NextEra Energy (NEE) 10-Q 26 Oct 17 2017 Q3 Quarterly report Financial data

Document Entity Information

Document Entity Information	9 Months Ended
	Sep. 30, 2017shares
Entity Information [Line Items]
Entity Registrant Name	NEXTERA ENERGY INC
Entity Central Index Key	753,308
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	470,397,581
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
FPL [Member]
Entity Information [Line Items]
Entity Registrant Name	FLORIDA POWER & LIGHT CO
Entity Central Index Key	37,634
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding	1,000

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
OPERATING REVENUES		$ 4,808	$ 4,805	$ 13,185	$ 12,457
OPERATING EXPENSES (INCOME)
Fuel, purchased power and interchange		1,176	1,217	3,093	3,105
Other operations and maintenance		769	833	2,400	2,474
Merger		2	123	17	129
Depreciation and amortization		1,070	983	2,576	2,262
Gains on disposal of a business/assets - net		(5)	(4)	(1,106)	(257)
Taxes other than income taxes and other - net		397	374	1,115	1,062
Total operating expenses - net		3,409	3,526	8,095	8,775
OPERATING INCOME		1,399	1,279	5,090	3,682
OTHER INCOME (DEDUCTIONS)
Interest expense		(381)	(369)	(1,171)	(1,480)
Benefits associated with differential membership interests - net		67	59	311	220
Equity in earnings of equity method investees		56	70	153	147
Allowance for equity funds used during construction		21	20	68	62
Interest income		20	23	59	61
Gains on disposal of investments and other property - net		15	9	64	36
Revaluation of contingent consideration		0	101	0	118
Other - net		23	15	7	21
Total other deductions - net		(179)	(72)	(509)	(815)
INCOME BEFORE INCOME TAXES		1,220	1,207	4,581	2,867
INCOME TAXES		364	418	1,329	879
Net Income (Loss)		856	789	3,252	1,988
LESS NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS		9	36	29	42
Net income (loss) attributable to NEE		$ 847	$ 753	$ 3,223	$ 1,946
Earnings per share of common stock:
Basic (in dollars per share)		$ 1.80	$ 1.63	$ 6.88	$ 4.21
Assuming dilution (in dollars per share)		1.79	1.62	6.83	4.19
Dividends per share of common stock (in dollars per share)		$ 0.9825	$ 0.87	$ 2.9475	$ 2.61
Weighted-average number of common shares outstanding:
Basic (in shares)		469.4	463.3	468.3	461.7
Assuming dilution (in shares)		473.5	466	472	464.7
FPL [Member]
OPERATING REVENUES		$ 3,477	$ 3,283	$ 9,095	$ 8,337
OPERATING EXPENSES (INCOME)
Fuel, purchased power and interchange		1,036	1,045	2,696	2,556
Other operations and maintenance		362	403	1,137	1,203
Depreciation and amortization		704	587	1,514	1,207
Taxes other than income taxes and other - net		353	327	975	908
Total operating expenses - net		2,455	2,362	6,322	5,874
OPERATING INCOME		1,022	921	2,773	2,463
OTHER INCOME (DEDUCTIONS)
Interest expense		(121)	(114)	(360)	(342)
Allowance for equity funds used during construction		20	17	55	55
Other - net		1	0	2	3
Total other deductions - net		(100)	(97)	(303)	(284)
INCOME BEFORE INCOME TAXES		922	824	2,470	2,179
INCOME TAXES		356	309	933	823
Net income (loss) attributable to NEE	[1]	$ 566	$ 515	$ 1,537	$ 1,356
[1]	FPL's comprehensive income is the same as reported net income.

CONDENSED CONSOLIDATED STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
NET INCOME	$ 856	$ 789	$ 3,252	$ 1,988
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX
Reclassification of unrealized losses on cash flow hedges from accumulated other comprehensive income (loss) to net income (net of $4, $3, $9 and $26 tax expense, respectively)	10	17	24	53
Net unrealized gains (losses) on available for sale securities:
Net unrealized gains on securities still held (net of $23, $23, $68 and $42 tax expense, respectively)	31	31	91	56
Reclassification from accumulated other comprehensive income (loss) to net income (net of $4, $2, $15 and $6 tax benefit, respectively)	(6)	(2)	(23)	(8)
Defined benefit pension and other benefits plans (net of less than $1 tax benefit, $4 tax expense and $4 tax benefit, respectively)	(1)	0	6	(7)
Net unrealized gains (losses) on foreign currency translation (net of less than $1, $1 and $1 tax expense and $2 tax benefit, respectively)	10	(9)	30	19
Other comprehensive income (loss) related to equity method investee (net of less than $1 tax expense, $0, less than $1 tax expense and $3 tax benefit, respectively)	1	3	1	(1)
Total other comprehensive income, net of tax	45	40	129	112
COMPREHENSIVE INCOME	901	829	3,381	2,100
LESS COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	9	30	40	22
COMPREHENSIVE INCOME ATTRIBUTABLE TO NEE	$ 892	$ 799	$ 3,341	$ 2,078

CONDENSED CONSOLIDATED STATEME4

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification of unrealized losses on cash flow hedges from accumulated other comprehensive income (loss) to net income (net of $4, $3, $9 and $26 tax expense, respectively)	$ 4	$ 3	$ 9	$ 26
Net unrealized gains on securities still held (net of $23, $23, $68 and $42 tax expense, respectively)	23	23	68	42
Reclassification from accumulated other comprehensive income (loss) to net income (net of $4, $2, $15 and $6 tax benefit, respectively)	(4)	(2)	(15)	(6)
Defined benefit pension and other benefits plans (net of less than $1 tax benefit, $4 tax expense and $4 tax benefit, respectively)	(1)	0	4	(4)
Net unrealized gains (losses) on foreign currency translation (net of less than $1, $1 and $1 tax expense and $2 tax benefit, respectively)	1	1	1	(2)
Other comprehensive income (loss) related to equity method investee (net of less than $1 tax expense, $0, less than $1 tax expense and $3 tax benefit, respectively)	$ 1	$ 0	$ 1	$ (3)

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
PROPERTY, PLANT AND EQUIPMENT
Electric plant in service and other property	$ 84,045	$ 80,150
Nuclear fuel	2,011	2,131
Construction work in progress	6,492	4,732
Accumulated depreciation and amortization	(21,460)	(20,101)
Total property, plant and equipment - net ($14,186 and $14,632 related to VIEs, respectively)	71,088	66,912
CURRENT ASSETS
Cash and cash equivalents	1,381	1,292
Customer receivables, net of allowances	2,147	1,784
Other receivables	603	655
Materials, supplies and fossil fuel inventory	1,352	1,289
Regulatory assets	551	524
Derivatives	442	885
Assets held for sale	0	452
Other	551	528
Total current assets	7,027	7,409
OTHER ASSETS
Special use funds	5,894	5,434
Other investments ($474 and $479 related to a VIE, respectively)	2,983	2,482
Prepaid benefit costs	1,217	1,177
Regulatory assets ($53 and $107 related to a VIE, respectively)	3,290	1,894
Derivatives	1,546	1,350
Other	3,736	3,335
Total other assets	18,666	15,672
TOTAL ASSETS	96,781	89,993
CAPITALIZATION
Common stock	5	5
Additional paid-in capital	9,046	8,948
Retained earnings	17,299	15,458
Accumulated other comprehensive income (loss)	48	(70)
Total common shareholders' equity	26,398	24,341
Noncontrolling interests	923	990
Total equity	27,321	25,331
Long-term debt	30,345	27,818
Total capitalization	57,666	53,149
CURRENT LIABILITIES
Commercial paper	2,074	268
Other short-term debt	255	150
Current maturities of long-term debt	2,285	2,604
Accounts payable	2,256	3,447
Customer deposits	449	470
Accrued interest and taxes	873	480
Derivatives	257	404
Accrued construction-related expenditures	921	1,120
Regulatory liabilities	157	299
Liabilities associated with assets held for sale	0	451
Other	2,077	1,226
Total current liabilities	11,604	10,919
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	2,882	2,736
Deferred income taxes	12,563	11,101
Regulatory liabilities	4,895	4,906
Derivatives	514	477
Deferral related to differential membership interests - VIEs	4,542	4,656
Other	2,115	2,049
Total other liabilities and deferred credits	27,511	25,925
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	96,781	89,993
FPL [Member]
ELECTRIC UTILITY PLANT AND OTHER PROPERTY
Plant in service and other property	46,394	44,966
Nuclear fuel	1,260	1,308
Construction work in progress	3,341	2,039
Accumulated depreciation and amortization	(12,730)	(12,304)
Total electric utility plant and other property - net	38,265	36,009
CURRENT ASSETS
Cash and cash equivalents	8	33
Customer receivables, net of allowances	1,212	768
Other receivables	225	148
Materials, supplies and fossil fuel inventory	903	851
Regulatory assets	551	524
Derivatives	7	209
Other	176	213
Total current assets	3,082	2,746
OTHER ASSETS
Special use funds	3,963	3,665
Prepaid benefit costs	1,332	1,301
Regulatory assets ($53 and $107 related to a VIE, respectively)	2,971	1,573
Other	302	207
Total other assets	8,568	6,746
TOTAL ASSETS	49,915	45,501
CAPITALIZATION
Common stock	1,373	1,373
Additional paid-in capital	8,291	8,332
Retained earnings	7,682	6,875
Total equity	17,346	16,580
Long-term debt	10,055	9,705
Total capitalization	27,401	26,285
CURRENT LIABILITIES
Commercial paper	1,079	268
Other short-term debt	250	150
Current maturities of long-term debt	463	367
Accounts payable	764	837
Customer deposits	446	466
Accrued interest and taxes	637	240
Accrued construction-related expenditures	218	262
Regulatory liabilities	145	294
Other	1,576	497
Total current liabilities	5,578	3,381
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	2,001	1,919
Deferred income taxes	9,554	8,541
Regulatory liabilities	4,855	4,893
Other	526	482
Total other liabilities and deferred credits	16,936	15,835
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	$ 49,915	$ 45,501

CONDENSED CONSOLIDATED BALANCE6

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
PROPERTY, PLANT AND EQUIPMENT
Total property, plant and equipment - net	$ 71,088	$ 66,912
CURRENT ASSETS
Customer receivables, allowances	9	5
OTHER ASSETS
Other investments	2,983	2,482
Regulatory assets ($53 and $107 related to a VIE, respectively)	$ 3,290	$ 1,894
CAPITALIZATION
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	800,000,000	800,000,000
Common Stock, Shares, Outstanding	470,000,000	468,000,000
Long-term debt	$ 30,345	$ 27,818
Related to VIEs [Member]
PROPERTY, PLANT AND EQUIPMENT
Total property, plant and equipment - net	14,186	14,632
OTHER ASSETS
Other investments	474	479
Regulatory assets ($53 and $107 related to a VIE, respectively)	53	107
CAPITALIZATION
Long-term debt	5,909	5,080
FPL [Member]
CURRENT ASSETS
Customer receivables, allowances	$ 5	$ 2
CAPITALIZATION
Common Stock, No Par Value (in dollars per share)	$ 0	$ 0
Common Stock, Shares Authorized	1,000	1,000
Common Stock, Shares, Outstanding	1,000	1,000
Common Stock, Shares, Issued	1,000	1,000
Long-term debt	$ 10,055	$ 9,705
FPL [Member] | Related to VIEs [Member]
OTHER ASSETS
Regulatory assets ($53 and $107 related to a VIE, respectively)	53	107
CAPITALIZATION
Long-term debt	$ 74	$ 144

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income		$ 3,252	$ 1,988
Net Income		3,223	1,946
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization		2,576	2,262
Nuclear fuel and other amortization		210	275
Unrealized losses on marked to market derivative contracts - net		45	369
Foreign currency transaction losses (gains)		(23)	99
Deferred income taxes		1,316	766
Cost recovery clauses and franchise fees		61	111
Acquisition of purchased power agreement		(258)	0
Benefits associated with differential membership interests - net		(311)	(220)
Gains on disposal of a business/assets - net		(1,170)	(291)
Recoverable storm-related costs		(334)	(17)
Other - net		106	(161)
Changes in operating assets and liabilities:
Current assets		(544)	(204)
Noncurrent assets		(77)	(17)
Current liabilities		299	362
Noncurrent liabilities		12	(28)
Net cash provided by operating activities		5,160	5,294
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures of FPL		(3,676)	(2,976)
Independent power and other investments of NEER		(4,678)	(4,610)
Nuclear fuel purchases		(175)	(194)
Other capital expenditures and other investments		(58)	(149)
Proceeds from sale of the fiber-optic telecommunications business		1,482	0
Sale of independent power and other investments of NEER		159	395
Proceeds from sale or maturity of securities in special use funds		2,059	2,635
Purchases of securities in special use funds		(2,146)	(2,711)
Proceeds from sales of noncontrolling interests in NEP		0	645
Other - net		198	(18)
Net cash used in investing activities		(6,835)	(6,983)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt		5,196	4,644
Retirements of long-term debt		(3,892)	(2,654)
Proceeds from differential membership investors		340	328
Net change in commercial paper		1,806	254
Proceeds from other short-term debt		200	500
Repayments of other short-term debt		(2)	(362)
Issuances of common stock - net		36	528
Dividends		(1,382)	(1,205)
Other - net		(538)	(234)
Net cash provided by (used in) financing activities		1,764	1,799
Net increase (decrease) in cash and cash equivalents		89	110
Cash and cash equivalents at beginning of period		1,292	571
Cash and cash equivalents at end of period		1,381	681
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued property additions		2,036	2,655
Decrease (increase) in property, plant and equipment - net as a result of cash grants primarily under the Recovery Act		(145)	403
Increase in property, plant and equipment - net as a result of a settlement/noncash exchange		(92)	(70)
Proceeds from differential membership investors used to reduce debt		0	100
FPL [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	[1]	1,537	1,356
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization		1,514	1,207
Nuclear fuel and other amortization		153	167
Deferred income taxes		987	569
Cost recovery clauses and franchise fees		61	111
Acquisition of purchased power agreement		(258)	0
Recoverable storm-related costs		(334)	(17)
Other - net		(63)	(15)
Changes in operating assets and liabilities:
Current assets		(578)	(185)
Noncurrent assets		(45)	12
Current liabilities		507	679
Noncurrent liabilities		(13)	(94)
Net cash provided by operating activities		3,468	3,790
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures of FPL		(3,676)	(2,976)
Nuclear fuel purchases		(104)	(121)
Proceeds from sale or maturity of securities in special use funds		1,241	1,775
Purchases of securities in special use funds		(1,320)	(1,836)
Other - net		29	32
Net cash used in investing activities		(3,830)	(3,126)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt		200	150
Retirements of long-term debt		(73)	(262)
Net change in commercial paper		811	408
Proceeds from other short-term debt		200	500
Repayments of other short-term debt		(2)	(150)
Dividends		(800)	(1,300)
Other - net		1	13
Net cash provided by (used in) financing activities		337	(641)
Net increase (decrease) in cash and cash equivalents		(25)	23
Cash and cash equivalents at beginning of period		33	23
Cash and cash equivalents at end of period		8	46
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued property additions		400	475
Increase in property, plant and equipment - net as a result of a settlement/noncash exchange		$ (96)	$ 0
[1]	FPL's comprehensive income is the same as reported net income.

CONDENSED CONSOLIDATED STATEME8

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total Common Shareholders' Equity Parent [Member]	Noncontrolling Interest [Member]
Beginning Balance (in shares) at Dec. 31, 2015		461
Beginning Balance at Dec. 31, 2015	$ 23,112	$ 5	$ 8,596	$ (167)	$ 14,140	$ 22,574	$ 538
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,988				1,946	1,946	42
Issuances of common stock, net of issuance cost of less than $1 (in shares)		5
Issuances of common stock, net of issuance cost of less than $1		$ 0	523			523
Share-based payment activity (in shares)		1
Share-based payment activity			96			96
Dividends on common stock					(1,205)	(1,205)
Premium on equity units			(200)			(200)
Other comprehensive income (loss)	112			131		131	(19)
Sale of NEER assets to NEP			49			49	440
Distributions to noncontrolling interests							(37)
Other			(25)		18	(7)	(2)
Ending Balance (in shares) at Sep. 30, 2016		467
Ending Balance at Sep. 30, 2016	$ 24,869	$ 5	9,039	(36)	14,899	23,907	962
Beginning Balance (in shares) at Dec. 31, 2016	468	468
Beginning Balance at Dec. 31, 2016	$ 25,331	$ 5	8,948	(70)	15,458	24,341	990
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	3,252				3,223	3,223	29
Issuances of common stock, net of issuance cost of less than $1 (in shares)		2
Issuances of common stock, net of issuance cost of less than $1			24			24
Share-based payment activity (in shares)		0
Share-based payment activity			77			77
Dividends on common stock					(1,382)	(1,382)
Other comprehensive income (loss)	$ 129			118		118	11
Sale of NEER assets to NEP			0			0	(17)
Distributions to noncontrolling interests							(64)
Other			(3)			(3)	(26)
Ending Balance (in shares) at Sep. 30, 2017	470	470
Ending Balance at Sep. 30, 2017	$ 27,321	$ 5	$ 9,046	$ 48	$ 17,299	$ 26,398	$ 923

Employee Retirement Benefits

Employee Retirement Benefits	9 Months Ended
	Sep. 30, 2017
Retirement Benefits [Abstract]
Employee Retirement Benefits	Employee Retirement Benefits NEE sponsors a qualified noncontributory defined benefit pension plan for substantially all employees of NEE and its subsidiaries and sponsors a contributory postretirement plan for other benefits for retirees of NEE and its subsidiaries meeting certain eligibility requirements. The components of net periodic (income) cost for the plans are as follows: Pension Benefits Postretirement Benefits Pension Benefits Postretirement Benefits Three Months Ended Three Months Ended Nine Months Ended Nine Months Ended 2017 2016 2017 2016 2017 2016 2017 2016 (millions) Service cost $ 16 $ 16 $ — $ — $ 49 $ 47 $ 1 $ 1 Interest cost 21 26 2 3 63 78 6 10 Expected return on plan assets (67 ) (65 ) — — (202 ) (195 ) — — Amortization of prior service cost (benefit) — — (4 ) — (1 ) 1 (6 ) (2 ) Special termination benefits — — — — 38 — — — Postretirement benefits settlement — — — — — — 1 — Net periodic (income) cost at NEE $ (30 ) $ (23 ) $ (2 ) $ 3 $ (53 ) $ (69 ) $ 2 $ 9 Net periodic (income) cost at FPL $ (20 ) $ (15 ) $ (2 ) $ 2 $ (32 ) $ (44 ) $ 1 $ 7 Amendments to Presentation of Retirement Benefits - In March 2017, the FASB issued an accounting standards update that requires certain changes in classification of components of net periodic pension and postretirement benefit costs within the income statement and allows only the service cost component to be eligible for capitalization. This standards update will be applied using the retrospective approach for presentation of the components of net periodic pension and postretirement benefit costs and the prospective approach for capitalization of service cost. NEE and FPL will apply this standards update on January 1, 2018, and are currently evaluating the impact the adoption will have on their consolidated financial statements.

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments NEE and FPL use derivative instruments (primarily swaps, options, futures and forwards) to manage the physical and financial risks inherent in the purchase and sale of fuel and electricity, as well as interest rate and foreign currency exchange rate risk associated primarily with outstanding and expected future debt issuances and borrowings, and to optimize the value of NEER's power generation and gas infrastructure assets. NEE and FPL do not utilize hedge accounting for their cash flow and fair value hedges. With respect to commodities related to NEE's competitive energy business, NEER employs risk management procedures to conduct its activities related to optimizing the value of its power generation and gas infrastructure assets, providing full energy and capacity requirements services primarily to distribution utilities, and engaging in power and gas marketing and trading activities to take advantage of expected future favorable price movements and changes in the expected volatility of prices in the energy markets. These risk management activities involve the use of derivative instruments executed within prescribed limits to manage the risk associated with fluctuating commodity prices. Transactions in derivative instruments are executed on recognized exchanges or via the OTC markets, depending on the most favorable credit terms and market execution factors. For NEER's power generation and gas infrastructure assets, derivative instruments are used to hedge all or a portion of the expected output of these assets. These hedges are designed to reduce the effect of adverse changes in the wholesale forward commodity markets associated with NEER's power generation and gas infrastructure assets. With regard to full energy and capacity requirements services, NEER is required to vary the quantity of energy and related services based on the load demands of the customers served. For this type of transaction, derivative instruments are used to hedge the anticipated electricity quantities required to serve these customers and reduce the effect of unfavorable changes in the forward energy markets. Additionally, NEER takes positions in energy markets based on differences between actual forward market levels and management's view of fundamental market conditions, including supply/demand imbalances, changes in traditional flows of energy, changes in short- and long-term weather patterns and anticipated regulatory and legislative outcomes. NEER uses derivative instruments to realize value from these market dislocations, subject to strict risk management limits around market, operational and credit exposure. Derivative instruments, when required to be marked to market, are recorded on NEE's and FPL's condensed consolidated balance sheets as either an asset or liability measured at fair value. At FPL, substantially all changes in the derivatives' fair value are deferred as a regulatory asset or liability until the contracts are settled, and, upon settlement, any gains or losses are passed through the fuel clause. For NEE's non-rate regulated operations, predominantly NEER, essentially all changes in the derivatives' fair value for power purchases and sales, fuel sales and trading activities are recognized on a net basis in operating revenues; fuel purchases used in the production of electricity are recognized in fuel, purchased power and interchange expense; and the equity method investees' related activity is recognized in equity in earnings of equity method investees in NEE's condensed consolidated statements of income. Settlement gains and losses are included within the line items in the condensed consolidated statements of income to which they relate. Transactions for which physical delivery is deemed not to have occurred are presented on a net basis in the condensed consolidated statements of income. For commodity derivatives, NEE believes that, where offsetting positions exist at the same location for the same time, the transactions are considered to have been netted and therefore physical delivery has been deemed not to have occurred for financial reporting purposes. Settlements related to derivative instruments are primarily recognized in net cash provided by operating activities in NEE's and FPL's condensed consolidated statements of cash flows. For interest rate and foreign currency derivative instruments, all changes in the derivatives' fair value, as well as the transaction gain or loss on foreign denominated debt, are recognized in interest expense in NEE's condensed consolidated statements of income. In addition, for the nine months ended September 30, 2017 and 2016 , NEE reclassified approximately $2 million ( $1 million after-tax) and $17 million ( $10 million after tax), respectively, from AOCI to interest expense primarily because it became probable that related future transactions being hedged would not occur. At September 30, 2017 , NEE's AOCI included amounts related to discontinued interest rate cash flow hedges with expiration dates through March 2035 and foreign currency cash flow hedges with expiration dates through September 2030. Approximately $27 million of net losses included in AOCI at September 30, 2017 is expected to be reclassified into earnings within the next 12 months as the principal and/or interest payments are made. Such amounts assume no change in scheduled principal payments. Fair Value of Derivative Instruments - The tables below present NEE's and FPL's gross derivative positions at September 30, 2017 and December 31, 2016 , as required by disclosure rules. However, the majority of the underlying contracts are subject to master netting agreements and generally would not be contractually settled on a gross basis. Therefore, the tables below also present the derivative positions on a net basis, which reflect the offsetting of positions of certain transactions within the portfolio, the contractual ability to settle contracts under master netting arrangements and the netting of margin cash collateral (see Note 3 - Recurring Fair Value Measurements for netting information), as well as the location of the net derivative position on the condensed consolidated balance sheets. September 30, 2017 Gross Basis Net Basis Assets Liabilities Assets Liabilities (millions) NEE: Commodity contracts $ 4,081 $ 2,546 $ 1,885 $ 403 Interest rate contracts 76 299 92 315 Foreign currency contracts — 42 11 53 Total fair values $ 4,157 $ 2,887 $ 1,988 $ 771 FPL: Commodity contracts $ 11 $ 7 $ 7 $ 3 Net fair value by NEE balance sheet line item: Current derivative assets (a) $ 442 Noncurrent derivative assets (b) 1,546 Current derivative liabilities $ 257 Noncurrent derivative liabilities (c) 514 Total derivatives $ 1,988 $ 771 Net fair value by FPL balance sheet line item: Current derivative assets $ 7 Current other liabilities $ 3 Total derivatives $ 7 $ 3 ——————————————— (a) Reflects the netting of approximately $74 million in margin cash collateral received from counterparties. (b) Reflects the netting of approximately $12 million in margin cash collateral received from counterparties. (c) Reflects the netting of approximately $33 million in margin cash collateral paid to counterparties. December 31, 2016 Gross Basis Net Basis Assets Liabilities Assets Liabilities (millions) NEE: Commodity contracts $ 4,590 $ 2,968 $ 1,938 $ 483 Interest rate contracts 288 284 296 292 Foreign currency contracts 1 106 1 106 Total fair values $ 4,879 $ 3,358 $ 2,235 $ 881 FPL: Commodity contracts $ 212 $ 4 $ 209 $ 1 Net fair value by NEE balance sheet line item: Current derivative assets (a) $ 885 Noncurrent derivative assets (b) 1,350 Current derivative liabilities $ 404 Noncurrent derivative liabilities 477 Total derivatives $ 2,235 $ 881 Net fair value by FPL balance sheet line item: Current derivative assets $ 209 Current other liabilities $ 1 Total derivatives $ 209 $ 1 ——————————————— (a) Reflects the netting of approximately $96 million in margin cash collateral received from counterparties. (b) Reflects the netting of approximately $71 million in margin cash collateral received from counterparties. At September 30, 2017 and December 31, 2016 , NEE had approximately $13 million and $5 million ( none at FPL), respectively, in margin cash collateral received from counterparties that was not offset against derivative assets in the above presentation. These amounts are included in current other liabilities on NEE's condensed consolidated balance sheets. Additionally, at September 30, 2017 and December 31, 2016 , NEE had approximately $177 million and $129 million ( none at FPL), respectively, in margin cash collateral paid to counterparties that was not offset against derivative assets or liabilities in the above presentation. These amounts are included in current other assets on NEE's condensed consolidated balance sheets. Income Statement Impact of Derivative Instruments - Gains (losses) related to NEE's derivatives are recorded in NEE's condensed consolidated statements of income as follows: Three Months Ended Nine Months Ended 2017 2016 2017 2016 (millions) Commodity contracts: (a) Operating revenues $ 114 $ 264 $ 538 $ 502 Fuel, purchased power and interchange — 1 — (1 ) Foreign currency contracts - interest expense (4 ) 15 53 96 Foreign currency contracts - other - net (2 ) 1 (5 ) (2 ) Interest rate contracts - interest expense (41 ) (58 ) (232 ) (515 ) Losses reclassified from AOCI to interest expense: Interest rate contracts (13 ) (18 ) (36 ) (71 ) Foreign currency contracts (1 ) (3 ) (80 ) (9 ) Total $ 53 $ 202 $ 238 $ — ——————————————— (a) For the three and nine months ended September 30, 2017 , FPL recorded losses of approximately $12 million and $164 million , respectively, related to commodity contracts as regulatory assets on its condensed consolidated balance sheets. For the three and nine months ended September 30, 2016 , FPL recorded approximately $35 million of losses and $35 million of gains, respectively, related to commodity contracts as regulatory assets and regulatory liabilities on its condensed consolidated balance sheets. Notional Volumes of Derivative Instruments - The following table represents net notional volumes associated with derivative instruments that are required to be reported at fair value in NEE's and FPL's condensed consolidated financial statements. The table includes significant volumes of transactions that have minimal exposure to commodity price changes because they are variably priced agreements. These volumes are only an indication of the commodity exposure that is managed through the use of derivatives. They do not represent net physical asset positions or non-derivative positions and their hedges, nor do they represent NEE’s and FPL’s net economic exposure, but only the net notional derivative positions that fully or partially hedge the related asset positions. NEE and FPL had derivative commodity contracts for the following net notional volumes: September 30, 2017 December 31, 2016 Commodity Type NEE FPL NEE FPL (millions) Power (107 ) MWh — (84 ) MWh — Natural gas 312 MMBtu 255 MMBtu 1,002 MMBtu 618 MMBtu Oil (3 ) barrels — (7 ) barrels — At September 30, 2017 and December 31, 2016 , NEE had interest rate contracts with notional amounts totaling approximately $13.6 billion and $15.1 billion , respectively, and foreign currency contracts with notional amounts totaling approximately $714 million and $705 million , respectively. Credit - Risk - Related Contingent Features - Certain derivative instruments contain credit-risk-related contingent features including, among other things, the requirement to maintain an investment grade credit rating from specified credit rating agencies and certain financial ratios, as well as credit-related cross-default and material adverse change triggers. At September 30, 2017 and December 31, 2016 , the aggregate fair value of NEE's derivative instruments with credit-risk-related contingent features that were in a liability position was approximately $1.1 billion ( $7 million for FPL) and $1.3 billion ( $5 million for FPL), respectively. If the credit-risk-related contingent features underlying these derivative agreements were triggered, certain subsidiaries of NEE, including FPL, could be required to post collateral or settle contracts according to contractual terms which generally allow netting of contracts in offsetting positions. Certain derivative contracts contain multiple types of credit-related triggers. To the extent these contracts contain a credit ratings downgrade trigger, the maximum exposure is included in the following credit ratings collateral posting requirements. If FPL's and NEECH's credit ratings were downgraded to BBB/Baa2 (a two level downgrade for FPL and a one level downgrade for NEECH from the current lowest applicable rating), applicable NEE subsidiaries would be required to post collateral such that the total posted collateral would be approximately $130 million ( none at FPL ) as of September 30, 2017 and $110 million ( none at FPL) as of December 31, 2016 . If FPL's and NEECH's credit ratings were downgraded to below investment grade, applicable NEE subsidiaries would be required to post additional collateral such that the total posted collateral would be approximately $1.1 billion ( $40 million at FPL) as of September 30, 2017 and $990 million ( $10 million at FPL) as of December 31, 2016 . Some derivative contracts do not contain credit ratings downgrade triggers, but do contain provisions that require certain financial measures be maintained and/or have credit-related cross-default triggers. In the event these provisions were triggered, applicable NEE subsidiaries could be required to post additional collateral of up to approximately $220 million ( $140 million at FPL) as of September 30, 2017 and $225 million ( $115 million at FPL) as of December 31, 2016 . Collateral related to derivatives may be posted in the form of cash or credit support in the normal course of business. At September 30, 2017 and December 31, 2016 , applicable NEE subsidiaries have posted approximately $2 million ( none at FPL) and $1 million ( none at FPL), respectively, in cash and $26 million ( none at FPL) and $30 million ( none at FPL), respectively, in the form of letters of credit each of which could be applied toward the collateral requirements described above. FPL and NEECH have credit facilities generally in excess of the collateral requirements described above that would be available to support, among other things, derivative activities. Under the terms of the credit facilities, maintenance of a specific credit rating is not a condition to drawing on these credit facilities, although there are other conditions to drawing on these credit facilities. Additionally, some contracts contain certain adequate assurance provisions where a counterparty may demand additional collateral based on subjective events and/or conditions. Due to the subjective nature of these provisions, NEE and FPL are unable to determine an exact value for these items and they are not included in any of the quantitative disclosures above.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The fair value of assets and liabilities are determined using either unadjusted quoted prices in active markets (Level 1) or pricing inputs that are observable (Level 2) whenever that information is available and using unobservable inputs (Level 3) to estimate fair value only when relevant observable inputs are not available. NEE and FPL use several different valuation techniques to measure the fair value of assets and liabilities, relying primarily on the market approach of using prices and other market information for identical and/or comparable assets and liabilities for those assets and liabilities that are measured at fair value on a recurring basis. NEE's and FPL's assessment of the significance of any particular input to the fair value measurement requires judgment and may affect placement within the fair value hierarchy levels. Non-performance risk, including the consideration of a credit valuation adjustment, is also considered in the determination of fair value for all assets and liabilities measured at fair value. Cash Equivalents and Restricted Cash - NEE and FPL hold investments in money market funds. The fair value of these funds is estimated using a market approach based on current observable market prices. Special Use Funds and Other Investments - NEE and FPL hold primarily debt and equity securities directly, as well as indirectly through commingled funds. Substantially all directly held equity securities are valued at their quoted market prices. For directly held debt securities, multiple prices and price types are obtained from pricing vendors whenever possible, which enables cross-provider validations. A primary price source is identified based on asset type, class or issue of each security. Commingled funds, which are similar to mutual funds, are maintained by banks or investment companies and hold certain investments in accordance with a stated set of objectives. The fair value of commingled funds is primarily derived from the quoted prices in active markets of the underlying securities. Because the fund shares are offered to a limited group of investors, they are not considered to be traded in an active market. Derivative Instruments - NEE and FPL measure the fair value of commodity contracts using a combination of market and income approaches utilizing prices observed on commodities exchanges and in the OTC markets, or through the use of industry-standard valuation techniques, such as option modeling or discounted cash flows techniques, incorporating both observable and unobservable valuation inputs. The resulting measurements are the best estimate of fair value as represented by the transfer of the asset or liability through an orderly transaction in the marketplace at the measurement date. Most exchange-traded derivative assets and liabilities are valued directly using unadjusted quoted prices. For exchange-traded derivative assets and liabilities where the principal market is deemed to be inactive based on average daily volumes and open interest, the measurement is established using settlement prices from the exchanges, and therefore considered to be valued using other observable inputs. NEE, through its subsidiaries, including FPL, also enters into OTC commodity contract derivatives. The majority of these contracts are transacted at liquid trading points, and the prices for these contracts are verified using quoted prices in active markets from exchanges, brokers or pricing services for similar contracts. NEE, through NEER, also enters into full requirements contracts, which, in most cases, meet the definition of derivatives and are measured at fair value. These contracts typically have one or more inputs that are not observable and are significant to the valuation of the contract. In addition, certain exchange and non-exchange traded derivative options at NEE have one or more significant inputs that are not observable, and are valued using industry-standard option models. In all cases where NEE and FPL use significant unobservable inputs for the valuation of a commodity contract, consideration is given to the assumptions that market participants would use in valuing the asset or liability. The primary input to the valuation models for commodity contracts is the forward commodity curve for the respective instruments. Other inputs include, but are not limited to, assumptions about market liquidity, volatility, correlation and contract duration as more fully described below in Significant Unobservable Inputs Used in Recurring Fair Value Measurements. In instances where the reference markets are deemed to be inactive or do not have transactions for a similar contract, the derivative assets and liabilities may be valued using significant other observable inputs and potentially significant unobservable inputs. In such instances, the valuation for these contracts is established using techniques including extrapolation from or interpolation between actively traded contracts, or estimated basis adjustments from liquid trading points. NEE and FPL regularly evaluate and validate the inputs used to determine fair value by a number of methods, consisting of various market price verification procedures, including the use of pricing services and multiple broker quotes to support the market price of the various commodities. In all cases where there are assumptions and models used to generate inputs for valuing derivative assets and liabilities, the review and verification of the assumptions, models and changes to the models are undertaken by individuals that are independent of those responsible for estimating fair value. NEE uses interest rate contracts and foreign currency contracts to mitigate and adjust interest rate and foreign currency exchange exposure related primarily to certain outstanding and expected future debt issuances and borrowings when deemed appropriate based on market conditions or when required by financing agreements. NEE estimates the fair value of these derivatives using an income approach based on a discounted cash flows valuation technique utilizing the net amount of estimated future cash inflows and outflows related to the agreements. Recurring Fair Value Measurements - NEE's and FPL's financial assets and liabilities and other fair value measurements made on a recurring basis by fair value hierarchy level are as follows: September 30, 2017 Level 1 Level 2 Level 3 Netting (a) Total (millions) Assets: Cash equivalents and restricted cash: (b) NEE - equity securities $ 999 $ — $ — $ 999 FPL - equity securities $ 112 $ — $ — $ 112 Special use funds: (c) NEE: Equity securities $ 1,590 $ 1,695 (d) $ — $ 3,285 U.S. Government and municipal bonds $ 404 $ 138 $ — $ 542 Corporate debt securities $ 1 $ 772 $ — $ 773 Mortgage-backed securities $ — $ 452 $ — $ 452 Other debt securities $ — $ 126 $ — $ 126 FPL: Equity securities $ 442 $ 1,545 (d) $ — $ 1,987 U.S. Government and municipal bonds $ 301 $ 115 $ — $ 416 Corporate debt securities $ — $ 542 $ — $ 542 Mortgage-backed securities $ — $ 343 $ — $ 343 Other debt securities $ — $ 114 $ — $ 114 Other investments: NEE: Equity securities $ 25 $ 10 $ — $ 35 Debt securities $ 32 $ 109 $ — $ 141 Derivatives: NEE: Commodity contracts $ 1,168 $ 1,503 $ 1,410 $ (2,196 ) $ 1,885 (e) Interest rate contracts $ — $ 76 $ — $ 16 $ 92 (e) Foreign currency contracts $ — $ — $ — $ 11 $ 11 (e) FPL - commodity contracts $ — $ 10 $ 1 $ (4 ) $ 7 (e) Liabilities: Derivatives: NEE: Commodity contracts $ 1,144 $ 900 $ 502 $ (2,143 ) $ 403 (e) Interest rate contracts $ — $ 171 $ 128 $ 16 $ 315 (e) Foreign currency contracts $ — $ 42 $ — $ 11 $ 53 (e) FPL - commodity contracts $ — $ 5 $ 2 $ (4 ) $ 3 (e) ——————————————— (a) Includes the effect of the contractual ability to settle contracts under master netting arrangements and the netting of margin cash collateral payments and receipts. NEE and FPL also have contract settlement receivable and payable balances that are subject to the master netting arrangements but are not offset within the condensed consolidated balance sheets and are recorded in customer receivables - net and accounts payable, respectively. (b) Includes restricted cash of approximately $137 million ( $99 million for FPL) in other current assets on the condensed consolidated balance sheets. (c) Excludes investments accounted for under the equity method and loans not measured at fair value on a recurring basis. See Fair Value of Financial Instruments Recorded at Other than Fair Value below. (d) Primarily invested in commingled funds whose underlying securities would be Level 1 if those securities were held directly by NEE or FPL. (e) See Note 2 - Fair Value of Derivative Instruments for a reconciliation of net derivatives to NEE's and FPL's condensed consolidated balance sheets. December 31, 2016 Level 1 Level 2 Level 3 Netting (a) Total (millions) Assets: Cash equivalents and restricted cash: (b) NEE - equity securities $ 982 $ — $ — $ 982 FPL - equity securities $ 120 $ — $ — $ 120 Special use funds: (c) NEE: Equity securities $ 1,410 $ 1,503 (d) $ — $ 2,913 U.S. Government and municipal bonds $ 296 $ 170 $ — $ 466 Corporate debt securities $ 1 $ 763 $ — $ 764 Mortgage-backed securities $ — $ 498 $ — $ 498 Other debt securities $ — $ 81 $ — $ 81 FPL: Equity securities $ 373 $ 1,372 (d) $ — $ 1,745 U.S. Government and municipal bonds $ 221 $ 141 $ — $ 362 Corporate debt securities $ — $ 547 $ — $ 547 Mortgage-backed securities $ — $ 384 $ — $ 384 Other debt securities $ — $ 70 $ — $ 70 Other investments: NEE: Equity securities $ 26 $ 9 $ — $ 35 Debt securities $ 8 $ 153 $ — $ 161 Derivatives: NEE: Commodity contracts $ 1,563 $ 1,827 $ 1,200 $ (2,652 ) $ 1,938 (e) Interest rate contracts $ — $ 285 $ 3 $ 8 $ 296 (e) Foreign currency contracts $ — $ 1 $ — $ — $ 1 (e) FPL - commodity contracts $ — $ 208 $ 4 $ (3 ) $ 209 (e) Liabilities: Derivatives: NEE: Commodity contracts $ 1,476 $ 980 $ 512 $ (2,485 ) $ 483 (e) Interest rate contracts $ — $ 171 $ 113 $ 8 $ 292 (e) Foreign currency contracts $ — $ 106 $ — $ — $ 106 (e) FPL - commodity contracts $ — $ 1 $ 3 $ (3 ) $ 1 (e) ——————————————— (a) Includes the effect of the contractual ability to settle contracts under master netting arrangements and the netting of margin cash collateral payments and receipts. NEE and FPL also have contract settlement receivable and payable balances that are subject to the master netting arrangements but are not offset within the condensed consolidated balance sheets and are recorded in customer receivables - net and accounts payable, respectively. (b) Includes restricted cash of approximately $164 million ( $120 million for FPL) in other current assets on the condensed consolidated balance sheets. (c) Excludes investments accounted for under the equity method and loans not measured at fair value on a recurring basis. See Fair Value of Financial Instruments Recorded at Other than Fair Value below. (d) Primarily invested in commingled funds whose underlying securities would be Level 1 if those securities were held directly by NEE or FPL. (e) See Note 2 - Fair Value of Derivative Instruments for a reconciliation of net derivatives to NEE's and FPL's condensed consolidated balance sheets. Significant Unobservable Inputs Used in Recurring Fair Value Measurements - The valuation of certain commodity contracts requires the use of significant unobservable inputs. All forward price, implied volatility, implied correlation and interest rate inputs used in the valuation of such contracts are directly based on third-party market data, such as broker quotes and exchange settlements, when that data is available. If third-party market data is not available, then industry standard methodologies are used to develop inputs that maximize the use of relevant observable inputs and minimize the use of unobservable inputs. Observable inputs, including some forward prices, implied volatilities and interest rates used for determining fair value are updated daily to reflect the best available market information. Unobservable inputs which are related to observable inputs, such as illiquid portions of forward price or volatility curves, are updated daily as well, using industry standard techniques such as interpolation and extrapolation, combining observable forward inputs supplemented by historical market and other relevant data. Other unobservable inputs, such as implied correlations, customer migration rates from full requirements contracts and some implied volatility curves, are modeled using proprietary models based on historical data and industry standard techniques. All price, volatility, correlation and customer migration inputs used in valuation are subject to validation by the Trading Risk Management group. The Trading Risk Management group performs a risk management function responsible for assessing credit, market and operational risk impact, reviewing valuation methodology and modeling, confirming transactions, monitoring approval processes and developing and monitoring trading limits. The Trading Risk Management group is separate from the transacting group. For markets where independent third-party data is readily available, validation is conducted daily by directly reviewing this market data against inputs utilized by the transacting group, and indirectly by reviewing daily risk reports. For markets where independent third-party data is not readily available, additional analytical reviews are performed on at least a quarterly basis. These analytical reviews are designed to ensure that all price and volatility curves used for fair valuing transactions are adequately validated each quarter, and are reviewed and approved by the Trading Risk Management group. In addition, other valuation assumptions such as implied correlations and customer migration rates are reviewed and approved by the Trading Risk Management group on a periodic basis. Newly created models used in the valuation process are also subject to testing and approval by the Trading Risk Management group prior to use and established models are reviewed annually, or more often as needed, by the Trading Risk Management group. On a monthly basis, the Exposure Management Committee (EMC), which is comprised of certain members of senior management, meets with representatives from the Trading Risk Management group and the transacting group to discuss NEE's and FPL's energy risk profile and operations, to review risk reports and to discuss fair value issues as necessary. The EMC develops guidelines required for an appropriate risk management control infrastructure, which includes implementation and monitoring of compliance with Trading Risk Management policy. The EMC executes its risk management responsibilities through direct oversight and delegation of its responsibilities to the Trading Risk Management group, as well as to other corporate and business unit personnel. The significant unobservable inputs used in the valuation of NEE's commodity contracts categorized as Level 3 of the fair value hierarchy at September 30, 2017 are as follows: Fair Value at Valuation Significant Transaction Type September 30, 2017 Technique(s) Unobservable Inputs Range Assets Liabilities (millions) Forward contracts - power $ 860 $ 263 Discounted cash flow Forward price (per MWh) $— — $87 Forward contracts - gas 28 14 Discounted cash flow Forward price (per MMBtu) $1 — $6 Options - power 48 19 Option models Implied correlations 1% — 100% Implied volatilities 8% — 227% Options - primarily gas 149 195 Option models Implied correlations 1% — 100% Implied volatilities 1% — 104% Full requirements and unit contingent contracts 325 11 Discounted cash flow Forward price (per MWh) $(19) — $206 Customer migration rate (a) —% — 20% Total $ 1,410 $ 502 ——————————————— (a) Applies only to full requirements contracts. The sensitivity of NEE's fair value measurements to increases (decreases) in the significant unobservable inputs is as follows: Significant Unobservable Input Position Impact on Fair Value Measurement Forward price Purchase power/gas Increase (decrease) Sell power/gas Decrease (increase) Implied correlations Purchase option Decrease (increase) Sell option Increase (decrease) Implied volatilities Purchase option Increase (decrease) Sell option Decrease (increase) Customer migration rate Sell power (a) Decrease (increase) ——————————————— (a) Assumes the contract is in a gain position. In addition, the fair value measurement of interest rate contract net liabilities related to the solar projects in Spain of approximately $128 million at September 30, 2017 includes a significant credit valuation adjustment. The credit valuation adjustment, considered an unobservable input, reflects management's assessment of non-performance risk of the subsidiaries related to the solar projects in Spain that are party to the contracts. The reconciliation of changes in the fair value of derivatives that are based on significant unobservable inputs is as follows: Three Months Ended September 30, 2017 2016 NEE FPL NEE FPL (millions) Fair value of net derivatives based on significant unobservable inputs at June 30 $ 724 $ (2 ) $ 532 $ (1 ) Realized and unrealized gains (losses): Included in earnings (a) 158 — 153 — Included in other comprehensive income (loss) (b) (5 ) — — — Purchases 38 — 28 — Settlements (77 ) 1 (72 ) 1 Issuances (59 ) — (16 ) — Transfers in (c) — — 1 — Transfers out (c) 1 — 36 — Fair value of net derivatives based on significant unobservable inputs at September 30 $ 780 $ (1 ) $ 662 $ — The amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to derivatives still held at the reporting date (d) $ 213 $ — $ 150 $ — ——————————————— (a) For the three months ended September 30, 2017 and 2016 , realized and unrealized gains of approximately $164 million and $198 million , respectively, are reflected in the condensed consolidated statements of income in operating revenues and the balance is primarily reflected in interest expense. (b) Reflected in net unrealized gains on foreign currency translation on the condensed consolidated statements of comprehensive income. (c) Transfers into Level 3 were a result of decreased observability of market data and transfers from Level 3 to Level 2 were a result of increased observability of market data. NEE's and FPL's policy is to recognize all transfers at the beginning of the reporting period. (d) For the three months ended September 30, 2017 and 2016 , unrealized gains of approximately $219 million and $194 million , respectively, are reflected in the condensed consolidated statements of income in operating revenues and the balance is reflected in interest expense. Nine Months Ended September 30, 2017 2016 NEE FPL NEE FPL (millions) Fair value of net derivatives based on significant unobservable inputs at December 31 of prior period $ 578 $ 1 $ 538 $ — Realized and unrealized gains (losses): Included in earnings (a) 518 — 373 — Included in other comprehensive income (b) (16 ) — (3 ) — Included in regulatory assets and liabilities (2 ) (2 ) — — Purchases 83 — 203 — Settlements (234 ) — (300 ) — Issuances (162 ) — (159 ) — Transfers in (c) 14 — 4 — Transfers out (c) 1 — 6 — Fair value of net derivatives based on significant unobservable inputs at September 30 $ 780 $ (1 ) $ 662 $ — The amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to derivatives still held at the reporting date (d) $ 461 $ — $ 231 $ — ——————————————— (a) For the nine months ended September 30, 2017 and 2016 , realized and unrealized gains of approximately $519 million and $443 million , respectively, are reflected in the condensed consolidated statements of income in operating revenues and the balance is primarily reflected in interest expense. (b) Reflected in net unrealized gains on foreign currency translation on the condensed consolidated statements of comprehensive income. (c) Transfers into Level 3 were a result of decreased observability of market data and transfers from Level 3 to Level 2 were a result of increased observability of market data. NEE's and FPL's policy is to recognize all transfers at the beginning of the reporting period. (d) For the nine months ended September 30, 2017 and 2016 , unrealized gains of approximately $462 million and $302 million , respectively, are reflected in the condensed consolidated statements of income in operating revenues and the balance is reflected in interest expense. Contingent Consideration - NEE recorded a liability related to a contingent holdback as part of the 2015 acquisition of a portfolio of seven long-term contracted natural gas pipeline assets located in Texas (Texas pipelines). The contingent holdback was payable if the Texas pipelines entered into one or more written contracts by December 31, 2016 related to certain financial performance and capital expenditure thresholds. The significant inputs and assumptions used in the fair value measurement included the estimated probability of executing contracts related to financial performance and capital expenditure thresholds as well as the appropriate discount rate. During the three and nine months ended September 30, 2016 , NEE recorded approximately $101 million and $118 million , respectively, in fair value adjustments to decrease the contingent consideration based on updated estimates associated with management's probability assessment as of September 30, 2016. The fair value adjustments are included in revaluation of contingent consideration in NEE's condensed consolidated statements of income. Fair Value of Financial Instruments Recorded at Other than Fair Value - The carrying amounts of commercial paper and other short-term debt approximate their fair values. The carrying amounts and estimated fair values of other financial instruments recorded at other than fair value are as follows: September 30, 2017 December 31, 2016 Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (millions) NEE: Special use funds (a) $ 716 $ 716 $ 712 $ 712 Other investments - primarily notes receivable (b) $ 512 $ 695 $ 526 $ 668 Long-term debt, including current maturities $ 32,625 $ 34,846 (c) $ 30,418 (d) $ 31,623 (c)(d) FPL: Special use funds (a) $ 561 $ 561 $ 557 $ 557 Long-term debt, including current maturities $ 10,518 $ 11,941 (c) $ 10,072 $ 11,211 (c) ——————————————— (a) Primarily represents investments accounted for under the equity method and loans not measured at fair value on a recurring basis. (b) Primarily a note receivable which bears interest at a fixed rate and matures in 2029. At September 30, 2017, the note receivable is classified as held for sale and is under contract, along with debt secured by this note receivable (see Note 6 - NEER). Fair values are estimated using an income approach utilizing a discounted cash flow valuation technique based on certain observable yield curves and indices considering the credit profile of the borrower (Level 3). (c) As of September 30, 2017 and December 31, 2016 , for NEE, approximately $33,106 million and $29,804 million , respectively, is estimated using a market approach based on quoted market prices for the same or similar issues (Level 2); the balance is estimated using an income approach utilizing a discounted cash flow valuation technique, considering the current credit profile of the debtor (Level 3). For FPL, primarily estimated using quoted market prices for the same or similar issues (Level 2). (d) Excludes debt totaling $373 million reflected in liabilities associated with assets held for sale on NEE's condensed consolidated balance sheet for which the carrying amount approximates fair value. See Note 9 - Assets and Liabilities Associated with Assets Held for Sale. Special Use Funds - The special use funds noted above and those carried at fair value (see Recurring Fair Value Measurements above) consist of NEE's nuclear decommissioning fund assets of $5,894 million and $5,434 million at September 30, 2017 and December 31, 2016 , respectively ( $3,963 million and $3,665 million , respectively, for FPL). The investments held in the special use funds consist of equity and debt securities which are primarily classified as available for sale and carried at estimated fair value. The amortized cost of debt and equity securities is approximately $1,863 million and $1,604 million , respectively, at September 30, 2017 and $1,820 million and $1,543 million , respectively, at December 31, 2016 ( $1,392 million and $808 million , respectively, at September 30, 2017 and $1,373 million and $764 million , respectively, at December 31, 2016 for FPL). For FPL's special use funds, consistent with regulatory treatment, changes in fair value, including any other than temporary impairment losses, result in a corresponding adjustment to the related regulatory asset or liability accounts. For NEE's non-rate regulated operations, changes in fair value result in a corresponding adjustment to OCI, except for unrealized losses associated with marketable securities considered to be other than temporary, including any credit losses, which are recognized as other than temporary impairment losses on securities held in nuclear decommissioning funds and included in other - net in NEE's condensed consolidated statements of income. Debt securities included in the nuclear decommissioning funds have a weighted-average maturity at September 30, 2017 of approximately eight years at both NEE and FPL. The cost of securities sold is determined using the specific identification method. Realized gains and losses and proceeds from the sale or maturity of available for sale securities are as follows: NEE FPL NEE FPL Three Months Ended Three Months Ended Nine Months Ended Nine Months Ended 2017 2016 2017 2016 2017 2016 2017 2016 (millions) Realized gains $ 29 $ 28 $ 9 $ 15 $ 106 $ 83 $ 35 $ 42 Realized losses $ 15 $ 15 $ 8 $ 8 $ 58 $ 53 $ 34 $ 30 Proceeds from sale or maturity of securities $ 518 $ 902 $ 329 $ 661 $ 1,772 $ 2,330 $ 1,166 $ 1,741 The unrealized gains on available for sale securities are as follows: NEE FPL September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 (millions) Equity securities $ 1,690 $ 1,396 $ 1,188 $ 1,007 Debt securities $ 40 $ 22 $ 31 $ 17 The unrealized losses on available for sale debt securities and the fair value of available for sale debt securities in an unrealized loss position are as follows: NEE FPL September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 (millions) Unrealized losses (a) $ 11 $ 34 $ 9 $ 28 Fair value $ 737 $ 959 $ 546 $ 722 ——————————————— (a) Unrealized losses on available for sale debt securities in an unrealized loss position for greater than twelve months at September 30, 2017 and December 31, 2016 were not material to NEE or FPL. Regulations issued by the FERC and the NRC provide general risk management guidelines to protect nuclear decommissioning funds and to allow such funds to earn a reasonable return. The FERC regulations prohibit, among other investments, investments in any securities of NEE or its subsidiaries, affiliates or associates, excluding investments tied to market indices or mutual funds. Similar restrictions applicable to the decommissioning funds for NEER's nuclear plants are included in the NRC operating licenses for those facilities or in NRC regulations applicable to NRC licensees not in cost-of-service environments. With respect to the decommissioning fund for Seabrook, decommissioning fund contributions and withdrawals are also regulated by the New Hampshire Nuclear Decommissioning Financing Committee pursuant to New Hampshire law. The nuclear decommissioning reserve funds are managed by investment managers who must comply with the guidelines of NEE and FPL and the rules of the applicable regulatory authorities. The funds' assets are invested giving consideration to taxes, liquidity, risk, diversification and other prudent investment objectives.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes NEE's effective income tax rates for the three months ended September 30, 2017 and 2016 were approximately 30% and 35% , respectively. The rates for both periods reflect the benefit of PTCs of approximately $ 27 million and $ 19 million , respectively, related to NEER's wind projects, as well as ITCs and deferred income taxes associated with grants under the Recovery Act (convertible ITCs) totaling approximately $ 51 million and $ 34 million , respectively, related to solar and certain wind projects at NEER. NEE's effective income tax rates for the nine months ended September 30, 2017 and 2016 were approximately 29% and 31% , respectively. The rates for both periods reflect the benefit of PTCs of approximately $ 85 million and $ 92 million , respectively, related to NEER's wind projects, as well as ITCs and deferred income taxes associated with convertible ITCs totaling approximately $ 220 million and $ 115 million , respectively, related to solar and certain wind projects at NEER. NEE recognizes PTCs as wind energy is generated and sold based on a per kWh rate prescribed in applicable federal and state statutes, which may differ significantly from amounts computed, on a quarterly basis, using an overall effective income tax rate anticipated for the full year. NEE uses this method of recognizing PTCs for specific reasons, including that PTCs are an integral part of the financial viability of most wind projects and a fundamental component of such wind projects' results of operations. PTCs, as well as ITCs and deferred income taxes associated with convertible ITCs, can significantly affect NEE's effective income tax rate depending on the amount of pretax income. The amount of PTCs recognized can be significantly affected by wind generation and by the roll off of PTCs after ten years of production (PTC roll off). In April 2016, a court decision was issued approving a reorganization of certain Canadian assets that provided for tax bases in certain of these assets (Canadian tax restructuring). NEE recorded approximately $ 30 million of the associated income tax benefits during the nine months ended September 30, 2016 , which effectively reversed a portion of the income tax charge NEE recorded in the second quarter of 2014 associated with structuring Canadian assets. In addition, consolidating income tax adjustments for the nine months ended September 30, 2016 include an approximately $ 58 million income tax charge related to the sale of NEER's ownership interest in merchant natural gas generation facilities located in Texas with a total generating capacity of 2,884 MW (Texas natural gas generation facilities). See Note 9 - Assets and Liabilities Associated with Assets Held for Sale.

Oncor-Related Transactions

Oncor-Related Transactions	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Oncor-Related Transactions	Oncor-Related Transactions From July 2016 through October 2016, NEE and certain of its affiliates entered into several agreements with Energy Future Holdings Corp. (EFH) and Energy Future Intermediate Holding Company LLC (EFIH), Texas Transmission Holdings Corporation (TTHC), Oncor Management Investment LLC and certain of their affiliates, which would have resulted in NEE owning 100% of Oncor Electric Delivery Company LLC (Oncor) if the transactions contemplated by those agreements would have been consummated. The agreements with EFH and EFIH and TTHC were subject to, among other things, approval by the Public Utility Commission of Texas (PUCT). On April 13, 2017, the PUCT issued a final order denying NEE's purchase of Oncor. On July 6, 2017, EFH and EFIH provided a written notice (notice) to NEE terminating the agreement and plan of merger, dated as of July 29, 2016, as amended (merger agreement), under which EFH Merger Co., LLC (Merger Sub), a direct wholly owned subsidiary of NEE, would have acquired 100% of the equity of reorganized EFH and certain of its subsidiaries, including its indirect ownership of approximately 80% of the outstanding equity interests of Oncor. Subsequently, NEE, EFH and EFIH and a large creditor of EFIH commenced legal proceedings in the U.S. Bankruptcy Court for the District of Delaware (bankruptcy court) in which the chapter 11 bankruptcy proceedings of EFH and EFIH are taking place to determine whether NEE is entitled to receive the $275 million termination fee to which NEE believes it is entitled under the merger agreement and a September 2016 order of the bankruptcy court approving the termination fee payment provisions of the merger agreement (2016 termination fee approval order). In October 2017, the judge presiding over these proceedings issued an opinion and order in one of these legal proceedings that the bankruptcy court's issuance of the 2016 termination fee approval order was based upon a fundamental misapprehension of critical facts by the bankruptcy court and, accordingly, ordered that EFH and EFIH are not authorized to pay the fee. NEE intends to appeal this decision and believes it is erroneous. Until that appeal is ultimately resolved, the remaining legal proceedings in the bankruptcy court between NEE, EFH and EFIH and the large creditor of EFIH as to whether NEE would be entitled to the termination fee if the foregoing appeal is successful have been stayed. NEE is continuing to perform its obligations under the TTHC merger agreement. The TTHC merger agreement becomes terminable by NEE and separately by TTHC and its primary owners (acting together) if the PUCT has not approved the TTHC transaction by October 31, 2017. The TTHC merger agreement contemplates the payment by NEE of a termination fee of $72.3 million in connection with certain specified terminations of the TTHC merger agreement.

Variable Interest Entities (VIE

Variable Interest Entities (VIEs)	9 Months Ended
	Sep. 30, 2017
Variable Interest Entities [Abstract]
Variable Interest Entities (VIEs)	Variable Interest Entities (VIEs) As of September 30, 2017 , NEE had thirty-three VIEs which it consolidated and had interests in certain other VIEs which it did not consolidate. FPL - FPL is considered the primary beneficiary of, and therefore consolidates, a VIE that is a wholly owned bankruptcy remote special purpose subsidiary that it formed in 2007 for the sole purpose of issuing storm-recovery bonds pursuant to the securitization provisions of the Florida Statutes and a financing order of the FPSC. FPL is considered the primary beneficiary because FPL has the power to direct the significant activities of the VIE, and its equity investment, which is subordinate to the bondholder's interest in the VIE, is at risk. Storm restoration costs incurred by FPL during 2005 and 2004 exceeded the amount in FPL's funded storm and property insurance reserve, resulting in a storm reserve deficiency. In 2007, the VIE issued $ 652 million aggregate principal amount of senior secured bonds (storm-recovery bonds), primarily for the after-tax equivalent of the total of FPL's unrecovered balance of the 2004 storm restoration costs, the 2005 storm restoration costs and to reestablish FPL's storm and property insurance reserve. In connection with this financing, net proceeds, after debt issuance costs, to the VIE (approximately $ 644 million ) were used to acquire the storm-recovery property, which includes the right to impose, collect and receive a storm-recovery charge from all customers receiving electric transmission or distribution service from FPL under rate schedules approved by the FPSC or under special contracts, certain other rights and interests that arise under the financing order issued by the FPSC and certain other collateral pledged by the VIE that issued the bonds. The storm-recovery bonds are payable only from and are secured by the storm-recovery property. The bondholders have no recourse to the general credit of FPL. The assets of the VIE were approximately $ 143 million and $ 216 million at September 30, 2017 and December 31, 2016 , respectively, and consisted primarily of storm-recovery property, which are included in both current and noncurrent regulatory assets on NEE's and FPL's condensed consolidated balance sheets. The liabilities of the VIE were approximately $ 145 million and $ 214 million at September 30, 2017 and December 31, 2016 , respectively, and consisted primarily of storm-recovery bonds, which are included in current maturities of long-term debt and long-term debt on NEE's and FPL's condensed consolidated balance sheets. NEER - NEE consolidates thirty-two NEER VIEs. NEER is considered the primary beneficiary of these VIEs since NEER controls the most significant activities of these VIEs, including operations and maintenance, and has the obligation to absorb expected losses of these VIEs. A subsidiary of NEER is the primary beneficiary of, and therefore consolidates, NEP, which consolidates NEP OpCo because of NEP’s controlling interest in the general partner of NEP OpCo. NEP is a limited partnership formed to acquire, manage and own contracted clean energy projects with stable, long-term cash flows through a limited partner interest in NEP OpCo. NEE owns a controlling non-economic general partner interest in NEP and a limited partner interest in NEP OpCo, and presents NEP's limited partner interest as a noncontrolling interest in NEE's consolidated financial statements. At September 30, 2017 , NEE owned common units of NEP OpCo representing a noncontrolling interest in NEP’s operating projects of approximately 65.1% . The assets and liabilities of NEP were approximately $ 7.8 billion and $ 5.7 billion , respectively, at September 30, 2017 , and $ 7.2 billion and $ 5.0 billion , respectively, at December 31, 2016 , and primarily consisted of property, plant and equipment and long-term debt. During the third quarter of 2017, changes to NEP's governance structure were made that, among other things, enhanced NEP unitholder governance rights. As a result of these governance changes, NEE expects to deconsolidate NEP beginning in January 2018. A NEER VIE consolidates two entities which own and operate natural gas/oil electric generation facilities with the capability of producing 110 MW. These entities sell their electric output under power sales contracts to a third party, with expiration dates in 2018 and 2020 . The power sales contracts provide the offtaker the ability to dispatch the facilities and require the offtaker to absorb the cost of fuel. The entities have third-party debt which is secured by liens against the generation facilities and the other assets of these entities. The debt holders have no recourse to the general credit of NEER for the repayment of debt. The assets and liabilities of the VIE were approximately $ 83 million and $ 28 million , respectively, at September 30, 2017 and $ 95 million and $ 42 million , respectively, at December 31, 2016 , and consisted primarily of property, plant and equipment and long-term debt. Two indirect subsidiaries of NEER each contributed, to a NEP subsidiary, an approximately 50 % ownership interest in three entities which own and operate solar PV facilities with the capability of producing a total of approximately 277 MW. Each of the two indirect subsidiaries of NEER is considered a VIE since the non-managing members have no substantive rights over the managing members, and is consolidated by NEER. These three entities sell their electric output to third parties under power sales contracts with expiration dates in 2035 and 2036 . The three entities have third-party debt which is secured by liens against the assets of the entities. The debt holders have no recourse to the general credit of NEER for the repayment of debt. The assets and liabilities of these VIEs were approximately $ 574 million and $ 481 million , respectively, at September 30, 2017 and $ 571 million and $ 487 million , respectively, at December 31, 2016 , and consisted primarily of property, plant and equipment and long-term debt. NEER consolidates a special purpose entity that has insufficient equity at risk and is considered a VIE. The entity provided a loan in the form of a note receivable (see Note 3 - Fair Value of Financial Instruments Recorded at Other than Fair Value) to an unrelated third party, and also issued senior secured bonds which are collateralized by the note receivable. The assets and liabilities of the VIE were approximately $ 505 million and $ 493 million , respectively, at September 30, 2017 , and $ 502 million and $ 511 million , respectively at December 31, 2016 , and consisted primarily of notes receivables (included in other investments and classified as held for sale as of September 30, 2017) and long-term debt. The other twenty-seven NEER VIEs that are consolidated relate to certain subsidiaries which have sold differential membership interests in entities which own and operate wind electric generation and solar PV facilities with the capability of producing a total of approximately 6,649 MW and 374 MW, respectively. These entities sell their electric output either under power sales contracts to third parties with expiration dates ranging from 2018 through 2051 or in the spot market. Certain investors that have no equity at risk in the VIEs hold differential membership interests, which give them the right to receive a portion of the economic attributes of the generation facilities, including certain tax attributes. Certain entities have third-party debt which is secured by liens against the generation facilities and the other assets of these entities or by pledges of NEER's ownership interest in these entities. The debt holders have no recourse to the general credit of NEER for the repayment of debt. The assets and liabilities of these VIEs totaled approximately $ 10.5 billion and $ 5.9 billion , respectively, at September 30, 2017 and $ 10.9 billion and $ 6.9 billion , respectively, at December 31, 2016 . At September 30, 2017 and December 31, 2016 , the assets and liabilities of the VIEs consisted primarily of property, plant and equipment, deferral related to differential membership interests and long-term debt. Other - As of September 30, 2017 and December 31, 2016 , several NEE subsidiaries had investments totaling approximately $2,601 million ( $2,133 million at FPL) and $2,505 million ( $2,049 million at FPL), respectively, which are included in special use funds and other investments on NEE's condensed consolidated balance sheets and in special use funds on FPL's condensed consolidated balance sheets. These investments represented primarily commingled funds and mortgage-backed securities. NEE subsidiaries, including FPL, are not the primary beneficiary and therefore do not consolidate any of these entities because they do not control any of the ongoing activities of these entities, were not involved in the initial design of these entities and do not have a controlling financial interest in these entities. Certain subsidiaries of NEE have noncontrolling interests in entities accounted for under the equity method. These entities are limited partnerships or similar entity structures in which the limited partners or nonmanaging members do not have substantive rights, and therefore are considered VIEs. NEE is not the primary beneficiary because it does not have a controlling financial interest in these entities, and therefore does not consolidate any of these entities. NEE’s investment in these entities totaled approximately $268 million and $234 million at September 30, 2017 and December 31, 2016, respectively, which are included in other investments on NEE’s condensed consolidated balance sheets. Subsidiaries of NEE had committed to invest an additional approximately $90 million in three of the entities as of September 30, 2017 and $ 30 million in two of the entities as of December 31, 2016 .

Equity

Equity	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Equity	Equity Earnings Per Share - The reconciliation of NEE's basic and diluted earnings per share attributable to NEE is as follows: Three Months Ended Nine Months Ended 2017 2016 2017 2016 (millions, except per share amounts) Numerator - net income attributable to NEE $ 847 $ 753 $ 3,223 $ 1,946 Denominator: Weighted-average number of common shares outstanding - basic 469.4 463.3 468.3 461.7 Equity units, stock options, performance share awards, forward sale agreements and restricted stock (a) 4.1 2.7 3.7 3.0 Weighted-average number of common shares outstanding - assuming dilution 473.5 466.0 472.0 464.7 Earnings per share attributable to NEE: Basic $ 1.80 $ 1.63 $ 6.88 $ 4.21 Assuming dilution $ 1.79 $ 1.62 $ 6.83 $ 4.19 ——————————————— (a) Calculated using the treasury stock method. Performance share awards are included in diluted weighted-average number of common shares outstanding based upon what would be issued if the end of the reporting period was the end of the term of the award. Common shares issuable pursuant to equity units, stock options and performance share awards, as well as restricted stock which were not included in the denominator above due to their antidilutive effect were less than one million and approximately 11.2 million for the three months ended September 30, 2017 and 2016 , respectively, and 4.1 million and 3.9 million for the nine months ended September 30, 2017 and 2016 , respectively. NEP's senior unsecured convertible notes (see Note 8) are potentially dilutive securities, however, their effect on the calculation of NEE's diluted EPS for the three and nine months ended September 30, 2017 was not material. Forward Sale Agreements - In November 2016, NEE entered into forward sale agreements with several forward counterparties for 12 million shares of its common stock to be settled on a date or dates to be specified at NEE's direction, no later than November 1, 2017. During the second and third quarters of 2017, NEE issued 1,711,345 shares of its common stock to net share settle all of the shares of its common stock under the forward sale agreements. The forward sale price used to determine the net share settlement amount was calculated based on the initial forward sale price of $124.00 per share, less certain adjustments as specified in the forward sale agreements. NEP Series A Preferred Unit Purchase Agreement - In June 2017, NEP entered into a Series A Preferred Unit Purchase Agreement to issue and sell, on or before December 31, 2017, $550 million of Series A convertible preferred units representing limited partner interests in NEP (NEP preferred units). When issued, holders of the NEP preferred units will be entitled to receive certain cumulative quarterly distributions from NEP, which may be paid, at NEP’s election and subject to certain limitations, in cash, additional NEP preferred units or a combination thereof. Each holder of NEP preferred units (together with its affiliates) may elect to convert all or any portion of its NEP preferred units into common units of NEP initially on a one-for-one basis, subject to certain adjustments (the conversion rate), at any time after June 20, 2019, subject to certain conditions. NEP may elect to convert all or a portion of the NEP preferred units into NEP common units based on the conversion rate at any time after the first anniversary of the date of issuance of the NEP preferred units being converted if certain conditions are met and subject to certain maximum conversion amounts prior to the third anniversary of the final closing date. Accumulated Other Comprehensive Income (Loss) - The components of AOCI, net of tax, are as follows: Accumulated Other Comprehensive Income (Loss) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available for Sale Securities Defined Benefit Pension and Other Benefits Plans Net Unrealized Gains (Losses) on Foreign Currency Translation Other Comprehensive Income (Loss) Related to Equity Method Investee Total (millions) Three Months Ended September 30, 2017 Balances, June 30, 2017 $ (96 ) $ 268 $ (76 ) $ (71 ) $ (22 ) $ 3 Other comprehensive income before reclassifications — 31 — 10 1 42 Amounts reclassified from AOCI 10 (a) (6 ) (b) (1 ) — — 3 Net other comprehensive income (loss) 10 25 (1 ) 10 1 45 Less other comprehensive income attributable to noncontrolling interests (1 ) — — 1 — — Balances, September 30, 2017 $ (85 ) $ 293 $ (77 ) $ (62 ) $ (21 ) $ 48 ——————————————— (a) Reclassified to interest expense in NEE's condensed consolidated statements of income. See Note 2 - Income Statement Impact of Derivative Instruments. (b) Reclassified to gains on disposal of investments and other property - net in NEE's condensed consolidated statements of income. Accumulated Other Comprehensive Income (Loss) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available for Sale Securities Defined Benefit Pension and Other Benefits Plans Net Unrealized Gains (Losses) on Foreign Currency Translation Other Comprehensive Income (Loss) Related to Equity Method Investee Total (millions) Three Months Ended September 30, 2016 Balances, June 30, 2016 $ (134 ) $ 193 $ (69 ) $ (44 ) $ (28 ) $ (82 ) Other comprehensive income (loss) before reclassifications — 31 — (9 ) 3 25 Amounts reclassified from AOCI 17 (a) (2 ) (b) — — — 15 Net other comprehensive income (loss) 17 29 — (9 ) 3 40 Less other comprehensive loss attributable to noncontrolling interests — — — (6 ) — (6 ) Balances, September 30, 2016 $ (117 ) $ 222 $ (69 ) $ (47 ) $ (25 ) $ (36 ) ——————————————— (a) Reclassified to interest expense in NEE's condensed consolidated statements of income. See Note 2 - Income Statement Impact of Derivative Instruments. (b) Reclassified to gains on disposal of investments and other property - net in NEE's condensed consolidated statements of income. Accumulated Other Comprehensive Income (Loss) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available for Sale Securities Defined Benefit Pension and Other Benefits Plans Net Unrealized Gains (Losses) on Foreign Currency Translation Other Comprehensive Income (Loss) Related to Equity Method Investee Total (millions) Nine Months Ended September 30, 2017 Balances, December 31, 2016 $ (100 ) $ 225 $ (83 ) $ (90 ) $ (22 ) $ (70 ) Other comprehensive income before reclassifications — 91 7 30 1 129 Amounts reclassified from AOCI 24 (a) (23 ) (b) (1 ) — — — Net other comprehensive income 24 68 6 30 1 129 Less other comprehensive income attributable to noncontrolling interests 9 — — 2 — 11 Balances, September 30, 2017 $ (85 ) $ 293 $ (77 ) $ (62 ) $ (21 ) $ 48 ——————————————— (a) Reclassified to interest expense in NEE's condensed consolidated statements of income. See Note 2 - Income Statement Impact of Derivative Instruments. (b) Reclassified to gains on disposal of investments and other property - net in NEE's condensed consolidated statements of income. Accumulated Other Comprehensive Income (Loss) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available for Sale Securities Defined Benefit Pension and Other Benefits Plans Net Unrealized Gains (Losses) on Foreign Currency Translation Other Comprehensive Income (Loss) Related to Equity Method Investee Total (millions) Nine Months Ended September 30, 2016 Balances, December 31, 2015 $ (170 ) $ 174 $ (62 ) $ (85 ) $ (24 ) $ (167 ) Other comprehensive income (loss) before reclassifications — 56 (7 ) 19 (1 ) 67 Amounts reclassified from AOCI 53 (a) (8 ) (b) — — — 45 Net other comprehensive income (loss) 53 48 (7 ) 19 (1 ) 112 Less other comprehensive loss attributable to noncontrolling interests — — — (19 ) — (19 ) Balances, September 30, 2016 $ (117 ) $ 222 $ (69 ) $ (47 ) $ (25 ) $ (36 ) ——————————————— (a) Reclassified to interest expense in NEE's condensed consolidated statements of income. See Note 2 - Income Statement Impact of Derivative Instruments. (b) Reclassified to gains on disposal of investments and other property - net in NEE's condensed consolidated statements of income.

Debt

Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Debt	Debt Significant long-term debt issuances and borrowings by subsidiaries of NEE during the nine months ended September 30, 2017 were as follows: Principal Amount Interest Rate Maturity Date (millions) FPL: Other long-term debt $ 200 Variable (a) 2018 NEECH: Debentures $ 1,250 3.55 % 2027 Japanese yen denominated term loan $ 535 Variable (a) 2020 Junior subordinated debentures $ 755 5.11 % 2057 NEER: Senior secured limited-recourse term loans $ 308 Variable (a) 2026 Senior unsecured NEP convertible notes $ 300 1.50 % (b) 2020 Senior unsecured notes $ 1,100 4.25% - 4.50% 2024 - 2027 Senior secured limited-recourse notes $ 200 3.50 % 2037 Other long-term debt $ 480 Variable (a) 2018 - 2019 ——————————————— (a) Variable rate is based on an underlying index plus a margin. Interest rate swap agreements have been entered into with respect to certain of these issuances and a foreign currency swap has been entered into with respect to the Japanese yen denominated term loan. See Note 2. (b) A holder may convert all or a portion of its notes into NEP common units and cash in lieu of any fractional common unit at the conversion rate. At September 30, 2017, the conversion rate, subject to certain adjustments, is 18.9170 NEP common units per $1,000 principal amount of the convertible notes.

Summary of Significant Accounti

Summary of Significant Accounting and Reporting Policies	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting and Reporting Policies	Summary of Significant Accounting and Reporting Policies Revenue Recognition - In May 2014, the FASB issued an accounting standards update, which was subsequently amended, that provides guidance on the recognition of revenue from contracts with customers and requires additional disclosures regarding such contracts. FPL and NEER generate substantially all of NEE’s operating revenues. FPL’s operating revenues are derived primarily from tariff-based sales that result from providing electricity to retail customers with no defined contractual term. For these types of sales, FPL expects that the operating revenues will be equivalent to the electricity delivered and billed in that period under the standards update, which is consistent with current practice. NEER’s operating revenues are derived primarily from the sale of energy. NEER continues to evaluate its individual contracts to determine if the amount or timing of recognition will differ materially from its current revenue recognition practice. NEE and FPL intend to apply this standards update using the modified retrospective approach with the cumulative effect, if any, recognized as an adjustment to retained earnings as of January 1, 2018. Accounting for Partial Sales of Nonfinancial Assets - In February 2017, the FASB issued an accounting standards update regarding the accounting for partial sales of nonfinancial assets. NEE and FPL intend to apply this standards update retrospectively with the cumulative effect recognized as an adjustment to retained earnings and/or additional paid-in capital as of January 1, 2018, concurrent with the FASB's revenue recognition standards update. Based on NEE’s current analysis, this standards update is expected to affect the accounting and related financial statement presentation for the sales of differential membership interests to third-party investors and the sales of NEER assets to indirect subsidiaries of NEP. NEE anticipates the liability reflected as deferral related to differential membership interests - VIEs on NEE's consolidated balance sheets will be reclassified to noncontrolling interests and the amount currently being recognized in benefits associated with differential membership interests - net in NEE's consolidated statements of income will be reflected as a reduction to net income attributable to noncontrolling interests. Additionally, NEE continues to evaluate the sales of differential membership interests to third-party investors to determine if the amount or timing of income attributed to differential membership interests could change materially from amounts recorded under its current accounting method. For NEER asset sales to NEP, NEE anticipates the profit sharing liability currently reflected in noncurrent other liabilities on NEE’s consolidated balance sheets will be reclassified to additional paid-in capital and will no longer be amortized into income. While NEE continues to evaluate this standards update for other potential impacts the adoption may have on its consolidated financial statements, the adoption of this standards update is not expected to have an impact on FPL. Electric Plant, Depreciation and Amortization - NEER reviews the estimated useful lives of its fixed assets on an ongoing basis. NEER's most recent review indicated that the actual lives of certain equipment at its wind plants are expected to be longer than those previously estimated for depreciation purposes. As a result, effective January 1, 2017, NEER changed the estimated useful lives of certain wind plant equipment from 30 years to 35 years to better reflect the period during which these assets are expected to remain in service. This change increased net income attributable to NEE by approximately $15 million and $45 million and basic and diluted earnings per share attributable to NEE by approximately $0.03 and $0.09 for the three and nine months ended September 30, 2017 , respectively. For the year ended December 31, 2017 the change is expected to increase net income attributable to NEE by approximately $60 million . Assets and Liabilities Associated with Assets Held for Sale - In January 2017, an indirect wholly owned subsidiary of NEE completed the sale of its membership interests in its fiber-optic telecommunications business for net cash proceeds of approximately $1.1 billion , after repayment of $370 million of related long-term debt. In connection with the sale and the related consolidating state income tax effects, a gain of approximately $1.1 billion (approximately $685 million after tax) was recorded in NEE's condensed consolidated statements of income during the nine months ended September 30, 2017 and is included in gains on disposal of a business/assets - net. The carrying amounts of the major classes of assets and liabilities that were classified as held for sale on NEE's condensed consolidated balance sheets as of December 31, 2016 primarily represent property, plant and equipment and the related long-term debt. In the second quarter of 2016, a subsidiary of NEER completed the sale of the Texas natural gas generation facilities for net cash proceeds of approximately $456 million , after transaction costs and working capital adjustments. In connection with the sale and the related consolidating state income tax effects, a gain of approximately $254 million ( $106 million after tax) was recorded in NEE's condensed consolidated statements of income for the nine months ended September 30, 2016 and is included in gains on disposal of a business/assets - net. Securitized Storm-Recovery Costs, Storm Fund and Storm Reserve - In September 2017, Hurricane Irma passed through Florida causing damage to much of FPL’s service territory. Damage to FPL’s property was primarily to its distribution facilities. Although FPL has not finalized its estimate of storm restoration costs associated with Hurricane Irma, as of September 30, 2017, FPL estimated storm restoration costs expected to be recoverable from customers through a surcharge to be approximately $1.3 billion , subject to prudence review by the FPSC. Prior to Hurricane Irma, the storm and property insurance reserve (storm reserve) had a deficit balance; therefore, the accrued storm restoration costs eligible for recovery have been deferred and recorded as a noncurrent regulatory asset (approximately $1.1 billion ) with the remaining balance recorded as a current regulatory asset on NEE’s and FPL’s condensed consolidated balance sheets as of September 30, 2017. As provided by FPL's 2016 rate agreement, FPL expects to file a petition with the FPSC in the fourth quarter of 2017 proposing a surcharge equivalent to $4 on a 1,000 kWh residential bill beginning in March of 2018 to recover a portion of storm restoration costs. FPL expects to subsequently petition the FPSC to recover the remaining storm restoration costs, as well as to replenish the storm reserve to approximately $112 million , by the end of 2020. The unpaid portion of the storm restoration costs at September 30, 2017, approximately $1.2 billion , is included in other current liabilities on NEE’s and FPL’s condensed consolidated balance sheets.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments - NEE and its subsidiaries have made commitments in connection with a portion of their projected capital expenditures. Capital expenditures at FPL include, among other things, the cost for construction or acquisition of additional facilities and equipment to meet customer demand, as well as capital improvements to and maintenance of existing facilities and the procurement of nuclear fuel. At NEER, capital expenditures include, among other things, the cost, including capitalized interest, for construction and development of wind and solar projects and the procurement of nuclear fuel, as well as the investment in the development and construction of its natural gas pipeline assets. Capital expenditures for Corporate and Other primarily include the cost to maintain existing transmission facilities at NEET. At September 30, 2017 , estimated capital expenditures for the remainder of 2017 through 2021 for which applicable internal approvals (and also, if required, FPSC approvals for FPL or regulatory approvals for acquisitions) have been received were as follows: Remainder of 2017 2018 2019 2020 2021 Total (millions) FPL: Generation: (a) New (b) $ 350 $ 625 $ 550 $ 1,310 $ 950 $ 3,785 Existing 380 845 675 615 475 2,990 Transmission and distribution 590 2,725 2,530 2,465 2,680 10,990 Nuclear fuel 20 170 150 135 145 620 General and other 190 280 250 220 250 1,190 Total $ 1,530 $ 4,645 $ 4,155 $ 4,745 $ 4,500 $ 19,575 NEER: Wind (c) $ 350 $ 1,925 $ 1,175 $ 45 $ 20 $ 3,515 Solar (d) 115 40 5 — — 160 Nuclear, including nuclear fuel 85 265 225 205 195 975 Natural gas pipelines (e) 105 915 40 20 10 1,090 Other 50 60 70 60 55 295 Total $ 705 $ 3,205 $ 1,515 $ 330 $ 280 $ 6,035 Corporate and Other $ 20 $ 60 $ 85 $ 55 $ 40 $ 260 ——————————————— (a) Includes AFUDC of approximately $ 30 million , $ 85 million , $ 49 million , $ 56 million and $ 35 million for the remainder of 2017 through 2021, respectively. (b) Includes land, generation structures, transmission interconnection and integration and licensing. (c) Consists of capital expenditures for new wind projects, repowering of existing wind projects and related transmission totaling approximately 4,075 MW. (d) Includes capital expenditures for new solar projects and related transmission totaling approximately 175 MW. (e) Includes equity contributions associated with an equity investment in a joint venture that is constructing a natural gas pipeline. The natural gas pipeline is pending FERC approval to proceed with construction. The above estimates are subject to continuing review and adjustment and actual capital expenditures may vary significantly from these estimates. Contracts - In addition to the commitments made in connection with the estimated capital expenditures included in the table in Commitments above, FPL has commitments under long-term purchased power and fuel contracts. As of September 30, 2017 , FPL is obligated under a take-or-pay purchased power contract to pay for 375 MW annually through 2021. FPL has entered into an agreement with JEA to shut down the St. Johns River Power Park coal units (SJRPP) (expected to occur in early January 2018), which will have the effect of terminating this take-or-pay purchased power contract, retiring SJRPP and eliminating FPL's 20% ownership interest share, as of that date. The agreement provides for, among other things, an approximately $90 million payment, upon shut down, by FPL to JEA (the 80% owner of SJRPP), which FPL will recover through the capacity clause as a regulatory asset and amortize over the remaining life of the take-or-pay purchased power contract. At September 30, 2017, the net book value of approximately $193 million was included in plant in service and other property on FPL's balance sheets (electric plant in service and other property for NEE) with respect to SJRPP. Upon shut down of SJRPP, NEE and FPL will reclassify the net book value to a regulatory asset. Approximately $150 million of the regulatory asset will be amortized over 15 years in base rates beginning July 1, 2018 and the remainder will be amortized over 10 years through the environmental cost recovery clause beginning when FPL's base rates are next adjusted in a general base rate case. FPL also has various firm pay-for-performance contracts to purchase approximately 114 MW from certain cogenerators and small power producers with expiration dates ranging from 2026 through 2034. The purchased power contracts provide for capacity and energy payments. Energy payments are based on the actual power taken under these contracts. Capacity payments for the pay-for-performance contracts are subject to the facilities meeting certain contract conditions. FPL has contracts with expiration dates through 2042 for the purchase and transportation of natural gas and coal, and storage of natural gas. See Commitments above. As of September 30, 2017 , NEER has entered into contracts with expiration dates ranging from late October 2017 through 2032 primarily for the purchase of wind turbines, wind towers and solar modules and related construction and development activities, as well as for the supply of uranium, and the conversion, enrichment and fabrication of nuclear fuel and has made commitments for the construction of the natural gas pipelines. Approximately $2.5 billion of related commitments are included in the estimated capital expenditures table in Commitments above. In addition, NEER has contracts primarily for the purchase, transportation and storage of natural gas with expiration dates ranging from late October 2017 through 2020 . The required capacity and/or minimum payments under contracts, including those discussed above, as of September 30, 2017 were estimated as follows: Remainder of 2017 2018 2019 2020 2021 Thereafter (millions) FPL: Capacity charges (a) $ 20 $ 65 $ 50 $ 20 $ 20 $ 250 Minimum charges, at projected prices: (b) Natural gas, including transportation and storage (c) $ 480 $ 1,305 $ 865 $ 910 $ 905 $ 12,135 Coal, including transportation $ 35 $ 35 $ 5 $ — $ — $ — NEER $ 570 $ 1,455 $ 135 $ 105 $ 80 $ 390 Corporate and Other (d)(e) $ 55 $ 45 $ 15 $ 15 $ 10 $ — ——————————————— (a) Capacity charges, substantially all of which are recoverable through the capacity clause, totaled approximately $ 18 million and $ 41 million for the three months ended September 30, 2017 and 2016 , respectively, and approximately $ 58 million and $ 134 million for the nine months ended September 30, 2017 and 2016 , respectively. Energy charges, which are recoverable through the fuel clause, totaled approximately $ 28 million and $ 57 million for the three months ended September 30, 2017 and 2016 , respectively, and approximately $ 70 million and $ 103 million for the nine months ended September 30, 2017 and 2016 , respectively. (b) Recoverable through the fuel clause. (c) Includes approximately $75 million , $295 million , $290 million , $360 million , $390 million and $7,565 million for the remainder of 2017 through 2021 and thereafter, respectively, of firm commitments related to the natural gas transportation agreements with Sabal Trail and Florida Southeast Connection. (d) Includes an approximately $90 million commitment to invest in clean power and technology businesses through 2021. (e) Excludes approximately $170 million for the remainder of 2017 of joint obligations of NEECH and NEER which are included in the NEER amounts above. In January 2017, FPL assumed ownership of a 330 MW coal-fired generation facility located in Indiantown, Florida (Indiantown generation facility) for a purchase price of $451 million (including existing debt of approximately $218 million ). FPL recorded a regulatory asset for approximately $451 million , which is being amortized over nine years and recovered through the capacity clause with a return on the portion of the unamortized balance of the regulatory asset. Prior to assuming ownership of this facility, FPL had a long-term purchased power agreement with this facility for substantially all of its capacity and energy. FPL expects to reduce the plant's operations with the intention of phasing the plant out of service. FPL will recover the fuel costs of the facility through the fuel clause and operating costs through the capacity clause until FPL's next base rate filing where non-fuel cost recovery will be through base rates. Insurance - Liability for accidents at nuclear power plants is governed by the Price-Anderson Act, which limits the liability of nuclear reactor owners to the amount of insurance available from both private sources and an industry retrospective payment plan. In accordance with this Act, NEE maintains $ 450 million of private liability insurance per site, which is the maximum obtainable, and participates in a secondary financial protection system, which provides up to $ 13.0 billion of liability insurance coverage per incident at any nuclear reactor in the U.S. Under the secondary financial protection system, NEE is subject to retrospective assessments of up to $ 1.0 billion ($ 509 million for FPL), plus any applicable taxes, per incident at any nuclear reactor in the U.S., payable at a rate not to exceed $ 152 million ($ 76 million for FPL) per incident per year. NEE and FPL are contractually entitled to recover a proportionate share of such assessments from the owners of minority interests in Seabrook, Duane Arnold and St. Lucie Unit No. 2, which approximates $ 15 million , $ 38 million and $ 19 million , plus any applicable taxes, per incident, respectively. NEE participates in a nuclear insurance mutual company that provides $ 2.75 billion of limited insurance coverage per occurrence per site for property damage, decontamination and premature decommissioning risks at its nuclear plants and a sublimit of $ 1.5 billion for non-nuclear perils, except for Duane Arnold which has a sublimit of $ 1.0 billion . The proceeds from such insurance, however, must first be used for reactor stabilization and site decontamination before they can be used for plant repair. NEE also participates in an insurance program that provides limited coverage for replacement power costs if a nuclear plant is out of service for an extended period of time because of an accident. In the event of an accident at one of NEE's or another participating insured's nuclear plants, NEE could be assessed up to $ 178 million ($ 108 million for FPL), plus any applicable taxes, in retrospective premiums in a policy year. NEE and FPL are contractually entitled to recover a proportionate share of such assessments from the owners of minority interests in Seabrook, Duane Arnold and St. Lucie Unit No. 2, which approximates $ 2 million , $ 5 million and $ 4 million , plus any applicable taxes, respectively. Due to the high cost and limited coverage available from third-party insurers, NEE does not have property insurance coverage for a substantial portion of either its transmission and distribution property or natural gas pipeline assets. If FPL's future storm restoration costs exceed the storm reserve, FPL may recover storm restoration costs, subject to prudence review by the FPSC, either through surcharges approved by the FPSC or through securitization provisions pursuant to Florida law. See Note 9 - Securitized Storm-Recovery Costs, Storm Fund and Storm Reserve. In the event of a loss, the amount 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 from customers in the case of FPL, would be borne by NEE and FPL and could have a material adverse effect on NEE's and FPL's financial condition, results of operations and liquidity.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment Information	Segment Information NEE's reportable segments are FPL, a rate-regulated electric utility, and NEER, a competitive energy business. Corporate and Other represents other business activities and includes eliminating entries. NEE's segment information is as follows: Three Months Ended September 30, 2017 2016 FPL NEER (a) Corporate and Other NEE Consoli- dated FPL NEER (a) Corporate and Other NEE Consoli- dated (millions) Operating revenues $ 3,477 $ 1,333 $ (2 ) $ 4,808 $ 3,283 $ 1,430 $ 92 $ 4,805 Operating expenses (income) - net $ 2,455 $ 964 $ (10 ) $ 3,409 $ 2,362 $ 974 $ 190 $ 3,526 Net income (loss) attributable to NEE $ 566 $ 292 (b) $ (11 ) $ 847 $ 515 $ 307 (b) $ (69 ) $ 753 Nine Months Ended September 30, 2017 2016 FPL NEER (a) Corporate and Other NEE Consoli- dated FPL NEER (a) Corporate NEE Consoli- dated (millions) Operating revenues $ 9,095 $ 4,052 $ 38 $ 13,185 $ 8,337 $ 3,841 $ 279 $ 12,457 Operating expenses (income) - net $ 6,322 $ 2,852 $ (1,079 ) $ 8,095 $ 5,874 $ 2,575 $ 326 $ 8,775 Net income (loss) attributable to NEE $ 1,537 $ 1,069 (b) $ 617 $ 3,223 $ 1,356 $ 765 (b) $ (175 ) $ 1,946 ——————————————— (a) Interest expense allocated from NEECH is based on a deemed capital structure of 70% debt. For this purpose, the deferred credit associated with differential membership interests sold by NEER subsidiaries is included with debt. Residual NEECH corporate interest expense is included in Corporate and Other. (b) See Note 4 for a discussion of NEER's tax benefits related to PTCs. September 30, 2017 December 31, 2016 FPL NEER Corporate and Other NEE Consoli- dated FPL NEER Corporate and Other NEE Consoli- dated (millions) Total assets $ 49,915 $ 44,991 $ 1,875 $ 96,781 $ 45,501 $ 41,743 $ 2,749 $ 89,993

Summarized Financial Informatio

Summarized Financial Information of Capital Holdings	9 Months Ended
	Sep. 30, 2017
Summarized Financial Information [Abstract]
Summarized Financial Information of Capital Holdings	Summarized Financial Information of NEECH NEECH, a 100% owned subsidiary of NEE, provides funding for, and holds ownership interests in, NEE's operating subsidiaries other than FPL. NEECH’s debentures and junior subordinated debentures including those that were registered pursuant to the Securities Act of 1933, as amended, are fully and unconditionally guaranteed by NEE. Condensed consolidating financial information is as follows: Condensed Consolidating Statements of Income Three Months Ended September 30, 2017 2016 NEE (Guarantor) NEECH Other (a) NEE Consoli- dated NEE (Guarantor) NEECH Other (a) NEE Consoli- dated (millions) Operating revenues $ — $ 1,365 $ 3,443 $ 4,808 $ — $ 1,526 $ 3,279 $ 4,805 Operating expenses - net (3 ) (982 ) (2,424 ) (3,409 ) (5 ) (1,032 ) (2,489 ) (3,526 ) Interest expense (1 ) (259 ) (121 ) (381 ) — (255 ) (114 ) (369 ) Equity in earnings of subsidiaries 830 — (830 ) — 765 — (765 ) — Other income - net — 181 21 202 4 276 17 297 Income (loss) before income taxes 826 305 89 1,220 764 515 (72 ) 1,207 Income tax expense (benefit) (21 ) 30 355 364 11 141 266 418 Net income (loss) 847 275 (266 ) 856 753 374 (338 ) 789 Less net income attributable to noncontrolling interests — 9 — 9 — 36 — 36 Net income (loss) attributable to NEE $ 847 $ 266 $ (266 ) $ 847 $ 753 $ 338 $ (338 ) $ 753 Nine Months Ended September 30, 2017 2016 NEE (Guarantor) NEECH Other (a) NEE Consoli- dated NEE (Guarantor) NEECH Other (a) NEE Consoli- dated (millions) Operating revenues $ — $ 4,154 $ 9,031 $ 13,185 $ — $ 4,131 $ 8,326 $ 12,457 Operating expenses - net (13 ) (1,806 ) (6,276 ) (8,095 ) (14 ) (2,756 ) (6,005 ) (8,775 ) Interest expense (2 ) (809 ) (360 ) (1,171 ) (1 ) (1,137 ) (342 ) (1,480 ) Equity in earnings of subsidiaries 3,179 — (3,179 ) — 1,989 — (1,989 ) — Other income - net 1 630 31 662 5 603 57 665 Income (loss) before income taxes 3,165 2,169 (753 ) 4,581 1,979 841 47 2,867 Income tax expense (benefit) (58 ) 468 919 1,329 33 71 775 879 Net income (loss) 3,223 1,701 (1,672 ) 3,252 1,946 770 (728 ) 1,988 Less net income attributable to noncontrolling interests — 29 — 29 — 42 — 42 Net income (loss) attributable to NEE $ 3,223 $ 1,672 $ (1,672 ) $ 3,223 $ 1,946 $ 728 $ (728 ) $ 1,946 ——————————————— (a) Represents primarily FPL and consolidating adjustments. Condensed Consolidating Statements of Comprehensive Income Three Months Ended September 30, 2017 2016 NEE (Guarantor) NEECH Other (a) NEE Consoli- dated NEE (Guarantor) NEECH Other (a) NEE Consoli- dated (millions) Comprehensive income (loss) attributable to NEE $ 892 $ 312 $ (312 ) $ 892 $ 799 $ 384 $ (384 ) $ 799 Nine Months Ended September 30, 2017 2016 NEE (Guarantor) NEECH Other (a) NEE Consoli- dated NEE (Guarantor) NEECH Other (a) NEE Consoli- dated (millions) Comprehensive income (loss) attributable to NEE $ 3,341 $ 1,784 $ (1,784 ) $ 3,341 $ 2,078 $ 866 $ (866 ) $ 2,078 ——————————————— (a) Represents primarily FPL and consolidating adjustments. Condensed Consolidating Balance Sheets September 30, 2017 December 31, 2016 NEE (Guaran- tor) NEECH Other (a) NEE Consoli- dated NEE (Guaran- tor) NEECH Other (a) NEE Consoli- dated (millions) PROPERTY, PLANT AND EQUIPMENT Electric plant in service and other property $ 23 $ 41,530 $ 50,995 $ 92,548 $ 28 $ 38,671 $ 48,314 $ 87,013 Accumulated depreciation and amortization (16 ) (8,714 ) (12,730 ) (21,460 ) (18 ) (7,778 ) (12,305 ) (20,101 ) Total property, plant and equipment - net 7 32,816 38,265 71,088 10 30,893 36,009 66,912 CURRENT ASSETS Cash and cash equivalents 1 1,370 10 1,381 1 1,258 33 1,292 Receivables 340 1,441 969 2,750 88 1,615 736 2,439 Other 4 1,257 1,635 2,896 2 1,877 1,799 3,678 Total current assets 345 4,068 2,614 7,027 91 4,750 2,568 7,409 OTHER ASSETS Investment in subsidiaries 26,139 — (26,139 ) — 24,323 — (24,323 ) — Other 821 10,152 7,693 18,666 867 8,992 5,813 15,672 Total other assets 26,960 10,152 (18,446 ) 18,666 25,190 8,992 (18,510 ) 15,672 TOTAL ASSETS $ 27,312 $ 47,036 $ 22,433 $ 96,781 $ 25,291 $ 44,635 $ 20,067 $ 89,993 CAPITALIZATION Common shareholders' equity $ 26,398 $ 8,732 $ (8,732 ) $ 26,398 $ 24,341 $ 7,699 $ (7,699 ) $ 24,341 Noncontrolling interests — 923 — 923 — 990 — 990 Long-term debt — 20,290 10,055 30,345 — 18,112 9,706 27,818 Total capitalization 26,398 29,945 1,323 57,666 24,341 26,801 2,007 53,149 CURRENT LIABILITIES Debt due within one year — 2,821 1,793 4,614 — 2,237 785 3,022 Accounts payable 1 1,559 696 2,256 1 2,668 778 3,447 Other 286 1,885 2,563 4,734 231 2,624 1,595 4,450 Total current liabilities 287 6,265 5,052 11,604 232 7,529 3,158 10,919 OTHER LIABILITIES AND DEFERRED CREDITS Asset retirement obligations — 880 2,002 2,882 — 816 1,920 2,736 Deferred income taxes 37 3,439 9,087 12,563 82 3,002 8,017 11,101 Other 590 6,507 4,969 12,066 636 6,487 4,965 12,088 Total other liabilities and deferred credits 627 10,826 16,058 27,511 718 10,305 14,902 25,925 COMMITMENTS AND CONTINGENCIES TOTAL CAPITALIZATION AND LIABILITIES $ 27,312 $ 47,036 $ 22,433 $ 96,781 $ 25,291 $ 44,635 $ 20,067 $ 89,993 ——————————————— (a) Represents primarily FPL and consolidating adjustments. Condensed Consolidating Statements of Cash Flows Nine Months Ended September 30, 2017 2016 NEE (Guaran- tor) NEECH Other (a) NEE Consoli- dated NEE (Guaran- tor) NEECH Other (a) NEE Consoli- dated (millions) NET CASH PROVIDED BY OPERATING ACTIVITIES $ 1,464 $ 1,793 $ 1,903 $ 5,160 $ 1,164 $ 1,781 $ 2,349 $ 5,294 CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures, independent power and other investments and nuclear fuel purchases — (4,808 ) (3,779 ) (8,587 ) (1 ) (4,831 ) (3,097 ) (7,929 ) Proceeds from sale of the fiber-optic telecommunications business — 1,482 — 1,482 — — — — Capital contributions from NEE (46 ) — 46 — (432 ) — 432 — Sale of independent power and other investments of NEER — 159 — 159 — 395 — 395 Proceeds from sale or maturity of securities in special use funds and other investments — 819 1,240 2,059 — 860 1,775 2,635 Purchases of securities in special use funds and other investments — (827 ) (1,319 ) (2,146 ) — (874 ) (1,837 ) (2,711 ) Proceeds from sales of noncontrolling interests in NEP — — — — — 645 — 645 Other - net 7 163 28 198 — (49 ) 31 (18 ) Net cash used in investing activities (39 ) (3,012 ) (3,784 ) (6,835 ) (433 ) (3,854 ) (2,696 ) (6,983 ) CASH FLOWS FROM FINANCING ACTIVITIES Issuances of long-term debt — 4,995 201 5,196 — 4,494 150 4,644 Retirements of long-term debt — (3,819 ) (73 ) (3,892 ) — (2,392 ) (262 ) (2,654 ) Proceeds from differential membership investors — 340 — 340 — 328 — 328 Net change in commercial paper — 995 811 1,806 — (154 ) 408 254 Proceeds from other short-term debt — — 200 200 — — 500 500 Repayments of other short-term debt — — (2 ) (2 ) — (212 ) (150 ) (362 ) Issuances of common stock - net 36 — — 36 528 — — 528 Dividends on common stock (1,382 ) — — (1,382 ) (1,205 ) — — (1,205 ) Contributions from (dividends to) NEE — (722 ) 722 — — 294 (294 ) — Other - net (79 ) (458 ) (1 ) (538 ) (54 ) (197 ) 17 (234 ) Net cash provided by (used in) financing activities (1,425 ) 1,331 1,858 1,764 (731 ) 2,161 369 1,799 Net increase (decrease) in cash and cash equivalents — 112 (23 ) 89 — 88 22 110 Cash and cash equivalents at beginning of period 1 1,258 33 1,292 — 546 25 571 Cash and cash equivalents at end of period $ 1 $ 1,370 $ 10 $ 1,381 $ — $ 634 $ 47 $ 681 ——————————————— (a) Represents primarily FPL and consolidating adjustments.

Summary of Significant Accoun21

Summary of Significant Accounting and Reporting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Derivative Instruments	NEE and FPL use derivative instruments (primarily swaps, options, futures and forwards) to manage the physical and financial risks inherent in the purchase and sale of fuel and electricity, as well as interest rate and foreign currency exchange rate risk associated primarily with outstanding and expected future debt issuances and borrowings, and to optimize the value of NEER's power generation and gas infrastructure assets. NEE and FPL do not utilize hedge accounting for their cash flow and fair value hedges. With respect to commodities related to NEE's competitive energy business, NEER employs risk management procedures to conduct its activities related to optimizing the value of its power generation and gas infrastructure assets, providing full energy and capacity requirements services primarily to distribution utilities, and engaging in power and gas marketing and trading activities to take advantage of expected future favorable price movements and changes in the expected volatility of prices in the energy markets. These risk management activities involve the use of derivative instruments executed within prescribed limits to manage the risk associated with fluctuating commodity prices. Transactions in derivative instruments are executed on recognized exchanges or via the OTC markets, depending on the most favorable credit terms and market execution factors. For NEER's power generation and gas infrastructure assets, derivative instruments are used to hedge all or a portion of the expected output of these assets. These hedges are designed to reduce the effect of adverse changes in the wholesale forward commodity markets associated with NEER's power generation and gas infrastructure assets. With regard to full energy and capacity requirements services, NEER is required to vary the quantity of energy and related services based on the load demands of the customers served. For this type of transaction, derivative instruments are used to hedge the anticipated electricity quantities required to serve these customers and reduce the effect of unfavorable changes in the forward energy markets. Additionally, NEER takes positions in energy markets based on differences between actual forward market levels and management's view of fundamental market conditions, including supply/demand imbalances, changes in traditional flows of energy, changes in short- and long-term weather patterns and anticipated regulatory and legislative outcomes. NEER uses derivative instruments to realize value from these market dislocations, subject to strict risk management limits around market, operational and credit exposure. Derivative instruments, when required to be marked to market, are recorded on NEE's and FPL's condensed consolidated balance sheets as either an asset or liability measured at fair value. At FPL, substantially all changes in the derivatives' fair value are deferred as a regulatory asset or liability until the contracts are settled, and, upon settlement, any gains or losses are passed through the fuel clause. For NEE's non-rate regulated operations, predominantly NEER, essentially all changes in the derivatives' fair value for power purchases and sales, fuel sales and trading activities are recognized on a net basis in operating revenues; fuel purchases used in the production of electricity are recognized in fuel, purchased power and interchange expense; and the equity method investees' related activity is recognized in equity in earnings of equity method investees in NEE's condensed consolidated statements of income. Settlement gains and losses are included within the line items in the condensed consolidated statements of income to which they relate. Transactions for which physical delivery is deemed not to have occurred are presented on a net basis in the condensed consolidated statements of income. For commodity derivatives, NEE believes that, where offsetting positions exist at the same location for the same time, the transactions are considered to have been netted and therefore physical delivery has been deemed not to have occurred for financial reporting purposes. Settlements related to derivative instruments are primarily recognized in net cash provided by operating activities in NEE's and FPL's condensed consolidated statements of cash flows. For interest rate and foreign currency derivative instruments, all changes in the derivatives' fair value, as well as the transaction gain or loss on foreign denominated debt, are recognized in interest expense in NEE's condensed consolidated statements of income.
Fair Value Measurements	Fair Value Measurements The fair value of assets and liabilities are determined using either unadjusted quoted prices in active markets (Level 1) or pricing inputs that are observable (Level 2) whenever that information is available and using unobservable inputs (Level 3) to estimate fair value only when relevant observable inputs are not available. NEE and FPL use several different valuation techniques to measure the fair value of assets and liabilities, relying primarily on the market approach of using prices and other market information for identical and/or comparable assets and liabilities for those assets and liabilities that are measured at fair value on a recurring basis. NEE's and FPL's assessment of the significance of any particular input to the fair value measurement requires judgment and may affect placement within the fair value hierarchy levels. Non-performance risk, including the consideration of a credit valuation adjustment, is also considered in the determination of fair value for all assets and liabilities measured at fair value. Cash Equivalents and Restricted Cash - NEE and FPL hold investments in money market funds. The fair value of these funds is estimated using a market approach based on current observable market prices. Special Use Funds and Other Investments - NEE and FPL hold primarily debt and equity securities directly, as well as indirectly through commingled funds. Substantially all directly held equity securities are valued at their quoted market prices. For directly held debt securities, multiple prices and price types are obtained from pricing vendors whenever possible, which enables cross-provider validations. A primary price source is identified based on asset type, class or issue of each security. Commingled funds, which are similar to mutual funds, are maintained by banks or investment companies and hold certain investments in accordance with a stated set of objectives. The fair value of commingled funds is primarily derived from the quoted prices in active markets of the underlying securities. Because the fund shares are offered to a limited group of investors, they are not considered to be traded in an active market. Derivative Instruments - NEE and FPL measure the fair value of commodity contracts using a combination of market and income approaches utilizing prices observed on commodities exchanges and in the OTC markets, or through the use of industry-standard valuation techniques, such as option modeling or discounted cash flows techniques, incorporating both observable and unobservable valuation inputs. The resulting measurements are the best estimate of fair value as represented by the transfer of the asset or liability through an orderly transaction in the marketplace at the measurement date. Most exchange-traded derivative assets and liabilities are valued directly using unadjusted quoted prices. For exchange-traded derivative assets and liabilities where the principal market is deemed to be inactive based on average daily volumes and open interest, the measurement is established using settlement prices from the exchanges, and therefore considered to be valued using other observable inputs. NEE, through its subsidiaries, including FPL, also enters into OTC commodity contract derivatives. The majority of these contracts are transacted at liquid trading points, and the prices for these contracts are verified using quoted prices in active markets from exchanges, brokers or pricing services for similar contracts. NEE, through NEER, also enters into full requirements contracts, which, in most cases, meet the definition of derivatives and are measured at fair value. These contracts typically have one or more inputs that are not observable and are significant to the valuation of the contract. In addition, certain exchange and non-exchange traded derivative options at NEE have one or more significant inputs that are not observable, and are valued using industry-standard option models. In all cases where NEE and FPL use significant unobservable inputs for the valuation of a commodity contract, consideration is given to the assumptions that market participants would use in valuing the asset or liability. The primary input to the valuation models for commodity contracts is the forward commodity curve for the respective instruments. Other inputs include, but are not limited to, assumptions about market liquidity, volatility, correlation and contract duration as more fully described below in Significant Unobservable Inputs Used in Recurring Fair Value Measurements. In instances where the reference markets are deemed to be inactive or do not have transactions for a similar contract, the derivative assets and liabilities may be valued using significant other observable inputs and potentially significant unobservable inputs. In such instances, the valuation for these contracts is established using techniques including extrapolation from or interpolation between actively traded contracts, or estimated basis adjustments from liquid trading points. NEE and FPL regularly evaluate and validate the inputs used to determine fair value by a number of methods, consisting of various market price verification procedures, including the use of pricing services and multiple broker quotes to support the market price of the various commodities. In all cases where there are assumptions and models used to generate inputs for valuing derivative assets and liabilities, the review and verification of the assumptions, models and changes to the models are undertaken by individuals that are independent of those responsible for estimating fair value. NEE uses interest rate contracts and foreign currency contracts to mitigate and adjust interest rate and foreign currency exchange exposure related primarily to certain outstanding and expected future debt issuances and borrowings when deemed appropriate based on market conditions or when required by financing agreements. NEE estimates the fair value of these derivatives using an income approach based on a discounted cash flows valuation technique utilizing the net amount of estimated future cash inflows and outflows related to the agreements.
Revenue Recognition	Revenue Recognition - In May 2014, the FASB issued an accounting standards update, which was subsequently amended, that provides guidance on the recognition of revenue from contracts with customers and requires additional disclosures regarding such contracts. FPL and NEER generate substantially all of NEE’s operating revenues. FPL’s operating revenues are derived primarily from tariff-based sales that result from providing electricity to retail customers with no defined contractual term. For these types of sales, FPL expects that the operating revenues will be equivalent to the electricity delivered and billed in that period under the standards update, which is consistent with current practice. NEER’s operating revenues are derived primarily from the sale of energy. NEER continues to evaluate its individual contracts to determine if the amount or timing of recognition will differ materially from its current revenue recognition practice. NEE and FPL intend to apply this standards update using the modified retrospective approach with the cumulative effect, if any, recognized as an adjustment to retained earnings as of January 1, 2018.
Accounting for Partial Sales of Nonfinancial Assets	Accounting for Partial Sales of Nonfinancial Assets - In February 2017, the FASB issued an accounting standards update regarding the accounting for partial sales of nonfinancial assets. NEE and FPL intend to apply this standards update retrospectively with the cumulative effect recognized as an adjustment to retained earnings and/or additional paid-in capital as of January 1, 2018, concurrent with the FASB's revenue recognition standards update. Based on NEE’s current analysis, this standards update is expected to affect the accounting and related financial statement presentation for the sales of differential membership interests to third-party investors and the sales of NEER assets to indirect subsidiaries of NEP. NEE anticipates the liability reflected as deferral related to differential membership interests - VIEs on NEE's consolidated balance sheets will be reclassified to noncontrolling interests and the amount currently being recognized in benefits associated with differential membership interests - net in NEE's consolidated statements of income will be reflected as a reduction to net income attributable to noncontrolling interests. Additionally, NEE continues to evaluate the sales of differential membership interests to third-party investors to determine if the amount or timing of income attributed to differential membership interests could change materially from amounts recorded under its current accounting method. For NEER asset sales to NEP, NEE anticipates the profit sharing liability currently reflected in noncurrent other liabilities on NEE’s consolidated balance sheets will be reclassified to additional paid-in capital and will no longer be amortized into income. While NEE continues to evaluate this standards update for other potential impacts the adoption may have on its consolidated financial statements, the adoption of this standards update is not expected to have an impact on FPL.
Electric Plant, Depreciation and Amortization	Electric Plant, Depreciation and Amortization - NEER reviews the estimated useful lives of its fixed assets on an ongoing basis. NEER's most recent review indicated that the actual lives of certain equipment at its wind plants are expected to be longer than those previously estimated for depreciation purposes. As a result, effective January 1, 2017, NEER changed the estimated useful lives of certain wind plant equipment from 30 years to 35 years to better reflect the period during which these assets are expected to remain in service.

Employee Retirement Benefits (T

Employee Retirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2017
Retirement Benefits [Abstract]
Net periodic benefit (income) cost	The components of net periodic (income) cost for the plans are as follows: Pension Benefits Postretirement Benefits Pension Benefits Postretirement Benefits Three Months Ended Three Months Ended Nine Months Ended Nine Months Ended 2017 2016 2017 2016 2017 2016 2017 2016 (millions) Service cost $ 16 $ 16 $ — $ — $ 49 $ 47 $ 1 $ 1 Interest cost 21 26 2 3 63 78 6 10 Expected return on plan assets (67 ) (65 ) — — (202 ) (195 ) — — Amortization of prior service cost (benefit) — — (4 ) — (1 ) 1 (6 ) (2 ) Special termination benefits — — — — 38 — — — Postretirement benefits settlement — — — — — — 1 — Net periodic (income) cost at NEE $ (30 ) $ (23 ) $ (2 ) $ 3 $ (53 ) $ (69 ) $ 2 $ 9 Net periodic (income) cost at FPL $ (20 ) $ (15 ) $ (2 ) $ 2 $ (32 ) $ (44 ) $ 1 $ 7

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative [Line Items]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	Fair Value of Derivative Instruments - The tables below present NEE's and FPL's gross derivative positions at September 30, 2017 and December 31, 2016 , as required by disclosure rules. However, the majority of the underlying contracts are subject to master netting agreements and generally would not be contractually settled on a gross basis. Therefore, the tables below also present the derivative positions on a net basis, which reflect the offsetting of positions of certain transactions within the portfolio, the contractual ability to settle contracts under master netting arrangements and the netting of margin cash collateral (see Note 3 - Recurring Fair Value Measurements for netting information), as well as the location of the net derivative position on the condensed consolidated balance sheets. September 30, 2017 Gross Basis Net Basis Assets Liabilities Assets Liabilities (millions) NEE: Commodity contracts $ 4,081 $ 2,546 $ 1,885 $ 403 Interest rate contracts 76 299 92 315 Foreign currency contracts — 42 11 53 Total fair values $ 4,157 $ 2,887 $ 1,988 $ 771 FPL: Commodity contracts $ 11 $ 7 $ 7 $ 3 Net fair value by NEE balance sheet line item: Current derivative assets (a) $ 442 Noncurrent derivative assets (b) 1,546 Current derivative liabilities $ 257 Noncurrent derivative liabilities (c) 514 Total derivatives $ 1,988 $ 771 Net fair value by FPL balance sheet line item: Current derivative assets $ 7 Current other liabilities $ 3 Total derivatives $ 7 $ 3 ——————————————— (a) Reflects the netting of approximately $74 million in margin cash collateral received from counterparties. (b) Reflects the netting of approximately $12 million in margin cash collateral received from counterparties. (c) Reflects the netting of approximately $33 million in margin cash collateral paid to counterparties. December 31, 2016 Gross Basis Net Basis Assets Liabilities Assets Liabilities (millions) NEE: Commodity contracts $ 4,590 $ 2,968 $ 1,938 $ 483 Interest rate contracts 288 284 296 292 Foreign currency contracts 1 106 1 106 Total fair values $ 4,879 $ 3,358 $ 2,235 $ 881 FPL: Commodity contracts $ 212 $ 4 $ 209 $ 1 Net fair value by NEE balance sheet line item: Current derivative assets (a) $ 885 Noncurrent derivative assets (b) 1,350 Current derivative liabilities $ 404 Noncurrent derivative liabilities 477 Total derivatives $ 2,235 $ 881 Net fair value by FPL balance sheet line item: Current derivative assets $ 209 Current other liabilities $ 1 Total derivatives $ 209 $ 1 ——————————————— (a) Reflects the netting of approximately $96 million in margin cash collateral received from counterparties. (b) Reflects the netting of approximately $71 million in margin cash collateral received from counterparties.
Net Notional Volumes	NEE and FPL had derivative commodity contracts for the following net notional volumes: September 30, 2017 December 31, 2016 Commodity Type NEE FPL NEE FPL (millions) Power (107 ) MWh — (84 ) MWh — Natural gas 312 MMBtu 255 MMBtu 1,002 MMBtu 618 MMBtu Oil (3 ) barrels — (7 ) barrels —
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	Gains (losses) related to NEE's derivatives are recorded in NEE's condensed consolidated statements of income as follows: Three Months Ended Nine Months Ended 2017 2016 2017 2016 (millions) Commodity contracts: (a) Operating revenues $ 114 $ 264 $ 538 $ 502 Fuel, purchased power and interchange — 1 — (1 ) Foreign currency contracts - interest expense (4 ) 15 53 96 Foreign currency contracts - other - net (2 ) 1 (5 ) (2 ) Interest rate contracts - interest expense (41 ) (58 ) (232 ) (515 ) Losses reclassified from AOCI to interest expense: Interest rate contracts (13 ) (18 ) (36 ) (71 ) Foreign currency contracts (1 ) (3 ) (80 ) (9 ) Total $ 53 $ 202 $ 238 $ — ——————————————— (a) For the three and nine months ended September 30, 2017 , FPL recorded losses of approximately $12 million and $164 million , respectively, related to commodity contracts as regulatory assets on its condensed consolidated balance sheets. For the three and nine months ended September 30, 2016 , FPL recorded approximately $35 million of losses and $35 million of gains, respectively, related to commodity contracts as regulatory assets and regulatory liabilities on its condensed consolidated balance sheets.

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Financial assets and liabilities and other fair value measurements	Recurring Fair Value Measurements - NEE's and FPL's financial assets and liabilities and other fair value measurements made on a recurring basis by fair value hierarchy level are as follows: September 30, 2017 Level 1 Level 2 Level 3 Netting (a) Total (millions) Assets: Cash equivalents and restricted cash: (b) NEE - equity securities $ 999 $ — $ — $ 999 FPL - equity securities $ 112 $ — $ — $ 112 Special use funds: (c) NEE: Equity securities $ 1,590 $ 1,695 (d) $ — $ 3,285 U.S. Government and municipal bonds $ 404 $ 138 $ — $ 542 Corporate debt securities $ 1 $ 772 $ — $ 773 Mortgage-backed securities $ — $ 452 $ — $ 452 Other debt securities $ — $ 126 $ — $ 126 FPL: Equity securities $ 442 $ 1,545 (d) $ — $ 1,987 U.S. Government and municipal bonds $ 301 $ 115 $ — $ 416 Corporate debt securities $ — $ 542 $ — $ 542 Mortgage-backed securities $ — $ 343 $ — $ 343 Other debt securities $ — $ 114 $ — $ 114 Other investments: NEE: Equity securities $ 25 $ 10 $ — $ 35 Debt securities $ 32 $ 109 $ — $ 141 Derivatives: NEE: Commodity contracts $ 1,168 $ 1,503 $ 1,410 $ (2,196 ) $ 1,885 (e) Interest rate contracts $ — $ 76 $ — $ 16 $ 92 (e) Foreign currency contracts $ — $ — $ — $ 11 $ 11 (e) FPL - commodity contracts $ — $ 10 $ 1 $ (4 ) $ 7 (e) Liabilities: Derivatives: NEE: Commodity contracts $ 1,144 $ 900 $ 502 $ (2,143 ) $ 403 (e) Interest rate contracts $ — $ 171 $ 128 $ 16 $ 315 (e) Foreign currency contracts $ — $ 42 $ — $ 11 $ 53 (e) FPL - commodity contracts $ — $ 5 $ 2 $ (4 ) $ 3 (e) ——————————————— (a) Includes the effect of the contractual ability to settle contracts under master netting arrangements and the netting of margin cash collateral payments and receipts. NEE and FPL also have contract settlement receivable and payable balances that are subject to the master netting arrangements but are not offset within the condensed consolidated balance sheets and are recorded in customer receivables - net and accounts payable, respectively. (b) Includes restricted cash of approximately $137 million ( $99 million for FPL) in other current assets on the condensed consolidated balance sheets. (c) Excludes investments accounted for under the equity method and loans not measured at fair value on a recurring basis. See Fair Value of Financial Instruments Recorded at Other than Fair Value below. (d) Primarily invested in commingled funds whose underlying securities would be Level 1 if those securities were held directly by NEE or FPL. (e) See Note 2 - Fair Value of Derivative Instruments for a reconciliation of net derivatives to NEE's and FPL's condensed consolidated balance sheets. December 31, 2016 Level 1 Level 2 Level 3 Netting (a) Total (millions) Assets: Cash equivalents and restricted cash: (b) NEE - equity securities $ 982 $ — $ — $ 982 FPL - equity securities $ 120 $ — $ — $ 120 Special use funds: (c) NEE: Equity securities $ 1,410 $ 1,503 (d) $ — $ 2,913 U.S. Government and municipal bonds $ 296 $ 170 $ — $ 466 Corporate debt securities $ 1 $ 763 $ — $ 764 Mortgage-backed securities $ — $ 498 $ — $ 498 Other debt securities $ — $ 81 $ — $ 81 FPL: Equity securities $ 373 $ 1,372 (d) $ — $ 1,745 U.S. Government and municipal bonds $ 221 $ 141 $ — $ 362 Corporate debt securities $ — $ 547 $ — $ 547 Mortgage-backed securities $ — $ 384 $ — $ 384 Other debt securities $ — $ 70 $ — $ 70 Other investments: NEE: Equity securities $ 26 $ 9 $ — $ 35 Debt securities $ 8 $ 153 $ — $ 161 Derivatives: NEE: Commodity contracts $ 1,563 $ 1,827 $ 1,200 $ (2,652 ) $ 1,938 (e) Interest rate contracts $ — $ 285 $ 3 $ 8 $ 296 (e) Foreign currency contracts $ — $ 1 $ — $ — $ 1 (e) FPL - commodity contracts $ — $ 208 $ 4 $ (3 ) $ 209 (e) Liabilities: Derivatives: NEE: Commodity contracts $ 1,476 $ 980 $ 512 $ (2,485 ) $ 483 (e) Interest rate contracts $ — $ 171 $ 113 $ 8 $ 292 (e) Foreign currency contracts $ — $ 106 $ — $ — $ 106 (e) FPL - commodity contracts $ — $ 1 $ 3 $ (3 ) $ 1 (e) ——————————————— (a) Includes the effect of the contractual ability to settle contracts under master netting arrangements and the netting of margin cash collateral payments and receipts. NEE and FPL also have contract settlement receivable and payable balances that are subject to the master netting arrangements but are not offset within the condensed consolidated balance sheets and are recorded in customer receivables - net and accounts payable, respectively. (b) Includes restricted cash of approximately $164 million ( $120 million for FPL) in other current assets on the condensed consolidated balance sheets. (c) Excludes investments accounted for under the equity method and loans not measured at fair value on a recurring basis. See Fair Value of Financial Instruments Recorded at Other than Fair Value below. (d) Primarily invested in commingled funds whose underlying securities would be Level 1 if those securities were held directly by NEE or FPL. (e) See Note 2 - Fair Value of Derivative Instruments for a reconciliation of net derivatives to NEE's and FPL's condensed consolidated balance sheets.
Significant unobservable inputs used in valuation of contracts categorized as Level 3	The significant unobservable inputs used in the valuation of NEE's commodity contracts categorized as Level 3 of the fair value hierarchy at September 30, 2017 are as follows: Fair Value at Valuation Significant Transaction Type September 30, 2017 Technique(s) Unobservable Inputs Range Assets Liabilities (millions) Forward contracts - power $ 860 $ 263 Discounted cash flow Forward price (per MWh) $— — $87 Forward contracts - gas 28 14 Discounted cash flow Forward price (per MMBtu) $1 — $6 Options - power 48 19 Option models Implied correlations 1% — 100% Implied volatilities 8% — 227% Options - primarily gas 149 195 Option models Implied correlations 1% — 100% Implied volatilities 1% — 104% Full requirements and unit contingent contracts 325 11 Discounted cash flow Forward price (per MWh) $(19) — $206 Customer migration rate (a) —% — 20% Total $ 1,410 $ 502 ——————————————— (a) Applies only to full requirements contracts.
Reconciliation of changes in the fair value measured based on significant unobservable inputs	The reconciliation of changes in the fair value of derivatives that are based on significant unobservable inputs is as follows: Three Months Ended September 30, 2017 2016 NEE FPL NEE FPL (millions) Fair value of net derivatives based on significant unobservable inputs at June 30 $ 724 $ (2 ) $ 532 $ (1 ) Realized and unrealized gains (losses): Included in earnings (a) 158 — 153 — Included in other comprehensive income (loss) (b) (5 ) — — — Purchases 38 — 28 — Settlements (77 ) 1 (72 ) 1 Issuances (59 ) — (16 ) — Transfers in (c) — — 1 — Transfers out (c) 1 — 36 — Fair value of net derivatives based on significant unobservable inputs at September 30 $ 780 $ (1 ) $ 662 $ — The amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to derivatives still held at the reporting date (d) $ 213 $ — $ 150 $ — ——————————————— (a) For the three months ended September 30, 2017 and 2016 , realized and unrealized gains of approximately $164 million and $198 million , respectively, are reflected in the condensed consolidated statements of income in operating revenues and the balance is primarily reflected in interest expense. (b) Reflected in net unrealized gains on foreign currency translation on the condensed consolidated statements of comprehensive income. (c) Transfers into Level 3 were a result of decreased observability of market data and transfers from Level 3 to Level 2 were a result of increased observability of market data. NEE's and FPL's policy is to recognize all transfers at the beginning of the reporting period. (d) For the three months ended September 30, 2017 and 2016 , unrealized gains of approximately $219 million and $194 million , respectively, are reflected in the condensed consolidated statements of income in operating revenues and the balance is reflected in interest expense. Nine Months Ended September 30, 2017 2016 NEE FPL NEE FPL (millions) Fair value of net derivatives based on significant unobservable inputs at December 31 of prior period $ 578 $ 1 $ 538 $ — Realized and unrealized gains (losses): Included in earnings (a) 518 — 373 — Included in other comprehensive income (b) (16 ) — (3 ) — Included in regulatory assets and liabilities (2 ) (2 ) — — Purchases 83 — 203 — Settlements (234 ) — (300 ) — Issuances (162 ) — (159 ) — Transfers in (c) 14 — 4 — Transfers out (c) 1 — 6 — Fair value of net derivatives based on significant unobservable inputs at September 30 $ 780 $ (1 ) $ 662 $ — The amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to derivatives still held at the reporting date (d) $ 461 $ — $ 231 $ — ——————————————— (a) For the nine months ended September 30, 2017 and 2016 , realized and unrealized gains of approximately $519 million and $443 million , respectively, are reflected in the condensed consolidated statements of income in operating revenues and the balance is primarily reflected in interest expense. (b) Reflected in net unrealized gains on foreign currency translation on the condensed consolidated statements of comprehensive income. (c) Transfers into Level 3 were a result of decreased observability of market data and transfers from Level 3 to Level 2 were a result of increased observability of market data. NEE's and FPL's policy is to recognize all transfers at the beginning of the reporting period. (d) For the nine months ended September 30, 2017 and 2016 , unrealized gains of approximately $462 million and $302 million , respectively, are reflected in the condensed consolidated statements of income in operating revenues and the balance is reflected in interest expense.
Fair Value, by Balance Sheet Grouping	Fair Value of Financial Instruments Recorded at Other than Fair Value - The carrying amounts of commercial paper and other short-term debt approximate their fair values. The carrying amounts and estimated fair values of other financial instruments recorded at other than fair value are as follows: September 30, 2017 December 31, 2016 Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value (millions) NEE: Special use funds (a) $ 716 $ 716 $ 712 $ 712 Other investments - primarily notes receivable (b) $ 512 $ 695 $ 526 $ 668 Long-term debt, including current maturities $ 32,625 $ 34,846 (c) $ 30,418 (d) $ 31,623 (c)(d) FPL: Special use funds (a) $ 561 $ 561 $ 557 $ 557 Long-term debt, including current maturities $ 10,518 $ 11,941 (c) $ 10,072 $ 11,211 (c) ——————————————— (a) Primarily represents investments accounted for under the equity method and loans not measured at fair value on a recurring basis. (b) Primarily a note receivable which bears interest at a fixed rate and matures in 2029. At September 30, 2017, the note receivable is classified as held for sale and is under contract, along with debt secured by this note receivable (see Note 6 - NEER). Fair values are estimated using an income approach utilizing a discounted cash flow valuation technique based on certain observable yield curves and indices considering the credit profile of the borrower (Level 3). (c) As of September 30, 2017 and December 31, 2016 , for NEE, approximately $33,106 million and $29,804 million , respectively, is estimated using a market approach based on quoted market prices for the same or similar issues (Level 2); the balance is estimated using an income approach utilizing a discounted cash flow valuation technique, considering the current credit profile of the debtor (Level 3). For FPL, primarily estimated using quoted market prices for the same or similar issues (Level 2). (d) Excludes debt totaling $373 million reflected in liabilities associated with assets held for sale on NEE's condensed consolidated balance sheet for which the carrying amount approximates fair value. See Note 9 - Assets and Liabilities Associated with Assets Held for Sale.
Available-for-sale Securities	Realized gains and losses and proceeds from the sale or maturity of available for sale securities are as follows: NEE FPL NEE FPL Three Months Ended Three Months Ended Nine Months Ended Nine Months Ended 2017 2016 2017 2016 2017 2016 2017 2016 (millions) Realized gains $ 29 $ 28 $ 9 $ 15 $ 106 $ 83 $ 35 $ 42 Realized losses $ 15 $ 15 $ 8 $ 8 $ 58 $ 53 $ 34 $ 30 Proceeds from sale or maturity of securities $ 518 $ 902 $ 329 $ 661 $ 1,772 $ 2,330 $ 1,166 $ 1,741 The unrealized gains on available for sale securities are as follows: NEE FPL September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 (millions) Equity securities $ 1,690 $ 1,396 $ 1,188 $ 1,007 Debt securities $ 40 $ 22 $ 31 $ 17 The unrealized losses on available for sale debt securities and the fair value of available for sale debt securities in an unrealized loss position are as follows: NEE FPL September 30, 2017 December 31, 2016 September 30, 2017 December 31, 2016 (millions) Unrealized losses (a) $ 11 $ 34 $ 9 $ 28 Fair value $ 737 $ 959 $ 546 $ 722 ——————————————— (a) Unrealized losses on available for sale debt securities in an unrealized loss position for greater than twelve months at September 30, 2017 and December 31, 2016 were not material to NEE or FPL

Equity (Tables)

Equity (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Reconciliation of basic and diluted earnings per share of common stock	Earnings Per Share - The reconciliation of NEE's basic and diluted earnings per share attributable to NEE is as follows: Three Months Ended Nine Months Ended 2017 2016 2017 2016 (millions, except per share amounts) Numerator - net income attributable to NEE $ 847 $ 753 $ 3,223 $ 1,946 Denominator: Weighted-average number of common shares outstanding - basic 469.4 463.3 468.3 461.7 Equity units, stock options, performance share awards, forward sale agreements and restricted stock (a) 4.1 2.7 3.7 3.0 Weighted-average number of common shares outstanding - assuming dilution 473.5 466.0 472.0 464.7 Earnings per share attributable to NEE: Basic $ 1.80 $ 1.63 $ 6.88 $ 4.21 Assuming dilution $ 1.79 $ 1.62 $ 6.83 $ 4.19 ——————————————— (a) Calculated using the treasury stock method. Performance share awards are included in diluted weighted-average number of common shares outstanding based upon what would be issued if the end of the reporting period was the end of the term of the award.
Schedule of Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) - The components of AOCI, net of tax, are as follows: Accumulated Other Comprehensive Income (Loss) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available for Sale Securities Defined Benefit Pension and Other Benefits Plans Net Unrealized Gains (Losses) on Foreign Currency Translation Other Comprehensive Income (Loss) Related to Equity Method Investee Total (millions) Three Months Ended September 30, 2017 Balances, June 30, 2017 $ (96 ) $ 268 $ (76 ) $ (71 ) $ (22 ) $ 3 Other comprehensive income before reclassifications — 31 — 10 1 42 Amounts reclassified from AOCI 10 (a) (6 ) (b) (1 ) — — 3 Net other comprehensive income (loss) 10 25 (1 ) 10 1 45 Less other comprehensive income attributable to noncontrolling interests (1 ) — — 1 — — Balances, September 30, 2017 $ (85 ) $ 293 $ (77 ) $ (62 ) $ (21 ) $ 48 ——————————————— (a) Reclassified to interest expense in NEE's condensed consolidated statements of income. See Note 2 - Income Statement Impact of Derivative Instruments. (b) Reclassified to gains on disposal of investments and other property - net in NEE's condensed consolidated statements of income. Accumulated Other Comprehensive Income (Loss) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available for Sale Securities Defined Benefit Pension and Other Benefits Plans Net Unrealized Gains (Losses) on Foreign Currency Translation Other Comprehensive Income (Loss) Related to Equity Method Investee Total (millions) Three Months Ended September 30, 2016 Balances, June 30, 2016 $ (134 ) $ 193 $ (69 ) $ (44 ) $ (28 ) $ (82 ) Other comprehensive income (loss) before reclassifications — 31 — (9 ) 3 25 Amounts reclassified from AOCI 17 (a) (2 ) (b) — — — 15 Net other comprehensive income (loss) 17 29 — (9 ) 3 40 Less other comprehensive loss attributable to noncontrolling interests — — — (6 ) — (6 ) Balances, September 30, 2016 $ (117 ) $ 222 $ (69 ) $ (47 ) $ (25 ) $ (36 ) ——————————————— (a) Reclassified to interest expense in NEE's condensed consolidated statements of income. See Note 2 - Income Statement Impact of Derivative Instruments. (b) Reclassified to gains on disposal of investments and other property - net in NEE's condensed consolidated statements of income. Accumulated Other Comprehensive Income (Loss) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available for Sale Securities Defined Benefit Pension and Other Benefits Plans Net Unrealized Gains (Losses) on Foreign Currency Translation Other Comprehensive Income (Loss) Related to Equity Method Investee Total (millions) Nine Months Ended September 30, 2017 Balances, December 31, 2016 $ (100 ) $ 225 $ (83 ) $ (90 ) $ (22 ) $ (70 ) Other comprehensive income before reclassifications — 91 7 30 1 129 Amounts reclassified from AOCI 24 (a) (23 ) (b) (1 ) — — — Net other comprehensive income 24 68 6 30 1 129 Less other comprehensive income attributable to noncontrolling interests 9 — — 2 — 11 Balances, September 30, 2017 $ (85 ) $ 293 $ (77 ) $ (62 ) $ (21 ) $ 48 ——————————————— (a) Reclassified to interest expense in NEE's condensed consolidated statements of income. See Note 2 - Income Statement Impact of Derivative Instruments. (b) Reclassified to gains on disposal of investments and other property - net in NEE's condensed consolidated statements of income. Accumulated Other Comprehensive Income (Loss) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Available for Sale Securities Defined Benefit Pension and Other Benefits Plans Net Unrealized Gains (Losses) on Foreign Currency Translation Other Comprehensive Income (Loss) Related to Equity Method Investee Total (millions) Nine Months Ended September 30, 2016 Balances, December 31, 2015 $ (170 ) $ 174 $ (62 ) $ (85 ) $ (24 ) $ (167 ) Other comprehensive income (loss) before reclassifications — 56 (7 ) 19 (1 ) 67 Amounts reclassified from AOCI 53 (a) (8 ) (b) — — — 45 Net other comprehensive income (loss) 53 48 (7 ) 19 (1 ) 112 Less other comprehensive loss attributable to noncontrolling interests — — — (19 ) — (19 ) Balances, September 30, 2016 $ (117 ) $ 222 $ (69 ) $ (47 ) $ (25 ) $ (36 ) ——————————————— (a) Reclassified to interest expense in NEE's condensed consolidated statements of income. See Note 2 - Income Statement Impact of Derivative Instruments. (b) Reclassified to gains on disposal of investments and other property - net in NEE's condensed consolidated statements of income.

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Long-term debt issuances and borrowings	Significant long-term debt issuances and borrowings by subsidiaries of NEE during the nine months ended September 30, 2017 were as follows: Principal Amount Interest Rate Maturity Date (millions) FPL: Other long-term debt $ 200 Variable (a) 2018 NEECH: Debentures $ 1,250 3.55 % 2027 Japanese yen denominated term loan $ 535 Variable (a) 2020 Junior subordinated debentures $ 755 5.11 % 2057 NEER: Senior secured limited-recourse term loans $ 308 Variable (a) 2026 Senior unsecured NEP convertible notes $ 300 1.50 % (b) 2020 Senior unsecured notes $ 1,100 4.25% - 4.50% 2024 - 2027 Senior secured limited-recourse notes $ 200 3.50 % 2037 Other long-term debt $ 480 Variable (a) 2018 - 2019 ——————————————— (a) Variable rate is based on an underlying index plus a margin. Interest rate swap agreements have been entered into with respect to certain of these issuances and a foreign currency swap has been entered into with respect to the Japanese yen denominated term loan. See Note 2. (b) A holder may convert all or a portion of its notes into NEP common units and cash in lieu of any fractional common unit at the conversion rate. At September 30, 2017, the conversion rate, subject to certain adjustments, is 18.9170 NEP common units per $1,000 principal amount of the convertible notes.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies [Abstract]
Schedule of Planned Capital Expenditures	At September 30, 2017 , estimated capital expenditures for the remainder of 2017 through 2021 for which applicable internal approvals (and also, if required, FPSC approvals for FPL or regulatory approvals for acquisitions) have been received were as follows: Remainder of 2017 2018 2019 2020 2021 Total (millions) FPL: Generation: (a) New (b) $ 350 $ 625 $ 550 $ 1,310 $ 950 $ 3,785 Existing 380 845 675 615 475 2,990 Transmission and distribution 590 2,725 2,530 2,465 2,680 10,990 Nuclear fuel 20 170 150 135 145 620 General and other 190 280 250 220 250 1,190 Total $ 1,530 $ 4,645 $ 4,155 $ 4,745 $ 4,500 $ 19,575 NEER: Wind (c) $ 350 $ 1,925 $ 1,175 $ 45 $ 20 $ 3,515 Solar (d) 115 40 5 — — 160 Nuclear, including nuclear fuel 85 265 225 205 195 975 Natural gas pipelines (e) 105 915 40 20 10 1,090 Other 50 60 70 60 55 295 Total $ 705 $ 3,205 $ 1,515 $ 330 $ 280 $ 6,035 Corporate and Other $ 20 $ 60 $ 85 $ 55 $ 40 $ 260 ——————————————— (a) Includes AFUDC of approximately $ 30 million , $ 85 million , $ 49 million , $ 56 million and $ 35 million for the remainder of 2017 through 2021, respectively. (b) Includes land, generation structures, transmission interconnection and integration and licensing. (c) Consists of capital expenditures for new wind projects, repowering of existing wind projects and related transmission totaling approximately 4,075 MW. (d) Includes capital expenditures for new solar projects and related transmission totaling approximately 175 MW. (e) Includes equity contributions associated with an equity investment in a joint venture that is constructing a natural gas pipeline. The natural gas pipeline is pending FERC approval to proceed with construction.
Required capacity and/or minimum payments under contracts	The required capacity and/or minimum payments under contracts, including those discussed above, as of September 30, 2017 were estimated as follows: Remainder of 2017 2018 2019 2020 2021 Thereafter (millions) FPL: Capacity charges (a) $ 20 $ 65 $ 50 $ 20 $ 20 $ 250 Minimum charges, at projected prices: (b) Natural gas, including transportation and storage (c) $ 480 $ 1,305 $ 865 $ 910 $ 905 $ 12,135 Coal, including transportation $ 35 $ 35 $ 5 $ — $ — $ — NEER $ 570 $ 1,455 $ 135 $ 105 $ 80 $ 390 Corporate and Other (d)(e) $ 55 $ 45 $ 15 $ 15 $ 10 $ — ——————————————— (a) Capacity charges, substantially all of which are recoverable through the capacity clause, totaled approximately $ 18 million and $ 41 million for the three months ended September 30, 2017 and 2016 , respectively, and approximately $ 58 million and $ 134 million for the nine months ended September 30, 2017 and 2016 , respectively. Energy charges, which are recoverable through the fuel clause, totaled approximately $ 28 million and $ 57 million for the three months ended September 30, 2017 and 2016 , respectively, and approximately $ 70 million and $ 103 million for the nine months ended September 30, 2017 and 2016 , respectively. (b) Recoverable through the fuel clause. (c) Includes approximately $75 million , $295 million , $290 million , $360 million , $390 million and $7,565 million for the remainder of 2017 through 2021 and thereafter, respectively, of firm commitments related to the natural gas transportation agreements with Sabal Trail and Florida Southeast Connection. (d) Includes an approximately $90 million commitment to invest in clean power and technology businesses through 2021. (e) Excludes approximately $170 million for the remainder of 2017 of joint obligations of NEECH and NEER which are included in the NEER amounts above.

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment information	NEE's segment information is as follows: Three Months Ended September 30, 2017 2016 FPL NEER (a) Corporate and Other NEE Consoli- dated FPL NEER (a) Corporate and Other NEE Consoli- dated (millions) Operating revenues $ 3,477 $ 1,333 $ (2 ) $ 4,808 $ 3,283 $ 1,430 $ 92 $ 4,805 Operating expenses (income) - net $ 2,455 $ 964 $ (10 ) $ 3,409 $ 2,362 $ 974 $ 190 $ 3,526 Net income (loss) attributable to NEE $ 566 $ 292 (b) $ (11 ) $ 847 $ 515 $ 307 (b) $ (69 ) $ 753 Nine Months Ended September 30, 2017 2016 FPL NEER (a) Corporate and Other NEE Consoli- dated FPL NEER (a) Corporate NEE Consoli- dated (millions) Operating revenues $ 9,095 $ 4,052 $ 38 $ 13,185 $ 8,337 $ 3,841 $ 279 $ 12,457 Operating expenses (income) - net $ 6,322 $ 2,852 $ (1,079 ) $ 8,095 $ 5,874 $ 2,575 $ 326 $ 8,775 Net income (loss) attributable to NEE $ 1,537 $ 1,069 (b) $ 617 $ 3,223 $ 1,356 $ 765 (b) $ (175 ) $ 1,946 ——————————————— (a) Interest expense allocated from NEECH is based on a deemed capital structure of 70% debt. For this purpose, the deferred credit associated with differential membership interests sold by NEER subsidiaries is included with debt. Residual NEECH corporate interest expense is included in Corporate and Other. (b) See Note 4 for a discussion of NEER's tax benefits related to PTCs. September 30, 2017 December 31, 2016 FPL NEER Corporate and Other NEE Consoli- dated FPL NEER Corporate and Other NEE Consoli- dated (millions) Total assets $ 49,915 $ 44,991 $ 1,875 $ 96,781 $ 45,501 $ 41,743 $ 2,749 $ 89,993

Summarized Financial Informat29

Summarized Financial Information of Capital Holdings (Tables)	9 Months Ended
	Sep. 30, 2017
Summarized Financial Information [Abstract]
Condensed Consolidating Statements of Income	Condensed Consolidating Statements of Income Three Months Ended September 30, 2017 2016 NEE (Guarantor) NEECH Other (a) NEE Consoli- dated NEE (Guarantor) NEECH Other (a) NEE Consoli- dated (millions) Operating revenues $ — $ 1,365 $ 3,443 $ 4,808 $ — $ 1,526 $ 3,279 $ 4,805 Operating expenses - net (3 ) (982 ) (2,424 ) (3,409 ) (5 ) (1,032 ) (2,489 ) (3,526 ) Interest expense (1 ) (259 ) (121 ) (381 ) — (255 ) (114 ) (369 ) Equity in earnings of subsidiaries 830 — (830 ) — 765 — (765 ) — Other income - net — 181 21 202 4 276 17 297 Income (loss) before income taxes 826 305 89 1,220 764 515 (72 ) 1,207 Income tax expense (benefit) (21 ) 30 355 364 11 141 266 418 Net income (loss) 847 275 (266 ) 856 753 374 (338 ) 789 Less net income attributable to noncontrolling interests — 9 — 9 — 36 — 36 Net income (loss) attributable to NEE $ 847 $ 266 $ (266 ) $ 847 $ 753 $ 338 $ (338 ) $ 753 Nine Months Ended September 30, 2017 2016 NEE (Guarantor) NEECH Other (a) NEE Consoli- dated NEE (Guarantor) NEECH Other (a) NEE Consoli- dated (millions) Operating revenues $ — $ 4,154 $ 9,031 $ 13,185 $ — $ 4,131 $ 8,326 $ 12,457 Operating expenses - net (13 ) (1,806 ) (6,276 ) (8,095 ) (14 ) (2,756 ) (6,005 ) (8,775 ) Interest expense (2 ) (809 ) (360 ) (1,171 ) (1 ) (1,137 ) (342 ) (1,480 ) Equity in earnings of subsidiaries 3,179 — (3,179 ) — 1,989 — (1,989 ) — Other income - net 1 630 31 662 5 603 57 665 Income (loss) before income taxes 3,165 2,169 (753 ) 4,581 1,979 841 47 2,867 Income tax expense (benefit) (58 ) 468 919 1,329 33 71 775 879 Net income (loss) 3,223 1,701 (1,672 ) 3,252 1,946 770 (728 ) 1,988 Less net income attributable to noncontrolling interests — 29 — 29 — 42 — 42 Net income (loss) attributable to NEE $ 3,223 $ 1,672 $ (1,672 ) $ 3,223 $ 1,946 $ 728 $ (728 ) $ 1,946 ——————————————— (a) Represents primarily FPL and consolidating adjustments.
Condensed Consolidating Statements of Comprehensive Income	Condensed Consolidating Statements of Comprehensive Income Three Months Ended September 30, 2017 2016 NEE (Guarantor) NEECH Other (a) NEE Consoli- dated NEE (Guarantor) NEECH Other (a) NEE Consoli- dated (millions) Comprehensive income (loss) attributable to NEE $ 892 $ 312 $ (312 ) $ 892 $ 799 $ 384 $ (384 ) $ 799 Nine Months Ended September 30, 2017 2016 NEE (Guarantor) NEECH Other (a) NEE Consoli- dated NEE (Guarantor) NEECH Other (a) NEE Consoli- dated (millions) Comprehensive income (loss) attributable to NEE $ 3,341 $ 1,784 $ (1,784 ) $ 3,341 $ 2,078 $ 866 $ (866 ) $ 2,078 ——————————————— (a) Represents primarily FPL and consolidating adjustments.
Condensed Consolidating Balance Sheets	Condensed Consolidating Balance Sheets September 30, 2017 December 31, 2016 NEE (Guaran- tor) NEECH Other (a) NEE Consoli- dated NEE (Guaran- tor) NEECH Other (a) NEE Consoli- dated (millions) PROPERTY, PLANT AND EQUIPMENT Electric plant in service and other property $ 23 $ 41,530 $ 50,995 $ 92,548 $ 28 $ 38,671 $ 48,314 $ 87,013 Accumulated depreciation and amortization (16 ) (8,714 ) (12,730 ) (21,460 ) (18 ) (7,778 ) (12,305 ) (20,101 ) Total property, plant and equipment - net 7 32,816 38,265 71,088 10 30,893 36,009 66,912 CURRENT ASSETS Cash and cash equivalents 1 1,370 10 1,381 1 1,258 33 1,292 Receivables 340 1,441 969 2,750 88 1,615 736 2,439 Other 4 1,257 1,635 2,896 2 1,877 1,799 3,678 Total current assets 345 4,068 2,614 7,027 91 4,750 2,568 7,409 OTHER ASSETS Investment in subsidiaries 26,139 — (26,139 ) — 24,323 — (24,323 ) — Other 821 10,152 7,693 18,666 867 8,992 5,813 15,672 Total other assets 26,960 10,152 (18,446 ) 18,666 25,190 8,992 (18,510 ) 15,672 TOTAL ASSETS $ 27,312 $ 47,036 $ 22,433 $ 96,781 $ 25,291 $ 44,635 $ 20,067 $ 89,993 CAPITALIZATION Common shareholders' equity $ 26,398 $ 8,732 $ (8,732 ) $ 26,398 $ 24,341 $ 7,699 $ (7,699 ) $ 24,341 Noncontrolling interests — 923 — 923 — 990 — 990 Long-term debt — 20,290 10,055 30,345 — 18,112 9,706 27,818 Total capitalization 26,398 29,945 1,323 57,666 24,341 26,801 2,007 53,149 CURRENT LIABILITIES Debt due within one year — 2,821 1,793 4,614 — 2,237 785 3,022 Accounts payable 1 1,559 696 2,256 1 2,668 778 3,447 Other 286 1,885 2,563 4,734 231 2,624 1,595 4,450 Total current liabilities 287 6,265 5,052 11,604 232 7,529 3,158 10,919 OTHER LIABILITIES AND DEFERRED CREDITS Asset retirement obligations — 880 2,002 2,882 — 816 1,920 2,736 Deferred income taxes 37 3,439 9,087 12,563 82 3,002 8,017 11,101 Other 590 6,507 4,969 12,066 636 6,487 4,965 12,088 Total other liabilities and deferred credits 627 10,826 16,058 27,511 718 10,305 14,902 25,925 COMMITMENTS AND CONTINGENCIES TOTAL CAPITALIZATION AND LIABILITIES $ 27,312 $ 47,036 $ 22,433 $ 96,781 $ 25,291 $ 44,635 $ 20,067 $ 89,993 ——————————————— (a) Represents primarily FPL and consolidating adjustments.
Condensed Consolidating Statements of Cash Flows	Condensed Consolidating Statements of Cash Flows Nine Months Ended September 30, 2017 2016 NEE (Guaran- tor) NEECH Other (a) NEE Consoli- dated NEE (Guaran- tor) NEECH Other (a) NEE Consoli- dated (millions) NET CASH PROVIDED BY OPERATING ACTIVITIES $ 1,464 $ 1,793 $ 1,903 $ 5,160 $ 1,164 $ 1,781 $ 2,349 $ 5,294 CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures, independent power and other investments and nuclear fuel purchases — (4,808 ) (3,779 ) (8,587 ) (1 ) (4,831 ) (3,097 ) (7,929 ) Proceeds from sale of the fiber-optic telecommunications business — 1,482 — 1,482 — — — — Capital contributions from NEE (46 ) — 46 — (432 ) — 432 — Sale of independent power and other investments of NEER — 159 — 159 — 395 — 395 Proceeds from sale or maturity of securities in special use funds and other investments — 819 1,240 2,059 — 860 1,775 2,635 Purchases of securities in special use funds and other investments — (827 ) (1,319 ) (2,146 ) — (874 ) (1,837 ) (2,711 ) Proceeds from sales of noncontrolling interests in NEP — — — — — 645 — 645 Other - net 7 163 28 198 — (49 ) 31 (18 ) Net cash used in investing activities (39 ) (3,012 ) (3,784 ) (6,835 ) (433 ) (3,854 ) (2,696 ) (6,983 ) CASH FLOWS FROM FINANCING ACTIVITIES Issuances of long-term debt — 4,995 201 5,196 — 4,494 150 4,644 Retirements of long-term debt — (3,819 ) (73 ) (3,892 ) — (2,392 ) (262 ) (2,654 ) Proceeds from differential membership investors — 340 — 340 — 328 — 328 Net change in commercial paper — 995 811 1,806 — (154 ) 408 254 Proceeds from other short-term debt — — 200 200 — — 500 500 Repayments of other short-term debt — — (2 ) (2 ) — (212 ) (150 ) (362 ) Issuances of common stock - net 36 — — 36 528 — — 528 Dividends on common stock (1,382 ) — — (1,382 ) (1,205 ) — — (1,205 ) Contributions from (dividends to) NEE — (722 ) 722 — — 294 (294 ) — Other - net (79 ) (458 ) (1 ) (538 ) (54 ) (197 ) 17 (234 ) Net cash provided by (used in) financing activities (1,425 ) 1,331 1,858 1,764 (731 ) 2,161 369 1,799 Net increase (decrease) in cash and cash equivalents — 112 (23 ) 89 — 88 22 110 Cash and cash equivalents at beginning of period 1 1,258 33 1,292 — 546 25 571 Cash and cash equivalents at end of period $ 1 $ 1,370 $ 10 $ 1,381 $ — $ 634 $ 47 $ 681 ——————————————— (a) Represents primarily FPL and consolidating adjustments.

Employee Retirement Benefits (D

Employee Retirement Benefits (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Pension Benefits [Member]
Net periodic benefit (income) cost [Abstract]
Service cost	$ 16	$ 16	$ 49	$ 47
Interest cost	21	26	63	78
Expected return on plan assets	(67)	(65)	(202)	(195)
Amortization of prior service cost (benefit)	0	0	(1)	1
Special termination benefits	0	0	38	0
Postretirement benefits settlement	0	0	0	0
Net periodic benefit (income) cost	(30)	(23)	(53)	(69)
Postretirement Benefits [Member]
Net periodic benefit (income) cost [Abstract]
Service cost	0	0	1	1
Interest cost	2	3	6	10
Expected return on plan assets	0	0	0	0
Amortization of prior service cost (benefit)	(4)	0	(6)	(2)
Special termination benefits	0	0	0	0
Postretirement benefits settlement	0	0	1	0
Net periodic benefit (income) cost	(2)	3	2	9
FPL [Member] | Pension Benefits [Member]
Net periodic benefit (income) cost [Abstract]
Net periodic benefit (income) cost	(20)	(15)	(32)	(44)
FPL [Member] | Postretirement Benefits [Member]
Net periodic benefit (income) cost [Abstract]
Net periodic benefit (income) cost	$ (2)	$ 2	$ 1	$ 7

Derivative Instruments (Details

Derivative Instruments (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Total loss to be reclassified during next 12 months	$ 27
Margin cash collateral received from counterparties that was not offset against derivative assets	13		$ 5
Margin cash collateral provided to counterparties that was not offset against derivative assets or liabilities	177		$ 129
Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Expense [Member]
Derivatives, Fair Value [Line Items]
Reclassification out of AOCI into interest expense, before tax	2	$ 17
Reclassification out of AOCI into interest expense, net of tax	$ 1	$ 10

Derivative Instruments (Balance

Derivative Instruments (Balance Sheet Disclosure) (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Derivative Asset	$ 1,988	$ 2,235
Derivative Liability	771	881
Current derivative assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	442	885
Derivative Asset, Collateral, Obligation to Return Cash, Offset	74	96
Non Current Derivative Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	1,546	1,350
Derivative Asset, Collateral, Obligation to Return Cash, Offset	12	71
Current derivative liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability	257	404
Noncurrent derivative liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability	514	477
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	33
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	4,157	4,879
Derivative Liability, Fair Value, Gross Liability	2,887	3,358
Derivative Asset	1,988	2,235
Derivative Liability	771	881
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	4,081	4,590
Derivative Liability, Fair Value, Gross Liability	2,546	2,968
Derivative Asset	1,885	1,938
Derivative Liability	403	483
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	76	288
Derivative Liability, Fair Value, Gross Liability	299	284
Derivative Asset	92	296
Derivative Liability	315	292
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	1
Derivative Liability, Fair Value, Gross Liability	42	106
Derivative Asset	11	1
Derivative Liability	53	106
FPL [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	7	209
Derivative Liability	3	1
FPL [Member] | Current derivative assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	7	209
FPL [Member] | Current derivative liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability	3	1
FPL [Member] | Commodity Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	11	212
Derivative Liability, Fair Value, Gross Liability	7	4
Derivative Asset	7	209
Derivative Liability	$ 3	$ 1

Derivative Instruments (Income

Derivative Instruments (Income Statement Disclosure) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Not Designated as Hedging Instrument [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 53	$ 202	$ 238	$ 0
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Gains (losses) included in operating revenues [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	114	264	538	502
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Gains (losses) included in fuel, purchased power and interchange [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	0	1	0	(1)
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Gain Loss Included In Interest Expense Member
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(41)	(58)	(232)	(515)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Gain Loss Included In Interest Expense Member
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(4)	15	53	96
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Gains (Losses) Included In Other - Net [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(2)	1	(5)	(2)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Gain Loss Included In Interest Expense Member
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Interest Expense	(13)	(18)	(36)	(71)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Gain Loss Included In Interest Expense Member
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Interest Expense	(1)	(3)	(80)	(9)
FPL [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract]
Gains (losses) on commodity contracts, recorded as regulatory assets and or liabilities on the balance sheet due to regulatory treatment	$ (12)	$ (35)	$ (164)	$ 35

Derivative Instruments (Net Not

Derivative Instruments (Net Notional Volumes and Additional Disclosures) (Details) bbl in Millions, MWh in Millions, MMBTU in Millions, $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2017USD ($)MWhMMBTUbbl	Dec. 31, 2016USD ($)MWhMMBTUbbl
Currency Swap [Member]
Derivative [Line Items]
Notional amount | $	$ 714	$ 705
Interest Rate Contract [Member]
Derivative [Line Items]
Notional amount | $	$ 13,600	$ 15,100
Short [Member] | Commodity contract - Power [Member]
Derivative [Line Items]
Non-monetary net notional amount (in MWh) | MWh	(107)	(84)
Short [Member] | Commodity contract - Oil [Member]
Derivative [Line Items]
Non-monetary net notional amount (in barrels) | bbl	(3)	(7)
Long [Member] | Commodity contract - Natural gas [Member]
Derivative [Line Items]
Non-monetary net notional amount (in MMBtu) | MMBTU	312	1,002
FPL [Member] | Short [Member] | Commodity contract - Power [Member]
Derivative [Line Items]
Non-monetary net notional amount (in MWh) | MWh	0	0
FPL [Member] | Short [Member] | Commodity contract - Oil [Member]
Derivative [Line Items]
Non-monetary net notional amount (in barrels) | bbl	0	0
FPL [Member] | Long [Member] | Commodity contract - Natural gas [Member]
Derivative [Line Items]
Non-monetary net notional amount (in MMBtu) | MMBTU	255	618

Derivative Instruments (Credit-

Derivative Instruments (Credit-Risk-Related Contingent Features) (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Fair value of derivative instruments with credit-risk-related contingent features that were in a liability position	$ 1,100	$ 1,300
Total required posted collateral should FPL's and Capital Holdings' credit ratings fall to BBB/Baa2	130	110
Total required posted collateral should FLP's and Capital Holdings' credit ratings fall below investment grade	1,100	990
Additional collateral requirements if non-ratings based contract provisions are triggered	220	225
Letters of credit posted through the normal course of business that could be applied toward the collateral requirements related to derivative instruments with credit-risk-related contingent features	26	30
Collateral Already Posted, Aggregate Fair Value	2	1
FPL [Member]
Derivative [Line Items]
Fair value of derivative instruments with credit-risk-related contingent features that were in a liability position	7	5
Total required posted collateral should FPL's and Capital Holdings' credit ratings fall to BBB/Baa2	0	0
Total required posted collateral should FLP's and Capital Holdings' credit ratings fall below investment grade	0	0
Additional collateral requirements if non-ratings based contract provisions are triggered	140	115
Letters of credit posted through the normal course of business that could be applied toward the collateral requirements related to derivative instruments with credit-risk-related contingent features	0	0
Collateral Already Posted, Aggregate Fair Value	$ 0	$ 0

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities Measured on a Recurring Basis) (Details) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Dec. 31, 2015pipelinecontract	Dec. 31, 2016USD ($)
Derivatives:
Derivative assets	$ 1,988		$ 1,988			$ 2,235
Derivatives:
Derivative liability	771		771			881
Number of long-term contracted natural gas pipeline assets acquired | pipeline					7
Threshold for payment of contingent holdback, number of executed contracts | contract					1
Revaluation of contingent consideration	0	$ (101)	0	$ (118)
Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	999		999			982
Special use funds:
Equity securities	3,285		3,285			2,913
U.S. Government and municipal bonds	542		542			466
Corporate debt securities	773		773			764
Mortgage-backed securities	452		452			498
Other debt securities	126		126			81
Other investments:
Equity Securities	35		35			35
Debt securities	141		141			161
Fair value measurements made on a recurring basis [Member] | Commodity Contract [Member]
Derivatives:
Derivative asset, netting	(2,196)		(2,196)			(2,652)
Derivative assets	1,885		1,885			1,938
Derivatives:
Derivative liability, netting	(2,143)		(2,143)			(2,485)
Derivative liability	403		403			483
Fair value measurements made on a recurring basis [Member] | Interest Rate Contract [Member]
Derivatives:
Derivative asset, netting	16		16			8
Derivative assets	92		92			296
Derivatives:
Derivative liability, netting	16		16			8
Derivative liability	315		315			292
Fair value measurements made on a recurring basis [Member] | Foreign Currency Swap [Member]
Derivatives:
Derivative asset, netting	11		11			0
Derivative assets	11		11			1
Derivatives:
Derivative liability, netting	11		11			0
Derivative liability	53		53			106
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	999		999			982
Special use funds:
Equity securities	1,590		1,590			1,410
U.S. Government and municipal bonds	404		404			296
Corporate debt securities	1		1			1
Mortgage-backed securities	0		0			0
Other debt securities	0		0			0
Other investments:
Equity Securities	25		25			26
Debt securities	32		32			8
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] | Fair value measurements made on a recurring basis [Member] | Commodity Contract [Member]
Derivatives:
Derivative asset before netting	1,168		1,168			1,563
Derivatives:
Derivative liability before netting	1,144		1,144			1,476
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] | Fair value measurements made on a recurring basis [Member] | Interest Rate Contract [Member]
Derivatives:
Derivative asset before netting	0		0			0
Derivatives:
Derivative liability before netting	0		0			0
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] | Fair value measurements made on a recurring basis [Member] | Foreign Currency Swap [Member]
Derivatives:
Derivative asset before netting	0		0			0
Derivatives:
Derivative liability before netting	0		0			0
Significant Other Observable Inputs (Level 2) [Member] | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	0		0			0
Special use funds:
Equity securities	1,695		1,695			1,503
U.S. Government and municipal bonds	138		138			170
Corporate debt securities	772		772			763
Mortgage-backed securities	452		452			498
Other debt securities	126		126			81
Other investments:
Equity Securities	10		10			9
Debt securities	109		109			153
Significant Other Observable Inputs (Level 2) [Member] | Fair value measurements made on a recurring basis [Member] | Commodity Contract [Member]
Derivatives:
Derivative asset before netting	1,503		1,503			1,827
Derivatives:
Derivative liability before netting	900		900			980
Significant Other Observable Inputs (Level 2) [Member] | Fair value measurements made on a recurring basis [Member] | Interest Rate Contract [Member]
Derivatives:
Derivative asset before netting	76		76			285
Derivatives:
Derivative liability before netting	171		171			171
Significant Other Observable Inputs (Level 2) [Member] | Fair value measurements made on a recurring basis [Member] | Foreign Currency Swap [Member]
Derivatives:
Derivative asset before netting	0		0			1
Derivatives:
Derivative liability before netting	42		42			106
Significant Unobservable Inputs (Level 3) [Member] | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	0		0			0
Special use funds:
Equity securities	0		0			0
U.S. Government and municipal bonds	0		0			0
Corporate debt securities	0		0			0
Mortgage-backed securities	0		0			0
Other debt securities	0		0			0
Other investments:
Equity Securities	0		0			0
Debt securities	0		0			0
Significant Unobservable Inputs (Level 3) [Member] | Fair value measurements made on a recurring basis [Member] | Commodity Contract [Member]
Derivatives:
Derivative asset before netting	1,410		1,410			1,200
Derivatives:
Derivative liability before netting	502		502			512
Significant Unobservable Inputs (Level 3) [Member] | Fair value measurements made on a recurring basis [Member] | Interest Rate Contract [Member]
Derivatives:
Derivative asset before netting	0		0			3
Derivatives:
Derivative liability before netting	128		128			113
Significant Unobservable Inputs (Level 3) [Member] | Fair value measurements made on a recurring basis [Member] | Foreign Currency Swap [Member]
Derivatives:
Derivative asset before netting	0		0			0
Derivatives:
Derivative liability before netting	0		0			0
Other Current Assets [Member]
Derivatives:
Restricted cash	137		137			164
FPL [Member]
Derivatives:
Derivative assets	7		7			209
Derivatives:
Derivative liability	3		3			1
FPL [Member] | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	112		112			120
Special use funds:
Equity securities	1,987		1,987			1,745
U.S. Government and municipal bonds	416		416			362
Corporate debt securities	542		542			547
Mortgage-backed securities	343		343			384
Other debt securities	114		114			70
FPL [Member] | Fair value measurements made on a recurring basis [Member] | Commodity Contract [Member]
Derivatives:
Derivative asset, netting	(4)		(4)			(3)
Derivative assets	7		7			209
Derivatives:
Derivative liability, netting	(4)		(4)			(3)
Derivative liability	3		3			1
FPL [Member] | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	112		112			120
Special use funds:
Equity securities	442		442			373
U.S. Government and municipal bonds	301		301			221
Corporate debt securities	0		0			0
Mortgage-backed securities	0		0			0
Other debt securities	0		0			0
FPL [Member] | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member] | Fair value measurements made on a recurring basis [Member] | Commodity Contract [Member]
Derivatives:
Derivative asset before netting	0		0			0
Derivatives:
Derivative liability before netting	0		0			0
FPL [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	0		0			0
Special use funds:
Equity securities	1,545		1,545			1,372
U.S. Government and municipal bonds	115		115			141
Corporate debt securities	542		542			547
Mortgage-backed securities	343		343			384
Other debt securities	114		114			70
FPL [Member] | Significant Other Observable Inputs (Level 2) [Member] | Fair value measurements made on a recurring basis [Member] | Commodity Contract [Member]
Derivatives:
Derivative asset before netting	10		10			208
Derivatives:
Derivative liability before netting	5		5			1
FPL [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fair value measurements made on a recurring basis [Member]
Cash equivalents:
Equity securities	0		0			0
Special use funds:
Equity securities	0		0			0
U.S. Government and municipal bonds	0		0			0
Corporate debt securities	0		0			0
Mortgage-backed securities	0		0			0
Other debt securities	0		0			0
FPL [Member] | Significant Unobservable Inputs (Level 3) [Member] | Fair value measurements made on a recurring basis [Member] | Commodity Contract [Member]
Derivatives:
Derivative asset before netting	1		1			4
Derivatives:
Derivative liability before netting	2		2			3
FPL [Member] | Other Current Assets [Member]
Derivatives:
Restricted cash	$ 99		$ 99			$ 120

Fair Value Measurements (Signif

Fair Value Measurements (Significant Unobservable Inputs Used in Valuation of Contracts) (Details) - Level 3 [Member] $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)$ / MMBTU$ / MWh
Forward Contracts - Power [Member] | Discounted Cash Flow Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Forward price (in dollars per energy unit) | $ / MWh	0
Forward Contracts - Power [Member] | Discounted Cash Flow Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Forward price (in dollars per energy unit) | $ / MWh	87
Forward contracts - Gas [Member] | Discounted Cash Flow Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Forward price (in dollars per energy unit) | $ / MMBTU	1
Forward contracts - Gas [Member] | Discounted Cash Flow Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Forward price (in dollars per energy unit) | $ / MMBTU	6
Option Contracts, Power [Member] | Option Models [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Implied volatilities (percent)	8.00%
Implied correlations (percent)	1.00%
Option Contracts, Power [Member] | Option Models [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Implied volatilities (percent)	227.00%
Implied correlations (percent)	100.00%
Option Contracts, Primarily Gas [Member] | Option Models [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Implied volatilities (percent)	1.00%
Implied correlations (percent)	1.00%
Option Contracts, Primarily Gas [Member] | Option Models [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Implied volatilities (percent)	104.00%
Implied correlations (percent)	100.00%
Full Requirements and Unit Contingent Contracts [Member] | Discounted Cash Flow Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Forward price (in dollars per energy unit) | $ / MWh	(18.53)
Customer migration rate (percent)	0.00%
Full Requirements and Unit Contingent Contracts [Member] | Discounted Cash Flow Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Forward price (in dollars per energy unit) | $ / MWh	205.63
Customer migration rate (percent)	20.00%
Interest Rate Swap [Member] | NextEra Energy Resources [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Liabilities, Fair Value Disclosure	$ 128
Derivative Financial Instruments, Liabilities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Liabilities, Fair Value Disclosure	502
Derivative Financial Instruments, Liabilities [Member] | Forward Contracts - Power [Member] | Discounted Cash Flow Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Liabilities, Fair Value Disclosure	263
Derivative Financial Instruments, Liabilities [Member] | Forward contracts - Gas [Member] | Discounted Cash Flow Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Liabilities, Fair Value Disclosure	14
Derivative Financial Instruments, Liabilities [Member] | Option Contracts, Power [Member] | Option Models [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Liabilities, Fair Value Disclosure	19
Derivative Financial Instruments, Liabilities [Member] | Option Contracts, Primarily Gas [Member] | Option Models [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Liabilities, Fair Value Disclosure	195
Derivative Financial Instruments, Liabilities [Member] | Full Requirements and Unit Contingent Contracts [Member] | Discounted Cash Flow Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Liabilities, Fair Value Disclosure	11
Derivative Financial Instruments, Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	1,410
Derivative Financial Instruments, Assets [Member] | Forward Contracts - Power [Member] | Discounted Cash Flow Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	860
Derivative Financial Instruments, Assets [Member] | Forward contracts - Gas [Member] | Discounted Cash Flow Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	28
Derivative Financial Instruments, Assets [Member] | Option Contracts, Power [Member] | Option Models [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	48
Derivative Financial Instruments, Assets [Member] | Option Contracts, Primarily Gas [Member] | Option Models [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	149
Derivative Financial Instruments, Assets [Member] | Full Requirements and Unit Contingent Contracts [Member] | Discounted Cash Flow Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 325

Fair Value Measurements (Reconc

Fair Value Measurements (Reconciliation of Changes in the Fair Value) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair value based on significant unobservable inputs, beginning balance	$ 724	$ 532	$ 578	$ 538
Realized and unrealized gains (losses): [Abstract]
Included in Earnings	158	153	518	373
Included in other comprehensive income	(5)	0	(16)	(3)
Included in regulatory assets and liabilities			(2)	0
Purchases	38	28	83	203
Settlements	(77)	(72)	(234)	(300)
Issuances	(59)	(16)	(162)	(159)
Transfers in	0	1	14	4
Transfers out	1	36	1	6
Fair value based on significant unobservable inputs, ending balance	780	662	780	662
The amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to derivatives still held at the reporting date	213	150	461	231
Realized and unrealized gains (losses) reflected in operating revenues	164	198	519	443
Unrealized gains (losses) reflected in operating revenues related to derivatives still held at the reporting date	219	194	462	302
FPL [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Fair value based on significant unobservable inputs, beginning balance	(2)	(1)	1	0
Realized and unrealized gains (losses): [Abstract]
Included in Earnings	0	0	0	0
Included in other comprehensive income	0	0	0	0
Included in regulatory assets and liabilities			(2)	0
Purchases	0	0	0	0
Settlements	1	1	0	0
Issuances	0	0	0	0
Transfers in	0	0	0	0
Transfers out	0	0	0	0
Fair value based on significant unobservable inputs, ending balance	(1)	0	(1)	0
The amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to derivatives still held at the reporting date	$ 0	$ 0	$ 0	$ 0

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value of Instruments Recorded at Carrying Amount) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Special use funds: nuclear decommissioning fund assets	$ 5,894	$ 5,434
Available for sale debt securities amortized cost	1,863	1,820
Available For Sale Securities Equity Securities Amortized Cost	$ 1,604	1,543
Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity	8 years
Liabilities associated with assets held-for-sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term Debt		373
Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Special Use Funds Fair Value Disclosure	$ 716	712
Other Investments Financial Instruments Primarily Notes Receivable Fair Value Disclosure	695	668
Long Term Debt Including Current Maturities Fair Value Disclosure	34,846	31,623
Estimated Fair Value [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long Term Debt Including Current Maturities Fair Value Disclosure	33,106	29,804
Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Special Use Funds Fair Value Disclosure	716	712
Other Investments Financial Instruments Primarily Notes Receivable Fair Value Disclosure	512	526
Long Term Debt Including Current Maturities Fair Value Disclosure	32,625	30,418
FPL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Special use funds: nuclear decommissioning fund assets	3,963	3,665
Available for sale debt securities amortized cost	1,392	1,373
Available For Sale Securities Equity Securities Amortized Cost	$ 808	764
Special Use Funds Nuclear Decommissioning Funds Weighted Average Maturity	8 years
FPL [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Special Use Funds Fair Value Disclosure	$ 561	557
Long Term Debt Including Current Maturities Fair Value Disclosure	11,941	11,211
FPL [Member] | Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Special Use Funds Fair Value Disclosure	561	557
Long Term Debt Including Current Maturities Fair Value Disclosure	$ 10,518	$ 10,072

Fair Value Measurements (Availa

Fair Value Measurements (Available for Sale Securities) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Realized Gains	$ 29	$ 28	$ 106	$ 83
Realized Losses	15	15	58	53
Proceeds from Sale and Maturity of Available-for-sale Securities	518	902	1,772	2,330
Unrealized losses on available for sale debt securities			11		$ 34
Fair value of available for sale securities in an unrealized loss position	737		737		959
Available For Sale Securities: Special Use Funds - Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized gains			1,690		1,396
available for sale securities: Special Use Funds - Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized gains			40		22
FPL [Member]
Schedule of Available-for-sale Securities [Line Items]
Realized Gains	9	15	35	42
Realized Losses	8	8	34	30
Proceeds from Sale and Maturity of Available-for-sale Securities	329	$ 661	1,166	$ 1,741
Unrealized losses on available for sale debt securities			9		28
Fair value of available for sale securities in an unrealized loss position	$ 546		546		722
FPL [Member] | Available For Sale Securities: Special Use Funds - Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized gains			1,188		1,007
FPL [Member] | available for sale securities: Special Use Funds - Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Unrealized gains			$ 31		$ 17

Income Taxes (Details)

Income Taxes (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)MW	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)MW
Income Tax Contingency [Line Items]
Effective income tax rate (as a percent)	30.00%	35.00%	29.00%	31.00%
Production tax credits	$ 27	$ 19	$ 85	$ 92
Deferred income tax benefit associated with convertible investment tax credits	$ 51	34	$ 220	$ 115
Production tax credit (PTC), roll off period			10 years
Reorganization Value, Income Tax Benefits Associated with Reorganization of Certain Assets		30
Merchant Natural Gas Generation Facilities [Member] | NextEra Energy Resources subsidiary [Member]
Income Tax Contingency [Line Items]
Income Tax Charge Related to Sale of Asset		$ 58
Renewable Energy Assets, Power Generation Capacity | MW		2,884		2,884

Oncor-Related Transactions (Det

Oncor-Related Transactions (Details) - USD ($) $ in Millions	Sep. 30, 2017	Oct. 31, 2016	Jul. 29, 2016
Energy Future Holdings Corp. [Member]
Business Acquisition [Line Items]
Percentage of interests to be acquired in pending merger			100.00%
Energy Future Holdings Corp., Texas Transmission Holdings Corporation, and Oncor Management Investment LLC [Member] | Oncor Electric Delivery Company LLC [Member]
Business Acquisition [Line Items]
Percentage of interests to be acquired in pending merger		100.00%
Energy Future Holdings Corp. [Member]
Business Acquisition [Line Items]
Termination fee sought			$ 275
Energy Future Holdings Corp. [Member] | Oncor Electric Delivery Company LLC [Member]
Business Acquisition [Line Items]
Percentage of interests to be acquired in pending merger			80.00%
Texas Transmission Holdings Corporation [Member]
Business Acquisition [Line Items]
Possible termination fee amount transaction not approved	$ 72.3

Variable Interest Entities (V43

Variable Interest Entities (VIEs) (Details) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2017USD ($)variable_interest_entityentitiesMW	Dec. 31, 2016USD ($)variable_interest_entity	Dec. 31, 2007USD ($)
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	33
Investment in subsidiaries	$ 0	$ 0
NEP OpCo [Member]
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	1
Carrying amount of assets, consolidated variable interest entity	$ 7,800	7,200
Carrying amount of liabilities, consolidated variable interest entity	5,700	5,000
Other variable interest entities [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities	2,601	2,505
FPL [Member] | Bankruptcy remote special purpose subsidiary [Member]
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	143	216
Carrying amount of liabilities, consolidated variable interest entity	145	214
FPL [Member] | Other variable interest entities [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities	$ 2,133	2,049
NextEra Energy Resources [Member]
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	32
NextEra Energy Resources [Member] | Gas and/or oil variable interest entities [Member]
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	1
Carrying amount of assets, consolidated variable interest entity	$ 83	95
Carrying amount of liabilities, consolidated variable interest entity	$ 28	42
Natural gas and or oil electric generating facility capacity (in megawatts) | MW	110
NextEra Energy Resources [Member] | Photovoltaic Solar Facility [Member]
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	2
Carrying amount of assets, consolidated variable interest entity		571
Carrying amount of liabilities, consolidated variable interest entity		487
Ownership percentage	50.00%
Number of entities with ownership interest contributed | entities	3
Solar generating facility capability (in MW) | MW	277
Wind electric generating facility capability (in megawatts) | MW	374
NextEra Energy Resources [Member] | Wind variable interest entities [Member]
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	27
Carrying amount of assets, consolidated variable interest entity	$ 10,500	10,900
Carrying amount of liabilities, consolidated variable interest entity	$ 5,900	6,900
Wind electric generating facility capability (in megawatts) | MW	6,649
Indirect Subsidiary of NextEra Energy Resources [Member] | Photovoltaic Solar Facility [Member]
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	$ 574
Carrying amount of liabilities, consolidated variable interest entity	481
NEECH [Member] | Special Purpose Entity that has Insufficient Equity at Risk [Member]
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	505	502
Carrying amount of liabilities, consolidated variable interest entity	493	511
Subsidiaries of NEE [Member]
Variable Interest Entity [Line Items]
Additional commitments to invest	$ 90	$ 30
Additional VIEs committed to invest in | variable_interest_entity	3	2
Other Investments [Member]
Variable Interest Entity [Line Items]
Investment in subsidiaries	$ 268	$ 234
Senior Secured Debt [Member] | FPL [Member] | Bankruptcy remote special purpose subsidiary [Member]
Variable Interest Entity [Line Items]
Storm-recovery bonds aggregate principal amount issued			$ 652
Proceeds from issuance of storm-recovery bonds			$ 644
NEP OpCo [Member]
Variable Interest Entity [Line Items]
Ownership percentage	65.10%

Equity (Earnings Per Share) (De

Equity (Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reconciliation of basic and diluted earnings per share of common stock [Abstract]
Net income (loss) attributable to NEE	$ 847	$ 753	$ 3,223	$ 1,946
Denominator:
Weighted-average number of common shares outstanding - basic	469.4	463.3	468.3	461.7
Equity units, stock options, performance share awards, forward sale agreements and restricted stock	4.1	2.7	3.7	3
Weighted-average number of common shares outstanding - assuming dilution	473.5	466	472	464.7
Earnings per share attributable to NEE:
Basic (in dollars per share)	$ 1.80	$ 1.63	$ 6.88	$ 4.21
Assuming dilution (in dollars per share)	$ 1.79	$ 1.62	$ 6.83	$ 4.19
Antidilutive securities (in shares)	1	11.2	4.1	3.9

Equity (Accumulated Other Compr

Equity (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 3	$ (82)	$ (70)	$ (167)
Other comprehensive income before reclassifications	42	25	129	67
Amounts reclassified from AOCI	3	15	0	45
Total other comprehensive income, net of tax	45	40	129	112
Less other comprehensive income attributable to noncontrolling interests	0	(6)	11	(19)
Ending balance	48	(36)	48	(36)
Net Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(96)	(134)	(100)	(170)
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from AOCI	10	17	24	53
Total other comprehensive income, net of tax	10	17	24	53
Less other comprehensive income attributable to noncontrolling interests	(1)	0	9	0
Ending balance	(85)	(117)	(85)	(117)
Net Unrealized Gains (Losses) on Available for Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	268	193	225	174
Other comprehensive income before reclassifications	31	31	91	56
Amounts reclassified from AOCI	(6)	(2)	(23)	(8)
Total other comprehensive income, net of tax	25	29	68	48
Less other comprehensive income attributable to noncontrolling interests	0	0	0	0
Ending balance	293	222	293	222
Defined Benefit Pension and Other Benefits Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(76)	(69)	(83)	(62)
Other comprehensive income before reclassifications	0	0	7	(7)
Amounts reclassified from AOCI	(1)	0	(1)	0
Total other comprehensive income, net of tax	(1)	0	6	(7)
Less other comprehensive income attributable to noncontrolling interests	0	0	0	0
Ending balance	(77)	(69)	(77)	(69)
Net Unrealized Gains (Losses) on Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(71)	(44)	(90)	(85)
Other comprehensive income before reclassifications	10	(9)	30	19
Amounts reclassified from AOCI	0	0	0	0
Total other comprehensive income, net of tax	10	(9)	30	19
Less other comprehensive income attributable to noncontrolling interests	1	(6)	2	(19)
Ending balance	(62)	(47)	(62)	(47)
Other Comprehensive Income (Loss) Related to Equity Method Investee
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(22)	(28)	(22)	(24)
Other comprehensive income before reclassifications	1	3	1	(1)
Amounts reclassified from AOCI	0	0	0	0
Total other comprehensive income, net of tax	1	3	1	(1)
Less other comprehensive income attributable to noncontrolling interests	0	0	0	0
Ending balance	$ (21)	$ (25)	$ (21)	$ (25)

Equity (Narrative) (Details)

Equity (Narrative) (Details) - USD ($)	1 Months Ended	9 Months Ended
	Nov. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Class of Stock [Line Items]
Forward sale agreement, number of shares	12,000,000
Forward sale price (in dollars per share)	$ 124
Common Stock [Member]
Class of Stock [Line Items]
Issuance of common stock (in shares)		2,000,000	5,000,000
Forward Counterparty [Member] | Common Stock [Member]
Class of Stock [Line Items]
Issuance of common stock (in shares)		1,711,345
Series A Preferred Units [Member] | NextEra Energy Partners, LP [Member]
Class of Stock [Line Items]
Preferred unit purchase agreement, amount to be issued and sold		$ 550,000,000

Debt (Details)

Debt (Details)	9 Months Ended
	Sep. 30, 2017USD ($)
FPL [Member] | Other Long Term Debt, Variable [Member]
Debt Instrument [Line Items]
Principal Amount	$ 200,000,000
Interest Rate Terms	Variable
NextEra Energy Capital Holdings, Inc. [Member] | Debentures - Fixed [Member]
Debt Instrument [Line Items]
Principal Amount	$ 1,250,000,000
Interest Rate (as a percent)	3.55%
NextEra Energy Capital Holdings, Inc. [Member] | Japanese Yen Denominated Term Loan [Member]
Debt Instrument [Line Items]
Principal Amount	$ 535,000,000
Interest Rate Terms	Variable
NextEra Energy Capital Holdings, Inc. [Member] | Junior Subordinated Debentures - Fixed [Member]
Debt Instrument [Line Items]
Principal Amount	$ 755,000,000
Interest Rate (as a percent)	5.11%
NEER [Member] | Other Long Term Debt, Variable [Member]
Debt Instrument [Line Items]
Principal Amount	$ 480,000,000
Interest Rate Terms	Variable
NEER [Member] | Senior Secured Limited Recourse Term Loans, Variable [Member]
Debt Instrument [Line Items]
Principal Amount	$ 308,000,000
Interest Rate Terms	Variable
NEER [Member] | Senior Unsecured Convertible Notes [Member]
Debt Instrument [Line Items]
Principal Amount	$ 300,000,000
Interest Rate (as a percent)	1.50%
Convertible debt, conversion rate (in units per $1,000 of par value)	18.9170
NEER [Member] | Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Principal Amount	$ 1,100,000,000
NEER [Member] | Senior Secured Limited-Recourse Notes [Member]
Debt Instrument [Line Items]
Principal Amount	$ 200,000,000
Interest Rate (as a percent)	3.50%
Minimum [Member] | NEER [Member] | Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Interest Rate (as a percent)	4.25%
Maximum [Member] | NEER [Member] | Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Interest Rate (as a percent)	4.50%

Summary of Significant Accoun48

Summary of Significant Accounting and Reporting Policies (Details) $ / shares in Units, $ in Millions		3 Months Ended			9 Months Ended		12 Months Ended
		Dec. 31, 2017$ / MWh	Sep. 30, 2017USD ($)$ / shares	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)$ / shares	Sep. 30, 2016USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2020USD ($)
Subsidiary, Sale of Stock [Line Items]
Net income (loss) attributable to NEE			$ 847	$ 753	$ 3,223	$ 1,946
FPL [Member]
Subsidiary, Sale of Stock [Line Items]
Net income (loss) attributable to NEE	[1]		566	$ 515	1,537	1,356
Storm restoration costs recoverable, estimated costs			1,300		1,300
Merchant Natural Gas Generation Facilities [Member] | NextEra Energy Resources [Member]
Subsidiary, Sale of Stock [Line Items]
Proceeds from sale of ownership interest in merchant natural gas generation facilities						456
Gain on sale of ownership interest in merchant natural gas generation facilities						254
Gain on sale of ownership interest in merchant natural gas facilities after-tax						$ 106
FPL FiberNet [Member] | Indirect Wholly-Owned Subsidiary [Member]
Subsidiary, Sale of Stock [Line Items]
Proceeds from sale of ownership interest in merchant natural gas generation facilities					1,100
Retirement of debt					370
Gain on sale of ownership interest in merchant natural gas generation facilities					1,100
Gain on sale of ownership interest in merchant natural gas facilities after-tax					$ 685
Minimum [Member] | wind, natural gas and solar plants [Member] | NextEra Energy Resources [Member]
Subsidiary, Sale of Stock [Line Items]
Useful life					30 years
Maximum [Member] | wind, natural gas and solar plants [Member] | NextEra Energy Resources [Member]
Subsidiary, Sale of Stock [Line Items]
Useful life					35 years
Service Life [Member]
Subsidiary, Sale of Stock [Line Items]
Net income (loss) attributable to NEE			$ 15		$ 45
Basic and diluted earnings per share (in dollars per share) | $ / shares			$ 0.03		$ 0.09
Scenario, Forecast [Member] | Service Life [Member]
Subsidiary, Sale of Stock [Line Items]
Net income (loss) attributable to NEE							$ 60
Other Current Liabilities [Member] | FPL [Member]
Subsidiary, Sale of Stock [Line Items]
Accrued storm restoration costs			$ 1,200		$ 1,200
Storm Restoration Costs [Member] | FPL [Member]
Subsidiary, Sale of Stock [Line Items]
Regulatory asset			$ 1,100		$ 1,100
Storm Restoration Costs [Member] | Scenario, Forecast [Member] | FPL [Member]
Subsidiary, Sale of Stock [Line Items]
Rate surcharge request (in dollars per MWh) | $ / MWh		4
Storm reserve								$ 112
[1]	FPL's comprehensive income is the same as reported net income.

Commitments and Contingencies49

Commitments and Contingencies (Planned Capital Expenditures) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)MW
FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	$ 1,530
2,018	4,645
2,019	4,155
2,020	4,745
2,021	4,500
Total	19,575
NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	705
2,018	3,205
2,019	1,515
2,020	330
2,021	280
Total	6,035
New Generation Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	350
2,018	625
2,019	550
2,020	1,310
2,021	950
Total	3,785
Allowance for funds used during construction (AFUDC) - remainder of 2017	30
Allowance for funds used during construction (AFUDC) - 2018	85
Allowance for funds used during construction (AFUDC) - 2019	49
Allowance for funds used during construction (AFUDC) - 2020	56
Allowance for funds used during construction (AFUDC) - 2021	35
Existing Generation Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	380
2,018	845
2,019	675
2,020	615
2,021	475
Total	2,990
Transmission And Distribution Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	590
2,018	2,725
2,019	2,530
2,020	2,465
2,021	2,680
Total	10,990
Nuclear Fuel Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	20
2,018	170
2,019	150
2,020	135
2,021	145
Total	620
General And Other Expenditures [Member] | FPL [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	190
2,018	280
2,019	250
2,020	220
2,021	250
Total	1,190
Wind Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	350
2,018	1,925
2,019	1,175
2,020	45
2,021	20
Total	$ 3,515
Planned new generation over 5 year period (in megawatts) | MW	4,075
Solar Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	$ 115
2,018	40
2,019	5
2,020	0
2,021	0
Total	$ 160
Planned new generation over 5 year period (in megawatts) | MW	175
Nuclear Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	$ 85
2,018	265
2,019	225
2,020	205
2,021	195
Total	975
Pipelines [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	105
2,018	915
2,019	40
2,020	20
2,021	10
Total	1,090
Other Expenditures [Member] | NextEra Energy Resources [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	50
2,018	60
2,019	70
2,020	60
2,021	55
Total	295
Corporate and Other [Member]
Planned Capital Expenditures [Line Items]
Remainder of 2017	20
2,018	60
2,019	85
2,020	55
2,021	40
Total	$ 260

Commitments and Contingencies50

Commitments and Contingencies (Long-term Purchase Commitment) (Details) $ in Millions	1 Months Ended			3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jan. 31, 2018USD ($)	Jan. 31, 2017USD ($)MW	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)MW	Sep. 30, 2016USD ($)
FPL [Member]
Required capacity and/or minimum payments [Abstract]
Capacity payments				$ 18	$ 41	$ 58	$ 134
Energy payments				28	$ 57	$ 70	$ 103
FPL [Member] | Take-or-Pay Contract Range 1 [Member]
Long-term Purchase Commitment [Line Items]
Minimum annual purchase commitments (in megawatts) | MW						375
FPL [Member] | Pay-for-Performance Contracts [Member]
Long-term Purchase Commitment [Line Items]
Minimum total purchase commitments (in megawatts) | MW						114
FPL [Member] | Capacity Charges [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2017				20		$ 20
2,018				65		65
2,019				50		50
2,020				20		20
2,021				20		20
Thereafter				250		250
FPL [Member] | Natural Gas, Including Transportation And Storage, Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2017				480		480
2,018				1,305		1,305
2,019				865		865
2,020				910		910
2,021				905		905
Thereafter				12,135		12,135
FPL [Member] | Coal Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2017				35		35
2,018				35		35
2,019				5		5
2,020				0		0
2,021				0		0
Thereafter				0		0
FPL [Member] | Sabal Trail and Florida Southeast Connection [Member] | Natural Gas, Including Transportation And Storage, Contract Minimum Payments [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2017				75		75
2,018				295		295
2,019				290		290
2,020				360		360
2,021				390		390
Thereafter				7,565		7,565
NextEra Energy Resources [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2017				570		570
2,018				1,455		1,455
2,019				135		135
2,020				105		105
2,021				80		80
Thereafter				390		390
NextEra Energy Resources [Member] | Contract Group 1 [Member]
Long-term Purchase Commitment [Line Items]
Commitment amount included in capital expenditures				2,500		2,500
Indiantown, Florida [Member] | FPL [Member] | Coal Fired Generation Facility [Member]
Long-term Purchase Commitment [Line Items]
Coal fired generating facility capacity (in megawatts) | MW			330
Purchase price			$ 451
Existing debt assumed			218
Other Regulatory Assets (Liabilities) [Member] | Indiantown, Florida [Member] | FPL [Member] | Coal Fired Generation Facility [Member]
Long-term Purchase Commitment [Line Items]
Regulatory asset			$ 451
Regulatory asset amortization period (in years)			9 years
Corporate and Other [Member]
Required capacity and/or minimum payments [Abstract]
Remainder of 2017				55		55
2,018				45		45
2,019				15		15
2,020				15		15
2,021				10		10
Thereafter				0		0
Commitment to invest				90		90
Joint Obligations Of NEECH and NEER included NEER Amounts due in the current year				170		170
Jointly Owned Electricity Generation Plant [Member] | FPL [Member]
Long-term Purchase Commitment [Line Items]
Plant in service, net book value				$ 193		$ 193
Scenario, Forecast [Member] | Jointly Owned Electricity Generation Plant [Member] | FPL [Member]
Long-term Purchase Commitment [Line Items]
Proportionate ownership percentage		20.00%
Regulatory asset		$ 150
Regulatory asset amortization period (in years)	15 years
Termination of operations, future payment		$ 90
Scenario, Forecast [Member] | Jointly Owned Electricity Generation Plant [Member] | JEA [Member]
Long-term Purchase Commitment [Line Items]
Proportionate ownership percentage		80.00%
Scenario, Forecast [Member] | Jointly Owned Electricity Generation Plant [Member] | Environmental Cost Recovery [Member] | FPL [Member]
Long-term Purchase Commitment [Line Items]
Regulatory asset amortization period (in years)	10 years

Commitments and Contingencies51

Commitments and Contingencies (Insurance) (Details) $ in Millions	Sep. 30, 2017USD ($)
Insurance [Abstract]
Maximum obtainable amount of private liability insurance available under Price-Anderson Act	$ 450
Amount of secondary financial protection liability insurance coverage per incident	13,000
Potential Retrospective Assessments Under Secondary Financial Protection System	1,000
Potential Retrospective Assessments Under Secondary Financial Protection System Payable Per Incident Per Year	152
Amount of coverage per occurrence per site for property damage, decontamination and premature decommissioning risks	2,750
Amount of sublimit for nonnuclear perils per occurrence per site under nuclear insurance mutual companies for property damage decontamination and premature decommissioning risks	1,500
Potential amount of retrospective assessment per occurrence per site for property damage, decontamination and premature decommissioning risks	178
FPL [Member]
Insurance [Abstract]
Potential Retrospective Assessments Under Secondary Financial Protection System	509
Potential Retrospective Assessments Under Secondary Financial Protection System Payable Per Incident Per Year	76
Potential amount of retrospective assessment per occurrence per site for property damage, decontamination and premature decommissioning risks	108
Seabrook Station [Member]
Insurance [Abstract]
Potential retrospective assessment recoverable from minority interest for nuclear liability secondary financial protection	15
Potential retrospective assessment recoverable from minority interest for property damage, decontamination and premature decommissioning risks	2
Duane Arnold Energy Center [Member]
Insurance [Abstract]
Potential retrospective assessment recoverable from minority interest for nuclear liability secondary financial protection	38
Amount of sublimit for nonnuclear perils per occurrence per site under nuclear insurance mutual companies for property damage decontamination and premature decommissioning risks	1,000
Potential retrospective assessment recoverable from minority interest for property damage, decontamination and premature decommissioning risks	5
St Lucie Unit No. 2 [Member]
Insurance [Abstract]
Potential retrospective assessment recoverable from minority interest for nuclear liability secondary financial protection	19
Potential retrospective assessment recoverable from minority interest for property damage, decontamination and premature decommissioning risks	$ 4

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Deemed capital structure of NextEra Energy Resources		70.00%		70.00%
OPERATING REVENUES		$ 4,808	$ 4,805	$ 13,185	$ 12,457
Operating expenses (income) - net		3,409	3,526	8,095	8,775
Net income (loss) attributable to NEE		847	753	3,223	1,946
Total assets		96,781		96,781		$ 89,993
FPL [Member]
Segment Reporting Information [Line Items]
OPERATING REVENUES		3,477	3,283	9,095	8,337
Operating expenses (income) - net		2,455	2,362	6,322	5,874
Net income (loss) attributable to NEE	[1]	566	515	1,537	1,356
Total assets		49,915		49,915		45,501
Operating Segments [Member] | FPL [Member]
Segment Reporting Information [Line Items]
OPERATING REVENUES		3,477	3,283	9,095	8,337
Operating expenses (income) - net		2,455	2,362	6,322	5,874
Net income (loss) attributable to NEE		566	515	1,537	1,356
Total assets		49,915		49,915		45,501
Operating Segments [Member] | NextEra Energy Resources [Member]
Segment Reporting Information [Line Items]
Operating revenues		1,333	1,430	4,052	3,841
Operating expenses (income) - net		964	974	2,852	2,575
Net income (loss) attributable to NEE		292	307	1,069	765
Total assets		44,991		44,991		41,743
Corporate, Non-Segment [Member] | Corporate and Other [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenues		(2)	92	38	279
Operating expenses (income) - net		(10)	190	(1,079)	326
Net income (loss) attributable to NEE		(11)	$ (69)	617	$ (175)
Total assets		$ 1,875		$ 1,875		$ 2,749
[1]	FPL's comprehensive income is the same as reported net income.

Summarized Financial Informat53

Summarized Financial Information of Capital Holdings (Statement of Operations) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Condensed Consolidating Statements of Income
Operating revenues	$ 4,808	$ 4,805	$ 13,185	$ 12,457
Operating expenses - net	(3,409)	(3,526)	(8,095)	(8,775)
Interest expense	(381)	(369)	(1,171)	(1,480)
Equity in earnings of subsidiaries	0	0	0	0
Other income - net	202	297	662	665
INCOME BEFORE INCOME TAXES	1,220	1,207	4,581	2,867
Income tax expense (benefit)	364	418	1,329	879
Net Income (Loss)	856	789	3,252	1,988
LESS NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	9	36	29	42
Net income (loss) attributable to NEE	847	753	3,223	1,946
Comprehensive income (loss) attributable to NEE	892	799	3,341	2,078
Consolidation, Eliminations [Member]
Condensed Consolidating Statements of Income
Operating revenues	3,443	3,279	9,031	8,326
Operating expenses - net	(2,424)	(2,489)	(6,276)	(6,005)
Interest expense	(121)	(114)	(360)	(342)
Equity in earnings of subsidiaries	(830)	(765)	(3,179)	(1,989)
Other income - net	21	17	31	57
INCOME BEFORE INCOME TAXES	89	(72)	(753)	47
Income tax expense (benefit)	355	266	919	775
Net Income (Loss)	(266)	(338)	(1,672)	(728)
LESS NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	0	0	0	0
Net income (loss) attributable to NEE	(266)	(338)	(1,672)	(728)
Comprehensive income (loss) attributable to NEE	(312)	(384)	(1,784)	(866)
Reportable Legal Entities [Member] | NextEra Energy (Guarantor) [Member]
Condensed Consolidating Statements of Income
Operating revenues	0	0	0	0
Operating expenses - net	(3)	(5)	(13)	(14)
Interest expense	(1)	0	(2)	(1)
Equity in earnings of subsidiaries	830	765	3,179	1,989
Other income - net	0	4	1	5
INCOME BEFORE INCOME TAXES	826	764	3,165	1,979
Income tax expense (benefit)	(21)	11	(58)	33
Net Income (Loss)	847	753	3,223	1,946
LESS NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	0	0	0	0
Net income (loss) attributable to NEE	847	753	3,223	1,946
Comprehensive income (loss) attributable to NEE	892	799	3,341	2,078
Reportable Legal Entities [Member] | NEECH Non-Guarantor Subsidiaries [Member]
Condensed Consolidating Statements of Income
Operating revenues	1,365	1,526	4,154	4,131
Operating expenses - net	(982)	(1,032)	(1,806)	(2,756)
Interest expense	(259)	(255)	(809)	(1,137)
Equity in earnings of subsidiaries	0	0	0	0
Other income - net	181	276	630	603
INCOME BEFORE INCOME TAXES	305	515	2,169	841
Income tax expense (benefit)	30	141	468	71
Net Income (Loss)	275	374	1,701	770
LESS NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	9	36	29	42
Net income (loss) attributable to NEE	266	338	1,672	728
Comprehensive income (loss) attributable to NEE	$ 312	$ 384	$ 1,784	$ 866

Summarized Financial Informat54

Summarized Financial Information of Capital Holdings (Balance Sheet) (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
NEECH a 100% owned subsidiary of NEE	100.00%
PROPERTY, PLANT AND EQUIPMENT
Electric plant in service and other property	$ 92,548	$ 87,013
Accumulated depreciation and amortization	(21,460)	(20,101)
Total property, plant and equipment - net	71,088	66,912
CURRENT ASSETS
Cash and cash equivalents	1,381	1,292	$ 681	$ 571
Receivables	2,750	2,439
Other	2,896	3,678
Total current assets	7,027	7,409
OTHER ASSETS
Investment in subsidiaries	0	0
Other	18,666	15,672
Total other assets	18,666	15,672
TOTAL ASSETS	96,781	89,993
CAPITALIZATION
Common shareholders' equity	26,398	24,341
Noncontrolling interests	923	990
Long-term debt	30,345	27,818
Total capitalization	57,666	53,149
CURRENT LIABILITIES
Debt due within one year	4,614	3,022
Accounts payable	2,256	3,447
Other	4,734	4,450
Total current liabilities	11,604	10,919
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	2,882	2,736
Deferred income taxes	12,563	11,101
Other	12,066	12,088
Total other liabilities and deferred credits	27,511	25,925
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	96,781	89,993
Reportable Legal Entities [Member] | NextEra Energy (Guarantor) [Member]
PROPERTY, PLANT AND EQUIPMENT
Electric plant in service and other property	23	28
Accumulated depreciation and amortization	(16)	(18)
Total property, plant and equipment - net	7	10
CURRENT ASSETS
Cash and cash equivalents	1	1	0	0
Receivables	340	88
Other	4	2
Total current assets	345	91
OTHER ASSETS
Investment in subsidiaries	26,139	24,323
Other	821	867
Total other assets	26,960	25,190
TOTAL ASSETS	27,312	25,291
CAPITALIZATION
Common shareholders' equity	26,398	24,341
Noncontrolling interests	0	0
Long-term debt	0	0
Total capitalization	26,398	24,341
CURRENT LIABILITIES
Debt due within one year	0	0
Accounts payable	1	1
Other	286	231
Total current liabilities	287	232
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	0	0
Deferred income taxes	37	82
Other	590	636
Total other liabilities and deferred credits	627	718
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	27,312	25,291
Reportable Legal Entities [Member] | NEECH Non-Guarantor Subsidiaries [Member]
PROPERTY, PLANT AND EQUIPMENT
Electric plant in service and other property	41,530	38,671
Accumulated depreciation and amortization	(8,714)	(7,778)
Total property, plant and equipment - net	32,816	30,893
CURRENT ASSETS
Cash and cash equivalents	1,370	1,258	634	546
Receivables	1,441	1,615
Other	1,257	1,877
Total current assets	4,068	4,750
OTHER ASSETS
Investment in subsidiaries	0	0
Other	10,152	8,992
Total other assets	10,152	8,992
TOTAL ASSETS	47,036	44,635
CAPITALIZATION
Common shareholders' equity	8,732	7,699
Noncontrolling interests	923	990
Long-term debt	20,290	18,112
Total capitalization	29,945	26,801
CURRENT LIABILITIES
Debt due within one year	2,821	2,237
Accounts payable	1,559	2,668
Other	1,885	2,624
Total current liabilities	6,265	7,529
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	880	816
Deferred income taxes	3,439	3,002
Other	6,507	6,487
Total other liabilities and deferred credits	10,826	10,305
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	47,036	44,635
Consolidation, Eliminations [Member]
PROPERTY, PLANT AND EQUIPMENT
Electric plant in service and other property	50,995	48,314
Accumulated depreciation and amortization	(12,730)	(12,305)
Total property, plant and equipment - net	38,265	36,009
CURRENT ASSETS
Cash and cash equivalents	10	33	$ 47	$ 25
Receivables	969	736
Other	1,635	1,799
Total current assets	2,614	2,568
OTHER ASSETS
Investment in subsidiaries	(26,139)	(24,323)
Other	7,693	5,813
Total other assets	(18,446)	(18,510)
TOTAL ASSETS	22,433	20,067
CAPITALIZATION
Common shareholders' equity	(8,732)	(7,699)
Noncontrolling interests	0	0
Long-term debt	10,055	9,706
Total capitalization	1,323	2,007
CURRENT LIABILITIES
Debt due within one year	1,793	785
Accounts payable	696	778
Other	2,563	1,595
Total current liabilities	5,052	3,158
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	2,002	1,920
Deferred income taxes	9,087	8,017
Other	4,969	4,965
Total other liabilities and deferred credits	16,058	14,902
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	$ 22,433	$ 20,067

Summarized Financial Informat55

Summarized Financial Information of Capital Holdings (Statement of Cash Flows) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Condensed Consolidating Statements of Cash Flows
NET CASH PROVIDED BY OPERATING ACTIVITIES	$ 5,160	$ 5,294
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases	(8,587)	(7,929)
Proceeds from sale of the fiber-optic telecommunications business	1,482	0
Capital contributions from NEE	0	0
Sale of independent power and other investments of NEER	159	395
Proceeds from sale or maturity of securities in special use funds	2,059	2,635
Purchases of securities in special use funds	(2,146)	(2,711)
Proceeds from sales of noncontrolling interests in NEP	0	645
Other - net	198	(18)
Net cash used in investing activities	(6,835)	(6,983)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt	5,196	4,644
Retirements of long-term debt	(3,892)	(2,654)
Proceeds from differential membership investors	340	328
Net change in commercial paper	1,806	254
Proceeds from other short-term debt	200	500
Repayments of other short-term debt	(2)	(362)
Issuances of common stock - net	36	528
Dividends on common stock	(1,382)	(1,205)
Contributions from (dividends to) NEE	0	0
Other - net	(538)	(234)
Net cash provided by (used in) financing activities	1,764	1,799
Net increase (decrease) in cash and cash equivalents	89	110
Cash and cash equivalents at beginning of period	1,292	571
Cash and cash equivalents at end of period	1,381	681
NextEra Energy (Guarantor) [Member]
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from differential membership investors		0
Repayments of other short-term debt		0
Reportable Legal Entities [Member] | NextEra Energy (Guarantor) [Member]
Condensed Consolidating Statements of Cash Flows
NET CASH PROVIDED BY OPERATING ACTIVITIES	1,464	1,164
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases	0	(1)
Proceeds from sale of the fiber-optic telecommunications business	0	0
Capital contributions from NEE	(46)	(432)
Sale of independent power and other investments of NEER	0	0
Proceeds from sale or maturity of securities in special use funds	0	0
Purchases of securities in special use funds	0	0
Proceeds from sales of noncontrolling interests in NEP	0	0
Other - net	7	0
Net cash used in investing activities	(39)	(433)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt	0	0
Retirements of long-term debt	0	0
Proceeds from differential membership investors	0
Net change in commercial paper	0	0
Proceeds from other short-term debt	0	0
Repayments of other short-term debt	0
Issuances of common stock - net	36	528
Dividends on common stock	(1,382)	(1,205)
Contributions from (dividends to) NEE	0	0
Other - net	(79)	(54)
Net cash provided by (used in) financing activities	(1,425)	(731)
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	1	0
Cash and cash equivalents at end of period	1	0
Reportable Legal Entities [Member] | NEECH Non-Guarantor Subsidiaries [Member]
Condensed Consolidating Statements of Cash Flows
NET CASH PROVIDED BY OPERATING ACTIVITIES	1,793	1,781
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases	(4,808)	(4,831)
Proceeds from sale of the fiber-optic telecommunications business	1,482	0
Capital contributions from NEE	0	0
Sale of independent power and other investments of NEER	159	395
Proceeds from sale or maturity of securities in special use funds	819	860
Purchases of securities in special use funds	(827)	(874)
Proceeds from sales of noncontrolling interests in NEP	0	645
Other - net	163	(49)
Net cash used in investing activities	(3,012)	(3,854)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt	4,995	4,494
Retirements of long-term debt	(3,819)	(2,392)
Proceeds from differential membership investors	340	328
Net change in commercial paper	995	(154)
Proceeds from other short-term debt	0	0
Repayments of other short-term debt	0	(212)
Issuances of common stock - net	0	0
Dividends on common stock	0	0
Contributions from (dividends to) NEE	(722)	294
Other - net	(458)	(197)
Net cash provided by (used in) financing activities	1,331	2,161
Net increase (decrease) in cash and cash equivalents	112	88
Cash and cash equivalents at beginning of period	1,258	546
Cash and cash equivalents at end of period	1,370	634
Consolidation, Eliminations [Member]
Condensed Consolidating Statements of Cash Flows
NET CASH PROVIDED BY OPERATING ACTIVITIES	1,903	2,349
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases	(3,779)	(3,097)
Proceeds from sale of the fiber-optic telecommunications business	0	0
Capital contributions from NEE	46	432
Sale of independent power and other investments of NEER	0	0
Proceeds from sale or maturity of securities in special use funds	1,240	1,775
Purchases of securities in special use funds	(1,319)	(1,837)
Proceeds from sales of noncontrolling interests in NEP	0	0
Other - net	28	31
Net cash used in investing activities	(3,784)	(2,696)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt	201	150
Retirements of long-term debt	(73)	(262)
Proceeds from differential membership investors	0	0
Net change in commercial paper	811	408
Proceeds from other short-term debt	200	500
Repayments of other short-term debt	(2)	(150)
Issuances of common stock - net	0	0
Dividends on common stock	0	0
Contributions from (dividends to) NEE	722	(294)
Other - net	(1)	17
Net cash provided by (used in) financing activities	1,858	369
Net increase (decrease) in cash and cash equivalents	(23)	22
Cash and cash equivalents at beginning of period	33	25
Cash and cash equivalents at end of period	$ 10	$ 47