

Jan. 15, 2025 USD ($)

Dec. 27, 2024 USD ($)

Aug. 01, 2024 USD ($)

Jul. 31, 2024 USD ($)

Sep. 29, 2023 USD ($)

Aug. 30, 2023 outage

Sep. 28, 2022 outage

Sep. 27, 2022 USD ($)

Apr. 11, 2022 USD ($)

May 04, 2021 USD ($)

Public Utilities, General Disclosures [Line Items]

Other Noncurrent Assets: Regulatory assets

$ 14,254,000,000

$ 13,618,000,000

Capital expenditures

12,263,000,000

12,622,000,000

$ 11,419,000,000

Hurricane Ian

Public Utilities, General Disclosures [Line Items]

Actual storm costs

$ 431,000,000

Duke Energy Florida

Public Utilities, General Disclosures [Line Items]

Other Noncurrent Assets: Regulatory assets

2,064,000,000

1,883,000,000

Capital expenditures

2,449,000,000

2,529,000,000

2,247,000,000

Duke Energy Florida | Natural Disasters and Other Casualty Events

Public Utilities, General Disclosures [Line Items]

Other Noncurrent Assets: Regulatory assets

936,000,000

Capital expenditures

69,000,000

Duke Energy Florida | Solar Plant

Public Utilities, General Disclosures [Line Items]

Estimated cost of generation facilities to be built

$ 1,100,000,000

Duke Energy Florida | FPSC

Public Utilities, General Disclosures [Line Items]

Number of solar plants petition for approval | plant

10

Solar generation capacity plants (in MW) | MW

749

Duke Energy Florida | FPSC | Natural Disasters and Other Casualty Events

Public Utilities, General Disclosures [Line Items]

Number of outages | outage

1,100,000

Duke Energy Florida | FPSC | Subsequent Event

Public Utilities, General Disclosures [Line Items]

Investment in transmission and distribution

$ 7,000,000,000

Duke Energy Florida | 2021 Settlement | FPSC

Public Utilities, General Disclosures [Line Items]

Approved rate increase (decrease) amount by state commission

79,000,000

49,000,000

$ 67,000,000

Approved capital structure (as a percent)

53%

Public utilities, basis points, increase

0.25%

Contract asset, noncurrent

$ 154,000,000

$ 173,000,000

$ 32,000,000

$ 141,000,000

$ 173,000,000

Proceeds from legal settlements

$ 180,000,000

Requested rate increase (decrease)

$ 56,000,000

Future investments in new cost

$ 1,000,000,000

Duke Energy Florida | 2021 Settlement | FPSC | US Treasury Securities

Public Utilities, General Disclosures [Line Items]

Public utilities, basis points, increase

0.50%

Duke Energy Florida | 2021 Settlement | FPSC | Minimum

Public Utilities, General Disclosures [Line Items]

Approved return on equity (as a percent)

8.85%

Duke Energy Florida | 2021 Settlement | FPSC | Minimum | US Treasury Securities

Public Utilities, General Disclosures [Line Items]

Approved return on equity (as a percent)

9.85%

Duke Energy Florida | 2021 Settlement | FPSC | Maximum

Public Utilities, General Disclosures [Line Items]

Approved return on equity (as a percent)

10.85%

Duke Energy Florida | 2021 Settlement | FPSC | Maximum | US Treasury Securities

Public Utilities, General Disclosures [Line Items]

Approved return on equity (as a percent)

10.10%

Duke Energy Florida | 2021 Settlement | FPSC | Weighted Average

Public Utilities, General Disclosures [Line Items]

Approved return on equity (as a percent)

9.85%

Duke Energy Florida | Storm Protection Plan | FPSC

Public Utilities, General Disclosures [Line Items]

Investment in transmission and distribution

$ 7,000,000,000

Cost reduction to transmission loop

$ 80,000,000

Cost reduction period (in years)

10 years

Duke Energy Florida | Hurricane Ian | FPSC | Natural Disasters and Other Casualty Events

Public Utilities, General Disclosures [Line Items]

Storm reserves

$ 1,100,000,000

$ 132,000,000

$ 63,000,000

$ 107,000,000

Interim recovery payments

$ 442,000,000

Duke Energy Florida | Hurricane Idalia | FPSC | Natural Disasters and Other Casualty Events

Public Utilities, General Disclosures [Line Items]

Number of customers impacted | outage

200,000

Interim recovery payments

$ 98,000,000

$ 166,000,000

Duke Energy Florida | Hurricane Idalia, Retail Portion | FPSC | Natural Disasters and Other Casualty Events

Public Utilities, General Disclosures [Line Items]

Interim recovery payments

92,000,000

Duke Energy Florida | Hurricane Idalia, Projected Costs | FPSC | Natural Disasters and Other Casualty Events

Public Utilities, General Disclosures [Line Items]

Interim recovery payments

$ 74,000,000

Duke Energy Florida | 2024 Florida Rate Case | FPSC

Public Utilities, General Disclosures [Line Items]

Number of solar plants petition for approval | solar_projects

12

Duke Energy Florida | 2024 Florida Rate Case | FPSC | Forecast

Public Utilities, General Disclosures [Line Items]

Requested rate increase (decrease)

$ (59,000,000)

$ (203,000,000)

Duke Energy Florida | 2024 Florida Rate Case | FPSC | Minimum

Public Utilities, General Disclosures [Line Items]

Approved return on equity (as a percent)

9.30%

Duke Energy Florida | 2024 Florida Rate Case | FPSC | Maximum

Public Utilities, General Disclosures [Line Items]

Approved return on equity (as a percent)

11.30%

Duke Energy Florida | 2024 Florida Rate Case | FPSC | Weighted Average

Public Utilities, General Disclosures [Line Items]

Approved return on equity (as a percent)

10.30%

Approved capital structure (as a percent)

53%

Regulatory Matters (Duke Ener_5

Regulatory Matters (Duke Energy Ohio Narrative) (Details) $ in Millions						12 Months Ended
	Dec. 02, 2024 USD ($)	Oct. 12, 2023 USD ($)	Aug. 18, 2023	Apr. 28, 2023 USD ($)	Sep. 19, 2022 USD ($)	Dec. 31, 2024 USD ($)	Aug. 17, 2024 USD ($)	Dec. 31, 2023 USD ($) site	Dec. 31, 2022 USD ($)
Public Utilities, General Disclosures [Line Items]
Operating Revenues						$ 30,357		$ 29,060	$ 28,768
Operation, maintenance and other						5,389		5,625	5,734
Income tax expense (benefit)						(590)		(438)	(300)
Public utilities, property, plant and equipment, net						123,303		115,315
Impairment of assets and other charges						(38)		(85)	(434)
Duke Energy Ohio
Public Utilities, General Disclosures [Line Items]
Operating Revenues						2,545		2,507	2,514
Operation, maintenance and other						485		478	523
Income tax expense (benefit)						(64)		(63)	21
Public utilities, property, plant and equipment, net						10,244		9,759
Impairment of assets and other charges						0		$ (3)	10
Duke Energy Ohio | Duke Energy Ohio Electric Base Rate Case | Public Utilities Commission Of Ohio
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease) amount by state commission					$ 23
Approved return on equity (as a percent)					9.50%
Duke Energy Ohio | Duke Energy Ohio Electric Base Rate Case | Public Utilities Commission Of Ohio | Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)					50.50%
Duke Energy Ohio | Energy Efficiency Cost Recovery | Public Utilities Commission Of Ohio
Public Utilities, General Disclosures [Line Items]
Regulated electric revenue						14
Duke Energy Ohio | Duke Energy Ohio Gas Base Rate Case | Public Utilities Commission Of Ohio
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease)				$ 32
Requested return on equity (as a percent)				9.60%
Duke Energy Ohio | Duke Energy Ohio Gas Base Rate Case | Public Utilities Commission Of Ohio | Maximum
Public Utilities, General Disclosures [Line Items]
Equity ratio (as a percent)				52.32%
Duke Energy Ohio | MGP Cost Recovery - 2009 Through 2012 | Public Utilities Commission Of Ohio
Public Utilities, General Disclosures [Line Items]
Number of environmental remediation sites | site								2
Duke Energy Ohio | MGP Cost Recovery - 2013 Through 2019 | Public Utilities Commission Of Ohio
Public Utilities, General Disclosures [Line Items]
Operating Revenues								$ 15
Operation, maintenance and other								58
Income tax expense (benefit)								72
Duke Energy Ohio | Duke Energy Kentucky Electric Base Rate Case | KPSC
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease) amount by state commission		$ 48
Duke Energy Ohio | Duke Energy Kentucky Electric Base Rate Case | KPSC | Maximum
Public Utilities, General Disclosures [Line Items]
Equity ratio (as a percent)		52.145%
Duke Energy Ohio | Duke Energy Kentucky Electric Base Rate Case, Electric Base Rates | KPSC
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)		9.75%
Duke Energy Ohio | Duke Energy Kentucky Electric Base Rate Case, Electric Riders | KPSC
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)		9.65%
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Operating Revenues						7,017		6,488	6,753
Operation, maintenance and other						1,388		1,379	1,475
Income tax expense (benefit)						(189)		(149)	(158)
Public utilities, property, plant and equipment, net						26,130		24,056
Impairment of assets and other charges						(6)		$ (29)	$ (7)
Duke Energy Progress | 2022 North Carolina Rate Case | NCUC
Public Utilities, General Disclosures [Line Items]
Approved rate increase (decrease) amount by state commission							$ 233
Approved return on equity (as a percent)			9.80%
Operation, maintenance and other						8
Impairment of assets and other charges						$ (28)
Duke Energy Progress | 2022 North Carolina Rate Case | NCUC | Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)			53%
Duke Energy Kentucky | Duke Energy Kentucky 2024 Electric Base Rate Case | KPSC
Public Utilities, General Disclosures [Line Items]
Requested rate increase (decrease)	$ 70
Requested return on equity (as a percent)	10.85%
Equity ratio (as a percent)	52.728%
Requested rate increase (decrease), net of tax (as a percent)	14.70%

Regulatory Matters (Duke Ener_6

Regulatory Matters (Duke Energy Indiana Narrative) (Details)

1 Months Ended

12 Months Ended

Feb. 13, 2025 USD ($) MW

Jan. 29, 2025 USD ($)

Apr. 04, 2024 USD ($)

Jun. 29, 2020 USD ($)

Dec. 31, 2024 USD ($)

Dec. 31, 2026

Dec. 31, 2025

Dec. 31, 2024 USD ($)

Dec. 31, 2023 USD ($)

Dec. 31, 2022 USD ($)

Sep. 20, 2023

Jun. 30, 2023 USD ($)

Feb. 03, 2023 USD ($)

Jun. 15, 2022 USD ($)

Dec. 31, 2021 USD ($)

Public Utilities, General Disclosures [Line Items]

Impairment of assets and other charges

$ 38,000,000

$ 85,000,000

$ 434,000,000

Operating Revenues

30,357,000,000

29,060,000,000

28,768,000,000

Duke Energy Indiana

Public Utilities, General Disclosures [Line Items]

Impairment of assets and other charges

0

0

388,000,000

Operating Revenues

$ 3,040,000,000

3,399,000,000

$ 3,922,000,000

Duke Energy Indiana | Indiana Rate Case 2019 | Indiana Utility Regulatory Commission

Public Utilities, General Disclosures [Line Items]

Approved rate increase (decrease) amount by state commission

$ 146,000,000

Disclosure of rate matters, rate base

$ 10,200,000,000

Public utilities, disclosure of rate matters, reduction of rate base

$ 200,000,000

Public utilities, approved return on equity, step one estimated percentage (as a percent)

75%

Public utilities, approved return on equity, step two estimated (as a percent)

25%

Impairment of assets and other charges

211,000,000

Operating Revenues

46,000,000

Refunds to customers

$ 70,000,000

$ 70,000,000

Duke Energy Indiana | Indiana Coal Ash Recovery | Indiana Utility Regulatory Commission

Public Utilities, General Disclosures [Line Items]

Impairment of assets and other charges

$ 175,000,000

Simple interest of refunds (as a percent)

4.71%

Duke Energy Indiana | TDSIG 2.0 | Indiana Utility Regulatory Commission

Public Utilities, General Disclosures [Line Items]

Future investments in new cost

$ 2,000,000,000

Duke Energy Indiana | 2024 Indiana Rate Case | Indiana Utility Regulatory Commission

Public Utilities, General Disclosures [Line Items]

Requested rate increase (decrease)

$ 492,000,000

Requested rate increase (decrease), net of tax (as a percent)

16.20%

Requested return on equity (as a percent)

10.50%

Future investments in new cost

$ 1,600,000,000

Equity ratio (as a percent)

53%

Accumulated other comprehensive loss (income)

$ 29,000,000

Duke Energy Indiana | 2024 Indiana Rate Case | Indiana Utility Regulatory Commission | Subsequent Event

Public Utilities, General Disclosures [Line Items]

Requested rate increase (decrease), amended, amount

$ 385,000,000

Approved rate increase (decrease) amount by state commission

$ 296,000,000

Approved return on equity (as a percent)

9.75%

Equity ratio (as a percent)

53%

Duke Energy Indiana | 2024 Indiana Rate Case | Indiana Utility Regulatory Commission | Forecast

Public Utilities, General Disclosures [Line Items]

Requested rate increase (decrease), net of tax (as a percent)

4.50%

11.70%

Duke Energy Indiana | Cayuga Combined Cycle CPCN | Indiana Utility Regulatory Commission | Subsequent Event

Public Utilities, General Disclosures [Line Items]

Requested rate increase (decrease), net of tax (as a percent)

5.40%

Winter rating, combustion turbines | MW

471

Estimated cost of generation facilities to be built

$ 2,970,000,000

Duke Energy Indiana | Cayuga Combined Cycle CPCN, Gas-Fired | Indiana Utility Regulatory Commission | Subsequent Event

Public Utilities, General Disclosures [Line Items]

Winter rating, combustion turbines | MW

1,476

Duke Energy Indiana | Cayuga Combined Cycle CPCN, Coal-Fired | Indiana Utility Regulatory Commission | Subsequent Event

Public Utilities, General Disclosures [Line Items]

Winter rating, combustion turbines | MW

1,005

Regulatory Matters (Piedmont Na

Regulatory Matters (Piedmont Narrative) (Details) - Piedmont - 2024 North Carolina Rate Case - NCUC $ in Millions	Sep. 13, 2024 USD ($)
Public Utilities, General Disclosures [Line Items]
Increase in net annual retail revenues in the first year	$ 88
Increase in net annual retail revenue after the first year	$ 10
Requested return on equity (as a percent)	9.80%
Equity ratio (as a percent)	52.30%

Regulatory Matters - Narrative

Regulatory Matters - Narrative (Details) customers in Thousands, $ in Billions	12 Months Ended
	Dec. 31, 2024 USD ($)	Oct. 31, 2024 customers	Sep. 30, 2024 customers	Aug. 31, 2024 customers
Hurricanes Helene, Debby and Milton
Regulatory Matters [Line Items]
Estimated storm restoration costs | $	$ 2.6
Hurricane Debby
Regulatory Matters [Line Items]
Number of customers impacted				700
Hurricane Helene
Regulatory Matters [Line Items]
Number of customers impacted			3,500
Hurricane Milton | Duke Energy Florida
Regulatory Matters [Line Items]
Number of customers impacted		1,000

Regulatory Matters - Total Stor

Regulatory Matters - Total Storm Restoration Costs Across Subsidiary Registrants (Details) - Hurricanes Helene, Debby and Milton $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs	$ 2,600
Minimum
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs	2,800
Duke Energy Carolinas | Maximum
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs	1,150
Duke Energy Progress | Maximum
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs	450
Duke Energy Florida | Maximum
Public Utilities, General Disclosures [Line Items]
Estimated storm restoration costs	$ 1,150

Regulatory Matters (Schedule _2

Regulatory Matters (Schedule of Net Carrying Value Of Facilities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Public Utilities, General Disclosures [Line Items]
Remaining net book value	$ 123,303	$ 115,315
Duke Energy Carolinas
Public Utilities, General Disclosures [Line Items]
Remaining net book value	39,292	36,774
Duke Energy Progress
Public Utilities, General Disclosures [Line Items]
Remaining net book value	26,130	24,056
Duke Energy Florida
Public Utilities, General Disclosures [Line Items]
Remaining net book value	22,840	21,286
Duke Energy Indiana
Public Utilities, General Disclosures [Line Items]
Remaining net book value	$ 13,122	$ 12,399

Commitments and Contingencies_2

Commitments and Contingencies (Narrative) (Details) $ in Millions		12 Months Ended
	Dec. 20, 2024 Plaintiff	Dec. 31, 2024 USD ($) reactor case	Dec. 31, 2023 USD ($)
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor		95
Insured public liability limit per nuclear incident		$ 16,200
Excess nuclear liability program coverage		15,800
Pro rata assessment for each reactor owned for each incident exceeding public liability insurance		166
Annual payment limit to pro rata assessments		24.7
Industry aggregate limit		3,200
Sublimit for non-nuclear terrorist events		1,800
Sublimit property damage losses		1,500
Additional nuclear accident limit		$ 1,250
Accidental outage insurance coverage initial weeks (in days)		365 days
Insurance coverage percentage initial weeks (as a percent)		100%
Accidental outage insurance coverage additional weeks (in days)		770 days
Insurance coverage percentage additional weeks (as a percent)		80%
Accidental outage insurance coverage policy limit		$ 490
Weeks of sublimits for accidental outage coverage (in days)		728 days
Sublimit accidental outage recovery		$ 291
Maximum magnitude of retroactive premiums		10
Maximum period for retroactive premium assessment (in years)		6 years
Maximum | Pipeline and storage capacity contracts
Loss Contingencies [Line Items]
Long-term purchase commitment term (in years)		18 years
Maximum | Natural gas supply contracts fixed payment
Loss Contingencies [Line Items]
Long-term purchase commitment term (in years)		3 years
Maximum | Natural gas supply purchase commitments
Loss Contingencies [Line Items]
Long-term purchase commitment term (in years)		6 years
Texas Storm Uri Tort Litigation | Pending Litigation
Loss Contingencies [Line Items]
Number of pending claims | case		5
Mooresville Coal Ash Class Action Litigation
Loss Contingencies [Line Items]
Number of plaintiffs | Plaintiff	15
Duke Energy Carolinas
Loss Contingencies [Line Items]
Primary nuclear liability program coverage		$ 500
Max retroactive premium assessments		162
Duke Energy Carolinas | Asbestos Issue
Loss Contingencies [Line Items]
Asbestos-related injuries and damages reserves		396	$ 423
Loss contingency, receivable, noncurrent		539	572
Duke Energy Progress
Loss Contingencies [Line Items]
Primary nuclear liability program coverage		500
Max retroactive premium assessments		99
Duke Energy Florida
Loss Contingencies [Line Items]
Primary nuclear liability program coverage		100
Max retroactive premium assessments		1
Duke Energy and Duke Energy Carolinas | ASU 2016-13
Loss Contingencies [Line Items]
Premium receivable, allowance for credit loss		$ 9	$ 9
Catawba | Duke Energy Carolinas
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor		2
Dedicated additional nuclear accident limit		$ 1,250
Additional Non-nuclear accident limit		$ 750
Potential obligation percentage (as a percent)		100%
McGuire | Duke Energy Carolinas
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor		2
Oconee | Duke Energy Carolinas
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor		3
Additional Non-nuclear accident limit		$ 750
Harris | Duke Energy Progress
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor		1
Robinson | Duke Energy Progress
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor		1
Brunswick | Duke Energy Progress
Loss Contingencies [Line Items]
Number of licensed nuclear reactors | reactor		2
Crystal River Unit 3 | Duke Energy Florida
Loss Contingencies [Line Items]
Sublimit property damage losses		$ 50

Commitments and Contingencies_3

Commitments and Contingencies (Schedule of Environmental Loss Contingencies) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other (includes $54 at 2023 related to VIEs)	Other (includes $54 at 2023 related to VIEs)
Environmental reserves
Loss Contingencies [Line Items]
Reserves for Environmental Remediation	$ 73	$ 88
Environmental reserves | Duke Energy Carolinas
Loss Contingencies [Line Items]
Reserves for Environmental Remediation	24	23
Environmental reserves | Progress Energy
Loss Contingencies [Line Items]
Reserves for Environmental Remediation	19	19
Environmental reserves | Duke Energy Progress
Loss Contingencies [Line Items]
Reserves for Environmental Remediation	9	9
Environmental reserves | Duke Energy Florida
Loss Contingencies [Line Items]
Reserves for Environmental Remediation	10	10
Environmental reserves | Duke Energy Ohio
Loss Contingencies [Line Items]
Reserves for Environmental Remediation	21	36
Environmental reserves | Duke Energy Indiana
Loss Contingencies [Line Items]
Reserves for Environmental Remediation	2	2
Environmental reserves | Piedmont
Loss Contingencies [Line Items]
Reserves for Environmental Remediation	$ 7	$ 7

Commitments and Contingencies_4

Commitments and Contingencies (Purchased Power) (Details) - Purchased Power Contracts $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Duke Energy Progress
Unconditional Purchase Obligations [Abstract]
2025	$ 22
2026	18
2027	19
2028	18
2029	3
Thereafter	31
Total	$ 111
Duke Energy Progress | Minimum
Unconditional Purchase Obligations [Abstract]
Net plant output (as a percent)	18%
Duke Energy Progress | Maximum
Unconditional Purchase Obligations [Abstract]
Net plant output (as a percent)	100%
Duke Energy Indiana
Unconditional Purchase Obligations [Abstract]
2025	$ 33
2026	12
Total	$ 45

Commitments and Contingencies_5

Commitments and Contingencies (Gas Supply Contracts) (Details) - Natural Gas Supply and Capacity Contracts $ in Millions	Dec. 31, 2024 USD ($)
Duke Energy Ohio
Long-term Purchase Commitment [Line Items]
2025	$ 104
2026	75
2027	71
2028	69
2029	65
Thereafter	554
Total	938
Piedmont
Long-term Purchase Commitment [Line Items]
2025	369
2026	366
2027	322
2028	241
2029	233
Thereafter	695
Total	$ 2,226

Leases (Narrative) (Details)

Leases (Narrative) (Details) - Construction and transportation of natural gas pipelines - Piedmont - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Net investment in lease, current	$ 2	$ 2
Duke Energy Carolinas
Lessee, Lease, Description [Line Items]
Net investment in lease, noncurrent	$ 197	$ 199

Leases (Lease Costs) (Details)

Leases (Lease Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 275	$ 236
Short-term lease expense	7	5
Variable lease expense	33	27
Finance lease expense
Amortization of leased assets	113	160
Interest on lease liabilities	41	46
Total finance lease expense	154	206
Total lease expense	469	474
Duke Energy Carolinas
Lessee, Lease, Description [Line Items]
Operating lease expense	66	41
Variable lease expense	2	2
Finance lease expense
Amortization of leased assets	7	7
Interest on lease liabilities	31	31
Total finance lease expense	38	38
Total lease expense	106	81
Progress Energy
Lessee, Lease, Description [Line Items]
Operating lease expense	173	157
Short-term lease expense	3	2
Variable lease expense	29	22
Finance lease expense
Amortization of leased assets	46	57
Interest on lease liabilities	44	45
Total finance lease expense	90	102
Total lease expense	295	283
Duke Energy Progress
Lessee, Lease, Description [Line Items]
Operating lease expense	82	80
Short-term lease expense	1	1
Variable lease expense	19	11
Finance lease expense
Amortization of leased assets	38	35
Interest on lease liabilities	41	43
Total finance lease expense	79	78
Total lease expense	181	170
Duke Energy Florida
Lessee, Lease, Description [Line Items]
Operating lease expense	91	77
Short-term lease expense	2	1
Variable lease expense	10	11
Finance lease expense
Amortization of leased assets	8	22
Interest on lease liabilities	3	2
Total finance lease expense	11	24
Total lease expense	114	113
Duke Energy Ohio
Lessee, Lease, Description [Line Items]
Operating lease expense	12	11
Finance lease expense
Total lease expense	12	11
Duke Energy Indiana
Lessee, Lease, Description [Line Items]
Operating lease expense	23	17
Short-term lease expense	1	1
Variable lease expense	1
Finance lease expense
Interest on lease liabilities	1	1
Total finance lease expense	1	1
Total lease expense	26	19
Piedmont
Lessee, Lease, Description [Line Items]
Operating lease expense	2	2
Variable lease expense	1	1
Finance lease expense
Total lease expense	$ 3	$ 3

Leases (Operating Lease Maturit

Leases (Operating Lease Maturities) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Lessee, Operating Lease, Liability, Payment, Due
2025	$ 256
2026	241
2027	191
2028	153
2029	120
Thereafter	458
Total operating lease payments	1,419
Less: Present value discount	(254)
Total operating lease liabilities	1,165
Duke Energy Carolinas
Lessee, Operating Lease, Liability, Payment, Due
2025	24
2026	21
2027	14
2028	11
2029	10
Thereafter	53
Total operating lease payments	133
Less: Present value discount	(26)
Total operating lease liabilities	107
Progress Energy
Lessee, Operating Lease, Liability, Payment, Due
2025	121
2026	124
2027	97
2028	82
2029	74
Thereafter	307
Total operating lease payments	805
Less: Present value discount	(151)
Total operating lease liabilities	654
Duke Energy Progress
Lessee, Operating Lease, Liability, Payment, Due
2025	55
2026	59
2027	60
2028	59
2029	52
Thereafter	156
Total operating lease payments	441
Less: Present value discount	(67)
Total operating lease liabilities	374
Duke Energy Florida
Lessee, Operating Lease, Liability, Payment, Due
2025	66
2026	65
2027	37
2028	23
2029	22
Thereafter	151
Total operating lease payments	364
Less: Present value discount	(84)
Total operating lease liabilities	280
Duke Energy Ohio
Lessee, Operating Lease, Liability, Payment, Due
2025	1
2026	1
2027	1
2028	1
2029	1
Thereafter	4
Total operating lease payments	9
Less: Present value discount	(2)
Total operating lease liabilities	7
Duke Energy Indiana
Lessee, Operating Lease, Liability, Payment, Due
2025	7
2026	7
2027	5
2028	3
2029	3
Thereafter	24
Total operating lease payments	49
Less: Present value discount	(10)
Total operating lease liabilities	39
Piedmont
Lessee, Operating Lease, Liability, Payment, Due
2025	5
2026	1
2027	1
2028	1
2029	0
Thereafter	0
Total operating lease payments	8
Less: Present value discount	0
Total operating lease liabilities	$ 8

Leases (Finance Lease Maturitie

Leases (Finance Lease Maturities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Finance Lease, Liability, Payment, Due
2025	$ 86
2026	87
2027	82
2028	79
2029	79
Thereafter	489
Total finance lease payments	902
Less: Amounts representing interest	(332)
Total finance lease liabilities	570	$ 639
Duke Energy Carolinas
Finance Lease, Liability, Payment, Due
2025	38
2026	38
2027	38
2028	38
2029	38
Thereafter	351
Total finance lease payments	541
Less: Amounts representing interest	(271)
Total finance lease liabilities	270	277
Progress Energy
Finance Lease, Liability, Payment, Due
2025	91
2026	92
2027	89
2028	87
2029	88
Thereafter	444
Total finance lease payments	891
Less: Amounts representing interest	(310)
Total finance lease liabilities	581	571
Duke Energy Progress
Finance Lease, Liability, Payment, Due
2025	80
2026	81
2027	81
2028	81
2029	81
Thereafter	393
Total finance lease payments	797
Less: Amounts representing interest	(282)
Total finance lease liabilities	515	552
Duke Energy Florida
Finance Lease, Liability, Payment, Due
2025	11
2026	11
2027	8
2028	6
2029	7
Thereafter	51
Total finance lease payments	94
Less: Amounts representing interest	(28)
Total finance lease liabilities	66	19
Duke Energy Indiana
Finance Lease, Liability, Payment, Due
2025	1
2026	1
2027	1
2028	1
2029	1
Thereafter	21
Total finance lease payments	26
Less: Amounts representing interest	(16)
Total finance lease liabilities	$ 10	$ 9

Leases (Supplemental Financial

Leases (Supplemental Financial Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Assets
Operating lease right-of-use assets, net	$ 1,148	$ 1,092
Net property, plant and equipment	645	687
Total lease assets	1,793	1,779
Current
Operating	208	188
Finance	46	115
Noncurrent
Operating	957	917
Finance	524	524
Total lease liabilities	1,735	1,744
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	250	228
Operating cash flows from finance leases	41	46
Financing cash flows from finance leases	113	160
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating	322	286
Finance	$ 81	$ 36
Weighted average remaining lease term (years)
Operating leases	8 years	9 years
Finance leases	11 years	11 years
Weighted-average discount rate (as a percent)
Operating leases	4.30%	3.10%
Finance leases	8.40%	8.50%
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Public utilities, property, plant and equipment, net	Public utilities, property, plant and equipment, net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current Liabilities: Other	Current Liabilities: Other
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current maturities of long-term debt	Current maturities of long-term debt
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Operating lease liabilities	Operating lease liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-Term Debt	Long-Term Debt
Duke Energy Carolinas
Assets
Operating lease right-of-use assets, net	$ 98	$ 78
Net property, plant and equipment	252	268
Total lease assets	350	346
Current
Operating	20	15
Finance	8	8
Noncurrent
Operating	87	75
Finance	262	269
Total lease liabilities	377	367
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	24	18
Operating cash flows from finance leases	31	31
Financing cash flows from finance leases	7	7
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating	50	$ 14
Finance	$ 1
Weighted average remaining lease term (years)
Operating leases	9 years	10 years
Finance leases	15 years	16 years
Weighted-average discount rate (as a percent)
Operating leases	4.30%	4%
Finance leases	11.50%	11.50%
Progress Energy
Assets
Operating lease right-of-use assets, net	$ 625	$ 617
Net property, plant and equipment	620	615
Total lease assets	1,245	1,232
Current
Operating	97	94
Finance	48	46
Noncurrent
Operating	557	544
Finance	533	525
Total lease liabilities	1,235	1,209
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	122	123
Operating cash flows from finance leases	44	45
Financing cash flows from finance leases	46	57
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating	43	$ 92
Finance	$ 55
Weighted average remaining lease term (years)
Operating leases	9 years	10 years
Finance leases	11 years	11 years
Weighted-average discount rate (as a percent)
Operating leases	4%	3.80%
Finance leases	8.90%	9.10%
Duke Energy Progress
Assets
Operating lease right-of-use assets, net	$ 348	$ 318
Net property, plant and equipment	512	552
Total lease assets	860	870
Current
Operating	42	45
Finance	41	38
Noncurrent
Operating	332	293
Finance	474	514
Total lease liabilities	889	890
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	57	64
Operating cash flows from finance leases	41	43
Financing cash flows from finance leases	38	35
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating	$ 3	$ 1
Weighted average remaining lease term (years)
Operating leases	8 years	9 years
Finance leases	10 years	11 years
Weighted-average discount rate (as a percent)
Operating leases	3.90%	3.60%
Finance leases	9.20%	9.20%
Duke Energy Florida
Assets
Operating lease right-of-use assets, net	$ 277	$ 299
Net property, plant and equipment	108	63
Total lease assets	385	362
Current
Operating	55	49
Finance	7	8
Noncurrent
Operating	225	251
Finance	59	11
Total lease liabilities	346	319
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	65	59
Operating cash flows from finance leases	3	2
Financing cash flows from finance leases	8	22
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating	40	$ 91
Finance	$ 55
Weighted average remaining lease term (years)
Operating leases	11 years	11 years
Finance leases	15 years	18 years
Weighted-average discount rate (as a percent)
Operating leases	4.20%	4%
Finance leases	5.90%	7.60%
Duke Energy Ohio
Assets
Operating lease right-of-use assets, net	$ 6	$ 16
Total lease assets	6	16
Current
Operating	1	1
Noncurrent
Operating	6	16
Total lease liabilities	7	17
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 1	2
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating		$ 2
Weighted average remaining lease term (years)
Operating leases	11 years	13 years
Weighted-average discount rate (as a percent)
Operating leases	4.10%	4.20%
Duke Energy Indiana
Assets
Operating lease right-of-use assets, net	$ 37	$ 50
Net property, plant and equipment	6	6
Total lease assets	43	56
Current
Operating	6	6
Noncurrent
Operating	33	46
Finance	10	9
Total lease liabilities	49	61
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	8	7
Operating cash flows from finance leases	1	1
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating	7	$ 6
Finance	$ 1
Weighted average remaining lease term (years)
Operating leases	11 years	13 years
Finance leases	20 years	22 years
Weighted-average discount rate (as a percent)
Operating leases	4%	3.90%
Finance leases	11.70%	11.90%
Piedmont
Assets
Operating lease right-of-use assets, net	$ 4	$ 4
Total lease assets	4	4
Current
Operating	1
Noncurrent
Operating	7	10
Total lease liabilities	8	10
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	1
Lease assets obtained in exchange for new lease liabilities (non-cash)
Operating	$ 3	$ 2
Weighted average remaining lease term (years)
Operating leases	4 years	4 years
Finance leases		3 years
Weighted-average discount rate (as a percent)
Operating leases	3.90%	2.40%
Finance leases		5.40%

Debt and Credit Facilities (Sum

Debt and Credit Facilities (Summary of Debt and Related Terms) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.37%	4.35%
Unsecured Debt	$ 34,283	$ 30,435
Secured Debt	3,672	4,202
First mortgage bonds	39,842	37,443
Finance leases	570	639
Tax exempt bonds	1,331	1,331
Notes payable and commercial paper	4,213	4,925
Fair value hedge carrying value adjustment	(82)	32
Unamortized debt discount and premium, net	845	916
Unamortized debt issuance costs	(401)	(383)
Total debt	84,273	79,540
Short-term notes payable and commercial paper	(3,584)	(4,288)
Current maturities of long-term debt	(4,349)	(2,800)
Total long-term debt	76,340	72,452
Short term obligations classified as long-term debt	$ 937	$ 937
Unsecured Debt
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.53%	4.36%
Secured Debt
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	3.75%	4.23%
First Mortgage Bonds
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.24%	4.18%
Finance Leases
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)
Tax-exempt bonds
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	3.85%	3.89%
Short term obligations classified as long-term debt	$ 312	$ 312
Notes Payable And Commercial Paper
Debt Instrument [Line Items]
Weighted Average Interest Rate (as a percent)	4.67%	5.58%
Short term obligations classified as long-term debt	$ 625	$ 625
Weighted average days to maturity (in days)	13 days	23 days
Purchase Accounting Adjustments | Parent Company
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 23	$ 25
Purchase Accounting Adjustments | Progress Energy
Debt Instrument [Line Items]
Unamortized debt discount and premium, net	925	992
Purchase Accounting Adjustments | Piedmont
Debt Instrument [Line Items]
Unamortized debt discount and premium, net	56	69
Duke Energy Carolinas
Debt Instrument [Line Items]
Unsecured Debt	1,605	1,150
Secured Debt	1,463	1,441
First mortgage bonds	13,955	12,955
Finance leases	270	277
Unamortized debt discount and premium, net	(20)	(29)
Unamortized debt issuance costs	(83)	(82)
Total debt	17,490	16,680
Current maturities of long-term debt	(521)	(19)
Total long-term debt	16,969	15,993
Short term obligations classified as long-term debt	300	300
Duke Energy Carolinas | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	300	968
Short-term money pool/intercompany borrowings		668
Duke Energy Carolinas | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt		0
Progress Energy
Debt Instrument [Line Items]
Unsecured Debt	2,085	1,800
Secured Debt	2,147	2,379
First mortgage bonds	19,223	18,550
Finance leases	581	571
Tax exempt bonds	500	500
Unamortized debt discount and premium, net	(44)	(46)
Unamortized debt issuance costs	(146)	(145)
Total debt	25,573	24,802
Current maturities of long-term debt	(1,517)	(661)
Total long-term debt	22,979	23,098
Progress Energy | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	1,227	1,193
Short-term money pool/intercompany borrowings	1,077	1,043
Duke Energy Progress
Debt Instrument [Line Items]
Unsecured Debt	185
Secured Debt	1,269	1,121
First mortgage bonds	9,974	9,475
Finance leases	515	552
Tax exempt bonds	500	500
Unamortized debt discount and premium, net	(24)	(24)
Unamortized debt issuance costs	(65)	(60)
Total debt	13,115	12,605
Current maturities of long-term debt	(983)	(72)
Total long-term debt	11,521	11,642
Short term obligations classified as long-term debt	150	150
Duke Energy Progress | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	761	1,041
Short-term money pool/intercompany borrowings	611	891
Duke Energy Progress | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt		0
Duke Energy Florida
Debt Instrument [Line Items]
Unsecured Debt	250	150
Secured Debt	879	1,258
First mortgage bonds	9,247	9,075
Finance leases	66	19
Unamortized debt discount and premium, net	(19)	(20)
Unamortized debt issuance costs	(76)	(81)
Total debt	10,814	10,553
Current maturities of long-term debt	(534)	(589)
Total long-term debt	9,814	9,812
Duke Energy Florida | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	467	152
Short-term money pool/intercompany borrowings	466	152
Duke Energy Florida | Purchase Accounting Adjustments
Debt Instrument [Line Items]
Finance leases		63
Duke Energy Ohio
Debt Instrument [Line Items]
Unsecured Debt	1,380	1,155
First mortgage bonds	2,722	2,300
Tax exempt bonds	77	77
Unamortized debt discount and premium, net	(23)	(24)
Unamortized debt issuance costs	(18)	(15)
Total debt	4,327	4,131
Current maturities of long-term debt	(245)	0
Total long-term debt	3,920	3,518
Short term obligations classified as long-term debt	52	52
Duke Energy Ohio | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	189	638
Short-term money pool/intercompany borrowings	162	613
Duke Energy Ohio | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	27	27
Duke Energy Indiana
Debt Instrument [Line Items]
Unsecured Debt	390	393
First mortgage bonds	3,937	3,638
Finance leases	10	9
Tax exempt bonds	352	352
Unamortized debt discount and premium, net	(16)	(16)
Unamortized debt issuance costs	(25)	(25)
Total debt	4,808	4,758
Current maturities of long-term debt	(4)	(4)
Total long-term debt	4,794	4,498
Short term obligations classified as long-term debt	435	435
Duke Energy Indiana | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	160	407
Short-term money pool/intercompany borrowings	10	256
Duke Energy Indiana | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	285	285
Piedmont
Debt Instrument [Line Items]
Unsecured Debt	4,030	3,695
Unamortized debt discount and premium, net	(8)	(8)
Unamortized debt issuance costs	(19)	(19)
Total debt	4,742	4,206
Current maturities of long-term debt	(205)	(40)
Total long-term debt	3,798	3,628
Piedmont | Related Party
Debt Instrument [Line Items]
Money pool/intercompany borrowings	739	538
Short-term money pool/intercompany borrowings	$ 739	$ 538

Debt and Credit Facilities (S_2

Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Current maturities of long-term debt		$ 4,349	$ 2,800
Duke Energy Florida
Debt Instrument [Line Items]
Current maturities of long-term debt		534	589
Duke Energy Ohio
Debt Instrument [Line Items]
Current maturities of long-term debt		245	0
Piedmont
Debt Instrument [Line Items]
Current maturities of long-term debt		205	40
Duke Energy Carolinas
Debt Instrument [Line Items]
Current maturities of long-term debt		521	19
Duke Energy Carolinas | Maturities Due January 2025 | Subsequent Event
Debt Instrument [Line Items]
Repayments of debt	$ 500
Duke Energy Progress
Debt Instrument [Line Items]
Current maturities of long-term debt		$ 983	$ 72
Unsecured Debt | Parent | Debt Maturing April 2025, 3.364% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		3.364%
Current maturities of long-term debt		$ 420
Unsecured Debt | Parent | Debt Maturing April 2025, 3.950% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		3.95%
Current maturities of long-term debt		$ 250
Unsecured Debt | Parent | Debt Maturing September 2025, 0.900% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		0.90%
Current maturities of long-term debt		$ 650
Unsecured Debt | Parent | Debt Maturing December 2025, 5.000% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5%
Current maturities of long-term debt		$ 500
Unsecured Debt | Duke Energy Florida | Debt Maturing October 2025, 5.303% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.303%
Current maturities of long-term debt		$ 100
Unsecured Debt | Duke Energy Ohio | Debt Maturing June 2025, 6.900% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		6.90%
Current maturities of long-term debt		$ 150
Unsecured Debt | Duke Energy Ohio | Debt Maturing October 2025, 3.230% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		3.23%
Current maturities of long-term debt		$ 95
Unsecured Debt | Piedmont | Debt Maturing September 2025, 3.600% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		3.60%
Current maturities of long-term debt		$ 150
Secured Debt | Duke Energy Carolinas | Debt Maturing January 2025, 5.378% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.378%
Current maturities of long-term debt		$ 305
Secured Debt | Duke Energy Carolinas | Debt Maturing January 2025, 5.423% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.423%
Current maturities of long-term debt		$ 195
Secured Debt | Duke Energy Progress | Debt Maturing April 2025, 5.456% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.456%
Current maturities of long-term debt		$ 240
Secured Debt | Duke Energy Progress | Debt Maturing April 2025, 5.467% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		5.467%
Current maturities of long-term debt		$ 160
First Mortgage Bonds | Duke Energy Florida | Debt Maturing October 2073, 4.910% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		4.91%
Current maturities of long-term debt		$ 200
First Mortgage Bonds | Duke Energy Florida | Debt Maturing April 2074, 4.910% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		4.91%
Current maturities of long-term debt		$ 173
First Mortgage Bonds | Duke Energy Progress | Debt Maturing August 2025, 3.250% Coupon
Debt Instrument [Line Items]
Interest rate (as a percent)		3.25%
Current maturities of long-term debt		$ 500
Other
Debt Instrument [Line Items]
Current maturities of long-term debt		$ 261
First Mortgage Bonds | Duke Energy Florida | Debt Maturing October 2073, 4.910% Coupon
Debt Instrument [Line Items]
Term (in years)		12 months
First Mortgage Bonds | Duke Energy Florida | Debt Maturing April 2074, 4.910% Coupon
Debt Instrument [Line Items]
Term (in years)		12 months

Debt and Credit Facilities (Ann

Debt and Credit Facilities (Annual Maturities) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	$ 4,349
2026	4,925
2027	3,082
2028	3,937
2029	4,971
Thereafter	58,976
Total long-term debt, including current maturities	80,240
Unamortized debt discount and premium, net	(1,000)
Purchase Accounting Adjustments
Long-term Debt, Fiscal Year Maturity [Abstract]
Unamortized debt discount and premium, net	1,004
Duke Energy Carolinas
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	521
2026	1,078
2027	26
2028	976
2029	778
Thereafter	14,214
Total long-term debt, including current maturities	17,593
Progress Energy
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	1,525
2026	539
2027	807
2028	1,411
2029	1,618
Thereafter	18,786
Total long-term debt, including current maturities	24,686
Duke Energy Progress
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	984
2026	470
2027	89
2028	593
2029	847
Thereafter	9,610
Total long-term debt, including current maturities	12,593
Duke Energy Florida
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	541
2026	69
2027	718
2028	819
2029	771
Thereafter	7,525
Total long-term debt, including current maturities	10,443
Duke Energy Ohio
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	245
2026	45
2027	77
2028	40
2029	530
Thereafter	3,270
Total long-term debt, including current maturities	4,207
Duke Energy Indiana
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	4
2026	4
2027	27
2028	7
2029	155
Thereafter	4,643
Total long-term debt, including current maturities	4,840
Piedmont
Long-term Debt, Fiscal Year Maturity [Abstract]
2025	205
2026	40
2027	300
2029	660
Thereafter	2,825
Total long-term debt, including current maturities	$ 4,030

Debt and Credit Facilities (Sho

Debt and Credit Facilities (Short Term Obligations Classified As Long Term) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	$ 937	$ 937
Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	312	312
Commercial Paper
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	625	625
Duke Energy Carolinas
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	300	300
Duke Energy Carolinas | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt		0
Duke Energy Carolinas | Commercial Paper
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	300	300
Duke Energy Progress
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	150	150
Duke Energy Progress | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt		0
Duke Energy Progress | Commercial Paper
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	150	150
Duke Energy Ohio
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	52	52
Duke Energy Ohio | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	27	27
Duke Energy Ohio | Commercial Paper
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	25	25
Duke Energy Indiana
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	435	435
Duke Energy Indiana | Tax-exempt bonds
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	285	285
Duke Energy Indiana | Commercial Paper
Debt Instrument [Line Items]
Short term obligations classified as long-term debt	$ 150	$ 150

Debt and Credit Facilities (Nar

Debt and Credit Facilities (Narrative) (Details)

1 Months Ended

2 Months Ended

3 Months Ended

12 Months Ended

Nov. 07, 2024 USD ($)

Jun. 30, 2023 day

Apr. 03, 2023

Jan. 31, 2025 USD ($)

Apr. 30, 2024 USD ($)

Mar. 31, 2024 USD ($)

Jan. 31, 2024 USD ($)

Apr. 30, 2023 USD ($) $ / shares

Dec. 31, 2022 USD ($)

Sep. 30, 2022 USD ($)

Mar. 31, 2022 USD ($)

Feb. 27, 2025 USD ($)

Dec. 31, 2024 USD ($) $ / shares

Jun. 30, 2024 USD ($)

Dec. 31, 2023 USD ($) $ / shares

Mar. 31, 2023 USD ($)

Mar. 30, 2022 USD ($)

Debt Instrument [Line Items]

Debt issuances

$ 7,740,000,000

$ 9,825,000,000

Common stock, par value (in usd per share) | $ / shares

$ 0.001

$ 0.001

Demand notes, maximum amount available for sale

$ 4,000,000,000

Demand notes, maximum amount outstanding

$ 2,000,000,000

Principal amount of demand notes

$ 1,070,000,000

$ 985,000,000

Current maturities of long-term debt

4,349,000,000

2,800,000,000

Other loans outstanding against cash surrender value of life insurance policies

$ 903,000,000

873,000,000

Maximum

Debt Instrument [Line Items]

Debt to total capitalization percentage, for each borrower

0.65

Revolving Credit Facility

Debt Instrument [Line Items]

Facility size

$ 9,000,000,000

$ 9,000,000,000

Letters of Credit Outstanding, Amount

18,000,000

June 2017 Three Year Revolving Credit Facility

Debt Instrument [Line Items]

Term (in years)

3 years

3 years

4.25% Convertible Senior notes Due April 2026

Debt Instrument [Line Items]

Interest rate (as a percent)

4.125%

4.25% Convertible Senior notes Due April 2026 | Convertible Debt | Debt Conversion Terms One

Debt Instrument [Line Items]

Trading days (in days) | day

20

Consecutive trading days (in days) | day

30

Debt conversion rate (as a percent)

130%

4.25% Convertible Senior notes Due April 2026 | Convertible Debt | Debt Conversion Terms Two

Debt Instrument [Line Items]

Trading days (in days) | day

5

Consecutive trading days (in days) | day

10

Debt conversion rate (as a percent)

98%

Term Loan Due April 2024

Debt Instrument [Line Items]

Repayments of debt

800,000,000

Duke Energy Term Loan Facility | Line of Credit

Debt Instrument [Line Items]

Term (in years)

2 years

Duke Energy Carolinas

Debt Instrument [Line Items]

Debt issuances

1,000,000,000

2,650,000,000

Current maturities of long-term debt

$ 521,000,000

19,000,000

Duke Energy Carolinas | Maximum

Debt Instrument [Line Items]

Debt to total capitalization percentage, for each borrower

0.65

Duke Energy Carolinas | Revolving Credit Facility

Debt Instrument [Line Items]

Facility size

$ 1,400,000,000

Letters of Credit Outstanding, Amount

4,000,000

Duke Energy Carolinas | First Mortgage Bonds | Subsequent Event

Debt Instrument [Line Items]

Debt issuances

$ 1,100,000,000

Duke Energy Carolinas | January 2025 First Mortgage Loans, Five Year Tranche | First Mortgage Bonds | Subsequent Event

Debt Instrument [Line Items]

Debt issuances

$ 400,000,000

Term (in years)

5 years

Interest rate (as a percent)

4.85%

Duke Energy Carolinas | January 2025 First Mortgage Loans, Ten Year Tranche | First Mortgage Bonds | Subsequent Event

Debt Instrument [Line Items]

Debt issuances

$ 700,000,000

Term (in years)

10 years

Interest rate (as a percent)

5.25%

Duke Energy Carolinas | Maturities Due January 2025 | Subsequent Event

Debt Instrument [Line Items]

Repayments of debt

$ 500,000,000

Duke Energy Carolinas | Duke Energy Term Loan Facility | Line of Credit

Debt Instrument [Line Items]

Facility size

$ 700,000,000

Drawings on credit facility

455,000,000

Facility increase

$ 300,000,000

Duke Energy Carolinas | Duke Energy Term Loan Facility | Line of Credit | Subsequent Event

Debt Instrument [Line Items]

Drawings on credit facility

$ 145,000,000

Parent

Debt Instrument [Line Items]

Debt issuances

4,565,000,000

3,075,000,000

Parent | Line of Credit | Revolving Credit Facility

Debt Instrument [Line Items]

Repayments of debt

$ 1,000,000,000

$ 400,000,000

Facility size

$ 1,400,000,000

$ 1,000,000,000

Parent | 4.25% Convertible Senior notes Due April 2026

Debt Instrument [Line Items]

Debt issuances

$ 1,700,000,000

Debt conversion rate (as a percent)

25%

Common stock, par value (in usd per share) | $ / shares

$ 0.001

Conversion ratio

0.0084131

Parent | Duke Energy Term Loan Facility | Line of Credit

Debt Instrument [Line Items]

Term (in years)

364 days

Repayments of debt

$ 500,000,000

Facility size

$ 700,000,000

Drawings on credit facility

$ 500,000,000

Duke Energy Florida

Debt Instrument [Line Items]

Debt issuances

173,000,000

1,500,000,000

Current maturities of long-term debt

$ 534,000,000

$ 589,000,000

Duke Energy Florida | Maximum

Debt Instrument [Line Items]

Debt to total capitalization percentage, for each borrower

0.65

Duke Energy Florida | Revolving Credit Facility

Debt Instrument [Line Items]

Facility size

$ 875,000,000

Letters of Credit Outstanding, Amount

7,000,000

Duke Energy Florida | Duke Energy Term Loan Facility | Line of Credit

Debt Instrument [Line Items]

Term (in years)

364 days

Facility size

$ 800,000,000

Drawings on credit facility

$ 100,000,000

Facility increase

400,000,000

Duke Energy Florida | Duke Energy Term Loan Facility | Line of Credit | Subsequent Event

Debt Instrument [Line Items]

Drawings on credit facility

700,000,000

Progress Energy

Debt Instrument [Line Items]

Common stock, par value (in usd per share) | $ / shares

$ 0.01

$ 0.01

Current maturities of long-term debt

$ 1,517,000,000

$ 661,000,000

Progress Energy | Maximum

Debt Instrument [Line Items]

Debt to total capitalization percentage, for each borrower

0.65

Progress Energy | Line of Credit | Revolving Credit Facility | Progress Energy

Debt Instrument [Line Items]

Facility size

$ 2,500,000,000

Duke Energy Ohio

Debt Instrument [Line Items]

Debt issuances

$ 650,000,000

$ 750,000,000

Common stock, par value (in usd per share) | $ / shares

$ 8.50

$ 8.50

Current maturities of long-term debt

$ 245,000,000

$ 0

Duke Energy Ohio | Maximum

Debt Instrument [Line Items]

Debt to total capitalization percentage, for each borrower

0.65

Duke Energy Ohio | Revolving Credit Facility

Debt Instrument [Line Items]

Facility size

$ 1,050,000,000

Duke Energy Indiana

Debt Instrument [Line Items]

Debt issuances

300,000,000

500,000,000

Current maturities of long-term debt

$ 4,000,000

4,000,000

Duke Energy Indiana | Maximum

Debt Instrument [Line Items]

Debt to total capitalization percentage, for each borrower

0.65

Duke Energy Indiana | Revolving Credit Facility

Debt Instrument [Line Items]

Facility size

$ 950,000,000

Duke Energy Progress

Debt Instrument [Line Items]

Debt issuances

677,000,000

1,000,000,000

Current maturities of long-term debt

983,000,000

72,000,000

Other loans outstanding against cash surrender value of life insurance policies

$ 32,000,000

32,000,000

Duke Energy Progress | Maximum

Debt Instrument [Line Items]

Debt to total capitalization percentage, for each borrower

0.65

Duke Energy Progress | Revolving Credit Facility

Debt Instrument [Line Items]

Facility size

$ 1,500,000,000

Letters of Credit Outstanding, Amount

1,000,000

Duke Energy Progress | Duke Energy Term Loan Facility | Line of Credit

Debt Instrument [Line Items]

Facility size

250,000,000

Drawings on credit facility

185,000,000

Facility increase

$ 150,000,000

Duke Energy Progress | Duke Energy Term Loan Facility | Line of Credit | Subsequent Event

Debt Instrument [Line Items]

Drawings on credit facility

$ 65,000,000

Piedmont

Debt Instrument [Line Items]

Debt issuances

$ 375,000,000

$ 350,000,000

Common stock, par value (in usd per share) | $ / shares

$ 0

$ 0

Current maturities of long-term debt

$ 205,000,000

$ 40,000,000

Piedmont | Maximum

Debt Instrument [Line Items]

Debt to total capitalization percentage, for each borrower

0.70

Piedmont | Revolving Credit Facility

Debt Instrument [Line Items]

Facility size

$ 950,000,000

Debt and Credit Facilities (S_3

Debt and Credit Facilities (Summary of Debt Issuances) (Details) € in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jan. 31, 2025 USD ($)	Apr. 30, 2024 USD ($)	Apr. 30, 2024 EUR (€)
Debt Instrument [Line Items]
Debt issuances		$ 7,740,000,000	$ 9,825,000,000
Repayments of long-term debt		$ 3,357,000,000	$ 4,737,000,000	$ 4,396,000,000
4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		4.85%
Debt issuances		$ 600,000,000
4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		4.85%
Debt issuances		$ 650,000,000
April 2024 5.648% Notes Due April 2031 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.648%
Debt issuances		$ 815,000,000				$ 815,000,000
June 2024 5.450% Notes Due June 2034 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.45%
Debt issuances		$ 750,000,000
June 2024 5.800% Notes Due June 2054 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.80%
Debt issuances		$ 750,000,000
June 2024 5.900% Notes Due June 2031 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.90%
Debt issuances		$ 80,000,000
June 2024 6.000% Notes Due July 2034 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		6%
Debt issuances		$ 95,000,000
June 2024 6.170% Notes Due July 2039 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		6.17%
Debt issuances		$ 50,000,000
August 2024 5.100% Notes Due February 2035 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.10%
Debt issuances		$ 375,000,000
August 2024 6.450% Notes Due September 2054 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		6.45%
Debt issuances		$ 1,000,000,000
Discount rate (as a percent)		2.588%
Interest rate reset period (in years)		5 years
Percentage of principal		100%
April 2024 5.404% Notes | Secured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)		5.404%
Debt issuances		$ 177,000,000
4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		4.85%
Debt issuances		$ 575,000,000
5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		5.40%
Debt issuances		$ 425,000,000
5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		5.25%
Debt issuances		$ 300,000,000
5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		5.10%
Debt issuances		$ 500,000,000
5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		5.55%
Debt issuances		$ 425,000,000
April 2024 Notes Due April 2074 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)		4.91%
Debt issuances		$ 173,000,000
Maturities Due March 2024
Debt Instrument [Line Items]
Repayments of debt	$ 1,000,000,000
Senior Notes 3.75 Percent Due 2031 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)						3.75%	3.75%
Debt issuances | €							€ 750
Debt maturing April 2024 | Secured Debt
Debt Instrument [Line Items]
Debt repurchased						$ 1,000,000,000
4.125% April 2023 2023 Notes Due April 2026 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)			4.125%
Debt issuances			$ 1,725,000,000
5.400% June 2023 2023 Notes Due June 2023 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)			5.40%
Debt issuances			$ 350,000,000
Sept 2023 5.75% Notes Due Sept 2033 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)			5.75%
Debt issuances			$ 600,000,000
Sept 2023 4.300% Notes Due Sept 2053 | Unsecured Debt
Debt Instrument [Line Items]
Interest rate (as a percent)			6.10%
Debt issuances			$ 750,000,000
4.95% January 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			4.95%
Debt issuances			$ 900,000,000
4.950% June 2023 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			4.95%
Debt issuances			$ 350,000,000
5.400% June 2023 2023 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			5.40%
Debt issuances			$ 500,000,000
4.960% September 2023 Notes Due October 2073 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			4.91%
Debt issuances			$ 200,000,000
November 2023 Notes Due November 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			5.875%
Debt issuances			$ 600,000,000
5.350% January 2023 Notes Due January 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			5.35%
Debt issuances			$ 900,000,000
5.250% March 2023 Notes Due March 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			5.25%
Debt issuances			$ 500,000,000
5.350% March 2023 Notes Due March 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			5.35%
Debt issuances			$ 500,000,000
5.250% March 2023 Notes Due April 2033 (2) | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			5.25%
Debt issuances			$ 375,000,000
5.650% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			5.65%
Debt issuances			$ 375,000,000
5.400% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			5.40%
Debt issuances			$ 500,000,000
November 2023 Notes Due November 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Interest rate (as a percent)			6.20%
Debt issuances			$ 700,000,000
Maturities Due October 2023 (3)
Debt Instrument [Line Items]
Repayments of debt			45,000,000
Maturities Due October 2023
Debt Instrument [Line Items]
Repayments of debt			400,000,000
Maturities Due March 2023
Debt Instrument [Line Items]
Repayments of debt			1,000,000,000
Maturities Due September 2023
Debt Instrument [Line Items]
Repayments of debt			300,000,000
Maturities Due October 2023, Portion
Debt Instrument [Line Items]
Repayments of debt			100,000,000
Maturities Due October 2023 (2)
Debt Instrument [Line Items]
Repayments of debt			300,000,000
Term Loan Due April 2024
Debt Instrument [Line Items]
Repayments of debt			800,000,000
Parent
Debt Instrument [Line Items]
Debt issuances		4,565,000,000	3,075,000,000
Parent | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		600,000,000
Parent | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		650,000,000
Parent | April 2024 5.648% Notes Due April 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		815,000,000
Parent | June 2024 5.450% Notes Due June 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		750,000,000
Parent | June 2024 5.800% Notes Due June 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		750,000,000
Parent | June 2024 5.900% Notes Due June 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Parent | June 2024 6.000% Notes Due July 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Parent | June 2024 6.170% Notes Due July 2039 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Parent | August 2024 5.100% Notes Due February 2035 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Parent | August 2024 6.450% Notes Due September 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		1,000,000,000
Parent | April 2024 5.404% Notes | Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Parent | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Parent | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Parent | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Parent | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Parent | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Parent | April 2024 Notes Due April 2074 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Parent | 4.125% April 2023 2023 Notes Due April 2026 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances			1,725,000,000
Parent | 5.400% June 2023 2023 Notes Due June 2023 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances			0
Parent | Sept 2023 5.75% Notes Due Sept 2033 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances			600,000,000
Parent | Sept 2023 4.300% Notes Due Sept 2053 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances			750,000,000
Parent | 4.95% January 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | 4.950% June 2023 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | 5.400% June 2023 2023 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | 4.960% September 2023 Notes Due October 2073 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | November 2023 Notes Due November 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | 5.350% January 2023 Notes Due January 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | 5.250% March 2023 Notes Due March 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | 5.350% March 2023 Notes Due March 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | 5.250% March 2023 Notes Due April 2033 (2) | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | 5.650% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | 5.400% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Parent | November 2023 Notes Due November 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Carolinas
Debt Instrument [Line Items]
Debt issuances		1,000,000,000	2,650,000,000
Repayments of long-term debt		19,000,000	1,042,000,000	436,000,000
Duke Energy Carolinas | First Mortgage Bonds | Subsequent Event
Debt Instrument [Line Items]
Debt issuances					$ 1,100,000,000
Duke Energy Carolinas | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | April 2024 5.648% Notes Due April 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | June 2024 5.450% Notes Due June 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | June 2024 5.800% Notes Due June 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | June 2024 5.900% Notes Due June 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | June 2024 6.000% Notes Due July 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | June 2024 6.170% Notes Due July 2039 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | August 2024 5.100% Notes Due February 2035 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | August 2024 6.450% Notes Due September 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | April 2024 5.404% Notes | Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		575,000,000
Duke Energy Carolinas | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		425,000,000
Duke Energy Carolinas | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | April 2024 Notes Due April 2074 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Carolinas | 4.95% January 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			900,000,000
Duke Energy Carolinas | 4.950% June 2023 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			350,000,000
Duke Energy Carolinas | 5.400% June 2023 2023 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			500,000,000
Duke Energy Carolinas | 4.960% September 2023 Notes Due October 2073 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Carolinas | November 2023 Notes Due November 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Carolinas | 5.350% January 2023 Notes Due January 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			900,000,000
Duke Energy Carolinas | 5.250% March 2023 Notes Due March 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Carolinas | 5.350% March 2023 Notes Due March 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Carolinas | 5.250% March 2023 Notes Due April 2033 (2) | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Carolinas | 5.650% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Carolinas | 5.400% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Carolinas | November 2023 Notes Due November 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Progress
Debt Instrument [Line Items]
Debt issuances		677,000,000	1,000,000,000
Repayments of long-term debt		72,000,000	369,000,000	645,000,000
Duke Energy Progress | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | April 2024 5.648% Notes Due April 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | June 2024 5.450% Notes Due June 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | June 2024 5.800% Notes Due June 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | June 2024 5.900% Notes Due June 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | June 2024 6.000% Notes Due July 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | June 2024 6.170% Notes Due July 2039 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | August 2024 5.100% Notes Due February 2035 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | August 2024 6.450% Notes Due September 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | April 2024 5.404% Notes | Secured Debt
Debt Instrument [Line Items]
Debt issuances		177,000,000
Duke Energy Progress | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		500,000,000
Duke Energy Progress | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | April 2024 Notes Due April 2074 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Progress | 4.95% January 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Progress | 4.950% June 2023 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Progress | 5.400% June 2023 2023 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Progress | 4.960% September 2023 Notes Due October 2073 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Progress | November 2023 Notes Due November 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Progress | 5.350% January 2023 Notes Due January 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Progress | 5.250% March 2023 Notes Due March 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			500,000,000
Duke Energy Progress | 5.350% March 2023 Notes Due March 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			500,000,000
Duke Energy Progress | 5.250% March 2023 Notes Due April 2033 (2) | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Progress | 5.650% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Progress | 5.400% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Progress | November 2023 Notes Due November 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Florida
Debt Instrument [Line Items]
Debt issuances		173,000,000	1,500,000,000
Repayments of long-term debt		395,000,000	879,000,000	77,000,000
Duke Energy Florida | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | April 2024 5.648% Notes Due April 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | June 2024 5.450% Notes Due June 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | June 2024 5.800% Notes Due June 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | June 2024 5.900% Notes Due June 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | June 2024 6.000% Notes Due July 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | June 2024 6.170% Notes Due July 2039 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | August 2024 5.100% Notes Due February 2035 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | August 2024 6.450% Notes Due September 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | April 2024 5.404% Notes | Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Florida | April 2024 Notes Due April 2074 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		173,000,000
Duke Energy Florida | 4.960% September 2023 Notes Due October 2073 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			200,000,000
Duke Energy Florida | November 2023 Notes Due November 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			600,000,000
Duke Energy Florida | November 2023 Notes Due November 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			700,000,000
Piedmont
Debt Instrument [Line Items]
Debt issuances		375,000,000	350,000,000
Repayments of long-term debt		40,000,000	45,000,000	0
Piedmont | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | April 2024 5.648% Notes Due April 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | June 2024 5.450% Notes Due June 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | June 2024 5.800% Notes Due June 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | June 2024 5.900% Notes Due June 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | June 2024 6.000% Notes Due July 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | June 2024 6.170% Notes Due July 2039 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | August 2024 5.100% Notes Due February 2035 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		375,000,000
Piedmont | August 2024 6.450% Notes Due September 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | April 2024 5.404% Notes | Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | April 2024 Notes Due April 2074 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Piedmont | 4.125% April 2023 2023 Notes Due April 2026 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | 5.400% June 2023 2023 Notes Due June 2023 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances			350,000,000
Piedmont | 4.95% January 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | 4.950% June 2023 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | 5.400% June 2023 2023 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | 4.960% September 2023 Notes Due October 2073 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | November 2023 Notes Due November 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | 5.350% January 2023 Notes Due January 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | 5.250% March 2023 Notes Due March 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | 5.350% March 2023 Notes Due March 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | 5.250% March 2023 Notes Due April 2033 (2) | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | 5.650% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | 5.400% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Piedmont | November 2023 Notes Due November 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Ohio
Debt Instrument [Line Items]
Debt issuances		650,000,000	750,000,000
Repayments of long-term debt		0	500,000,000	0
Duke Energy Ohio | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | April 2024 5.648% Notes Due April 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | June 2024 5.450% Notes Due June 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | June 2024 5.800% Notes Due June 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | June 2024 5.900% Notes Due June 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		80,000,000
Duke Energy Ohio | June 2024 6.000% Notes Due July 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		95,000,000
Duke Energy Ohio | June 2024 6.170% Notes Due July 2039 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		50,000,000
Duke Energy Ohio | August 2024 5.100% Notes Due February 2035 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | August 2024 6.450% Notes Due September 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | April 2024 5.404% Notes | Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		425,000,000
Duke Energy Ohio | April 2024 Notes Due April 2074 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Ohio | 5.250% March 2023 Notes Due April 2033 (2) | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			375,000,000
Duke Energy Ohio | 5.650% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			375,000,000
Duke Energy Indiana
Debt Instrument [Line Items]
Debt issuances		300,000,000	500,000,000
Repayments of long-term debt		4,000,000	303,000,000	$ 84,000,000
Duke Energy Indiana | 4.85% January 2024 2024 Notes Due January 2027 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | 4.85% January 2024 2024 Notes Due January 2029 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | April 2024 5.648% Notes Due April 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | June 2024 5.450% Notes Due June 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | June 2024 5.800% Notes Due June 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | June 2024 5.900% Notes Due June 2031 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | June 2024 6.000% Notes Due July 2034 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | June 2024 6.170% Notes Due July 2039 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | August 2024 5.100% Notes Due February 2035 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | August 2024 6.450% Notes Due September 2054 | Unsecured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | April 2024 5.404% Notes | Secured Debt
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | 4.85% January 2024 Notes Due January 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | 5.40% January 2024 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | 5.25% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		300,000,000
Duke Energy Indiana | 5.10% March 2024 Notes Due March 2034 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | 5.55% March 2024 Notes Due March 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		0
Duke Energy Indiana | April 2024 Notes Due April 2074 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances		$ 0
Duke Energy Indiana | 4.95% January 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Indiana | 4.950% June 2023 2023 Notes Due January 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Indiana | 5.400% June 2023 2023 Notes Due January 2054 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Indiana | 4.960% September 2023 Notes Due October 2073 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Indiana | November 2023 Notes Due November 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Indiana | 5.350% January 2023 Notes Due January 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Indiana | 5.250% March 2023 Notes Due March 2033 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Indiana | 5.350% March 2023 Notes Due March 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Indiana | 5.250% March 2023 Notes Due April 2033 (2) | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Indiana | 5.650% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			0
Duke Energy Indiana | 5.400% March 2023 Notes Due April 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			500,000,000
Duke Energy Indiana | November 2023 Notes Due November 2053 | First Mortgage Bonds
Debt Instrument [Line Items]
Debt issuances			$ 0

Debt and Credit Facilities (Sch

Debt and Credit Facilities (Schedule of Line of Credit Facilities) (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Line of Credit Facility [Line Items]
Tax-exempt bonds	$ (1,331,000,000)	$ (1,331,000,000)
Duke Energy Progress
Line of Credit Facility [Line Items]
Tax-exempt bonds	(500,000,000)	(500,000,000)
Duke Energy Ohio
Line of Credit Facility [Line Items]
Tax-exempt bonds	(77,000,000)	(77,000,000)
Duke Energy Indiana
Line of Credit Facility [Line Items]
Tax-exempt bonds	(352,000,000)	$ (352,000,000)
Revolving Credit Facility
Line of Credit Facility [Line Items]
Facility size	9,000,000,000		$ 9,000,000,000
Commercial paper	(3,143,000,000)
Outstanding letters of credit	(18,000,000)
Tax-exempt bonds	(81,000,000)
Available capacity	5,758,000,000
Revolving Credit Facility | Duke Energy Carolinas
Line of Credit Facility [Line Items]
Facility size	1,400,000,000
Commercial paper	(300,000,000)
Outstanding letters of credit	(4,000,000)
Available capacity	1,096,000,000
Revolving Credit Facility | Duke Energy Progress
Line of Credit Facility [Line Items]
Facility size	1,500,000,000
Commercial paper	(736,000,000)
Outstanding letters of credit	(1,000,000)
Available capacity	763,000,000
Revolving Credit Facility | Duke Energy Florida
Line of Credit Facility [Line Items]
Facility size	875,000,000
Commercial paper	(448,000,000)
Outstanding letters of credit	(7,000,000)
Available capacity	420,000,000
Revolving Credit Facility | Duke Energy Ohio
Line of Credit Facility [Line Items]
Facility size	1,050,000,000
Commercial paper	(182,000,000)
Available capacity	868,000,000
Revolving Credit Facility | Duke Energy Indiana
Line of Credit Facility [Line Items]
Facility size	950,000,000
Commercial paper	(160,000,000)
Tax-exempt bonds	(81,000,000)
Available capacity	709,000,000
Revolving Credit Facility | Piedmont
Line of Credit Facility [Line Items]
Facility size	950,000,000
Commercial paper	(709,000,000)
Available capacity	241,000,000
Revolving Credit Facility | Parent Company
Line of Credit Facility [Line Items]
Facility size	2,275,000,000
Commercial paper	(608,000,000)
Outstanding letters of credit	(6,000,000)
Available capacity	1,661,000,000
Revolving Credit Facility | Parent Company | Proceeds Loaned To Subsidiary Registrants
Line of Credit Facility [Line Items]
Commercial paper	$ (625,000,000)

Guarantees and Indemnificatio_2

Guarantees and Indemnifications (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Noncurrent Liabilities
Guarantor Obligations [Line Items]
Face value of guarantees	$ 2	$ 2
Letters of credit
Guarantor Obligations [Line Items]
Maximum potential amount of future payments associated with guarantees	339
Performance guarantee | Customers and other third parties
Guarantor Obligations [Line Items]
Maximum potential amount of future payments associated with guarantees	26
Performance guarantee | Spectra Capital
Guarantor Obligations [Line Items]
Maximum potential amount of future payments associated with guarantees	$ 25

Joint Ownership of Generating_3

Joint Ownership of Generating and Transmission Facilities (Schedule Joint Ownership of Generating and Transmission Facilities) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Duke Energy Carolinas | Catawba (units 1 and 2)
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest (as a percent)	19.25%
Property, plant, and equipment	$ 1,047
Accumulated depreciation	594
Construction work in progress	$ 30
Duke Energy Carolinas | W.S. Lee CC
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest (as a percent)	87.27%
Property, plant, and equipment	$ 654
Accumulated depreciation	118
Construction work in progress	$ 6
Duke Energy Indiana | Gibson (unit 5)
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest (as a percent)	50.05%
Property, plant, and equipment	$ 400
Accumulated depreciation	266
Construction work in progress	$ 5
Duke Energy Indiana | Vermillion
Jointly Owned Utility Plant Interests [Line Items]
Ownership interest (as a percent)	62.50%
Property, plant, and equipment	$ 184
Accumulated depreciation	124
Duke Energy Indiana | Transmission and local facilities
Jointly Owned Utility Plant Interests [Line Items]
Property, plant, and equipment	7,771
Accumulated depreciation	1,654
Construction work in progress	$ 222

Asset Retirement Obligations (R

Asset Retirement Obligations (Recorded on the Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	$ 9,992	$ 9,156	$ 12,728
Less: Current portion	650	596
Total noncurrent asset retirement obligation	9,342	8,560
Decommissioning of nuclear power facilities
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	4,493
Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	5,173
Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	326
Duke Energy Carolinas
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	3,990	4,013	5,382
Less: Current portion	247	224
Total noncurrent asset retirement obligation	3,743	3,789
Duke Energy Carolinas | Decommissioning of nuclear power facilities
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	2,050
Duke Energy Carolinas | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	1,867
Duke Energy Carolinas | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	73
Progress Energy
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	4,548	4,145	6,181
Less: Current portion	231	245
Total noncurrent asset retirement obligation	4,317	3,900
Progress Energy | Decommissioning of nuclear power facilities
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	2,425
Progress Energy | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	1,993
Progress Energy | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	130
Duke Energy Progress
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	4,334	3,870	5,823
Less: Current portion	230	244
Total noncurrent asset retirement obligation	4,104	3,626
Duke Energy Progress | Decommissioning of nuclear power facilities
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	2,318
Duke Energy Progress | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	1,975
Duke Energy Progress | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	41
Duke Energy Florida
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	214	275	358
Less: Current portion	1	1
Total noncurrent asset retirement obligation	213	274
Duke Energy Florida | Decommissioning of nuclear power facilities
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	107
Duke Energy Florida | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	18
Duke Energy Florida | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	89
Duke Energy Ohio
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	139	136	154
Less: Current portion	8	6
Total noncurrent asset retirement obligation	131	130
Duke Energy Ohio | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	72
Duke Energy Ohio | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	67
Duke Energy Indiana
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	1,268	809	951
Less: Current portion	164	120
Total noncurrent asset retirement obligation	1,104	689
Duke Energy Indiana | Closure of ash impoundments
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	1,241
Duke Energy Indiana | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	27
Piedmont
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	29	26	$ 26
Total noncurrent asset retirement obligation	29	$ 26
Piedmont | Other
Asset Retirement Obligation [Line Items]
Total asset retirement obligation	$ 29

Asset Retirement Obligations (N

Asset Retirement Obligations (NDTF Information) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
NDTF Information [Abstract]
Decommissioning costs	$ 9,031
Legally restricted NDTF investments, fair value	10,044	$ 8,851
Duke Energy Carolinas
NDTF Information [Abstract]
Decommissioning costs	4,439
Legally restricted NDTF investments, fair value	5,687	5,002
Duke Energy Progress
NDTF Information [Abstract]
Decommissioning costs	4,477
Legally restricted NDTF investments, fair value	4,357	3,849
Duke Energy Florida
NDTF Information [Abstract]
Decommissioning costs	115
Progress Energy
NDTF Information [Abstract]
Decommissioning costs	4,592
Legally restricted NDTF investments, fair value	$ 4,357	$ 3,849

Asset Retirement Obligations _2

Asset Retirement Obligations (Narrative) (Details)	12 Months Ended
	Dec. 31, 2024
Nuclear Regulatory Commission
Asset Retirement Obligation [Line Items]
Operating license extension (in years)	20 years

Asset Retirement Obligations _3

Asset Retirement Obligations (Rollforward) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Asset Retirement Obligation [Line Items]
Beginning Balance	$ 9,156	$ 12,728
Accretion expense	434	523
Liabilities settled	(634)	(758)
Liabilities incurred in the current year	20	29
Revisions in estimates of cash flows	1,016	(3,366)
Ending Balance	9,992	9,156
Duke Energy Carolinas
Asset Retirement Obligation [Line Items]
Beginning Balance	4,013	5,382
Accretion expense	183	254
Liabilities settled	(212)	(256)
Liabilities incurred in the current year	8	3
Revisions in estimates of cash flows	(2)	(1,370)
Ending Balance	3,990	4,013
Progress Energy
Asset Retirement Obligation [Line Items]
Beginning Balance	4,145	6,181
Accretion expense	199	237
Liabilities settled	(321)	(379)
Liabilities incurred in the current year	12	21
Revisions in estimates of cash flows	513	(1,915)
Ending Balance	4,548	4,145
Duke Energy Progress
Asset Retirement Obligation [Line Items]
Beginning Balance	3,870	5,823
Accretion expense	190	225
Liabilities settled	(232)	(292)
Liabilities incurred in the current year		6
Revisions in estimates of cash flows	506	(1,892)
Ending Balance	4,334	3,870
Duke Energy Florida
Asset Retirement Obligation [Line Items]
Beginning Balance	275	358
Accretion expense	9	12
Liabilities settled	(89)	(87)
Liabilities incurred in the current year	12	15
Revisions in estimates of cash flows	7	(23)
Ending Balance	214	275
Duke Energy Ohio
Asset Retirement Obligation [Line Items]
Beginning Balance	136	154
Accretion expense	7	7
Liabilities settled	(7)	(15)
Liabilities incurred in the current year		1
Revisions in estimates of cash flows	3	(11)
Ending Balance	139	136
Duke Energy Indiana
Asset Retirement Obligation [Line Items]
Beginning Balance	809	951
Accretion expense	49	33
Liabilities settled	(94)	(108)
Liabilities incurred in the current year		4
Revisions in estimates of cash flows	504	(71)
Ending Balance	1,268	809
Piedmont
Asset Retirement Obligation [Line Items]
Beginning Balance	26	26
Accretion expense	2	1
Revisions in estimates of cash flows	1	(1)
Ending Balance	$ 29	$ 26

Property, Plant and Equipment_2

Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Average remaining useful life (in years)	13 years	14 years
Land	$ 2,569	$ 2,345
Other buildings and improvements	6,855	6,922
Equipment	3,863	3,409
Construction in process	7,850	8,372
Total property, plant and equipment	180,806	171,353
Total net property, plant and equipment	$ 123,303	$ 115,315
Other, estimated useful life, in years	10 years	12 years
Finance leases, gross	$ 670	$ 697
Accumulated amortization of finance leases		(3)
Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	3,518	3,303
Accumulated depreciation and amortization	(1,824)	(1,793)
Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	$ (55,535)	$ (54,323)
Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Average remaining useful life (in years)	37 years	40 years
Plant - transmission and distribution	$ 137,836	$ 129,985
Regulated | Natural gas transmission and distribution
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Average remaining useful life (in years)	58 years	57 years
Plant - transmission and distribution	$ 15,333	$ 14,130
Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Average remaining useful life (in years)	41 years	42 years
Other buildings and improvements	$ 2,982	$ 2,887
Nonregulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(1,968)	(1,715)
Accumulated amortization of finance leases	(25)	(7)
Duke Energy Carolinas
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	617	581
Other buildings and improvements	1,227	1,455
Equipment	997	870
Construction in process	2,735	2,578
Total property, plant and equipment	58,382	56,670
Total net property, plant and equipment	39,292	36,774
Finance leases, gross	336	335
Accumulated amortization of finance leases	(84)	(67)
Duke Energy Carolinas | Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	2,003	1,866
Accumulated depreciation and amortization	(1,010)	(991)
Duke Energy Carolinas | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(19,090)	(19,896)
Duke Energy Carolinas | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	49,547	48,107
Duke Energy Carolinas | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	1,256	1,213
Progress Energy
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	1,134	1,012
Other buildings and improvements	1,953	2,037
Equipment	1,252	1,104
Construction in process	3,657	3,941
Total property, plant and equipment	72,560	67,644
Total net property, plant and equipment	48,974	45,344
Finance leases, gross	620	615
Accumulated amortization of finance leases	(159)	(292)
Progress Energy | Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	1,515	1,437
Accumulated depreciation and amortization	(814)	(802)
Progress Energy | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(23,586)	(22,300)
Progress Energy | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	62,351	57,436
Progress Energy | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	698	677
Duke Energy Progress
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	535	502
Other buildings and improvements	1,349	1,481
Equipment	753	654
Construction in process	1,884	1,661
Total property, plant and equipment	42,060	39,283
Total net property, plant and equipment	26,130	24,056
Finance leases, gross	512	552
Accumulated amortization of finance leases		(119)
Duke Energy Progress | Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	1,515	1,437
Accumulated depreciation and amortization	(814)	(802)
Duke Energy Progress | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(15,930)	(15,227)
Duke Energy Progress | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	35,633	33,171
Duke Energy Progress | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	391	377
Duke Energy Florida
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	599	510
Other buildings and improvements	594	548
Equipment	499	450
Construction in process	1,773	2,280
Total property, plant and equipment	30,490	28,353
Total net property, plant and equipment	22,840	21,286
Finance leases, gross	108	63
Accumulated amortization of finance leases		(173)
Duke Energy Florida | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(7,650)	(7,067)
Duke Energy Florida | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	26,718	24,265
Duke Energy Florida | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	307	300
Duke Energy Ohio
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	258	242
Other buildings and improvements	426	410
Equipment	542	474
Construction in process	385	427
Total property, plant and equipment	13,918	13,210
Total net property, plant and equipment	10,244	9,759
Duke Energy Ohio | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(3,674)	(3,451)
Duke Energy Ohio | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	7,634	7,243
Duke Energy Ohio | Regulated | Natural gas transmission and distribution
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	4,255	3,993
Duke Energy Ohio | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	418	421
Duke Energy Indiana
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	144	133
Other buildings and improvements	254	344
Equipment	490	442
Construction in process	406	427
Total property, plant and equipment	19,970	18,900
Total net property, plant and equipment	13,122	12,399
Finance leases, gross	10	10
Accumulated amortization of finance leases	(4)	(4)
Duke Energy Indiana | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(6,848)	(6,501)
Duke Energy Indiana | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	18,304	17,199
Duke Energy Indiana | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	372	355
Piedmont
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	391	352
Other buildings and improvements	498	365
Equipment	170	143
Construction in process	405	690
Total property, plant and equipment	12,780	11,908
Total net property, plant and equipment	10,348	9,649
Piedmont | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(2,432)	(2,259)
Piedmont | Regulated | Natural gas transmission and distribution
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	11,078	10,137
Piedmont | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	$ 238	$ 221

Property, Plant and Equipment_3

Property, Plant and Equipment (Schedule of Capitalized Interest) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Capitalized interest	$ 201	$ 201	$ 118
Duke Energy Carolinas
Property, Plant and Equipment [Line Items]
Capitalized interest	61	62	50
Progress Energy
Property, Plant and Equipment [Line Items]
Capitalized interest	57	41	26
Duke Energy Progress
Property, Plant and Equipment [Line Items]
Capitalized interest	52	35	19
Duke Energy Florida
Property, Plant and Equipment [Line Items]
Capitalized interest	5	6	7
Duke Energy Ohio
Property, Plant and Equipment [Line Items]
Capitalized interest	14	16	14
Duke Energy Indiana
Property, Plant and Equipment [Line Items]
Capitalized interest	13	21
PISCC amortization			(3)
Piedmont
Property, Plant and Equipment [Line Items]
Capitalized interest	$ 8	$ 8	$ 4

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Line Items]
Goodwill	$ 19,303,000,000	$ 19,303,000,000
Goodwill accumulated impairment loss	0	0
Impairment charges	0
Electric Utilities and Infrastructure
Goodwill [Line Items]
Goodwill	17,400,000,000	17,400,000,000
Gas Utilities and Infrastructure
Goodwill [Line Items]
Goodwill	1,900,000,000	1,900,000,000
Duke Energy Ohio
Goodwill [Line Items]
Goodwill	920,000,000	920,000,000
Goodwill accumulated impairment loss	216,000,000	216,000,000
Duke Energy Ohio | Electric Utilities and Infrastructure
Goodwill [Line Items]
Goodwill	596,000,000	596,000,000
Duke Energy Ohio | Gas Utilities and Infrastructure
Goodwill [Line Items]
Goodwill	324,000,000	324,000,000
Progress Energy
Goodwill [Line Items]
Goodwill	3,655,000,000	3,655,000,000
Progress Energy | Electric Utilities and Infrastructure
Goodwill [Line Items]
Goodwill accumulated impairment loss	0
Piedmont
Goodwill [Line Items]
Goodwill	49,000,000	$ 49,000,000
Piedmont | Gas Utilities and Infrastructure
Goodwill [Line Items]
Goodwill accumulated impairment loss	$ 0

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Schedule of Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	$ 296	$ 296
Total intangible assets, net	277	282
Emission allowances
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	8	8
Renewable energy certificates
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	241	232
Other
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	47	56
Accumulated amortization	(19)	(14)
Duke Energy Carolinas
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	103	97
Total intangible assets, net	103	97
Duke Energy Carolinas | Renewable energy certificates
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	103	97
Progress Energy
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	146	143
Total intangible assets, net	143	140
Progress Energy | Emission allowances
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	5	5
Progress Energy | Renewable energy certificates
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	136	133
Progress Energy | Other
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	5	5
Accumulated amortization	(3)	(3)
Duke Energy Progress
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	139	136
Total intangible assets, net	139	136
Duke Energy Progress | Emission allowances
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	2	2
Duke Energy Progress | Renewable energy certificates
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	136	133
Duke Energy Progress | Other
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	1	1
Duke Energy Florida
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	7	6
Total intangible assets, net	4	3
Duke Energy Florida | Emission allowances
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	3	3
Duke Energy Florida | Other
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	4	3
Accumulated amortization	(3)	(3)
Duke Energy Ohio
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	2	2
Total intangible assets, net	2	2
Duke Energy Ohio | Renewable energy certificates
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	2	2
Duke Energy Indiana
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	2	2
Total intangible assets, net	2	2
Duke Energy Indiana | Emission allowances
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	2	2
Piedmont
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	22	22
Total intangible assets, net	13	16
Piedmont | Other
Finite-Lived Intangible Assets, Net [Abstract]
Total gross carrying amounts	22	22
Accumulated amortization	$ (9)	$ (6)

Investments in Unconsolidated_3

Investments in Unconsolidated Affiliates (Investments in Equity Method Unconsolidated Affiliates) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments In Unconsolidated Affiliates [Line Items]
Investments	$ 353	$ 492
Equity in (losses) earnings of unconsolidated affiliates	(9)	113	$ 113
Electric Utilities and Infrastructure
Investments In Unconsolidated Affiliates [Line Items]
Investments	28	97
Equity in (losses) earnings of unconsolidated affiliates	(11)	7	7
Gas Utilities and Infrastructure
Investments In Unconsolidated Affiliates [Line Items]
Investments	186	259
Equity in (losses) earnings of unconsolidated affiliates	(48)	40	21
Other
Investments In Unconsolidated Affiliates [Line Items]
Investments	139	136
Equity in (losses) earnings of unconsolidated affiliates	$ 50	$ 66	$ 85

Investments in Unconsolidated_4

Investments in Unconsolidated Affiliates (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments In Unconsolidated Affiliates [Line Items]
Distributions from equity investments	$ 66	$ 50	$ 111
Distributions from equity investments, return of capital	$ 25	16	6
Electric Utilities and Infrastructure | DATC
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest (as a percent)	50%
Pretax charge	$ 15
Electric Utilities and Infrastructure | Pioneer
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest (as a percent)	50%
Gas Utilities and Infrastructure | Sabal Trail
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest (as a percent)	7.50%
Gas Utilities and Infrastructure | SustainRNG
Investments In Unconsolidated Affiliates [Line Items]
Pretax charge	$ 54
Other | NMC
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest (as a percent)	17.50%
Board representation and voting rights, ownership interest (as a percent)	25%
Piedmont
Investments In Unconsolidated Affiliates [Line Items]
Distributions from equity investments	$ 9	9	$ 31
Distributions from equity investments, return of capital	$ 2	$ 1
Piedmont | Gas Utilities and Infrastructure | Cardinal
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest (as a percent)	21.49%
Piedmont | Gas Utilities and Infrastructure | Pine Needle
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest (as a percent)	45%
Piedmont | Gas Utilities and Infrastructure | Hardy Storage
Investments In Unconsolidated Affiliates [Line Items]
Ownership interest (as a percent)	50%

Related Party Transactions (Oth

Related Party Transactions (Other Revenue and Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	$ 22,457	$ 22,042	$ 22,778
Duke Energy Carolinas
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	7,136	6,255	5,799
Duke Energy Carolinas | Corporate governance and shared service expenses | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	812	823	838
Duke Energy Carolinas | Indemnification coverages | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	44	34	28
Duke Energy Carolinas | Joint Dispatch Agreement (JDA) revenue | Duke Energy Progress
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	187	177	600
Related party transaction, other revenues from transactions with related party	35	34	109
Duke Energy Carolinas | Intercompany natural gas transactions | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	12	11	12
Progress Energy
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	10,234	10,485	10,297
Progress Energy | Corporate governance and shared service expenses | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	709	736	818
Progress Energy | Indemnification coverages | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	57	47	43
Progress Energy | Joint Dispatch Agreement (JDA) revenue | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	35	34	109
Related party transaction, other revenues from transactions with related party	187	177	600
Progress Energy | Intercompany natural gas transactions | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	75	75	76
Duke Energy Progress
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	5,316	5,041	5,351
Duke Energy Progress | Corporate governance and shared service expenses | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	426	434	469
Duke Energy Progress | Indemnification coverages | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	23	20	20
Duke Energy Progress | Joint Dispatch Agreement (JDA) revenue | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	35	34	109
Related party transaction, other revenues from transactions with related party	187	177	600
Duke Energy Progress | Intercompany natural gas transactions | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	75	75	76
Duke Energy Florida
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	4,898	5,426	4,933
Duke Energy Florida | Corporate governance and shared service expenses | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	283	302	349
Duke Energy Florida | Indemnification coverages | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	34	27	23
Duke Energy Ohio
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	1,968	1,983	2,124
Duke Energy Ohio | Corporate governance and shared service expenses | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	304	294	334
Duke Energy Ohio | Indemnification coverages | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	6	5	5
Duke Energy Indiana
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	2,361	2,655	3,656
Duke Energy Indiana | Corporate governance and shared service expenses | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	355	365	447
Duke Energy Indiana | Indemnification coverages | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	10	8	8
Piedmont
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	1,098	1,066	1,680
Piedmont | Corporate governance and shared service expenses | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	166	149	155
Piedmont | Indemnification coverages | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	4	4	3
Piedmont | Intercompany natural gas transactions | Related Party
Related Party Transaction [Line Items]
Related party transaction, other revenues from transactions with related party	87	86	88
Piedmont | Natural gas storage and transportation costs | Related Party
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	$ 23	$ 24	$ 23

Related Party Transactions (Int

Related Party Transactions (Intercompany Income Taxes) (Details) - Related Party - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Duke Energy Carolinas
Related Party Transaction [Line Items]
Intercompany income tax payable	$ 419	$ 81
Progress Energy
Related Party Transaction [Line Items]
Intercompany income tax payable	169	92
Duke Energy Progress
Related Party Transaction [Line Items]
Intercompany income tax payable	315	94
Duke Energy Florida
Related Party Transaction [Line Items]
Intercompany income tax receivable	154
Intercompany income tax payable		114
Duke Energy Ohio
Related Party Transaction [Line Items]
Intercompany income tax receivable		91
Intercompany income tax payable	43
Duke Energy Indiana
Related Party Transaction [Line Items]
Intercompany income tax receivable		53
Intercompany income tax payable	110
Piedmont
Related Party Transaction [Line Items]
Intercompany income tax payable	$ 43	$ 57

Derivatives and Hedging (Notion

Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details) Mcf in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) GWh Mcf	Dec. 31, 2023 USD ($) GWh Mcf
Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 6,027	$ 5,027
Interest Rate Contracts | Designated contracts | Cash flow hedges
Derivative [Line Items]
Pay Notional	2,825	2,300
Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 3,202	$ 2,727
Commodity contracts | Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | GWh	12,229	13,608
Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	779	846
Duke Energy Carolinas | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 1,150	$ 1,050
Duke Energy Carolinas | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 1,150	$ 1,050
Duke Energy Carolinas | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	276	279
Progress Energy | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 1,775	$ 1,250
Progress Energy | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 1,775	$ 1,250
Progress Energy | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	246	274
Duke Energy Progress | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 1,125	$ 925
Duke Energy Progress | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 1,125	$ 925
Duke Energy Progress | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	246	274
Duke Energy Florida | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 650	$ 325
Duke Energy Florida | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	650	325
Duke Energy Ohio | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	27	27
Duke Energy Ohio | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 27	$ 27
Duke Energy Ohio | Commodity contracts | Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | GWh	1,287	1,616
Duke Energy Indiana | Interest Rate Contracts
Derivative [Line Items]
Pay Notional	$ 250	$ 400
Duke Energy Indiana | Interest Rate Contracts | Undesignated contracts
Derivative [Line Items]
Pay Notional	$ 250	$ 400
Duke Energy Indiana | Commodity contracts | Electricity (GWh)
Derivative [Line Items]
Notional amount, energy measure, electricity (in GWh) | GWh	10,942	11,992
Duke Energy Indiana | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	32	30
Piedmont | Commodity contracts | Natural gas (millions of Dth)
Derivative [Line Items]
Notional amount, volume of natural gas (in millions of Dth) | Mcf	225	263

Derivatives and Hedging (Foreig

Derivatives and Hedging (Foreign Exchange Risk) (Details) - Foreign Currency Contracts - Designated contracts € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 EUR (€)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Pay Notional	$ 1,997
Receive notional | €				€ 1,850
Fair value gain (loss)	(113)	$ 32	$ (5)
Senior Notes, 3.10% Due June 2028
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Pay Notional	$ 645
Pay rate (as a percent)	4.75%			4.75%
Receive notional | €				€ 600
Receive rate (as a percent)	0.0310			0.0310
Fair value gain (loss)	$ (41)	17	(3)
Senior Notes, 3.85% Due June 2034
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Pay Notional	$ 537
Pay rate (as a percent)	5.31%			5.31%
Receive notional | €				€ 500
Receive rate (as a percent)	0.0385			0.0385
Fair value gain (loss)	$ (34)	$ 15	$ (2)
Senior Notes, 3.75% Due April 2031
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Pay Notional	$ 815
Pay rate (as a percent)	5.65%			5.65%
Receive notional | €				€ 750
Receive rate (as a percent)	0.0375			0.0375
Fair value gain (loss)	$ (38)

Derivatives and Hedging (Locati

Derivatives and Hedging (Location and Fair Value Amounts of Derivatives Reflected in the Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Total Derivative Assets	$ 434	$ 189
Total Derivative Liabilities	319	729
Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	267	61
Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	167	128
Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	145	409
Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	174	320
Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	109	82
Total Derivative Liabilities	242	609
Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	320	63
Total Derivative Liabilities	3	103
Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	74	17
Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	5	44
Foreign Currency Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	5
Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	108	31
Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	52	17
Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		25
Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		26
Designated as Hedging Instruments | Foreign Currency Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	35
Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	39
Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	49	25
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	60	57
Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	108	354
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	134	255
Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	110	5
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	50
Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	2	13
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1	39
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent
Derivatives, Fair Value [Line Items]
Total Derivative Assets		10
Not Designated as Hedging Instruments | Foreign Currency Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		17
Not Designated as Hedging Instruments | Foreign Currency Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets		44
Duke Energy Carolinas
Derivatives, Fair Value [Line Items]
Total Derivative Assets	94	35
Total Derivative Liabilities	88	260
Duke Energy Carolinas | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	39	6
Duke Energy Carolinas | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	55	29
Duke Energy Carolinas | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	57	179
Duke Energy Carolinas | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	31	81
Duke Energy Carolinas | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	49	27
Total Derivative Liabilities	88	244
Duke Energy Carolinas | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	45	8
Total Derivative Liabilities		16
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	20	1
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	29	26
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	57	177
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	31	67
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	19	5
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	26
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		2
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		14
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent
Derivatives, Fair Value [Line Items]
Total Derivative Assets		3
Progress Energy
Derivatives, Fair Value [Line Items]
Total Derivative Assets	127	34
Total Derivative Liabilities	58	234
Progress Energy | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	72	3
Progress Energy | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	55	31
Progress Energy | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	34	149
Progress Energy | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	24	85
Progress Energy | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	49	34
Total Derivative Liabilities	56	199
Progress Energy | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	78
Total Derivative Liabilities	2	35
Progress Energy | Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		0
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	17	3
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	32	31
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	32	138
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	24	61
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	55
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	23
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	2	11
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		24
Duke Energy Progress
Derivatives, Fair Value [Line Items]
Total Derivative Assets	109	32
Total Derivative Liabilities	57	219
Duke Energy Progress | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	61	1
Duke Energy Progress | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	48	31
Duke Energy Progress | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	33	149
Duke Energy Progress | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	24	70
Duke Energy Progress | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	49	32
Total Derivative Liabilities	56	199
Duke Energy Progress | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	60
Total Derivative Liabilities	1	20
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	17	1
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	32	31
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	32	138
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	24	61
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	44
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	16
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1	11
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		9
Duke Energy Florida
Derivatives, Fair Value [Line Items]
Total Derivative Assets	18	2
Total Derivative Liabilities	1	15
Duke Energy Florida | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	11	2
Duke Energy Florida | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	7
Duke Energy Florida | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1
Duke Energy Florida | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		15
Duke Energy Florida | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets		2
Duke Energy Florida | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	18
Total Derivative Liabilities	1	15
Duke Energy Florida | Foreign Currency Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		0
Duke Energy Florida | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets		2
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	11
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	7
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities		15
Duke Energy Ohio
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Total Derivative Liabilities	1	1
Duke Energy Ohio | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Duke Energy Ohio | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1	1
Duke Energy Ohio | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Duke Energy Ohio | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1	1
Duke Energy Ohio | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Duke Energy Ohio | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	1	1
Duke Energy Indiana
Derivatives, Fair Value [Line Items]
Total Derivative Assets	44	25
Total Derivative Liabilities	3	18
Duke Energy Indiana | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	44	18
Duke Energy Indiana | Noncurrent assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets		7
Duke Energy Indiana | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	3	18
Duke Energy Indiana | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	8	18
Total Derivative Liabilities	3	18
Duke Energy Indiana | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	36	7
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	8	18
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	3	18
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	36
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent
Derivatives, Fair Value [Line Items]
Total Derivative Assets		7
Piedmont
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Total Derivative Liabilities	94	147
Piedmont | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Piedmont | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	16	20
Piedmont | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	78	127
Piedmont | Commodity Contracts
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Total Derivative Liabilities	94	147
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current Assets
Derivatives, Fair Value [Line Items]
Total Derivative Assets	1	1
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	16	20
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total Derivative Liabilities	$ 78	$ 127

Derivatives and Hedging (Schedu

Derivatives and Hedging (Schedule of Offsetting Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 434	$ 189
Net amounts presented in Current Assets: Other	238	59
Net amounts presented in Other Noncurrent Assets: Other	130	91
Foreign Currency Contracts
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	5	44
Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	267	61
Offset	$ (29)	$ (2)
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Current Assets: Other	Current Assets: Other
Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 167	$ 128
Offset	$ (37)	$ (37)
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other (including amounts related to VIEs)	Other (including amounts related to VIEs)
Noncurrent assets | Foreign Currency Contracts
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 5
Duke Energy Carolinas
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	94	$ 35
Net amounts presented in Current Assets: Other	24	5
Net amounts presented in Other Noncurrent Assets: Other	36	15
Duke Energy Carolinas | Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	39	6
Offset	(15)	(1)
Duke Energy Carolinas | Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	55	29
Offset	(19)	(14)
Progress Energy
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	127	34
Net amounts presented in Current Assets: Other	58	2
Net amounts presented in Other Noncurrent Assets: Other	38	9
Progress Energy | Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	72	3
Offset	(14)	(1)
Progress Energy | Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	55	31
Offset	(17)	(22)
Duke Energy Progress
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	109	32
Net amounts presented in Current Assets: Other	47
Net amounts presented in Other Noncurrent Assets: Other	31	9
Duke Energy Progress | Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	61	1
Offset	(14)	(1)
Duke Energy Progress | Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	48	31
Offset	(17)	(22)
Duke Energy Florida
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	18	2
Net amounts presented in Current Assets: Other	11	2
Net amounts presented in Other Noncurrent Assets: Other	7
Duke Energy Florida | Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	11	2
Duke Energy Florida | Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	7
Duke Energy Ohio
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	1	1
Net amounts presented in Current Assets: Other	1	1
Duke Energy Ohio | Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	1	1
Duke Energy Indiana
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	44	25
Net amounts presented in Current Assets: Other	44	18
Net amounts presented in Other Noncurrent Assets: Other		7
Duke Energy Indiana | Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	44	18
Duke Energy Indiana | Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized		7
Piedmont
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	1	1
Net amounts presented in Current Assets: Other	1	1
Piedmont | Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 1	$ 1

Derivatives and Hedging (Sche_2

Derivatives and Hedging (Schedule of Offsetting Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	$ 319	$ 729
Net amounts presented in Current Liabilities: Other	113	311
Net amounts presented in Other Noncurrent Liabilities: Other	133	217
Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	145	409
Offset	(29)	(2)
Cash collateral posted	$ (3)	$ (96)
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current Liabilities: Other	Current Liabilities: Other
Noncurrent Liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	$ 174	$ 320
Offset	(37)	(37)
Cash collateral posted	$ (4)	$ (66)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other (includes $54 at 2023 related to VIEs)	Other (includes $54 at 2023 related to VIEs)
Duke Energy Carolinas
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	$ 88	$ 260
Net amounts presented in Current Liabilities: Other	40	130
Net amounts presented in Other Noncurrent Liabilities: Other	8	29
Duke Energy Carolinas | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	57	179
Offset	(15)	(1)
Cash collateral posted	(2)	(48)
Duke Energy Carolinas | Noncurrent Liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	31	81
Offset	(19)	(14)
Cash collateral posted	(4)	(38)
Progress Energy
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	58	234
Net amounts presented in Current Liabilities: Other	20	118
Net amounts presented in Other Noncurrent Liabilities: Other	7	35
Progress Energy | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	34	149
Offset	(14)	(1)
Cash collateral posted		(30)
Progress Energy | Noncurrent Liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	24	85
Offset	(17)	(22)
Cash collateral posted		(28)
Duke Energy Progress
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	57	219
Net amounts presented in Current Liabilities: Other	19	118
Net amounts presented in Other Noncurrent Liabilities: Other	7	20
Duke Energy Progress | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	33	149
Offset	(14)	(1)
Cash collateral posted		(30)
Duke Energy Progress | Noncurrent Liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	24	70
Offset	(17)	(22)
Cash collateral posted		(28)
Duke Energy Florida
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	1	15
Net amounts presented in Current Liabilities: Other	1
Net amounts presented in Other Noncurrent Liabilities: Other		15
Duke Energy Florida | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	1
Duke Energy Florida | Noncurrent Liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized		15
Duke Energy Ohio
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	1	1
Net amounts presented in Other Noncurrent Liabilities: Other	1	1
Duke Energy Ohio | Noncurrent Liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	1	1
Duke Energy Indiana
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	3	18
Net amounts presented in Current Liabilities: Other	2
Duke Energy Indiana | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	3	18
Cash collateral posted	(1)	(18)
Piedmont
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	94	147
Net amounts presented in Current Liabilities: Other	16	20
Net amounts presented in Other Noncurrent Liabilities: Other	78	127
Piedmont | Current liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	16	20
Piedmont | Noncurrent Liabilities
Offsetting Derivative Liabilities [Abstract]
Gross amounts recognized	$ 78	$ 127

Derivatives and Hedging (Deriva

Derivatives and Hedging (Derivative Instruments with Credit-Risk Related Contingent Features and Cash Collateral) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features
Aggregate fair value of derivatives in a net liability position	$ 101	$ 342
Fair value of collateral already posted	6	144
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered	95	198
Duke Energy Carolinas
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features
Aggregate fair value of derivatives in a net liability position	52	175
Fair value of collateral already posted	6	86
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered	46	89
Progress Energy
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features
Aggregate fair value of derivatives in a net liability position	49	166
Fair value of collateral already posted		58
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered	49	108
Duke Energy Progress
Schedule of Information Regarding Derivative Instruments That Contain Credit-Risk Related Contingent Features
Aggregate fair value of derivatives in a net liability position	49	166
Fair value of collateral already posted		58
Additional cash collateral or letters of credit in the event credit risk-related contingent features were triggered	$ 49	$ 108

Investments in Debt and Equit_3

Investments in Debt and Equity Securities (Estimated Fair Value of Investments in Debt and Equity Securities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale
Estimated Fair Value	$ 3,326
Total Investments
Unrealized Holding Gains	5,804	$ 5,019
Unrealized Holding Losses	219	171
Estimated Fair Value	11,905	10,603
NDTF
Equity Securities, FV-NI
Gross Unrealized Holding Gains	5,753	4,942
Gross Unrealized Holding Losses	61	22
Estimated Fair Value	8,233	7,278
Debt Securities, Available-for-sale
Estimated Fair Value	3,060	2,732
Total Investments
Unrealized Holding Gains	5,765	4,985
Unrealized Holding Losses	200	159
Estimated Fair Value	11,432	10,143
NDTF | Cash and cash equivalents
Cash and Cash Equivalents
Estimated Fair Value	139	133
NDTF | Corporate debt securities
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	6	12
Gross Unrealized Holding Losses	33	43
Estimated Fair Value	673	632
NDTF | Municipal bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	2	6
Gross Unrealized Holding Losses	14	16
Estimated Fair Value	342	347
NDTF | U.S. government bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	3	24
Gross Unrealized Holding Losses	84	65
Estimated Fair Value	1,806	1,575
NDTF | Other debt securities
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	1	1
Gross Unrealized Holding Losses	8	13
Estimated Fair Value	239	178
Other Investments
Equity Securities, FV-NI
Gross Unrealized Holding Gains	39	33
Gross Unrealized Holding Losses	4
Estimated Fair Value	160	158
Debt Securities, Available-for-sale
Estimated Fair Value	266	271
Total Investments
Unrealized Holding Gains	39	34
Unrealized Holding Losses	19	12
Estimated Fair Value	473	460
Other Investments | Cash and cash equivalents
Cash and Cash Equivalents
Estimated Fair Value	47	31
Other Investments | Corporate debt securities
Debt Securities, Available-for-sale
Gross Unrealized Holding Losses	5	6
Estimated Fair Value	79	82
Other Investments | Municipal bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains		1
Gross Unrealized Holding Losses	1	2
Estimated Fair Value	83	77
Other Investments | U.S. government bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Losses	5	2
Estimated Fair Value	59	65
Other Investments | Other debt securities
Debt Securities, Available-for-sale
Gross Unrealized Holding Losses	4	2
Estimated Fair Value	45	47
Duke Energy Carolinas
Debt Securities, Available-for-sale
Estimated Fair Value	1,651
Duke Energy Carolinas | NDTF
Equity Securities, FV-NI
Gross Unrealized Holding Gains	3,386	2,886
Gross Unrealized Holding Losses	33	14
Estimated Fair Value	4,751	4,196
Debt Securities, Available-for-sale
Estimated Fair Value	1,651	1,438
Total Investments
Unrealized Holding Gains	3,389	2,904
Unrealized Holding Losses	122	99
Estimated Fair Value	6,464	5,685
Duke Energy Carolinas | NDTF | Cash and cash equivalents
Cash and Cash Equivalents
Estimated Fair Value	62	51
Duke Energy Carolinas | NDTF | Corporate debt securities
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	2	4
Gross Unrealized Holding Losses	27	35
Estimated Fair Value	401	390
Duke Energy Carolinas | NDTF | Municipal bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Losses	4	4
Estimated Fair Value	36	50
Duke Energy Carolinas | NDTF | U.S. government bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains		13
Gross Unrealized Holding Losses	50	33
Estimated Fair Value	991	826
Duke Energy Carolinas | NDTF | Other debt securities
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	1	1
Gross Unrealized Holding Losses	8	13
Estimated Fair Value	223	172
Progress Energy
Debt Securities, Available-for-sale
Estimated Fair Value	1,433
Total Investments
Unrealized Holding Gains	2,376	2,081
Unrealized Holding Losses	78	61
Estimated Fair Value	5,015	4,499
Progress Energy | NDTF
Equity Securities, FV-NI
Gross Unrealized Holding Gains	2,367	2,056
Gross Unrealized Holding Losses	28	8
Estimated Fair Value	3,482	3,082
Debt Securities, Available-for-sale
Estimated Fair Value	1,409	1,294
Total Investments
Unrealized Holding Gains	2,376	2,081
Unrealized Holding Losses	78	60
Estimated Fair Value	4,968	4,458
Progress Energy | NDTF | Cash and cash equivalents
Cash and Cash Equivalents
Estimated Fair Value	77	82
Progress Energy | NDTF | Corporate debt securities
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	4	8
Gross Unrealized Holding Losses	6	8
Estimated Fair Value	272	242
Progress Energy | NDTF | Municipal bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	2	6
Gross Unrealized Holding Losses	10	12
Estimated Fair Value	306	297
Progress Energy | NDTF | U.S. government bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	3	11
Gross Unrealized Holding Losses	34	32
Estimated Fair Value	815	749
Progress Energy | NDTF | Other debt securities
Debt Securities, Available-for-sale
Estimated Fair Value	16	6
Progress Energy | Other Investments
Debt Securities, Available-for-sale
Estimated Fair Value	24	23
Total Investments
Unrealized Holding Losses		1
Estimated Fair Value	47	41
Progress Energy | Other Investments | Cash and cash equivalents
Cash and Cash Equivalents
Estimated Fair Value	23	18
Progress Energy | Other Investments | Municipal bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Losses		1
Estimated Fair Value	24	23
Duke Energy Progress
Debt Securities, Available-for-sale
Estimated Fair Value	1,221
Total Investments
Unrealized Holding Gains	2,265	1,979
Unrealized Holding Losses	70	46
Estimated Fair Value	4,653	4,089
Duke Energy Progress | NDTF
Equity Securities, FV-NI
Gross Unrealized Holding Gains	2,256	1,956
Gross Unrealized Holding Losses	28	8
Estimated Fair Value	3,362	2,970
Debt Securities, Available-for-sale
Estimated Fair Value	1,221	1,050
Total Investments
Unrealized Holding Gains	2,265	1,979
Unrealized Holding Losses	70	46
Estimated Fair Value	4,637	4,075
Duke Energy Progress | NDTF | Cash and cash equivalents
Cash and Cash Equivalents
Estimated Fair Value	54	55
Duke Energy Progress | NDTF | Corporate debt securities
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	4	7
Gross Unrealized Holding Losses	6	8
Estimated Fair Value	256	229
Duke Energy Progress | NDTF | Municipal bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	2	6
Gross Unrealized Holding Losses	10	12
Estimated Fair Value	306	297
Duke Energy Progress | NDTF | U.S. government bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains	3	10
Gross Unrealized Holding Losses	26	18
Estimated Fair Value	645	518
Duke Energy Progress | NDTF | Other debt securities
Debt Securities, Available-for-sale
Estimated Fair Value	14	6
Duke Energy Progress | Other Investments
Total Investments
Estimated Fair Value	16	14
Duke Energy Progress | Other Investments | Cash and cash equivalents
Cash and Cash Equivalents
Estimated Fair Value	16	14
Duke Energy Florida
Debt Securities, Available-for-sale
Estimated Fair Value	212
Total Investments
Unrealized Holding Gains	111	102
Unrealized Holding Losses	8	15
Estimated Fair Value	358	409
Duke Energy Florida | NDTF
Equity Securities, FV-NI
Gross Unrealized Holding Gains	111	100
Estimated Fair Value	120	112
Debt Securities, Available-for-sale
Estimated Fair Value	188	244
Total Investments
Unrealized Holding Gains	111	102
Unrealized Holding Losses	8	14
Estimated Fair Value	331	383
Duke Energy Florida | NDTF | Cash and cash equivalents
Cash and Cash Equivalents
Estimated Fair Value	23	27
Duke Energy Florida | NDTF | Corporate debt securities
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains		1
Estimated Fair Value	16	13
Duke Energy Florida | NDTF | U.S. government bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains		1
Gross Unrealized Holding Losses	8	14
Estimated Fair Value	170	231
Duke Energy Florida | NDTF | Other debt securities
Debt Securities, Available-for-sale
Estimated Fair Value	2
Duke Energy Florida | Other Investments
Debt Securities, Available-for-sale
Estimated Fair Value	24	23
Total Investments
Unrealized Holding Losses		1
Estimated Fair Value	27	26
Duke Energy Florida | Other Investments | Cash and cash equivalents
Cash and Cash Equivalents
Estimated Fair Value	3	3
Duke Energy Florida | Other Investments | Municipal bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Losses		1
Estimated Fair Value	24	23
Duke Energy Indiana
Debt Securities, Available-for-sale
Estimated Fair Value	56
Total Investments
Unrealized Holding Gains		5
Unrealized Holding Losses	5	1
Estimated Fair Value	146	163
Duke Energy Indiana | Other Investments
Equity Securities, FV-NI
Gross Unrealized Holding Gains		4
Gross Unrealized Holding Losses	4
Estimated Fair Value	89	98
Debt Securities, Available-for-sale
Estimated Fair Value	56	64
Duke Energy Indiana | Other Investments | Cash and cash equivalents
Cash and Cash Equivalents
Estimated Fair Value	1	1
Duke Energy Indiana | Other Investments | Corporate debt securities
Debt Securities, Available-for-sale
Estimated Fair Value	6	8
Duke Energy Indiana | Other Investments | Municipal bonds
Debt Securities, Available-for-sale
Gross Unrealized Holding Gains		1
Gross Unrealized Holding Losses	1	1
Estimated Fair Value	43	46
Duke Energy Indiana | Other Investments | U.S. government bonds
Debt Securities, Available-for-sale
Estimated Fair Value	$ 7	$ 10

Investments in Debt and Equit_4

Investments in Debt and Equity Securities (Realized Gains and Losses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
FV-NI:
Realized gains	$ 600	$ 129	$ 201
Realized losses	85	146	316
AFS:
Realized gains	28	44	28
Realized losses	67	140	151
Duke Energy Carolinas
FV-NI:
Realized gains	298	82	124
Realized losses	40	79	177
AFS:
Realized gains	14	22	22
Realized losses	40	65	86
Progress Energy
FV-NI:
Realized gains	302	47	77
Realized losses	45	67	139
AFS:
Realized gains	14	22	6
Realized losses	27	75	48
Duke Energy Progress
FV-NI:
Realized gains	288	44	76
Realized losses	44	66	136
AFS:
Realized gains	13	20	6
Realized losses	$ 26	$ 70	$ 44

Investments in Debt and Equit_5

Investments in Debt and Equity Securities (Maturities) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	$ 89
Due after one through five years	791
Due after five through 10 years	721
Due after 10 years	1,725
Total	3,326
Duke Energy Carolinas
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	9
Due after one through five years	303
Due after five through 10 years	441
Due after 10 years	898
Total	1,651
Progress Energy
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	62
Due after one through five years	408
Due after five through 10 years	234
Due after 10 years	729
Total	1,433
Duke Energy Progress
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	12
Due after one through five years	310
Due after five through 10 years	219
Due after 10 years	680
Total	1,221
Duke Energy Florida
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	50
Due after one through five years	98
Due after five through 10 years	15
Due after 10 years	49
Total	212
Duke Energy Indiana
Debt Securities, Available-for-sale [Line Items]
Due in one year or less	4
Due after one through five years	20
Due after five through 10 years	12
Due after 10 years	20
Total	$ 56

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value Measurement Amounts for Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	$ 3,326
Derivative assets	434	$ 189
Total assets	12,339	10,792
Derivative liabilities	(319)	(729)
Net assets	$ 12,020	$ 10,063
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other (including amounts related to VIEs)	Other (including amounts related to VIEs)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other (includes $54 at 2023 related to VIEs)
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	$ 2	$ 37
Total assets	9,625	8,484
Derivative liabilities	(3)	(60)
Net assets	9,622	8,424
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	423	137
Total assets	2,677	2,256
Derivative liabilities	(316)	(669)
Net assets	2,361	1,587
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	9	15
Total assets	9	15
Net assets	9	15
Not Categorized
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	28	37
Net assets	28	37
NDTF
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	139	133
Equity securities	8,233	7,278
Debt securities	3,060	2,732
NDTF | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	139	133
Debt securities	1,022	829
NDTF | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	2,038	1,903
NDTF equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	8,233	7,278
NDTF equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	8,203	7,241
NDTF equity securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	2
NDTF equity securities | Not Categorized
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	28	37
Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	160	158
Debt securities	266	271
Other Investments | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	160	158
Debt securities	52	55
Other Investments | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	214	216
Other cash and cash equivalents
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	47	31
Other cash and cash equivalents | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	47	31
Duke Energy Carolinas
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	1,651
Derivative assets	94	35
Total assets	6,558	5,720
Derivative liabilities	(88)	(260)
Net assets	6,470	5,460
Duke Energy Carolinas | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	5,303	4,585
Net assets	5,303	4,585
Duke Energy Carolinas | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	94	35
Total assets	1,227	1,098
Derivative liabilities	(88)	(260)
Net assets	1,139	838
Duke Energy Carolinas | Not Categorized
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	28	37
Net assets	28	37
Duke Energy Carolinas | NDTF
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	62	51
Equity securities	4,751	4,196
Debt securities	1,651	1,438
Duke Energy Carolinas | NDTF | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	62	51
Equity securities		4,159
Debt securities	520	375
Duke Energy Carolinas | NDTF | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	1,131	1,063
Duke Energy Carolinas | NDTF | Not Categorized
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities		37
Duke Energy Carolinas | NDTF equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	4,751
Duke Energy Carolinas | NDTF equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	4,721
Duke Energy Carolinas | NDTF equity securities | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	2
Duke Energy Carolinas | NDTF equity securities | Not Categorized
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	28
Progress Energy
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	1,433
Derivative assets	127	34
Total assets	5,142	4,533
Derivative liabilities	(58)	(234)
Net assets	5,084	4,299
Progress Energy | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	4,084	3,636
Net assets	4,084	3,636
Progress Energy | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	127	34
Total assets	1,058	897
Derivative liabilities	(58)	(234)
Net assets	1,000	663
Progress Energy | NDTF
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	77	82
Equity securities	3,482	3,082
Debt securities	1,409	1,294
Progress Energy | NDTF | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	77	82
Debt securities	502	454
Progress Energy | NDTF | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	907	840
Progress Energy | NDTF equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	3,482	3,082
Progress Energy | NDTF equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	3,482	3,082
Progress Energy | Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	24	23
Progress Energy | Other Investments | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	24	23
Progress Energy | Other cash and cash equivalents
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	23	18
Progress Energy | Other cash and cash equivalents | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	23	18
Duke Energy Progress
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	1,221
Derivative assets	109	32
Total assets	4,762	4,121
Derivative liabilities	(57)	(219)
Net assets	4,705	3,902
Duke Energy Progress | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	3,797	3,305
Net assets	3,797	3,305
Duke Energy Progress | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	109	32
Total assets	965	816
Derivative liabilities	(57)	(219)
Net assets	908	597
Duke Energy Progress | NDTF
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	54	55
Equity securities	3,362	2,970
Debt securities	1,221	1,050
Duke Energy Progress | NDTF | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	54	55
Debt securities	365	266
Duke Energy Progress | NDTF | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	856	784
Duke Energy Progress | NDTF equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	3,362	2,970
Duke Energy Progress | NDTF equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	3,362	2,970
Duke Energy Progress | Other cash and cash equivalents
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	16	14
Duke Energy Progress | Other cash and cash equivalents | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	16	14
Duke Energy Florida
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	212
Derivative assets	18	2
Total assets	376	411
Derivative liabilities	(1)	(15)
Net assets	375	396
Duke Energy Florida | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	283	330
Net assets	283	330
Duke Energy Florida | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	18	2
Total assets	93	81
Derivative liabilities	(1)	(15)
Net assets	92	66
Duke Energy Florida | NDTF
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	23	27
Equity securities	120	112
Debt securities	188	244
Duke Energy Florida | NDTF | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	23	27
Debt securities	137	188
Duke Energy Florida | NDTF | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	51	56
Duke Energy Florida | NDTF equity securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	120	112
Duke Energy Florida | NDTF equity securities | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	120	112
Duke Energy Florida | Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	24	23
Duke Energy Florida | Other Investments | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	24	23
Duke Energy Florida | Other cash and cash equivalents
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	3	3
Duke Energy Florida | Other cash and cash equivalents | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	3	3
Duke Energy Indiana
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	56
Derivative assets	44	25
Total assets	190	188
Derivative liabilities	(3)	(18)
Net assets	187	170
Duke Energy Indiana | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets		5
Total assets	90	104
Derivative liabilities	(3)	(18)
Net assets	87	86
Duke Energy Indiana | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	36	7
Total assets	92	71
Net assets	92	71
Duke Energy Indiana | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	8	13
Total assets	8	13
Net assets	8	13
Duke Energy Indiana | Other Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	89	98
Debt securities	56	64
Duke Energy Indiana | Other Investments | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	89	98
Duke Energy Indiana | Other Investments | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	56	64
Duke Energy Indiana | Other cash and cash equivalents
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1	1
Duke Energy Indiana | Other cash and cash equivalents | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	1	1
Piedmont
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	1	1
Derivative liabilities	(94)	(147)
Net assets	(93)	(146)
Piedmont | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	1	1
Net assets	1	1
Piedmont | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities	(94)
Net assets	$ (94)
Piedmont | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative liabilities		(147)
Net assets		$ (147)

Fair Value Measurements (Reconc

Fair Value Measurements (Reconciliation of Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Unobservable Inputs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Derivatives (net)
Balance at beginning of period	$ 15	$ 34
Purchases, sales, issuances and settlements:
Purchases	29	47
Settlements	(46)	(72)
Total gains included on the Consolidated Balance Sheet	11	6
Ending balance	9	15
Duke Energy Indiana
Derivatives (net)
Balance at beginning of period	13	29
Purchases, sales, issuances and settlements:
Purchases	27	42
Settlements	(42)	(68)
Total gains included on the Consolidated Balance Sheet	10	10
Ending balance	$ 8	$ 13

Fair Value Measurements (Quanti

Fair Value Measurements (Quantitative Level 3 Fair Value Disclosure) (Details) $ in Millions	Dec. 31, 2024 USD ($) $ / MWh	Dec. 31, 2023 USD ($) $ / MWh	Dec. 31, 2022 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value | $	$ 9	$ 15	$ 34
Duke Energy Ohio | FTR price – per MWh | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value | $	$ 1	$ 2
Duke Energy Ohio | FTR price – per MWh | Minimum | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Input measurement (in usd per MWh and usd per MMBtu)		0.36
Duke Energy Ohio | FTR price – per MWh | Maximum | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Input measurement (in usd per MWh and usd per MMBtu)	1.13	2.11
Duke Energy Ohio | FTR price – per MWh | Weighted Average | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Input measurement (in usd per MWh and usd per MMBtu)	0.48	0.71
Duke Energy Indiana
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value | $	$ 8	$ 13	$ 29
Duke Energy Indiana | FTR price – per MWh | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value | $	$ 8	$ 13
Duke Energy Indiana | FTR price – per MWh | Minimum | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Input measurement (in usd per MWh and usd per MMBtu)	(0.63)	(1.05)
Duke Energy Indiana | FTR price – per MWh | Maximum | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Input measurement (in usd per MWh and usd per MMBtu)	9.24	9.64
Duke Energy Indiana | FTR price – per MWh | Weighted Average | RTO auction pricing
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Input measurement (in usd per MWh and usd per MMBtu)	0.94	1.26

Fair Value Measurements (Other

Fair Value Measurements (Other Fair Value Disclosures) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Book Value	$ 80,689	$ 75,252
Fair Value	73,440	69,790
Unamortized debt discount and premium, net	1,000
Duke Energy Carolinas
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Book Value	17,490	16,012
Fair Value	15,975	15,077
Progress Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Book Value	24,496	23,759
Fair Value	22,548	22,553
Duke Energy Progress
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Book Value	12,504	11,714
Fair Value	11,009	10,595
Duke Energy Florida
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Book Value	10,348	10,401
Fair Value	9,752	10,123
Duke Energy Ohio
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Book Value	4,165	3,518
Fair Value	3,871	3,310
Duke Energy Indiana
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Book Value	4,798	4,502
Fair Value	4,329	4,230
Piedmont
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Book Value	4,003	3,668
Fair Value	$ 3,584	$ 3,336

Variable Interest Entities (Nar

Variable Interest Entities (Narrative) (Details) - USD ($)	1 Months Ended			12 Months Ended
	Jan. 31, 2025	Apr. 30, 2024	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Apr. 01, 2024	Feb. 29, 2024
Variable Interest Entity [Line Items]
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)				$ 4,509,000,000	$ 4,292,000,000
Accounts payable				5,479,000,000	4,228,000,000
Duke Energy Carolinas
Variable Interest Entity [Line Items]
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)				1,536,000,000	1,484,000,000
Accounts payable				1,809,000,000	1,183,000,000
Duke Energy Progress
Variable Interest Entity [Line Items]
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)				1,341,000,000	1,227,000,000
Accounts payable				749,000,000	634,000,000
Duke Energy Ohio
Variable Interest Entity [Line Items]
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)				183,000,000	179,000,000
Accounts payable				313,000,000	338,000,000
Duke Energy Florida
Variable Interest Entity [Line Items]
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)				745,000,000	674,000,000
Accounts payable				1,418,000,000	738,000,000
Duke Energy Indiana
Variable Interest Entity [Line Items]
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)				586,000,000	582,000,000
Accounts payable				$ 257,000,000	300,000,000
CRC
Variable Interest Entity [Line Items]
Variation in credit losses (as a percent)				10%
Variation in discount rates (as a percent)				20%
Consolidated VIEs
Variable Interest Entity [Line Items]
Financial support				$ 0	0	$ 0
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)				494,000,000	462,000,000
Accounts payable				214,000,000	188,000,000
Consolidated VIEs | Duke Energy Carolinas | Secured Debt | Subsequent Event
Variable Interest Entity [Line Items]
Repayments of debt	$ 500,000,000
Consolidated VIEs | Duke Energy Florida
Variable Interest Entity [Line Items]
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)				494,000,000	462,000,000
Accounts payable				$ 208,000,000	188,000,000
Consolidated VIEs | Duke Energy Florida | DEFR Accounts Receivable Securitization Facility Maturing April 2024 | Secured Debt
Variable Interest Entity [Line Items]
Repayments of debt		$ 325,000,000
Consolidated VIEs | Duke Energy Florida | DERF Accounts Receivable Securitization financing | Secured Debt | Subsequent Event
Variable Interest Entity [Line Items]
Repayments of debt	500,000,000
Consolidated VIEs | CRC
Variable Interest Entity [Line Items]
Repayments of debt			$ 350,000,000
Restricted receivables					663,000,000			$ 682,000,000
Proceeds received as cash (as a percent)				75%
Proceeds received as subordinated note (as a percent)				25%
Consolidated VIEs | CRC | Duke Energy Ohio
Variable Interest Entity [Line Items]
Restricted receivables								366,000,000
Consolidated VIEs | CRC | Duke Energy Indiana
Variable Interest Entity [Line Items]
Restricted receivables								$ 316,000,000
Consolidated VIEs | DEFR | Duke Energy Florida
Variable Interest Entity [Line Items]
Restricted receivables					532,000,000		$ 459,000,000
Consolidated VIEs | DERF | Duke Energy Carolinas
Variable Interest Entity [Line Items]
Restricted receivables				$ 1,054,000,000	$ 991,000,000
Consolidated VIEs | DERF | Duke Energy Carolinas | Subsequent Event
Variable Interest Entity [Line Items]
Restricted receivables	$ 1,081,000,000
Consolidated VIEs | DEPSCSF | Duke Energy Progress
Variable Interest Entity [Line Items]
Proceeds from issuance of senior secured bonds		$ 177,000,000
Non-consolidated VIEs | CRC | Duke Energy Ohio
Variable Interest Entity [Line Items]
Discount rate (as a percent)				1%

Variable Interest Entities (Sch

Variable Interest Entities (Schedule of Accounts Receivable Securitizations) (Details) - USD ($) $ in Millions	1 Months Ended
	Apr. 30, 2024	Mar. 31, 2024	Dec. 31, 2024	Apr. 01, 2024	Feb. 29, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Long-Term Debt			$ 76,340			$ 72,452
Duke Energy Carolinas
Variable Interest Entity [Line Items]
Long-Term Debt			16,669			15,693
Duke Energy Progress
Variable Interest Entity [Line Items]
Long-Term Debt			11,371			11,492
Duke Energy Florida
Variable Interest Entity [Line Items]
Long-Term Debt			9,814			9,812
Consolidated VIEs
Variable Interest Entity [Line Items]
Long-Term Debt			1,842			3,000
Consolidated VIEs | Duke Energy Carolinas
Variable Interest Entity [Line Items]
Long-Term Debt			198			708
Consolidated VIEs | Duke Energy Progress
Variable Interest Entity [Line Items]
Long-Term Debt			809			1,079
Consolidated VIEs | Duke Energy Florida
Variable Interest Entity [Line Items]
Long-Term Debt			773			831
Consolidated VIEs | Duke Energy Florida | DEFR Accounts Receivable Securitization Facility Maturing April 2024 | Secured Debt
Variable Interest Entity [Line Items]
Repayments of debt	$ 325
Consolidated VIEs | CRC
Variable Interest Entity [Line Items]
Long-Term Debt						312
Restricted receivables					$ 682	663
Repayments of debt		$ 350
Consolidated VIEs | DERF | Duke Energy Carolinas
Variable Interest Entity [Line Items]
Long-Term Debt			500			500
Restricted receivables			1,054			991
Consolidated VIEs | DEPR | Duke Energy Progress
Variable Interest Entity [Line Items]
Credit facility amount			400
Long-Term Debt			400			400
Restricted receivables			$ 835			833
Consolidated VIEs | DEFR | Duke Energy Florida
Variable Interest Entity [Line Items]
Long-Term Debt						325
Restricted receivables				$ 459		$ 532

Variable Interest Entities (Con

Variable Interest Entities (Consolidated VIEs) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Regulatory Assets: Current	$ 2,756	$ 3,648
Current Assets: Other	695	431
Other Noncurrent Assets: Regulatory assets	14,254	13,618
Other (including amounts related to VIEs)	3,509	3,964
Current Liabilities: Other	2,084	2,319
Current maturities of long-term debt	4,349	2,800
Long-Term Debt	76,340	72,452
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	4,509	4,292
Accounts payable	5,479	4,228
Duke Energy Florida
Variable Interest Entity [Line Items]
Regulatory Assets: Current	1,022	720
Current Assets: Other	227	51
Other Noncurrent Assets: Regulatory assets	2,064	1,883
Other (including amounts related to VIEs)	465	429
Current Liabilities: Other	342	350
Current maturities of long-term debt	534	589
Long-Term Debt	9,814	9,812
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	745	674
Accounts payable	1,418	738
Duke Energy Carolinas
Variable Interest Entity [Line Items]
Regulatory Assets: Current	685	1,564
Current Assets: Other	52	31
Other Noncurrent Assets: Regulatory assets	4,199	3,916
Other (including amounts related to VIEs)	1,127	1,109
Current Liabilities: Other	541	702
Current maturities of long-term debt	521	19
Long-Term Debt	16,669	15,693
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	1,536	1,484
Accounts payable	1,809	1,183
Duke Energy Progress
Variable Interest Entity [Line Items]
Regulatory Assets: Current	626	942
Current Assets: Other	104	72
Other Noncurrent Assets: Regulatory assets	4,555	4,546
Other (including amounts related to VIEs)	724	682
Current Liabilities: Other	427	481
Current maturities of long-term debt	983	72
Long-Term Debt	11,371	11,492
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	1,341	1,227
Accounts payable	749	634
Consolidated VIEs
Variable Interest Entity [Line Items]
Regulatory Assets: Current	120	110
Current Assets: Other	90
Other Noncurrent Assets: Regulatory assets	1,705	1,642
Current maturities of long-term debt	1,012	428
Long-Term Debt	1,842	3,000
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Accounts payable	214	188
Consolidated VIEs | Duke Energy Florida
Variable Interest Entity [Line Items]
Regulatory Assets: Current	61	59
Current Assets: Other	35	37
Other Noncurrent Assets: Regulatory assets	741	803
Current maturities of long-term debt	59	384
Long-Term Debt	773	831
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)	494	462
Accounts payable	208	188
Consolidated VIEs | Duke Energy Carolinas
Variable Interest Entity [Line Items]
Regulatory Assets: Current	12	12
Current Assets: Other	9	9
Other Noncurrent Assets: Regulatory assets	189	196
Current maturities of long-term debt	510	510
Long-Term Debt	198	708
Consolidated VIEs | Duke Energy Progress
Variable Interest Entity [Line Items]
Regulatory Assets: Current	47	39
Current Assets: Other	40	31
Other Noncurrent Assets: Regulatory assets	775	643
Current maturities of long-term debt	443	34
Long-Term Debt	809	1,079
Consolidated VIEs | DEFPF | Duke Energy Florida
Variable Interest Entity [Line Items]
Regulatory Assets: Current	61	59
Current Assets: Other	35	37
Other Noncurrent Assets: Regulatory assets	741	803
Current Liabilities: Other	8	8
Current maturities of long-term debt	59	59
Long-Term Debt	773	831
Consolidated VIEs | DECNCSF | Duke Energy Carolinas
Variable Interest Entity [Line Items]
Regulatory Assets: Current	12	12
Current Assets: Other	9	9
Other Noncurrent Assets: Regulatory assets	189	196
Other (including amounts related to VIEs)	1	1
Current Liabilities: Other	2	3
Current maturities of long-term debt	10	10
Long-Term Debt	198	208
Consolidated VIEs | DEPNCSF | Duke Energy Progress
Variable Interest Entity [Line Items]
Regulatory Assets: Current	39	39
Current Assets: Other	27	31
Other Noncurrent Assets: Regulatory assets	620	643
Other (including amounts related to VIEs)	4	2
Current Liabilities: Other	10	8
Current maturities of long-term debt	34	34
Long-Term Debt	$ 646	680
Consolidated VIEs | DEPSCSF | Duke Energy Progress
Variable Interest Entity [Line Items]
Regulatory Assets: Current		8
Current Assets: Other		13
Other Noncurrent Assets: Regulatory assets		155
Other (including amounts related to VIEs)		1
Current Liabilities: Other		7
Current maturities of long-term debt		9
Long-Term Debt		$ 163

Variable Interest Entities (S_2

Variable Interest Entities (Schedule of Non-Consolidated VIEs) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Receivables from affiliated companies	$ 2,232	$ 1,112
Investments in equity method unconsolidated affiliates	353	492
Other noncurrent assets	3,509	3,964
Total Assets	186,343	176,893	$ 178,086
Other current liabilities	2,084	2,319
Other noncurrent liabilities	1,556	1,393
Duke Energy Ohio
Variable Interest Entity [Line Items]
Receivables from affiliated companies	447	112
Other noncurrent assets	82	84
Total Assets	12,768	12,216	11,506
Other current liabilities	67	65
Other noncurrent liabilities	91	86
Duke Energy Ohio | Affiliated entity
Variable Interest Entity [Line Items]
Receivables from affiliated companies	11	239
Duke Energy Indiana
Variable Interest Entity [Line Items]
Receivables from affiliated companies	423	156
Other noncurrent assets	323	325
Total Assets	15,727	14,811	$ 14,654
Other current liabilities	183	184
Other noncurrent liabilities	19	0
Duke Energy Indiana | Affiliated entity
Variable Interest Entity [Line Items]
Receivables from affiliated companies	1	197
Non-consolidated VIEs | Duke Energy Ohio
Variable Interest Entity [Line Items]
Total Assets		150
Net assets		150
Non-consolidated VIEs | Duke Energy Ohio | Affiliated entity
Variable Interest Entity [Line Items]
Receivables from affiliated companies		150
Non-consolidated VIEs | Duke Energy Indiana
Variable Interest Entity [Line Items]
Total Assets		208
Net assets		208
Non-consolidated VIEs | Duke Energy Indiana | Affiliated entity
Variable Interest Entity [Line Items]
Receivables from affiliated companies		208
Non-consolidated VIEs | Pipeline Investments
Variable Interest Entity [Line Items]
Investments in equity method unconsolidated affiliates		67
Other noncurrent assets	17	43
Total Assets	17	110
Other current liabilities	2	4
Other noncurrent liabilities		5
Total liabilities	2	9
Net assets	$ 15	$ 101

Variable Interest Entities (Fai

Variable Interest Entities (Fair Value Assumptions) (Details) - Non-consolidated VIEs - CRC	12 Months Ended
	Dec. 31, 2023
Duke Energy Ohio
Variable Interest Entity [Line Items]
Anticipated credit loss ratio (as a percent)	0.60%
Discount rate (as a percent)	6.10%
Receivable turnover rate (as a percent)	13.90%
Duke Energy Indiana
Variable Interest Entity [Line Items]
Anticipated credit loss ratio (as a percent)	0.40%
Discount rate (as a percent)	6.10%
Receivable turnover rate (as a percent)	12%

Variable Interest Entities (Rec

Variable Interest Entities (Receivables Sold) (Details) - Non-consolidated VIEs - CRC - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Duke Energy Ohio
Variable Interest Entity [Line Items]
Receivables sold	$ 0	$ 361
Less: Retained interests	0	150
Net receivables sold	0	211
Duke Energy Indiana
Variable Interest Entity [Line Items]
Receivables sold	0	351
Less: Retained interests	0	208
Net receivables sold	$ 0	$ 143

Variable Interest Entities (Sal

Variable Interest Entities (Sales and Cash Flows) (Details) - Non-consolidated VIEs - CRC - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Duke Energy Ohio
Variable Interest Entity [Line Items]
Receivables sold	$ 474	$ 2,578	$ 2,562
Loss recognized on sale	7	34	18
Cash proceeds from receivables sold	478	2,591	2,424
Collection fees received	0	1	1
Return received on retained interests	4	19	10
Duke Energy Indiana
Variable Interest Entity [Line Items]
Receivables sold	473	3,223	3,744
Loss recognized on sale	6	39	26
Cash proceeds from receivables sold	523	3,294	3,498
Collection fees received	0	2	2
Return received on retained interests	$ 4	$ 25	$ 15

Revenue (Remaining Performance

Revenue (Remaining Performance Obligations) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Duke Energy Carolinas
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 48
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	12
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	12
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	12
Duke Energy Carolinas | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	12
Progress Energy
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	160
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 36
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 43
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 13
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 13
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 13
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Progress Energy | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 42
Revenue, remaining performance obligation, expected timing of satisfaction, period
Duke Energy Progress
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 50
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 6
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 6
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 6
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 6
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 6
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Progress | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 20
Revenue, remaining performance obligation, expected timing of satisfaction, period
Duke Energy Florida
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 110
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 30
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 37
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 7
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 7
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 7
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Florida | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 22
Revenue, remaining performance obligation, expected timing of satisfaction, period
Duke Energy Indiana
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 54
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 17
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 17
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 15
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 5
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Duke Energy Indiana | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period
Piedmont
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 405
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 64
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 51
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 49
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 46
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 44
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Piedmont | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 151
Revenue, remaining performance obligation, expected timing of satisfaction, period

Revenue (Disaggregation of Reve

Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 30,050	$ 28,674	$ 28,675
Other revenue sources	307	386	93
Total operating revenues	30,357	29,060	28,768
Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	27,769	26,546	25,888
Total operating revenues	28,020	26,846	25,990
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	12,901	12,098	11,377
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	8,207	7,895	7,356
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	3,427	3,416	3,504
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,205	2,175	2,856
Electric Utilities and Infrastructure | Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,029	962	795
Gas Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,243	2,091	2,757
Total operating revenues	2,299	2,177	2,748
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,320	1,226	1,462
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	639	605	765
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	158	141	170
Gas Utilities and Infrastructure | Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	126	119	360
Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	38	37	30
Duke Energy Carolinas
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	9,615	8,223	7,855
Other revenue sources	103	65	2
Total operating revenues	9,718	8,288	7,857
Duke Energy Carolinas | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	9,615	8,223	7,855
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	4,150	3,409	3,275
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	3,080	2,670	2,396
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,488	1,334	1,251
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	547	492	561
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	350	318	372
Progress Energy
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	13,464	13,355	13,082
Other revenue sources	169	189	43
Total operating revenues	13,633	13,544	13,125
Progress Energy | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	13,464	13,355	13,082
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	6,592	6,510	5,812
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	3,718	3,762	3,396
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,066	1,105	1,095
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,414	1,388	1,785
Progress Energy | Electric Utilities and Infrastructure | Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	674	590	994
Duke Energy Progress
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	6,979	6,426	6,742
Other revenue sources	38	62	11
Total operating revenues	7,017	6,488	6,753
Duke Energy Progress | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	6,979	6,426	6,742
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,872	2,540	2,378
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,754	1,588	1,480
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	742	733	770
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,268	1,240	1,346
Duke Energy Progress | Electric Utilities and Infrastructure | Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	343	325	768
Duke Energy Florida
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	6,485	6,929	6,340
Other revenue sources	110	107	13
Total operating revenues	6,595	7,036	6,353
Duke Energy Florida | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	6,485	6,929	6,340
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	3,720	3,970	3,434
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,964	2,174	1,916
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	324	372	325
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	146	148	439
Duke Energy Florida | Electric Utilities and Infrastructure | Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	331	265	226
Duke Energy Ohio
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,527	2,468	2,486
Other revenue sources	18	39	28
Total operating revenues	2,545	2,507	2,514
Duke Energy Ohio | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,888	1,829	1,769
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,009	947	862
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	590	552	517
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	149	191	202
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	51	46	127
Duke Energy Ohio | Electric Utilities and Infrastructure | Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	89	93	61
Duke Energy Ohio | Gas Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	639	639	717
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	427	435	488
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	153	154	180
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	33	26	24
Duke Energy Ohio | Gas Utilities and Infrastructure | Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	26	24	25
Duke Energy Indiana
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,992	3,335	3,837
Other revenue sources	48	64	85
Total operating revenues	3,040	3,399	3,922
Duke Energy Indiana | Electric Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,992	3,335	3,837
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,149	1,233	1,430
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	818	911	1,049
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	724	786	956
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	194	248	383
Duke Energy Indiana | Electric Utilities and Infrastructure | Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	107	157	19
Piedmont
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,637	1,483	2,068
Other revenue sources	92	145	56
Total operating revenues	1,729	1,628	2,124
Piedmont | Gas Utilities and Infrastructure
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	1,637	1,483	2,068
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	893	792	974
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	486	450	585
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	125	115	144
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	33	31	94
Piedmont | Gas Utilities and Infrastructure | Other
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 100	$ 95	$ 271

Revenue (Reserve for Credit Los

Revenue (Reserve for Credit Losses for Trade and Other Receivables) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 205	$ 216	$ 121
Write-Offs	(132)	(164)	(158)
Credit Loss Expense	98	101	160
Other Adjustments	38	52	93
Ending balance	209	205	216
Duke Energy Carolinas
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	56	68	42
Write-Offs	(55)	(71)	(73)
Credit Loss Expense	39	35	40
Other Adjustments	29	24	59
Ending balance	69	56	68
Progress Energy
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	74	81	36
Write-Offs	(73)	(84)	(70)
Credit Loss Expense	51	48	72
Other Adjustments	21	29	43
Ending balance	73	74	81
Duke Energy Progress
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	44	44	21
Write-Offs	(45)	(41)	(36)
Credit Loss Expense	25	12	17
Other Adjustments	20	29	42
Ending balance	44	44	44
Duke Energy Florida
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	31	36	16
Write-Offs	(28)	(42)	(34)
Credit Loss Expense	26	37	55
Other Adjustments			(1)
Ending balance	29	31	36
Duke Energy Ohio
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	9	6	4
Credit Loss Expense	3	3	2
Other Adjustments	31
Ending balance	43	9	6
Duke Energy Indiana
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5	4	3
Credit Loss Expense	2	1	1
Other Adjustments	8
Ending balance	15	5	4
Piedmont
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	11	14	15
Write-Offs	(4)	(10)	(12)
Credit Loss Expense	3	7	11
Ending balance	$ 10	$ 11	$ 14

Stockholders' Equity (Earnings

Stockholders' Equity (Earnings Per Share Data) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Net Income available to Duke Energy common stockholders	$ 4,402	$ 2,735	$ 2,444
Net income (loss) from discontinued operations attributable to Duke Energy Corporation	7	(1,391)	(1,215)
Accumulated preferred stock dividends adjustment	14
Less: Impact of participating securities	6	6	2
Income from continuing operations available to Duke Energy common stockholders	4,403	4,120	3,657
Income (Loss) From Discontinued Operations, net of tax	10	(1,455)	(1,323)
Add: (Income) Loss attributable to NCI	$ (3)	$ 64	$ 108
Weighted average common shares outstanding – basic (in shares)	772	771	770
Weighted average common shares outstanding – diluted (in shares)	772	771	770
EPS from continuing operations available to Duke Energy common stockholders
Basic (usd per share)	$ 5.70	$ 5.35	$ 4.74
Diluted (usd per share)	5.70	5.35	4.74
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders
Basic (usd per share)	0.01	(1.81)	(1.57)
Diluted (usd per share)	$ 0.01	$ (1.81)	$ (1.57)
Potentially dilutive items excluded from the calculation (in shares)	2	2	2
Dividends declared per share (usd per share)	$ 4.14	$ 4.06	$ 3.98
Series A Preferred Stock
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders
Dividends declared on preferred stock (usd per share)	$ 1.437	1.437	1.437
Cumulative annual dividend rate (as a percent)	5.75%
Liquidation preference per share (in usd per share)	$ 25
Series B Preferred Stock
Earnings (Loss) Per Share from discontinued operations attributable to Duke Energy common stockholders
Dividends declared on preferred stock (usd per share)	$ 48.750	$ 48.750	$ 48.750
Cumulative annual dividend rate (as a percent)	4.875%

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	12 Months Ended
	Sep. 16, 2024	Nov. 30, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jun. 15, 2024
Equity [Abstract]
Maximum value of shares to be issued under ATM program		$ 1,500
Class of Stock [Line Items]
Maximum value of shares to be issued under ATM program		$ 1,500
Redemption price (in usd per share)						$ 25
Less: Preferred Redemption Costs			$ 16	$ 0	$ 0
Settlement of equity forwards (in shares)			2,900,000
Settlement of equity forwards, net cash proceeds			$ 297
Equity Forwards, Fifth Tranche
Class of Stock [Line Items]
Settlement of equity forwards, net cash proceeds			$ 74
Shares Priced (shares)			671,216
Equity forwards
Class of Stock [Line Items]
Settlement of equity forwards, net cash proceeds			$ 371
Shares Priced (shares)			3,600,000
If net share settlement was elected
Class of Stock [Line Items]
Shares Priced (shares)			2,931,591
Series A Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (in usd per share)			$ 25
Series B Preferred Stock
Class of Stock [Line Items]
Redemption price (in usd per share)	$ 1,000
Less: Preferred Redemption Costs	$ 16
Shares redeemed (in shares)	1,000,000
Redemption amount	$ 1,000
Difference between carrying value and consideration paid	11
Excise tax liability	$ 5

Stockholders' Equity - Equity I

Stockholders' Equity - Equity Issuances Pursuant to Forward Contracts (Details)	12 Months Ended
	Dec. 31, 2024 $ / shares shares
Equity Forwards, Fifth Tranche
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares Priced (shares)	671,216
If net share settlement was elected
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares Priced (shares)	2,931,591
If net share settlement was elected | Equity Forwards, First Tranche
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares Priced (shares)	802,371
Forward contract indexed to issuer's equity, forward rate per share (in dollars per share) | $ / shares	$ 92.77
If net share settlement was elected | Equity Forwards, Second Tranche
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares Priced (shares)	729,674
Forward contract indexed to issuer's equity, forward rate per share (in dollars per share) | $ / shares	$ 101.10
If net share settlement was elected | Equity Forwards, Third Tranche
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares Priced (shares)	737,280
Forward contract indexed to issuer's equity, forward rate per share (in dollars per share) | $ / shares	$ 100.99
If net share settlement was elected | Equity Forwards, Fourth Tranche
Forward Contract Indexed to Issuer's Equity [Line Items]
Shares Priced (shares)	662,266
Forward contract indexed to issuer's equity, forward rate per share (in dollars per share) | $ / shares	$ 111.45

Severance (Narrative) (Details)

Severance (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) employee	Dec. 31, 2023 USD ($) employee	Dec. 31, 2022 USD ($) employee
Restructuring and Related Activities [Abstract]
Number of eligible employees | employee	341	682	233
Severance expense | $	$ (28)	$ 102	$ 65
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Operation, maintenance and other

Severance (Expenses) (Details)

Severance (Expenses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Severance expense	$ (28)	$ 102	$ 65
Amortization of deferred severance charges		22	33
Operation, maintenance and other
Restructuring Cost and Reserve [Line Items]
Severance expense		97
Employee Severance Charges, 2021
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(6)		(19)
Employee Severance Charges, 2022
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(1)	(14)
Employee Severance Charges, 2023
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(27)
Duke Energy Carolinas
Restructuring Cost and Reserve [Line Items]
Severance expense	(11)	53	40
Amortization of deferred severance charges		14	22
Duke Energy Carolinas | Employee Severance Charges, 2021
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(2)		(6)
Duke Energy Carolinas | Employee Severance Charges, 2022
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(1)	(7)
Duke Energy Carolinas | Employee Severance Charges, 2023
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(11)
Progress Energy
Restructuring Cost and Reserve [Line Items]
Severance expense	(9)	33	20
Amortization of deferred severance charges		8	11
Progress Energy | Employee Severance Charges, 2021
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(3)		(8)
Progress Energy | Employee Severance Charges, 2022
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments		(5)
Progress Energy | Employee Severance Charges, 2023
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(9)
Duke Energy Progress
Restructuring Cost and Reserve [Line Items]
Severance expense	(5)	21	17
Amortization of deferred severance charges		8	11
Duke Energy Progress | Employee Severance Charges, 2021
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(2)		(4)
Duke Energy Progress | Employee Severance Charges, 2022
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments		(3)
Duke Energy Progress | Employee Severance Charges, 2023
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(5)
Duke Energy Florida
Restructuring Cost and Reserve [Line Items]
Severance expense	(4)	12	3
Duke Energy Florida | Employee Severance Charges, 2021
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(1)		(4)
Duke Energy Florida | Employee Severance Charges, 2022
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments		(2)
Duke Energy Florida | Employee Severance Charges, 2023
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(4)
Duke Energy Ohio
Restructuring Cost and Reserve [Line Items]
Severance expense	(2)	3	1
Duke Energy Ohio | Employee Severance Charges, 2021
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments			(1)
Duke Energy Ohio | Employee Severance Charges, 2022
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments		(1)
Duke Energy Ohio | Employee Severance Charges, 2023
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(2)
Duke Energy Indiana
Restructuring Cost and Reserve [Line Items]
Severance expense	(4)	6	2
Duke Energy Indiana | Employee Severance Charges, 2021
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(1)		(2)
Duke Energy Indiana | Employee Severance Charges, 2022
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments		(1)
Duke Energy Indiana | Employee Severance Charges, 2023
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	(4)
Piedmont
Restructuring Cost and Reserve [Line Items]
Severance expense	(2)	$ 4	2
Piedmont | Employee Severance Charges, 2021
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments			$ (1)
Piedmont | Employee Severance Charges, 2023
Restructuring Cost and Reserve [Line Items]
Severance charges adjustments	$ (2)

Severance (Rollforward) (Detail

Severance (Rollforward) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Restructuring Reserve [Roll Forward]
Balance, beginning of period	$ 102	$ 64
Provision/Adjustments	(28)	80
Cash Reductions	(55)	(42)
Balance, end of period	19	102
Duke Energy Carolinas
Restructuring Reserve [Roll Forward]
Balance, beginning of period	35	15
Provision/Adjustments	(6)	30
Cash Reductions	(21)	(10)
Balance, end of period	8	35
Progress Energy
Restructuring Reserve [Roll Forward]
Balance, beginning of period	16	6
Provision/Adjustments	(3)	13
Cash Reductions	(11)	(3)
Balance, end of period	2	16
Duke Energy Progress
Restructuring Reserve [Roll Forward]
Balance, beginning of period	8	4
Provision/Adjustments	(1)	6
Cash Reductions	(6)	(2)
Balance, end of period	1	8
Duke Energy Florida
Restructuring Reserve [Roll Forward]
Balance, beginning of period	8	2
Provision/Adjustments	(2)	7
Cash Reductions	(5)	(1)
Balance, end of period	1	8
Duke Energy Ohio
Restructuring Reserve [Roll Forward]
Balance, beginning of period	1
Provision/Adjustments	(1)	1
Balance, end of period		1
Duke Energy Indiana
Restructuring Reserve [Roll Forward]
Balance, beginning of period	4
Provision/Adjustments	(3)	4
Cash Reductions	(1)
Balance, end of period		4
Piedmont
Restructuring Reserve [Roll Forward]
Balance, beginning of period	2	1
Provision/Adjustments	(1)	2
Cash Reductions	$ (1)	(1)
Balance, end of period		$ 2

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for awards to employees and outside directors (in shares)	15
RSU awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total grant date fair value of shares vested	$ 55	$ 52	$ 49
Unrecognized compensation cost	$ 37
Unrecognized compensation cost, period of recognition (in months)	24 months
RSU awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Performance awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Total grant date fair value of shares vested	$ 30	$ 31	$ 25
Unrecognized compensation cost	$ 24
Unrecognized compensation cost, period of recognition (in months)	22 months
Risk free interest rate (as a percent)	4.49%
Expected volatility rate (as a percent)	18.70%
Performance awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percent (as a percent)	0%
Performance awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percent (as a percent)	200%

Stock-Based Compensation (Sched

Stock-Based Compensation (Schedule of Stock-Based Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense recognized	$ 70	$ 71	$ 74
Pretax stock-based compensation cost	96	97	100
Stock-based compensation costs capitalized	6	6	5
Stock-based compensation expense	90	91	95
Tax benefit associated with stock-based compensation expense	20	20	21
RSU awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax stock-based compensation cost	49	54	58
Performance awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pretax stock-based compensation cost	47	43	42
Duke Energy Carolinas
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense recognized	25	25	27
Progress Energy
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense recognized	28	28	27
Duke Energy Progress
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense recognized	17	17	17
Duke Energy Florida
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense recognized	11	11	10
Duke Energy Ohio
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense recognized	5	5	5
Duke Energy Indiana
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense recognized	7	7	7
Piedmont
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense recognized	$ 4	$ 4	$ 4

Stock-Based Compensation (Summa

Stock-Based Compensation (Summary of Stock Awards Outstanding) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
RSU awards
Schedule Of Shares Awarded [Abstract]
Shares granted (in thousands)	598	670	654
Fair value (in millions)	$ 59	$ 65	$ 64
Shares
Outstanding at beginning of period (in shares)	1,115
Granted (in shares)	598	670	654
Vested (in shares)	(581)
Forfeited (in shares)	(73)
Outstanding at end of period (in shares)	1,059	1,115
Stock awards expected to vest (in shares)	1,014
Weighted Average Grant Date Fair Value
Weighted average fair value at beginning of period (usd per share)	$ 96
Granted (usd per share)	99
Vested (usd per share)	95
Forfeited (usd per share)	98
Weighted average fair value at end of period (usd per share)	98	$ 96
Weighted average fair value of awards expected to vest (usd per share)	$ 98
Performance awards
Schedule Of Shares Awarded [Abstract]
Shares granted (in thousands)	440	422	408
Fair value (in millions)	$ 42	$ 42	$ 40
Shares
Outstanding at beginning of period (in shares)	1,115
Granted (in shares)	440	422	408
Vested (in shares)	(338)
Forfeited (in shares)	(30)
Outstanding at end of period (in shares)	1,187	1,115
Stock awards expected to vest (in shares)	1,156
Weighted Average Grant Date Fair Value
Weighted average fair value at beginning of period (usd per share)	$ 96
Granted (usd per share)	95
Vested (usd per share)	88
Forfeited (usd per share)	96
Weighted average fair value at end of period (usd per share)	98	$ 96
Weighted average fair value of awards expected to vest (usd per share)	$ 98

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2023
Defined Benefit Plan Disclosure [Line Items]
Maximum years of participation (in years)	35 years
Matching contribution (as a percent)	100%
Eligible pay (as a percent)	6%
Additional contribution for employees not participating in defined pension plans (as a percent)	4%
Vesting period (in years)	3 years
Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Average Earnings, Period	3 years
Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Average Earnings, Period	5 years
Master Trust
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	100%
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 270	$ 676
Average remaining service period (in years)	15 years
Accumulated Benefit Obligation at measurement date	$ 5,948	6,267
Projected benefit obligation	5,980	6,299	$ 6,358
Benefits paid	645	607
Employer contributions	100	$ 100	$ 58
Expected long-term rate of return on plan assets (as a percent)			6.50%
Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	203
Projected benefit obligation	203
Benefits paid	30
Employer contributions	$ 30
Pension Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets (as a percent)	8.50%	6.50%
Pension Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets (as a percent)	7%	8.25%
Pension Plan | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Master trust allocation (as a percent)	98%	98%
Expected long-term rate of return on plan assets (as a percent)	7%
Pension Plan | Master Trust | Liability Hedging Assets
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)				35%
Pension Plan | Master Trust | Return Seeking Assets
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)				65%
Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 7	$ 19
Average remaining service period (in years)	7 years
Projected benefit obligation	$ 334	347	$ 437
Benefits paid	37	$ 58
Employer contributions	$ 27
Expected long-term rate of return on plan assets (as a percent)		8.25%	6.50%
Other Post-Retirement Benefit Plans | Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets (as a percent)	6.50%	6.50%
Other Post-Retirement Benefit Plans | Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets (as a percent)	8.25%
Other Post-Retirement Benefit Plans | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Master trust allocation (as a percent)	2%	2%
Expected long-term rate of return on plan assets (as a percent)	8.50%
Target allocation (as a percent)	100%
Other Post-Retirement Benefit Plans | Master Trust | Liability Hedging Assets
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)				80%
Other Post-Retirement Benefit Plans | Master Trust | Return Seeking Assets
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)				20%
Duke Energy Carolinas | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 73	$ 183
Average remaining service period (in years)	11 years
Accumulated Benefit Obligation at measurement date	$ 1,444	1,517
Projected benefit obligation	1,444	1,514	$ 1,554
Benefits paid	177	177
Employer contributions	26	26	15
Duke Energy Carolinas | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	8
Projected benefit obligation	8
Benefits paid	2
Employer contributions	2
Duke Energy Carolinas | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 4	8
Average remaining service period (in years)	6 years
Projected benefit obligation	$ 63	69	112
Benefits paid	8	14
Employer contributions	4
Progress Energy | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 98	229
Average remaining service period (in years)	11 years
Accumulated Benefit Obligation at measurement date	$ 1,861	1,975
Projected benefit obligation	1,875	1,990	1,975
Benefits paid	198	159
Employer contributions	23	22	13
Progress Energy | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	72
Projected benefit obligation	72
Benefits paid	8
Employer contributions	$ 8
Progress Energy | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Average remaining service period (in years)	5 years
Projected benefit obligation	$ 146	146	168
Benefits paid	15	22
Employer contributions	14
Duke Energy Progress | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 46	107
Average remaining service period (in years)	11 years
Accumulated Benefit Obligation at measurement date	$ 838	912
Projected benefit obligation	838	911	909
Benefits paid	111	80
Employer contributions	14	13	8
Duke Energy Progress | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	22
Projected benefit obligation	22
Benefits paid	3
Employer contributions	$ 3
Duke Energy Progress | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Average remaining service period (in years)	5 years
Projected benefit obligation	$ 87	84	95
Benefits paid	6	$ 11
Employer contributions	7
Duke Energy Florida
Defined Benefit Plan Disclosure [Line Items]
Fair value evaluation period (in years)		5 years
Duke Energy Florida | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 53	$ 120
Average remaining service period (in years)	12 years
Accumulated Benefit Obligation at measurement date	$ 1,013	1,053
Projected benefit obligation	1,027	1,069	1,055
Benefits paid	88	78
Employer contributions	9	9	5
Duke Energy Florida | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	27
Projected benefit obligation	27
Benefits paid	3
Employer contributions	$ 3
Duke Energy Florida | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Average remaining service period (in years)	7 years
Projected benefit obligation	$ 60	60	69
Benefits paid	6	10
Employer contributions	7
Duke Energy Indiana | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 17	45
Average remaining service period (in years)	13 years
Accumulated Benefit Obligation at measurement date	$ 466	494
Projected benefit obligation	471	496	499
Benefits paid	41	40
Employer contributions	8	8	5
Duke Energy Indiana | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	1
Projected benefit obligation	$ 1
Duke Energy Indiana | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Average remaining service period (in years)	6 years
Projected benefit obligation	$ 20	24	30
Benefits paid	3	6
Piedmont | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 10	23
Average remaining service period (in years)	9 years
Accumulated Benefit Obligation at measurement date	$ 181	176
Projected benefit obligation	181	175	170
Benefits paid	12	16
Employer contributions	3	3	2
Piedmont | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	2
Projected benefit obligation	2
Piedmont | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 3	4
Average remaining service period (in years)	6 years
Projected benefit obligation	$ 15	15	21
Benefits paid	1	2
Duke Energy Ohio | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets	$ 11	29
Average remaining service period (in years)	14 years
Accumulated Benefit Obligation at measurement date	$ 304	317
Projected benefit obligation	309	325	333
Benefits paid	33	31
Employer contributions	5	5	3
Duke Energy Ohio | Pension Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation at measurement date	2
Projected benefit obligation	$ 2
Duke Energy Ohio | Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets		1
Average remaining service period (in years)	6 years
Projected benefit obligation	$ 18	19	20
Benefits paid	2	3
Employer contributions	2
Other Nonoperating Income (Expense)
Defined Benefit Plan Disclosure [Line Items]
Actual return on plan assets		24
Duke Energy Retirement Cash Balance Plan
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	72	$ 0	117
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense)
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	12		22
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Carolinas
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	3		3
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Progress Energy
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	5		5
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Progress
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	5		5
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Florida
Defined Benefit Plan Disclosure [Line Items]
Settlement charge			1
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Piedmont
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	1		6
Duke Energy Retirement Cash Balance Plan | Other Nonoperating Income (Expense) | Duke Energy Ohio
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	2		5
Regulatory Assets, Noncurrent | Noncurrent assets
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	60		95
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Carolinas
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	31		35
Regulatory Assets, Noncurrent | Noncurrent assets | Progress Energy
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	23		23
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Progress
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	16		16
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Florida
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	7		7
Regulatory Assets, Noncurrent | Noncurrent assets | Duke Energy Indiana
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	3		8
Regulatory Assets, Noncurrent | Noncurrent assets | Piedmont
Defined Benefit Plan Disclosure [Line Items]
Settlement charge	$ 4		$ 29

Employee Benefit Plans (Contrib

Employee Benefit Plans (Contributions to Defined Benefit Pension Plans) (Details) - Pension Plan - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 100	$ 100	$ 58
Duke Energy Carolinas
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	26	26	15
Progress Energy
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	23	22	13
Duke Energy Progress
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	14	13	8
Duke Energy Florida
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	9	9	5
Duke Energy Ohio
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	5	5	3
Duke Energy Indiana
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	8	8	5
Piedmont
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 3	$ 3	$ 2

Employee Benefit Plans (Compone

Employee Benefit Plans (Components of Net Periodic Pension Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 107	$ 110
Interest cost on projected benefit obligation	325	344
Amortization of regulatory asset	2	3	$ 3
Pension Plan | Duke Energy Carolinas
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	36	36
Interest cost on projected benefit obligation	78	84	59
Expected return on plan assets	(161)	(160)	(152)
Amortization of actuarial loss	8	2	16
Amortization of prior service credit	(1)	(1)	(3)
Amortization of settlement charges	12	9	9
Net periodic pension costs	(27)	(28)	(23)
Service cost	37	38	48
Pension Plan | Progress Energy
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	30	30
Interest cost on projected benefit obligation	103	107	77
Expected return on plan assets	(217)	(198)	(183)
Amortization of actuarial loss	10	4	23
Amortization of settlement charges	10	5	8
MRVA method change			24
Net periodic pension costs	(62)	(49)	(8)
Service cost	32	33	43
Pension Plan | Duke Energy Progress
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	18	18
Interest cost on projected benefit obligation	47	49	35
Expected return on plan assets	(99)	(93)	(88)
Amortization of actuarial loss	6	2	12
Amortization of settlement charges	9	3	7
Net periodic pension costs	(18)	(20)	(9)
Service cost	19	19	25
Pension Plan | Duke Energy Florida
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	12	12
Interest cost on projected benefit obligation	56	57	41
Expected return on plan assets	(116)	(104)	(94)
Amortization of actuarial loss	5	2	12
Amortization of settlement charges	2	1	1
MRVA method change			24
Net periodic pension costs	(40)	(31)	1
Service cost	13	13	17
Pension Plan | Duke Energy Ohio
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	3	3
Interest cost on projected benefit obligation	17	18	13
Expected return on plan assets	(25)	(24)	(23)
Amortization of actuarial loss	1		4
Amortization of settlement charges	2		5
Net periodic pension costs	(2)	(3)	3
Amortization of regulatory asset	1	1	1
Service cost	3	3	4
Pension Plan | Duke Energy Indiana
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	6	6
Interest cost on projected benefit obligation	26	27	20
Expected return on plan assets	(42)	(40)	(37)
Amortization of actuarial loss	4	2	9
Amortization of prior service credit	(2)	(2)	(2)
Amortization of settlement charges	2	1	1
Net periodic pension costs	(6)	(6)
Service cost	6	6	9
Pension Plan | Piedmont
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	4	3
Interest cost on projected benefit obligation	9	9	8
Expected return on plan assets	(20)	(20)	(24)
Amortization of actuarial loss	3		5
Amortization of prior service credit	(7)	(7)	(7)
Amortization of settlement charges	5	4	7
Net periodic pension costs	(6)	(10)	(6)
Service cost	4	4	5
Pension Plan | Parent
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost on projected benefit obligation	325	344	249
Expected return on plan assets	(613)	(588)	(558)
Amortization of actuarial loss	36	10	81
Amortization of prior service credit	(13)	(14)	(18)
Amortization of settlement charges	32	19	32
MRVA method change			24
Net periodic pension costs	(119)	(112)	(38)
Service cost	114	117	152
Other Post-Retirement Benefit Plans
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	2	2	3
Interest cost on projected benefit obligation	17	22	17
Expected return on plan assets	(11)	(11)	(10)
Amortization of actuarial loss	(6)	(6)	2
Amortization of prior service credit	(21)	(23)	(8)
Net periodic pension costs	(19)	(16)	4
Amortization of regulatory asset	4	4	4
Other Post-Retirement Benefit Plans | Duke Energy Carolinas
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost		1	1
Interest cost on projected benefit obligation	3	5	4
Expected return on plan assets	(8)	(7)	(6)
Amortization of actuarial loss	(2)	(3)
Amortization of prior service credit	(4)	(5)	(3)
Net periodic pension costs	(11)	(9)	(4)
Other Post-Retirement Benefit Plans | Progress Energy
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost on projected benefit obligation	7	9	7
Amortization of actuarial loss	8	8	1
Amortization of prior service credit	(11)	(11)	(2)
Net periodic pension costs	4	6	6
Other Post-Retirement Benefit Plans | Duke Energy Progress
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost on projected benefit obligation	4	5	4
Amortization of actuarial loss	6	5	1
Amortization of prior service credit	(6)	(6)	(1)
Net periodic pension costs	4	4	4
Other Post-Retirement Benefit Plans | Duke Energy Florida
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost on projected benefit obligation	3	4	3
Amortization of actuarial loss	2	2	1
Amortization of prior service credit	(5)	(5)	(1)
Net periodic pension costs		1	3
Other Post-Retirement Benefit Plans | Duke Energy Ohio
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost on projected benefit obligation	1	1	1
Amortization of actuarial loss	(2)	(2)
Net periodic pension costs	(1)	(1)	1
Amortization of regulatory asset	1	1	1
Other Post-Retirement Benefit Plans | Duke Energy Indiana
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost on projected benefit obligation	1	1	1
Amortization of actuarial loss	(4)	(3)
Amortization of prior service credit	(5)	(5)
Net periodic pension costs	(8)	(7)	1
Other Post-Retirement Benefit Plans | Piedmont
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Interest cost on projected benefit obligation	1	1	1
Expected return on plan assets	(2)	(2)	(2)
Amortization of prior service credit			(2)
Net periodic pension costs	$ (1)	$ (1)	$ (3)

Employee Benefit Plans (Amounts

Employee Benefit Plans (Amounts Recognized in Accumulated Other Comprehensive Income and Regulatory Assets and Liabilities) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated other comprehensive (income) loss
Net amount recognized in accumulated other comprehensive income	[1]	$ (8)	$ 1	$ 19
Progress Energy
Accumulated other comprehensive (income) loss
Net amount recognized in accumulated other comprehensive income		0	2	$ (5)
Pension Plan
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		147	5
Accumulated other comprehensive (income) loss
Deferred income tax benefit		3
Amortization of prior year service credit		1
Amortization of prior year service credit		(12)	(2)
Net amount recognized in accumulated other comprehensive income		(8)	(2)
Pension Plan | Duke Energy Carolinas
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		39	(14)
Pension Plan | Progress Energy
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		33	8
Accumulated other comprehensive (income) loss
Amortization of prior year service credit		1
Net amount recognized in accumulated other comprehensive income		1
Pension Plan | Duke Energy Progress
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		1
Pension Plan | Duke Energy Florida
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		31	9
Pension Plan | Duke Energy Ohio
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		11	(3)
Pension Plan | Duke Energy Indiana
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		6	(2)
Accumulated other comprehensive (income) loss
Amortization of prior year service credit		(2)
Net amount recognized in accumulated other comprehensive income		(2)
Pension Plan | Piedmont
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		16	13
Other Post-Retirement Benefit Plans
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		(42)	73
Regulatory liabilities, net (decrease) increase		(76)	41
Accumulated other comprehensive (income) loss
Amortization of prior year service credit			1
Amortization of prior year actuarial gain		1
Net amount recognized in accumulated other comprehensive income		1	1
Other Post-Retirement Benefit Plans | Duke Energy Carolinas
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		(62)	79
Regulatory liabilities, net (decrease) increase		(71)	62
Other Post-Retirement Benefit Plans | Progress Energy
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		23	(7)
Regulatory liabilities, net (decrease) increase		12
Accumulated other comprehensive (income) loss
Amortization of prior year actuarial gain			(1)
Net amount recognized in accumulated other comprehensive income			(1)
Other Post-Retirement Benefit Plans | Duke Energy Progress
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		17	(5)
Regulatory liabilities, net (decrease) increase		12
Other Post-Retirement Benefit Plans | Duke Energy Florida
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		5
Other Post-Retirement Benefit Plans | Duke Energy Ohio
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		(1)	(2)
Regulatory liabilities, net (decrease) increase		(3)	(4)
Other Post-Retirement Benefit Plans | Duke Energy Indiana
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase		(3)	(2)
Regulatory liabilities, net (decrease) increase		$ (12)	(8)
Other Post-Retirement Benefit Plans | Piedmont
Amounts Recognized in Regulatory Assets and Liabilities [Abstract]
Regulatory assets, net increase			$ 1
[1]Net of income tax expense of app roximately $70 million, $40 million and $52 million for the years ended December 31, 2024, 2023 and 2022, respectively.

Employee Benefit Plans (Project

Employee Benefit Plans (Projected Benefit Obligations Reconciliation of Funded Status to Net Amount Recognized) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	$ 6,299	$ 6,358
Service cost	107	110
Interest cost	325	344
Actuarial (gain)/loss	(106)	94
Benefits paid	(645)	(607)
Obligation at measurement date	5,980	6,299	$ 6,358
Accumulated Benefit Obligation at measurement date	5,948	6,267
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	7,162	6,993
Employer contributions	100	100	58
Actual return on plan assets	270	676
Benefits paid	(645)	(607)
Plan assets at measurement date	6,887	7,162	6,993
Funded status of plan	907	863
Pension Plan | Nonqualified Plan
Change in Projected Benefit Obligation [Rollforward]
Benefits paid	(30)
Obligation at measurement date	203
Accumulated Benefit Obligation at measurement date	203
Change in Fair Value of Plan Assets [Rollforward]
Employer contributions	30
Pension Plan | Duke Energy Carolinas
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	1,514	1,554
Service cost	36	36
Interest cost	78	84	59
Actuarial (gain)/loss	(13)	11
Benefits paid	(177)	(177)
Transfers	(6)	(6)
Obligation at measurement date	1,444	1,514	1,554
Accumulated Benefit Obligation at measurement date	1,444	1,517
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	1,853	1,815
Employer contributions	26	26	15
Actual return on plan assets	73	183
Benefits paid	(177)	(177)
Transfers	6	6
Plan assets at measurement date	1,781	1,853	1,815
Funded status of plan	337	339
Pension Plan | Duke Energy Carolinas | Nonqualified Plan
Change in Projected Benefit Obligation [Rollforward]
Benefits paid	(2)
Obligation at measurement date	8
Accumulated Benefit Obligation at measurement date	8
Change in Fair Value of Plan Assets [Rollforward]
Employer contributions	2
Pension Plan | Progress Energy
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	1,990	1,975
Service cost	30	30
Interest cost	103	107	77
Actuarial (gain)/loss	(50)	47
Benefits paid	(198)	(159)
Transfers		10
Obligation at measurement date	1,875	1,990	1,975
Accumulated Benefit Obligation at measurement date	1,861	1,975
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	2,453	2,371
Employer contributions	23	22	13
Actual return on plan assets	98	229
Benefits paid	(198)	(159)
Transfers		(10)
Plan assets at measurement date	2,376	2,453	2,371
Funded status of plan	501	463
Pension Plan | Progress Energy | Nonqualified Plan
Change in Projected Benefit Obligation [Rollforward]
Benefits paid	(8)
Obligation at measurement date	72
Accumulated Benefit Obligation at measurement date	72
Change in Fair Value of Plan Assets [Rollforward]
Employer contributions	8
Pension Plan | Duke Energy Progress
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	911	909
Service cost	18	18
Interest cost	47	49	35
Actuarial (gain)/loss	(27)	18
Benefits paid	(111)	(80)
Transfers		3
Obligation at measurement date	838	911	909
Accumulated Benefit Obligation at measurement date	838	912
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	1,120	1,083
Employer contributions	14	13	8
Actual return on plan assets	46	107
Benefits paid	(111)	(80)
Transfers		(3)
Plan assets at measurement date	1,069	1,120	1,083
Funded status of plan	231	209
Pension Plan | Duke Energy Progress | Nonqualified Plan
Change in Projected Benefit Obligation [Rollforward]
Benefits paid	(3)
Obligation at measurement date	22
Accumulated Benefit Obligation at measurement date	22
Change in Fair Value of Plan Assets [Rollforward]
Employer contributions	3
Pension Plan | Duke Energy Florida
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	1,069	1,055
Service cost	12	12
Interest cost	56	57	41
Actuarial (gain)/loss	(22)	29
Benefits paid	(88)	(78)
Transfers		6
Obligation at measurement date	1,027	1,069	1,055
Accumulated Benefit Obligation at measurement date	1,013	1,053
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	1,316	1,271
Employer contributions	9	9	5
Actual return on plan assets	53	120
Benefits paid	(88)	(78)
Transfers		(6)
Plan assets at measurement date	1,290	1,316	1,271
Funded status of plan	263	247
Pension Plan | Duke Energy Florida | Nonqualified Plan
Change in Projected Benefit Obligation [Rollforward]
Benefits paid	(3)
Obligation at measurement date	27
Accumulated Benefit Obligation at measurement date	27
Change in Fair Value of Plan Assets [Rollforward]
Employer contributions	3
Pension Plan | Duke Energy Ohio
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	325	333
Service cost	3	3
Interest cost	17	18	13
Actuarial (gain)/loss	(3)	2
Benefits paid	(33)	(31)
Obligation at measurement date	309	325	333
Accumulated Benefit Obligation at measurement date	304	317
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	326	323
Employer contributions	5	5	3
Actual return on plan assets	11	29
Benefits paid	(33)	(31)
Plan assets at measurement date	309	326	323
Funded status of plan		1
Pension Plan | Duke Energy Ohio | Nonqualified Plan
Change in Projected Benefit Obligation [Rollforward]
Obligation at measurement date	2
Accumulated Benefit Obligation at measurement date	2
Pension Plan | Duke Energy Indiana
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	496	499
Service cost	6	6
Interest cost	26	27	20
Actuarial (gain)/loss	(16)	4
Benefits paid	(41)	(40)
Obligation at measurement date	471	496	499
Accumulated Benefit Obligation at measurement date	466	494
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	514	501
Employer contributions	8	8	5
Actual return on plan assets	17	45
Benefits paid	(41)	(40)
Plan assets at measurement date	498	514	501
Funded status of plan	27	18
Pension Plan | Duke Energy Indiana | Nonqualified Plan
Change in Projected Benefit Obligation [Rollforward]
Obligation at measurement date	1
Accumulated Benefit Obligation at measurement date	1
Pension Plan | Piedmont
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	175	170
Service cost	4	3
Interest cost	9	9	8
Actuarial (gain)/loss	5	9
Benefits paid	(12)	(16)
Obligation at measurement date	181	175	170
Accumulated Benefit Obligation at measurement date	181	176
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	213	203
Employer contributions	3	3	2
Actual return on plan assets	10	23
Benefits paid	(12)	(16)
Plan assets at measurement date	214	213	203
Funded status of plan	33	38
Pension Plan | Piedmont | Nonqualified Plan
Change in Projected Benefit Obligation [Rollforward]
Obligation at measurement date	2
Accumulated Benefit Obligation at measurement date	2
Other Post-Retirement Benefit Plans
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	347	437
Service cost	2	2	3
Interest cost	17	22	17
Plan participants' contributions	3	4
Actuarial (gain)/loss	2	(10)
Benefits paid	(37)	(58)
Transfers		50
Obligation at measurement date	334	347	437
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	156	162
Employer contributions	27
Actual return on plan assets	7	19
Benefits paid	(37)	(58)
Tax refund	5	(13)
Plan participants' contributions	3	4
Employer contributions		42
Plan assets at measurement date	161	156	162
Defined Benefit Plan, Plan Assets, 401(h) Obligation Transferred To (From) Plan		0
Funded status of plan	(173)	(191)
Other Post-Retirement Benefit Plans | Duke Energy Carolinas
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	69	112
Service cost		1	1
Interest cost	3	5	4
Plan participants' contributions	1	1
Actuarial (gain)/loss	(2)	(2)
Benefits paid	(8)	(14)
Transfers		34
Obligation at measurement date	63	69	112
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	102	105
Employer contributions	4
Actual return on plan assets	4	8
Benefits paid	(8)	(14)
Tax refund	4	4
Plan participants' contributions	1	1
Employer contributions		6
Plan assets at measurement date	107	102	105
Defined Benefit Plan, Plan Assets, 401(h) Obligation Transferred To (From) Plan		(8)
Funded status of plan	44	33
Other Post-Retirement Benefit Plans | Progress Energy
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	146	168
Interest cost	7	9	7
Plan participants' contributions	1	1
Actuarial (gain)/loss	7	(10)
Benefits paid	(15)	(22)
Transfers		0
Obligation at measurement date	146	146	168
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	(1)
Employer contributions	14
Benefits paid	(15)	(22)
Tax refund	0	0
Plan participants' contributions	1	1
Employer contributions		20
Plan assets at measurement date	(1)	(1)
Defined Benefit Plan, Plan Assets, 401(h) Obligation Transferred To (From) Plan		0
Funded status of plan	(147)	(147)
Other Post-Retirement Benefit Plans | Duke Energy Progress
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	84	95
Interest cost	4	5	4
Plan participants' contributions		1
Actuarial (gain)/loss	5	(6)
Benefits paid	(6)	(11)
Transfers		0
Obligation at measurement date	87	84	95
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	(1)	(2)
Employer contributions	7
Benefits paid	(6)	(11)
Tax refund	0	0
Plan participants' contributions		1
Employer contributions		11
Plan assets at measurement date		(1)	(2)
Defined Benefit Plan, Plan Assets, 401(h) Obligation Transferred To (From) Plan		0
Funded status of plan	(87)	(85)
Other Post-Retirement Benefit Plans | Duke Energy Florida
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	60	69
Interest cost	3	4	3
Plan participants' contributions		1
Actuarial (gain)/loss	3	(4)
Benefits paid	(6)	(10)
Transfers		0
Obligation at measurement date	60	60	69
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	(1)	(2)
Employer contributions	7
Benefits paid	(6)	(10)
Tax refund	0	0
Plan participants' contributions		1
Employer contributions		10
Plan assets at measurement date		(1)	(2)
Defined Benefit Plan, Plan Assets, 401(h) Obligation Transferred To (From) Plan		0
Funded status of plan	(60)	(61)
Other Post-Retirement Benefit Plans | Duke Energy Ohio
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	19	20
Interest cost	1	1	1
Actuarial (gain)/loss		1
Benefits paid	(2)	(3)
Transfers		0
Obligation at measurement date	18	19	20
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	7	7
Employer contributions	2
Actual return on plan assets		1
Benefits paid	(2)	(3)
Tax refund	0	0
Employer contributions		2
Plan assets at measurement date	7	7	7
Defined Benefit Plan, Plan Assets, 401(h) Obligation Transferred To (From) Plan		0
Funded status of plan	(11)	(12)
Other Post-Retirement Benefit Plans | Duke Energy Indiana
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	24	30
Interest cost	1	1	1
Actuarial (gain)/loss	(2)	(1)
Benefits paid	(3)	(6)
Transfers		0
Obligation at measurement date	20	24	30
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	3	3
Benefits paid	(3)	(6)
Tax refund	0	0
Employer contributions		6
Plan assets at measurement date		3	3
Defined Benefit Plan, Plan Assets, 401(h) Obligation Transferred To (From) Plan		0
Funded status of plan	(20)	(21)
Other Post-Retirement Benefit Plans | Piedmont
Change in Projected Benefit Obligation [Rollforward]
Obligation at prior measurement date	15	21
Interest cost	1	1	1
Actuarial (gain)/loss		1
Benefits paid	(1)	(2)
Transfers		6
Obligation at measurement date	15	15	21
Change in Fair Value of Plan Assets [Rollforward]
Plan assets at prior measurement date	27	31
Actual return on plan assets	3	4
Benefits paid	(1)	(2)
Tax refund	0	(7)
Employer contributions		1
Plan assets at measurement date	29	27	$ 31
Defined Benefit Plan, Plan Assets, 401(h) Obligation Transferred To (From) Plan		0
Funded status of plan	$ 14	$ 12

Employee Benefit Plans (Amoun_2

Employee Benefit Plans (Amounts Recognized in Consolidated Balance Sheets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Noncurrent pension liability	$ 434	$ 485
Regulatory assets	17,010	17,266
Regulatory liabilities	16,119	15,408
Duke Energy Carolinas
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Noncurrent pension liability	24	57
Regulatory assets	4,884	5,480
Regulatory liabilities	7,210	6,577
Progress Energy
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Noncurrent pension liability	254	266
Regulatory assets	8,265	8,091
Regulatory liabilities	5,780	5,501
Duke Energy Progress
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Noncurrent pension liability	141	146
Regulatory assets	5,181	5,488
Regulatory liabilities	4,918	4,675
Duke Energy Florida
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Noncurrent pension liability	92	98
Regulatory assets	3,086	2,603
Regulatory liabilities	862	826
Duke Energy Ohio
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Noncurrent pension liability	89	97
Regulatory assets	793	749
Regulatory liabilities	499	553
Duke Energy Indiana
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Noncurrent pension liability	82	115
Regulatory assets	1,153	996
Regulatory liabilities	1,587	1,668
Piedmont
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Noncurrent pension liability	7	8
Regulatory assets	579	571
Regulatory liabilities	1,024	1,086
Pension Plan
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	907	863
Net asset (liability) recognized	(907)	(863)
Regulatory assets	2,168	2,021
Accumulated other comprehensive income (loss)
Deferred income tax benefit	(24)	(27)
Prior service credit		(1)
Net actuarial gain	115	127
Net amounts recognized in accumulated other comprehensive income	91	99
Pension Plan | Duke Energy Carolinas
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	337	339
Net asset (liability) recognized	(337)	(339)
Regulatory assets	570	531
Pension Plan | Progress Energy
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	501	463
Net asset (liability) recognized	(501)	(463)
Regulatory assets	711	678
Accumulated other comprehensive income (loss)
Deferred income tax benefit	(1)	(1)
Net actuarial gain	4	3
Net amounts recognized in accumulated other comprehensive income	3	2
Pension Plan | Duke Energy Progress
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	231	209
Net asset (liability) recognized	(231)	(209)
Regulatory assets	354	353
Pension Plan | Duke Energy Florida
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	263	247
Net asset (liability) recognized	(263)	(247)
Regulatory assets	356	325
Pension Plan | Duke Energy Ohio
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	74	74
Noncurrent pension liability	74	73
Net asset (liability) recognized		(1)
Regulatory assets	100	89
Pension Plan | Duke Energy Indiana
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	101	105
Noncurrent pension liability	74	87
Net asset (liability) recognized	(27)	(18)
Regulatory assets	182	176
Accumulated other comprehensive income (loss)
Net actuarial gain		2
Net amounts recognized in accumulated other comprehensive income		2
Pension Plan | Piedmont
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	33	38
Net asset (liability) recognized	(33)	(38)
Regulatory assets	113	97
Other Post-Retirement Benefit Plans
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Current pension liability	8	12
Noncurrent pension liability	165	179
Net asset (liability) recognized	173	191
Regulatory assets	81	123
Regulatory liabilities	154	230
Accumulated other comprehensive income (loss)
Deferred income tax expense	3	3
Net actuarial gain	(12)	(13)
Net amounts recognized in accumulated other comprehensive income	(9)	(10)
Other Post-Retirement Benefit Plans | Duke Energy Carolinas
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	44	61
Current pension liability		3
Noncurrent pension liability		25
Net asset (liability) recognized	(44)	(33)
Regulatory assets	17	79
Regulatory liabilities	35	106
Other Post-Retirement Benefit Plans | Progress Energy
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Current pension liability	5	5
Noncurrent pension liability	142	142
Net asset (liability) recognized	147	147
Regulatory assets	62	39
Regulatory liabilities	12
Accumulated other comprehensive income (loss)
Net actuarial gain	(1)	(1)
Net amounts recognized in accumulated other comprehensive income	(1)	(1)
Other Post-Retirement Benefit Plans | Duke Energy Progress
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Current pension liability	3	3
Noncurrent pension liability	84	82
Net asset (liability) recognized	87	85
Regulatory assets	46	29
Regulatory liabilities	12
Other Post-Retirement Benefit Plans | Duke Energy Florida
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Current pension liability	2	2
Noncurrent pension liability	58	59
Net asset (liability) recognized	60	61
Regulatory assets	16	11
Other Post-Retirement Benefit Plans | Duke Energy Ohio
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	1	1
Current pension liability	1	1
Noncurrent pension liability	11	12
Net asset (liability) recognized	11	12
Regulatory assets	1	2
Regulatory liabilities	14	17
Other Post-Retirement Benefit Plans | Duke Energy Indiana
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Noncurrent pension liability	20	21
Net asset (liability) recognized	20	21
Regulatory assets	20	23
Regulatory liabilities	62	74
Other Post-Retirement Benefit Plans | Piedmont
Amounts Recognized in Consolidated Balance Sheets [Abstract]
Prefunded pension	14	12
Net asset (liability) recognized	(14)	(12)
Regulatory assets	$ 1	$ 1

Employee Benefit Plans (Informa

Employee Benefit Plans (Information For Plans with Accumulated Benefit Obligation in Excess of Plan Assets) (Details) - Pension Plan - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Duke Energy Ohio
Information For Plans With Accumulated Benefit Obligation In Excess Of Plan Assets [Abstract]
Projected benefit obligation	$ 106	$ 105
Accumulated benefit obligation	101	100
Fair value of plan assets	32	31
Duke Energy Indiana
Information For Plans With Accumulated Benefit Obligation In Excess Of Plan Assets [Abstract]
Projected benefit obligation	203	208
Accumulated benefit obligation	197	203
Fair value of plan assets	$ 128	$ 121

Employee Benefit Plans (Assumpt

Employee Benefit Plans (Assumptions Used For Pension Benefits Accounting) (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan
Benefit Obligations
Discount rate (as a percent)	5.70%	5.40%	5.60%
Interest crediting rate (as a percent)	4.78%	4.15%	4.35%
Net Periodic Benefit Cost
Interest crediting rate (as a percent)	4.15%	4.35%	4%
Expected long-term rate of return on plan assets (as a percent)			6.50%
Pension Plan | Minimum
Benefit Obligations
Salary increase (as a percent)	3.50%	3.50%	3.50%
Net Periodic Benefit Cost
Discount rate (as a percent)	5%		2.90%
Salary increase (as a percent)	3.50%	3.50%	3.50%
Expected long-term rate of return on plan assets (as a percent)	8.50%	6.50%
Pension Plan | Maximum
Benefit Obligations
Salary increase (as a percent)	4%	4%	4%
Net Periodic Benefit Cost
Discount rate (as a percent)	5.40%	5.60%	5.70%
Salary increase (as a percent)	4%	4%	4%
Expected long-term rate of return on plan assets (as a percent)	7%	8.25%
Other Post-Retirement Benefit Plans
Benefit Obligations
Discount rate (as a percent)	5.70%	5.40%	5.60%
Net Periodic Benefit Cost
Discount rate (as a percent)	5.40%	5.60%	2.90%
Expected long-term rate of return on plan assets (as a percent)		8.25%	6.50%
Other Post-Retirement Benefit Plans | Minimum
Net Periodic Benefit Cost
Expected long-term rate of return on plan assets (as a percent)	6.50%	6.50%
Other Post-Retirement Benefit Plans | Maximum
Net Periodic Benefit Cost
Expected long-term rate of return on plan assets (as a percent)	8.25%

Employee Benefit Plans (Expecte

Employee Benefit Plans (Expected Benefit Payments) (Details) $ in Millions	Dec. 31, 2024 USD ($)
Pension Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	$ 628
2026	606
2027	586
2028	572
2029	546
2030-2034	2,407
Pension Plan | Duke Energy Carolinas
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	173
2026	161
2027	153
2028	149
2029	138
2030-2034	567
Pension Plan | Progress Energy
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	183
2026	179
2027	175
2028	173
2029	167
2030-2034	762
Pension Plan | Duke Energy Progress
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	98
2026	91
2027	87
2028	85
2029	79
2030-2034	338
Pension Plan | Duke Energy Florida
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	84
2026	87
2027	87
2028	87
2029	87
2030-2034	420
Pension Plan | Duke Energy Ohio
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	31
2026	30
2027	29
2028	29
2029	29
2030-2034	129
Pension Plan | Duke Energy Indiana
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	43
2026	42
2027	42
2028	41
2029	42
2030-2034	197
Pension Plan | Piedmont
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	19
2026	18
2027	17
2028	17
2029	16
2030-2034	73
Other Post-Retirement Benefit Plans
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	52
2026	45
2027	41
2028	38
2029	35
2030-2034	124
Other Post-Retirement Benefit Plans | Duke Energy Carolinas
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	13
2026	11
2027	9
2028	8
2029	7
2030-2034	21
Other Post-Retirement Benefit Plans | Progress Energy
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	18
2026	16
2027	16
2028	15
2029	14
2030-2034	59
Other Post-Retirement Benefit Plans | Duke Energy Progress
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	11
2026	10
2027	9
2028	9
2029	8
2030-2034	35
Other Post-Retirement Benefit Plans | Duke Energy Florida
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	8
2026	7
2027	7
2028	6
2029	6
2030-2034	24
Other Post-Retirement Benefit Plans | Duke Energy Ohio
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	3
2026	3
2027	2
2028	2
2029	2
2030-2034	6
Other Post-Retirement Benefit Plans | Duke Energy Indiana
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	4
2026	3
2027	3
2028	3
2029	2
2030-2034	8
Other Post-Retirement Benefit Plans | Piedmont
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2025	2
2026	2
2027	2
2028	2
2029	2
2030-2034	$ 6

Employee Benefit Plans (Assumed

Employee Benefit Plans (Assumed Health Care Cost Trend Rates) (Details)	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate assumed for next year (as a percent)	7%	6.50%
Rate to which the cost trend is assumed to decline (the ultimate trend rate) (as a percent)	4.75%	4.75%

Employee Benefit Plans (Target

Employee Benefit Plans (Target and Actual Asset Allocations) (Details)	Dec. 31, 2024	Dec. 31, 2023
Master Trust
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	100%
Actual asset allocation	100%	100%
Master Trust | Global equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	45%
Actual asset allocation	44%	45%
Master Trust | Global private equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	2%
Actual asset allocation	1%	2%
Master Trust | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	35%
Actual asset allocation	33%	35%
Master Trust | Return seeking debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	7%
Actual asset allocation	7%	6%
Master Trust | Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	4%
Actual asset allocation	5%	4%
Master Trust | Real estate and cash
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	7%
Actual asset allocation	10%	8%
OPEB
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	100%
Actual asset allocation	100%	100%
OPEB | U.S. equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	29%
Actual asset allocation	34%	30%
OPEB | Non-U.S. equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	15%
Actual asset allocation	15%	15%
OPEB | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	47%
Actual asset allocation	31%	30%
OPEB | Real estate
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	5%
Actual asset allocation	7%	7%
OPEB | Cash
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	4%
Actual asset allocation	13%	18%
Other Post-Retirement Benefit Plans | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	100%
Actual asset allocation	100%	100%
Other Post-Retirement Benefit Plans | Master Trust | Global equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	14%
Actual asset allocation	15%	14%
Other Post-Retirement Benefit Plans | Master Trust | Global private equity securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	1%
Other Post-Retirement Benefit Plans | Master Trust | Debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	80%
Actual asset allocation	79%	79%
Other Post-Retirement Benefit Plans | Master Trust | Return seeking debt securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	2%
Actual asset allocation	2%	2%
Other Post-Retirement Benefit Plans | Master Trust | Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	1%
Actual asset allocation		2%
Other Post-Retirement Benefit Plans | Master Trust | Real estate and cash
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	2%
Actual asset allocation	4%	3%

Employee Benefit Plans (Fair Va

Employee Benefit Plans (Fair Value Measurements of Plan Assets - Master Retirement Trust) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 6,969	$ 7,241
OPEB
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 20	$ 20
Duke Energy Carolinas | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Allocated assets (as a percent)	27%	27%
Progress Energy | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Allocated assets (as a percent)	33%	33%
Duke Energy Progress | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Allocated assets (as a percent)	15%	15%
Duke Energy Florida | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Allocated assets (as a percent)	18%	18%
Duke Energy Ohio | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Allocated assets (as a percent)	5%	5%
Duke Energy Indiana | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Allocated assets (as a percent)	7%	7%
Piedmont | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Allocated assets (as a percent)	3%	3%
Equity securities | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 2,461	$ 2,221
Equity securities | OPEB
Defined Benefit Plan Disclosure [Line Items]
Total assets	10	9
Corporate debt securities | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	2,415	2,807
Short-term investment funds | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	310	233
Partnership interests | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	68	76
Hedge funds | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	164	164
Real estate | OPEB
Defined Benefit Plan Disclosure [Line Items]
Total assets	1	1
U.S. government bonds | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	1,398	1,571
Governments bonds – foreign | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	128	107
Cash | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	15	7
Government and commercial mortgage-backed securities | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	1	1
Net pending transactions and other investments | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	9	54
Cash and cash equivalents | OPEB
Defined Benefit Plan Disclosure [Line Items]
Total assets	3	4
Debt securities | OPEB
Defined Benefit Plan Disclosure [Line Items]
Total assets	6	6
Level 1 | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	2,242	2,042
Level 1 | Equity securities | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	2,216	1,995
Level 1 | Cash | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	15	7
Level 1 | Net pending transactions and other investments | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	11	40
Level 2 | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	4,481	4,944
Level 2 | OPEB
Defined Benefit Plan Disclosure [Line Items]
Total assets	20	20
Level 2 | Equity securities | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	231	211
Level 2 | Equity securities | OPEB
Defined Benefit Plan Disclosure [Line Items]
Total assets	10	9
Level 2 | Corporate debt securities | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	2,415	2,807
Level 2 | Short-term investment funds | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	310	233
Level 2 | Real estate | OPEB
Defined Benefit Plan Disclosure [Line Items]
Total assets	1	1
Level 2 | U.S. government bonds | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	1,398	1,571
Level 2 | Governments bonds – foreign | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	128	107
Level 2 | Government and commercial mortgage-backed securities | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	1	1
Level 2 | Net pending transactions and other investments | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	(2)	14
Level 2 | Cash and cash equivalents | OPEB
Defined Benefit Plan Disclosure [Line Items]
Total assets	3	4
Level 2 | Debt securities | OPEB
Defined Benefit Plan Disclosure [Line Items]
Total assets	6	6
Level 3
Defined Benefit Plan Disclosure [Line Items]
Total assets	68	76	$ 62
Level 3 | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	68	76
Level 3 | Partnership interests | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	68	76
Not Categorized | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	178	179
Not Categorized | Equity securities | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	14	15
Not Categorized | Hedge funds | Master Trust
Defined Benefit Plan Disclosure [Line Items]
Total assets	$ 164	$ 164

Employee Benefit Plans (Reconci

Employee Benefit Plans (Reconciliation of Assets Measured at Fair Value on a Recurring Basis) (Details) - Level 3 - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Plan assets at prior measurement date	$ 76	$ 62
Sales	(10)	(8)
Total gains and other, net	2	22
Plan assets at measurement date	$ 68	$ 76

Employee Benefit Plans (Employe

Employee Benefit Plans (Employee Savings Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 257	$ 238	$ 246
Duke Energy Carolinas
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	81	75	76
Progress Energy
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	72	62	65
Duke Energy Progress
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	43	40	43
Duke Energy Florida
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	29	22	22
Duke Energy Ohio
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	6	6	6
Duke Energy Indiana
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	13	13	12
Piedmont
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 14	$ 13	$ 13

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Line Items]
Alternative minimum tax	$ 133	$ 69
Net proceeds related to the sale of certain tax credits	558	28	$ 0
Duke Energy Carolinas
Income Tax Disclosure [Line Items]
Deferred tax asset	449
Tax credits	558
Net proceeds related to the sale of certain tax credits	440	0	0
Duke Energy Carolinas | Sale of Nuclear Power PTCs
Income Tax Disclosure [Line Items]
Increase (decrease) in deferred tax asset	428
Duke Energy Progress
Income Tax Disclosure [Line Items]
Deferred tax asset	73
Net proceeds related to the sale of certain tax credits	71	0	0
Duke Energy Progress | Sale of Nuclear Power PTCs
Income Tax Disclosure [Line Items]
Increase (decrease) in deferred tax asset	65
Duke Energy Florida
Income Tax Disclosure [Line Items]
Net proceeds related to the sale of certain tax credits	47	$ 28	$ 0
Duke Energy Florida | Sale of Nuclear Power PTCs
Income Tax Disclosure [Line Items]
Increase (decrease) in deferred tax asset	$ 43

Income Taxes (Components of Inc

Income Taxes (Components of Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current income taxes
Federal	$ (365)	$ 71	$ 1
State	31	1	(8)
Foreign	2	3	4
Total current income taxes	(332)	75	(3)
Deferred income taxes
Federal	858	319	328
State	81	53	(14)
Total deferred income taxes	939	372	314
ITC amortization	(17)	(9)	(11)
Income tax expense from continuing operations	590	438	300
Tax benefit from discontinued operations	(50)	(359)	(503)
Total income tax expense included in Consolidated Statements of Operations	540	79	(203)
Net operating loss carry forward	523	214	550
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]
Domestic	5,145	4,700	3,991
Foreign	49	67	87
Income from continuing operations before income taxes	5,194	4,767	4,078
Alternative minimum tax	133	69
Duke Energy Carolinas
Current income taxes
Federal	178	173	(71)
State	75	22	(13)
Total current income taxes	253	195	(84)
Deferred income taxes
Federal	10	(43)	230
State	(25)	(7)	(16)
Total deferred income taxes	(15)	(50)	214
ITC amortization	(12)	(4)	(4)
Income tax expense from continuing operations	226	141	126
Total income tax expense included in Consolidated Statements of Operations	226	141	126
Net operating loss carry forward	47	2	97
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]
Income from continuing operations before income taxes	2,109	1,611	1,726
Progress Energy
Current income taxes
Federal	359	459	(13)
State	34	38	(3)
Total current income taxes	393	497	(16)
Deferred income taxes
Federal	(22)	(154)	310
State	59	38	59
Total deferred income taxes	37	(116)	369
ITC amortization	(4)	(4)	(5)
Income tax expense from continuing operations	426	377	348
Total income tax expense included in Consolidated Statements of Operations	426	377	348
Net operating loss carry forward	85	116	128
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]
Income from continuing operations before income taxes	2,597	2,333	2,176
Duke Energy Progress
Current income taxes
Federal	373	198	37
State	40	4
Total current income taxes	413	202	37
Deferred income taxes
Federal	(215)	(69)	118
State	(6)	19	7
Total deferred income taxes	(221)	(50)	125
ITC amortization	(3)	(3)	(4)
Income tax expense from continuing operations	189	149	158
Total income tax expense included in Consolidated Statements of Operations	189	149	158
Net operating loss carry forward	66	59	9
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]
Income from continuing operations before income taxes	1,353	1,147	1,166
Proceeds from sale of PTCs		28
Duke Energy Florida
Current income taxes
Federal	14	279	(37)
State	(12)	71	(23)
Total current income taxes	2	350	(60)
Deferred income taxes
Federal	181	(89)	201
State	86		84
Total deferred income taxes	267	(89)	285
ITC amortization	(1)
Income tax expense from continuing operations	268	261	225
Total income tax expense included in Consolidated Statements of Operations	268	261	225
Net operating loss carry forward	30	5	111
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]
Income from continuing operations before income taxes	1,329	1,277	1,134
Proceeds from sale of PTCs		28
Duke Energy Ohio
Current income taxes
Federal	52	(46)	(2)
State	3	(3)	1
Total current income taxes	55	(49)	(1)
Deferred income taxes
Federal	8	111	(22)
State	1	1	3
Total deferred income taxes	9	112	(19)
ITC amortization			(1)
Income tax expense from continuing operations	64	63	(21)
Total income tax expense included in Consolidated Statements of Operations	64	63	(21)
Net operating loss carry forward	26	22	7
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]
Income from continuing operations before income taxes	405	397	281
Duke Energy Indiana
Current income taxes
Federal	70	10	38
State	12	9	2
Total current income taxes	82	19	40
Deferred income taxes
Federal	(19)	77	(63)
State	8	14
Total deferred income taxes	(11)	91	(63)
ITC amortization			(1)
Income tax expense from continuing operations	71	110	(24)
Total income tax expense included in Consolidated Statements of Operations	71	110	(24)
Net operating loss carry forward	8	54	13
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]
Income from continuing operations before income taxes	512	607	113
Piedmont
Current income taxes
Federal	40	44	32
State	(6)	3	2
Total current income taxes	34	47	34
Deferred income taxes
Federal	40	25	12
State	21	12	(7)
Total deferred income taxes	61	37	5
Income tax expense from continuing operations	95	84	39
Total income tax expense included in Consolidated Statements of Operations	95	84	39
Net operating loss carry forward	8	15	12
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract]
Income from continuing operations before income taxes	$ 508	$ 463	$ 362

Income Taxes (Effective Tax Rat

Income Taxes (Effective Tax Rates) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Income tax expense, computed at the statutory rate of 21%	$ 1,090	$ 1,001	$ 856
State income tax, net of federal income tax effect	88	43	(17)
Amortization of EDIT	(436)	(388)	(481)
AFUDC equity income	(48)	(41)	(41)
AFUDC equity depreciation	38	37	36
Production tax credits	(46)
Other tax credits	(43)	(63)	(43)
Valuation allowance		(114)
Other items, net	(53)	(37)	(10)
Income tax expense from continuing operations	$ 590	$ 438	$ 300
Effective tax rate (as a percent)	11.40%	9.20%	7.40%
Domestic Tax Jurisdiction
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Favorable adjustment amounts		$ 114
State
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Favorable adjustment amounts		6
Duke Energy Carolinas
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Income tax expense, computed at the statutory rate of 21%	$ 443	338	$ 362
State income tax, net of federal income tax effect	40	12	(23)
Amortization of EDIT	(225)	(197)	(195)
AFUDC equity income	(24)	(19)	(20)
AFUDC equity depreciation	19	18	18
Other tax credits	(23)	(11)	(12)
Other items, net	(4)		(4)
Income tax expense from continuing operations	$ 226	$ 141	$ 126
Effective tax rate (as a percent)	10.70%	8.80%	7.30%
Progress Energy
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Income tax expense, computed at the statutory rate of 21%	$ 545	$ 490	$ 457
State income tax, net of federal income tax effect	73	60	44
Amortization of EDIT	(121)	(114)	(133)
AFUDC equity income	(16)	(14)	(14)
AFUDC equity depreciation	14	13	12
Production tax credits	(46)
Other tax credits	(16)	(46)	(16)
Other items, net	(7)	(12)	(2)
Income tax expense from continuing operations	$ 426	$ 377	$ 348
Effective tax rate (as a percent)	16.40%	16.20%	16%
Duke Energy Progress
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Income tax expense, computed at the statutory rate of 21%	$ 284	$ 241	$ 245
State income tax, net of federal income tax effect	27	18	6
Amortization of EDIT	(98)	(91)	(74)
AFUDC equity income	(13)	(11)	(11)
AFUDC equity depreciation	7	6	6
Other tax credits	(12)	(7)	(9)
Other items, net	(6)	(7)	(5)
Income tax expense from continuing operations	$ 189	$ 149	$ 158
Effective tax rate (as a percent)	14%	13%	13.60%
Duke Energy Florida
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Income tax expense, computed at the statutory rate of 21%	$ 279	$ 268	$ 238
State income tax, net of federal income tax effect	58	56	48
Amortization of EDIT	(23)	(23)	(59)
AFUDC equity income	(3)	(3)	(3)
AFUDC equity depreciation	7	7	6
Production tax credits	(46)
Other tax credits	(4)	(39)	(7)
Other items, net		(5)	2
Income tax expense from continuing operations	$ 268	$ 261	$ 225
Effective tax rate (as a percent)	20.20%	20.40%	19.80%
Duke Energy Ohio
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Income tax expense, computed at the statutory rate of 21%	$ 85	$ 83	$ 59
State income tax, net of federal income tax effect	3	(2)	3
Amortization of EDIT	(23)	(22)	(79)
AFUDC equity income	(1)	(2)	(1)
AFUDC equity depreciation	2	2	1
Other tax credits	(1)	(2)	(2)
Other items, net	(1)	6	(2)
Income tax expense from continuing operations	$ 64	$ 63	$ (21)
Effective tax rate (as a percent)	15.80%	15.90%	(7.50%)
Duke Energy Indiana
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Income tax expense, computed at the statutory rate of 21%	$ 108	$ 128	$ 24
State income tax, net of federal income tax effect	16	18	2
Amortization of EDIT	(49)	(33)	(48)
AFUDC equity income	(3)	(2)	(2)
AFUDC equity depreciation	4	4	4
Other tax credits	(2)	(2)	(3)
Other items, net	(3)	(3)	(1)
Income tax expense from continuing operations	$ 71	$ 110	$ (24)
Effective tax rate (as a percent)	13.90%	18.10%	(21.20%)
Piedmont
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract]
Income tax expense, computed at the statutory rate of 21%	$ 107	$ 97	$ 76
State income tax, net of federal income tax effect	12	12	(4)
Amortization of EDIT	(18)	(20)	(23)
AFUDC equity income	(4)	(4)	(2)
Other tax credits	(2)	(1)	(8)
Income tax expense from continuing operations	$ 95	$ 84	$ 39
Effective tax rate (as a percent)	18.70%	18.10%	10.80%

Income Taxes (Deferred Income T

Income Taxes (Deferred Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Tax Assets, Gross [Abstract]
Deferred credits and other liabilities	$ 284	$ 327
Lease obligations	430	418
Pension, post-retirement and other employee benefits	89	65
Progress Energy merger purchase accounting adjustments	227	260
Tax credits and NOL carryforwards	3,845	4,489
Other	35	102
Valuation allowance	(517)	(544)
Total deferred income tax assets	4,393	5,117
Deferred Tax Liabilities, Gross [Abstract]
Investments and other assets	(2,114)	(1,812)
Accelerated depreciation rates	(11,942)	(11,969)
Regulatory assets and deferred debits, net	(1,761)	(1,892)
Total deferred income tax liabilities	(15,817)	(15,673)
Net deferred income tax liabilities	(11,424)	(10,556)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	3,845	4,489
Valuation allowance	517	544
Net operating loss carry forward	523	214	$ 550
General Business Credits
Deferred Tax Assets, Gross [Abstract]
Tax credits and NOL carryforwards	2,186
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	2,186
Foreign Tax Credit
Deferred Tax Assets, Gross [Abstract]
Valuation allowance	(404)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Valuation allowance	404
Foreign Tax Credit | Federal
Deferred Tax Assets, Gross [Abstract]
Tax credits and NOL carryforwards	615
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	615
State Carryforward And Credits | State
Deferred Tax Assets, Gross [Abstract]
Tax credits and NOL carryforwards	316
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	316
Corporate AMT Credit Cards
Deferred Tax Assets, Gross [Abstract]
Tax credits and NOL carryforwards	717
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	717
NOL Carryforwards | State
Deferred Tax Assets, Gross [Abstract]
Valuation allowance	(102)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Valuation allowance	102
NOL Carryforwards | Foreign
Deferred Tax Assets, Gross [Abstract]
Tax credits and NOL carryforwards	11
Valuation allowance	(11)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	11
Valuation allowance	11
Duke Energy Carolinas
Deferred Tax Assets, Gross [Abstract]
Deferred credits and other liabilities	217	194
Lease obligations	88	86
Pension, post-retirement and other employee benefits	(33)	(41)
Tax credits and NOL carryforwards	522	445
Other	11	29
Total deferred income tax assets	805	713
Deferred Tax Liabilities, Gross [Abstract]
Investments and other assets	(1,350)	(1,213)
Accelerated depreciation rates	(3,203)	(3,411)
Regulatory assets and deferred debits, net	(304)	(468)
Total deferred income tax liabilities	(4,857)	(5,092)
Net deferred income tax liabilities	(4,052)	(4,379)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	522	445
Net operating loss carry forward	47	2	97
Progress Energy
Deferred Tax Assets, Gross [Abstract]
Deferred credits and other liabilities	84	77
Lease obligations	265	256
Pension, post-retirement and other employee benefits	(23)	(22)
Tax credits and NOL carryforwards	783	686
Other	5	22
Total deferred income tax assets	1,114	1,019
Deferred Tax Liabilities, Gross [Abstract]
Investments and other assets	(724)	(596)
Accelerated depreciation rates	(4,608)	(4,557)
Regulatory assets and deferred debits, net	(1,045)	(1,063)
Total deferred income tax liabilities	(6,377)	(6,216)
Net deferred income tax liabilities	(5,263)	(5,197)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	783	686
Net operating loss carry forward	85	116	128
Duke Energy Progress
Deferred Tax Assets, Gross [Abstract]
Deferred credits and other liabilities	43	21
Lease obligations	179	179
Pension, post-retirement and other employee benefits	(1)	(1)
Tax credits and NOL carryforwards	312	230
Other	3	12
Total deferred income tax assets	536	441
Deferred Tax Liabilities, Gross [Abstract]
Investments and other assets	(671)	(520)
Accelerated depreciation rates	(1,624)	(1,823)
Regulatory assets and deferred debits, net	(585)	(658)
Total deferred income tax liabilities	(2,880)	(3,001)
Net deferred income tax liabilities	(2,344)	(2,560)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	312	230
Net operating loss carry forward	66	59	9
Duke Energy Florida
Deferred Tax Assets, Gross [Abstract]
Deferred credits and other liabilities	41	56
Lease obligations	86	77
Pension, post-retirement and other employee benefits	(26)	(25)
Tax credits and NOL carryforwards	449	425
Other	2	8
Total deferred income tax assets	552	541
Deferred Tax Liabilities, Gross [Abstract]
Investments and other assets	(69)	(91)
Accelerated depreciation rates	(3,047)	(2,778)
Regulatory assets and deferred debits, net	(460)	(405)
Total deferred income tax liabilities	(3,576)	(3,274)
Net deferred income tax liabilities	(3,024)	(2,733)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	449	425
Net operating loss carry forward	30	5	111
Duke Energy Ohio
Deferred Tax Assets, Gross [Abstract]
Deferred credits and other liabilities	17	13
Lease obligations	2	4
Pension, post-retirement and other employee benefits	6	5
Tax credits and NOL carryforwards	70	44
Other	4	5
Total deferred income tax assets	99	71
Deferred Tax Liabilities, Gross [Abstract]
Accelerated depreciation rates	(1,361)	(1,314)
Regulatory assets and deferred debits, net	(52)	(29)
Total deferred income tax liabilities	(1,413)	(1,343)
Net deferred income tax liabilities	(1,314)	(1,272)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	70	44
Net operating loss carry forward	26	22	7
Duke Energy Indiana
Deferred Tax Assets, Gross [Abstract]
Deferred credits and other liabilities	15	18
Lease obligations	12	15
Pension, post-retirement and other employee benefits	1	2
Tax credits and NOL carryforwards	145	154
Regulatory liabilities and deferred credits	10	47
Investments and other assets		1
Other		5
Total deferred income tax assets	183	242
Deferred Tax Liabilities, Gross [Abstract]
Accelerated depreciation rates	(1,677)	(1,678)
Total deferred income tax liabilities	(1,677)	(1,678)
Net deferred income tax liabilities	(1,494)	(1,436)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	145	154
Net operating loss carry forward	8	54	13
Piedmont
Deferred Tax Assets, Gross [Abstract]
Deferred credits and other liabilities	40	42
Lease obligations	2	3
Pension, post-retirement and other employee benefits	(2)	(5)
Tax credits and NOL carryforwards	57	50
Other	8	9
Total deferred income tax assets	105	99
Deferred Tax Liabilities, Gross [Abstract]
Investments and other assets	(48)	(37)
Accelerated depreciation rates	(1,019)	(944)
Regulatory assets and deferred debits, net	(56)	(51)
Total deferred income tax liabilities	(1,123)	(1,032)
Net deferred income tax liabilities	(1,018)	(933)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract]
Tax credits and NOL carryforwards	57	50
Net operating loss carry forward	$ 8	$ 15	$ 12

Income Taxes (Other Disclosures

Income Taxes (Other Disclosures) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits – January 1	$ 62	$ 65	$ 51
Gross decreases – tax positions in prior periods		(15)
Gross increases – current period tax positions	12	12	14
Total changes		(3)	14
Unrecognized tax benefits – December 31	74	62	65
Amount that if recognized, would affect the effective tax rate or regulatory liability	68
Valuation allowance	517	544
Foreign Tax Credit
Unrecognized Tax Benefits [Roll Forward]
Valuation allowance	404
Duke Energy Carolinas
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits – January 1	21	17	13
Gross increases – current period tax positions	4	4	4
Total changes		4	4
Unrecognized tax benefits – December 31	25	21	17
Amount that if recognized, would affect the effective tax rate or regulatory liability	24
Progress Energy
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits – January 1	24	19	15
Gross increases – current period tax positions	5	5	4
Total changes		5	4
Unrecognized tax benefits – December 31	29	24	19
Amount that if recognized, would affect the effective tax rate or regulatory liability	27
Duke Energy Progress
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits – January 1	18	13	10
Gross increases – current period tax positions	4	5	3
Total changes		5	3
Unrecognized tax benefits – December 31	22	18	13
Amount that if recognized, would affect the effective tax rate or regulatory liability	20
Duke Energy Florida
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits – January 1	6	5	4
Gross increases – current period tax positions	1	1	1
Total changes		1	1
Unrecognized tax benefits – December 31	7	6	5
Amount that if recognized, would affect the effective tax rate or regulatory liability	7
Duke Energy Ohio
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits – January 1	2	1	1
Gross increases – current period tax positions		1
Total changes		1
Unrecognized tax benefits – December 31	2	2	1
Amount that if recognized, would affect the effective tax rate or regulatory liability	2
Duke Energy Indiana
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits – January 1	3	2	2
Gross increases – current period tax positions		1
Total changes		1
Unrecognized tax benefits – December 31	3	3	2
Amount that if recognized, would affect the effective tax rate or regulatory liability	3
Piedmont
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits – January 1	11	9	4
Gross increases – current period tax positions	2	2	5
Total changes		2	5
Unrecognized tax benefits – December 31	13	$ 11	$ 9
Amount that if recognized, would affect the effective tax rate or regulatory liability	$ 11

Other Income and Expenses, Ne_2

Other Income and Expenses, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Component Of Other Income Expense Nonoperating [Line Items]
Interest income	$ 63	$ 29	$ 27
AFUDC equity	233	198	197
Post-in-service equity returns	52	39	34
Nonoperating income, other	313	332	134
Other income and expense, net	661	598	392
Duke Energy Carolinas
Component Of Other Income Expense Nonoperating [Line Items]
Interest income	9	10	2
AFUDC equity	113	91	98
Post-in-service equity returns	31	19	14
Nonoperating income, other	94	118	107
Other income and expense, net	247	238	221
Progress Energy
Component Of Other Income Expense Nonoperating [Line Items]
Interest income	18	14	24
AFUDC equity	74	67	68
Post-in-service equity returns	20	19	18
Nonoperating income, other	123	101	71
Other income and expense, net	235	201	181
Duke Energy Progress
Component Of Other Income Expense Nonoperating [Line Items]
Interest income	14	9	4
AFUDC equity	61	52	52
Post-in-service equity returns	20	19	18
Nonoperating income, other	48	44	40
Other income and expense, net	143	124	114
Duke Energy Florida
Component Of Other Income Expense Nonoperating [Line Items]
Interest income	4	7	20
AFUDC equity	13	15	16
Nonoperating income, other	69	56	38
Other income and expense, net	86	78	74
Duke Energy Ohio
Component Of Other Income Expense Nonoperating [Line Items]
Interest income	8	25	11
AFUDC equity	7	9	7
Post-in-service equity returns	1	1	1
Nonoperating income, other	3	6
Other income and expense, net	19	41	19
Duke Energy Indiana
Component Of Other Income Expense Nonoperating [Line Items]
Interest income	5	25	15
AFUDC equity	19	10	13
Post-in-service equity returns	1		1
Nonoperating income, other	37	41	7
Other income and expense, net	62	76	36
Piedmont
Component Of Other Income Expense Nonoperating [Line Items]
Interest income	19	19	19
AFUDC equity	21	21	11
Nonoperating income, other	14	17	16
Other income and expense, net	$ 54	$ 57	$ 46