NextEra Energy Partners (NEP) 10-Q 25 Oct 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	9 Months Ended
	Sep. 30, 2021shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	1-36518
Entity Registrant Name	NEXTERA ENERGY PARTNERS, LP
Entity Tax Identification Number	30-0818558
Entity Address, Address Line One	700 Universe Boulevard
Entity Address, City or Town	Juno Beach
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33408
City Area Code	561
Local Phone Number	694-4000
Entity Incorporation, State or Country Code	DE
Title of 12(b) Security	Common units
Trading Symbol	NEP
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	76,619,403
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001603145
Current Fiscal Year End Date	--12-31

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Loss) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
OPERATING REVENUES
Renewable energy sales		$ 193	$ 187	$ 543	$ 546
Texas pipelines service revenues		59	53	208	159
Total operating revenues(a)	[1]	252	240	751	705
OPERATING EXPENSES
Operations and maintenance(b)	[2]	110	93	302	273
Depreciation and amortization		71	68	207	200
Taxes other than income taxes and other		7	11	30	25
Total operating expenses – net		188	172	539	498
OPERATING INCOME		64	68	212	207
OTHER INCOME (DEDUCTIONS)
Interest expense		(24)	93	145	(730)
Equity in earnings of equity method investees		47	44	131	91
Equity in earnings (losses) of non-economic ownership interests		12	11	26	(7)
Other – net		1	4	3	4
Total other income (deductions) – net		36	152	305	(642)
INCOME (LOSS) BEFORE INCOME TAXES		100	220	517	(435)
INCOME TAX EXPENSE (BENEFIT)		6	25	54	(37)
NET INCOME (LOSS)	[3]	94	195	463	(398)
NET INCOME ATTRIBUTABLE TO PREFERRED DISTRIBUTIONS		0	(1)	0	(5)
NET LOSS (INCOME) ATTRIBUTABLE TO NONCONTROLLING INTERESTS		(76)	(138)	(317)	284
NET INCOME (LOSS) ATTRIBUTABLE TO NEXTERA ENERGY PARTNERS, LP		$ 18	$ 56	$ 146	$ (119)
Earnings (loss) per common unit attributable to NextEra Energy Partners, LP - basic (in dollars per share)		$ 0.24	$ 0.83	$ 1.92	$ (1.80)
Earnings (loss) per common unit attributable to NextEra Energy Partners, LP - assuming dilution (in dollars per share)		$ 0.24	$ 0.76	$ 1.92	$ (1.80)
[1]	Includes related party revenues of $5 million and $2 million for the three months ended September 30, 2021 and 2020, respectively, and $44 million and $13 million for the nine months ended September 30, 2021 and 2020, respectively.
[2]	Includes O&M expenses related to renewable energy projects of $52 million and $51 million for the three months ended September 30, 2021 and 2020, respectively, and $144 million and $150 million for the nine months ended September 30, 2021 and 2020, respectively. Includes O&M expenses related to the Texas pipelines of $11 million and $10 million for the three months ended September 30, 2021 and 2020, respectively, and $35 million and $32 million for the nine months ended September 30, 2021 and 2020, respectively. Total O&M expenses presented include related party amounts of $52 million and $40 million for the three months ended September 30, 2021 and 2020, respectively, and $151 million and $107 million for the nine months ended September 30, 2021 and 2020, respectively.
[3]	For the nine month periods ended September 30, 2021 and 2020, NEP recognized approximately $1 million of other comprehensive income related to equity method investees, which was primarily attributable to noncontrolling interests.

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Income (Loss) (Parenthetical) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Related party revenues	$ 5,000,000	$ 2,000,000	$ 44,000,000	$ 13,000,000
Operations and maintenance related to renewable energy projects	52,000,000	51,000,000	144,000,000	150,000,000
Operations and maintenance related to Texas pipelines	11,000,000	10,000,000	35,000,000	32,000,000
Operations and maintenance related party	52,000,000	40,000,000	151,000,000	107,000,000
Other comprehensive income related to equity method investees	$ 0	$ 0	$ 1,000,000	$ 1,000,000

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 133	$ 108
Accounts receivable	108	83
Other receivables	14	155
Due from related parties	322	28
Inventory	32	24
Other	26	16
Total current assets	635	414
Other assets:
Property, plant and equipment – net	7,159	7,163
Goodwill	786	609
Investments in equity method investees	1,848	1,814
Deferred income taxes	213	249
Other	289	131
Total other assets	12,810	12,148
TOTAL ASSETS	13,445	12,562
Current liabilities:
Accounts payable and accrued expenses	23	143
Due to related parties	48	66
Current portion of long-term debt	14	12
Accrued interest	17	25
Derivatives	23	20
Accrued property taxes	24	22
Other	52	62
Total current liabilities	201	350
Other liabilities and deferred credits:
Long-term debt	3,969	3,376
Asset retirement obligation	156	144
Derivatives	529	782
Due to related parties	33	33
Other	152	170
Total other liabilities and deferred credits	4,839	4,505
TOTAL LIABILITIES	5,040	4,855
COMMITMENTS AND CONTINGENCIES
EQUITY
Common units (76.6 and 75.9 units issued and outstanding, respectively)	2,329	2,362
Accumulated other comprehensive loss	(8)	(8)
Noncontrolling interests	6,084	5,353
TOTAL EQUITY	8,405	7,707
TOTAL LIABILITIES AND EQUITY	13,445	12,562
Intangible assets – PPAs - net
Other assets:
Intangible assets	1,917	1,572
Customer Relationships
Other assets:
Intangible assets	$ 598	$ 610

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - shares	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Common units issued (in shares)	76,600,000	75,900,000
Common units outstanding (in shares)	76,600,000	75,900,000

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	[1]	$ 463	$ (398)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization		207	200
Intangible amortization – PPAs		82	77
Change in value of derivative contracts		(250)	602
Deferred income taxes		51	(44)
Equity in earnings of equity method investees, net of distributions received		(2)	50
Equity in losses (earnings) of non-economic ownership interests, net of distributions received		(19)	7
Other – net		13	17
Changes in operating assets and liabilities:
Current assets		(33)	(10)
Noncurrent assets		(7)	1
Current liabilities		(10)	(16)
Noncurrent liabilities		(3)	(4)
Net cash provided by operating activities		492	482
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of membership interests in subsidiaries – net		(800)	0
Capital expenditures and other investments		(82)	(236)
Proceeds from CITCs		75	0
Payments to related parties under CSCS agreement – net		(295)	(70)
Distributions from equity method investee		1	8
Other		32	15
Net cash used in investing activities		(1,069)	(283)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of common units – net		50	2
Issuances of long-term debt		624	68
Retirements of long-term debt		(98)	(17)
Debt issuance costs		(3)	(1)
Capped call transaction		(31)	0
Partner contributions		0	7
Partner distributions		(387)	(320)
Preferred unit distributions		0	(6)
Proceeds on sale of differential membership interests		48	0
Proceeds from differential membership investors		74	94
Payments to differential membership investors		(27)	(23)
Proceeds on sale of Class B noncontrolling interests – net		493	0
Payments to Class B noncontrolling interest investors		(63)	(34)
Change in amounts due to related parties		(12)	(2)
Payment of CITC obligation to third party		(65)	0
Other		(1)	0
Net cash provided by (used in) financing activities		602	(232)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		25	(33)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH – BEGINNING OF PERIOD		112	132
CASH, CASH EQUIVALENTS AND RESTRICTED CASH – END OF PERIOD		137	99
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Change in noncash investments in equity method investees – net		130	7
Accrued property and other additions		5	67
Conversion of convertible notes to common units		$ 0	$ 300
[1]	For the nine month periods ended September 30, 2021 and 2020, NEP recognized approximately $1 million of other comprehensive income related to equity method investees, which was primarily attributable to noncontrolling interests.

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Equity $ in Millions		USD ($)shares		ATM ProgramUSD ($)shares	Cumulative Effect, Period of Adoption, AdjustmentUSD ($)	[6]	Common StockUSD ($)$ / sharesshares	Series A Convertible Preferred Unitsshares	Preferred Units [Member]shares	Preferred Partner [Member]USD ($)	Units [Member]shares		Limited Partners [Member]USD ($)		Limited Partners [Member]Cumulative Effect, Period of Adoption, AdjustmentUSD ($)	[6]	Accumulated Other Comprehensive Income (Loss) [Member]USD ($)	Non-controlling Interests [Member]USD ($)	Non-controlling Interests [Member]Cumulative Effect, Period of Adoption, AdjustmentUSD ($)	[6]	Common Stock$ / shares	Common StockATM ProgramUSD ($)
Beginning balance, units at Dec. 31, 2019 | shares									4,700,000		65,500,000
Beginning balance at Dec. 31, 2019		$ 7,066								$ 183			$ 2,008				$ (8)	$ 4,883
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of units, in units | shares	[1]								(1,800,000)		7,500,000
Issuance of common units - net	[1]	347								(71)			418
Net income		(398)	[2]							5			(119)					(284)
Other comprehensive income		1															0	1
Related party note receivable		1																1
Related party distributions		(212)																(212)
Related party contributions		6																6
Changes in non-economic ownership interests		(7)																(7)
Other differential membership investment activity		71																71
Payments to Class B noncontrolling interest investors		(34)																(34)
Distributions to unitholders	[3]	(115)								(5)			(110)
Other		(3)											(3)
Ending balance, units at Sep. 30, 2020 | shares									2,900,000		73,000,000
Ending balance at Sep. 30, 2020		6,723								112			2,194				(8)	4,425
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of stock, shares converted (in shares) | shares							5,700,000	1,800,000
Conversion ratio								1
Deferred tax asset		47
Distributions per common unit (usd per share) | $ / shares																					$ 1.6675
Beginning balance, units at Jun. 30, 2020 | shares									4,700,000		65,500,000
Beginning balance at Jun. 30, 2020		6,283								183			1,759				(8)	4,349
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of units, in units | shares	[4]								(1,800,000)		7,500,000
Issuance of common units - net	[4]	347								(71)			418
Net income		195	[2]							1			56					138
Related party distributions		(81)																(81)
Related party contributions		1																1
Changes in non-economic ownership interests		(7)																(7)
Other differential membership investment activity		39																39
Payments to Class B noncontrolling interest investors		(13)																(13)
Distributions to unitholders	[5]	(40)								(1)			(39)
Other		(1)											0					(1)
Ending balance, units at Sep. 30, 2020 | shares									2,900,000		73,000,000
Ending balance at Sep. 30, 2020		6,723								$ 112			2,194				(8)	4,425
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of stock, shares converted (in shares) | shares							5,700,000	1,800,000
Conversion ratio								1
Deferred tax asset		47
Distributions per common unit (usd per share) | $ / shares																					0.5775
Convertible notes		$ 300					$ 300
Beginning balance, units at Dec. 31, 2020 | shares		75,900,000									75,900,000
Beginning balance at Dec. 31, 2020		$ 7,707			$ (56)								2,362		$ (57)		(8)	5,353	$ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of units, in units | shares				700,000							700,000	[7]
Issuance of common units - net		56	[7]	$ 50									56	[7]
Net income		463	[2]										146					317
Other comprehensive income		1																1
Related party note receivable		1																1
Related party distributions		(243)																(243)
Changes in non-economic ownership interests		130																130
Other differential membership investment activity		47																47
Payments to Class B noncontrolling interest investors		(63)																(63)
Distributions to unitholders	[8]	(146)											(146)
Sale of Class B noncontrolling interest – net		493																493
Sale of differential membership interest		48																48
Capped call transaction		(31)
Other		$ (2)																(1)
Ending balance, units at Sep. 30, 2021 | shares		76,600,000									76,600,000
Ending balance at Sep. 30, 2021		$ 8,405											2,329				(8)	6,084
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Deferred tax asset				$ 6																		$ 7
Distributions per common unit (usd per share) | $ / shares							$ 1.9150
Beginning balance, units at Jun. 30, 2021 | shares											76,600,000
Beginning balance at Jun. 30, 2021		8,455											2,363				(8)	6,100
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		94	[2]										18					76
Related party distributions		(94)																(94)
Changes in non-economic ownership interests		6																6
Other differential membership investment activity		24																24
Payments to Class B noncontrolling interest investors		(28)																(28)
Distributions to unitholders	[9]	(51)											(51)
Other		$ (1)											(1)
Ending balance, units at Sep. 30, 2021 | shares		76,600,000									76,600,000
Ending balance at Sep. 30, 2021		$ 8,405											$ 2,329				$ (8)	$ 6,084
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions per common unit (usd per share) | $ / shares																					$ 0.6625
Convertible notes		$ 64
[1]	During the nine months ended September 30, 2020, NEP issued 1.8 million NEP common units upon the conversion of preferred units on a one-for-one basis and issued approximately 5.7 million NEP common units upon the conversion of $300 million convertible notes (see Note 8 - Common Unit Issuances). NEP recognized a deferred tax asset of $47 million related to the issuance of NEP common units.
[2]	For the nine month periods ended September 30, 2021 and 2020, NEP recognized approximately $1 million of other comprehensive income related to equity method investees, which was primarily attributable to noncontrolling interests.
[3]	Distributions per common unit of $1.6675 were paid during the nine months ended September 30, 2020.
[4]	During the three months ended September 30, 2020, NEP issued 1.8 million NEP common units upon the conversion of preferred units on a one-for-one basis and issued approximately 5.7 million NEP common units upon the conversion of $300 million convertible notes (see Note 8 - Common Unit Issuances). NEP recognized a deferred tax asset of $47 million related to the issuance of NEP common units.
[5]	Distributions per common unit of $0.5775 were paid during the three months ended September 30, 2020
[6]	See Note 7 for further discussion. Includes deferred tax impact of approximately $7 million.
[7]	See Note 8 - ATM Program for further discussion. Includes deferred tax impact of approximately $6 million.
[8]	Distributions per common unit of $1.9150 were paid during the nine months ended September 30, 2021.
[9]	Distributions per common unit of $0.6625 were paid during the three months ended September 30, 2021.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Acquisitions	Acquisitions In December 2020, a subsidiary of NEP completed the acquisition from NEER (2020 acquisition) of 100% of the membership interests in Wilmot Energy Center, LLC (Wilmot) and 100% of the Class C membership interests in Pine Brooke Class A Holdings, LLC (Pine Brooke Holdings). Wilmot is an approximately 100 MW solar generation facility and 30 MW battery storage facility located in Arizona which entered service in the second quarter of 2021. The Class C membership interests in Pine Brooke Holdings represent an indirect 40% noncontrolling ownership interest in each of: • Soldier Creek Wind, LLC, a project company that owns an approximately 300 MW wind generation facility located in Kansas; • Ponderosa Wind, LLC, a project company that owns an approximately 200 MW wind generation facility located in Oklahoma; • Blue Summit III Wind, LLC, a project company that owns an approximately 200 MW wind generation facility located in Texas; • Saint Solar, LLC, a project company that owns an approximately 100 MW solar generation facility located in Arizona; • Taylor Creek Solar, LLC, a project company that owns an approximately 75 MW solar generation facility located in Florida; • Harmony Florida Solar, LLC, a project company that owns an approximately 75 MW solar generation facility located in Florida; and • Sanford Airport Solar, LLC, a project company that owns an approximately 49 MW solar generation facility located in Maine. NEP's ownership interest in Pine Brooke Holdings is reflected as investments in equity method investees. In August 2021, an indirect subsidiary of NEP completed the acquisition (2021 third-party acquisition) of 100% of the ownership interests in each of: • Highview Power Holdings, LLC, which indirectly owns a 150 MW wind generation facility (Alta Wind VIII) located in California; • Brookfield Windstar Holding, LLC, which indirectly owns a 120 MW wind generation facility (Windstar) located in California; • Brookfield Coram Wind Development, LLC, which indirectly owns a 22 MW wind generation facility (Coram) located in California; and • BAIF Granite Holdings, LLC, which indirectly owns a 99 MW wind generation facility (Granite) located in New Hampshire. The purchase price included a base purchase price of approximately $733 million, plus closing adjustments primarily related to pre-acquisition debt make whole costs of $55 million and working capital of $27 million, including cash of $18 million. Under the acquisition method, the purchase price was allocated to the assets acquired and liabilities assumed based on their estimated fair value. All fair value measurements of assets acquired and liabilities assumed were based on significant estimates and assumptions, including Level 3 (unobservable) inputs, which require judgment. Estimates and assumptions include the projected timing and amount of future cash flows, discount rates reflecting risk inherent in future cash flows and future market prices. The excess of the purchase price over the estimated fair value of assets acquired and liabilities assumed was recognized as goodwill at the acquisition date. The goodwill arising from the acquisition results largely from the assets being well-situated in strong markets with long-term renewables demand, providing long-term optionality for the assets. All of the goodwill is expected to be deductible for income tax purposes over a 15 year period. The valuation of the acquired net assets is subject to change as NEP obtains additional information for its estimates during the measurement period. The primary areas of the purchase price allocation that are not yet finalized relate to identifiable intangible assets and residual goodwill. The following table summarizes the preliminary amounts recognized by NEP for the estimated fair value of assets acquired and liabilities assumed in the 2021 third-party acquisition: (millions) Total consideration transferred $ 815 Identifiable assets acquired and liabilities assumed Cash $ 18 Accounts receivable, inventory and prepaid expenses 14 Property, plant and equipment – net 191 Intangible assets – PPAs (a) 432 Goodwill 177 Other noncurrent assets 1 Accounts payable, accrued expenses and other current liabilities (5) Other noncurrent liabilities (13) Total net identifiable assets, at fair value $ 815 ____________________ (a) Intangible assets - PPAs are amortized into operating revenues on a straight-line basis over the remaining contract terms of the related PPAs. At September 30, 2021, amortization of the intangible assets - PPAs is expected to be approximately $12 million in 2021 and $35 million in each of the next four years. In October 2021, an indirect subsidiary of NEP completed the acquisition of ownership interests in a portfolio of wind and solar generation facilities with a combined net generating capacity totaling approximately 589 MW from subsidiaries of NEER for a purchase price consisting of cash consideration of approximately $563 million, plus working capital and other adjustments of $26 million (subject to post-closing adjustments). NEP's share of the entities' debt and noncontrolling interests related to differential membership investors was approximately $270 million at the time of closing. NEP is in the process of evaluating the purchase accounting considerations, including the initial purchase price allocation. The acquisition included the following assets: • 100% of the membership interests in HW CA Holdings, LLC, that indirectly owns an approximately 162 MW wind generation facility (High Winds) located in California; • 100% of the membership interests in Dogwood Wind Holdings, LLC, that indirectly owns two wind generation facilities (Oliver III Wind and Osborn Wind) with a combined total generating capacity of approximately 300 MW located in North Dakota and Missouri; • 100% of the membership interests in Southwest Solar Holdings, LLC, that indirectly owns an approximately 5 MW solar generation facility (Hatch Solar) located in New Mexico; • 33.3% of the membership interests in Shaw Creek Solar Holdings, LLC, that indirectly owns an approximately 75 MW solar generation facility (Shaw Creek) located in South Carolina; • 33.3% of the membership interests in Nutmeg Solar Holdings, LLC, that indirectly owns an approximately 20 MW solar generation facility (Nutmeg Solar) located in Connecticut; and • 100% of the Class C membership interests (which represents 33.3% of the total ownership interest in the underlying projects) in Solar Holdings Portfolio 12, LLC, that has indirect ownership interests in: ◦ two solar generation facilities (Westside Solar and Whitney Point Solar) with a combined total generating capacity of approximately 40 MW located in California; ◦ the DG Portfolio 2019 portfolio, that indirectly owns multiple distributed solar generation facilities with a combined total generating capacity of approximately 217 MW located in various states across the U.S.; and ◦ the DG Waipio portfolio, that indirectly owns multiple distributed solar generation facilities with a combined total generating capacity of approximately 13 MW located in Hawaii. In October 2021, an indirect subsidiary of NEP entered into a purchase and sale agreement to acquire a 102 MW wind generation facility (Coram II) located in California. NEP expects to complete the acquisition by early 2022, subject to customary closing conditions and the receipt of regulatory approvals, for cash consideration of approximately $130 million, subject to working capital and other closing adjustments, plus the assumption of debt estimated to be approximately $150 million at the time of closing. Additionally, an indirect subsidiary of NEP entered into an agreement in October 2021 with indirect subsidiaries of NEER to acquire ownership interests in a portfolio of wind and solar generation facilities with a combined net generating capacity totaling approximately 1,260 MW and net storage capacity totaling 58 MW for a purchase price consisting of cash consideration of $849 million, subject to customary working capital and other adjustments, plus NEP's share of the entities' noncontrolling interests related to differential membership investors estimated to be approximately $866 million at the time of closing. See Part II – Item 5 for further discussion. NEP incurred approximately $11 million in acquisition-related costs during the nine months ended September 30, 2021 which are reflected as operations and maintenance in the condensed consolidated statements of income.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Revenue is recognized when control of the promised goods or services is transferred to customers at an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. NEP's operating revenues are generated primarily from various non-affiliated parties under PPAs and natural gas transportation agreements. NEP's operating revenues from contracts with customers are partly offset by the amortization of intangible assets - PPAs. Revenue is recognized as energy and any related renewable energy attributes are delivered, based on rates stipulated in the respective PPAs, or natural gas transportation services are performed. NEP believes that the obligation to deliver energy and provide the natural gas transportation services is satisfied over time as the customer simultaneously receives and consumes benefits provided by NEP. In addition, NEP believes that the obligation to deliver renewable energy attributes is satisfied at multiple points in time, with the control of the renewable energy attribute being transferred at the same time the related energy is delivered. Included in NEP’s operating revenues for the three months ended September 30, 2021 is $190 million and $58 million, for the nine months ended September 30, 2021 is $530 million and $176 million, for the three months ended September 30, 2020 is $184 million and $53 million, and for the nine months ended September 30, 2020 is $533 million and $157 million of revenue from contracts with customers for renewable energy sales and natural gas transportation services, respectively. NEP's accounts receivable are primarily associated with revenues earned from contracts with customers. Receivables represent unconditional rights to consideration and reflect the differences in timing of revenue recognition and cash collections. For substantially all of NEP's receivables, regardless of the type of revenue transaction from which the receivable originated, customer and counterparty credit risk is managed in the same manner and the terms and conditions of payment are similar. NEP recognizes revenues as energy and any related renewable energy attributes are delivered or natural gas transportation services are performed, consistent with the amounts billed to customers based on rates stipulated in the respective agreements. NEP considers the amount billed to represent the value of energy delivered or services provided to the customer. NEP’s customers typically receive bills monthly with payment due within 30 days. The contracts with customers related to pipeline service revenues contain a fixed price related to firm natural gas transportation capacity with maturity dates ranging from 2021 to 2035. At September 30, 2021, NEP expects to record approximately $1.8 billion of revenues over the remaining terms of the related contracts as the capacity is provided. Revenues yet to be earned under contracts with customers to deliver energy and any related energy attributes, which have maturity dates ranging from 2026 to 2046, will vary based on the volume of energy delivered. At September 30, 2021, NEP expects to record approximately $194 million of revenues related to the fixed price components of one PPA through 2039 as the energy is delivered.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income taxes are calculated for NEP as a single taxpaying corporation for U.S. federal and state income taxes (based on NEP's election to be taxed as a corporation). NEP recognizes in income its applicable ownership share of U.S. income taxes due to the disregarded tax status of substantially all of the U.S. projects under NEP OpCo. Net income or loss attributable to noncontrolling interests includes minimal U.S. taxes. The effective tax rates for the three and nine months ended September 30, 2021 were approximately 6% and 10%, respectively, and for the three and nine months ended September 30, 2020 were approximately 11% and 9%, respectively. The effective tax rates were below the U.S. statutory rate of 21% primarily due to tax expense (benefit) attributable to noncontrolling interests of approximately $(14) million and $(64) million for the three and nine months ended September 30, 2021, respectively, and $(28) million and $61 million for the three and nine months ended September 30, 2020, respectively.

Non-Derivative Fair Value Measu

Non-Derivative Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Non-Derivative Fair Value Measurements	Non-Derivative Fair Value Measurements Non-derivative fair value measurements consist of NEP's cash equivalents. The fair value of these financial assets is determined using the valuation techniques and inputs as described in Note 3 - Fair Value Measurement of Derivative Instruments. The fair value of money market funds that are included in cash and cash equivalents, current other assets and noncurrent other assets on NEP's condensed consolidated balance sheets is estimated using a market approach based on current observable market prices. Recurring Non-Derivative Fair Value Measurements - NEP’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, 2021 December 31, 2020 Level 1 Level 2 Total Level 1 Level 2 Total (millions) Assets: Cash equivalents $ 1 $ — $ 1 $ 2 $ — $ 2 Total assets $ 1 $ — $ 1 $ 2 $ — $ 2 Financial Instruments Recorded at Other than Fair Value - The carrying amounts and estimated fair values of other financial instruments recorded at other than fair value are as follows: September 30, 2021 December 31, 2020 Carrying Fair Carrying Fair (millions) Long-term debt, including current maturities (a) $ 3,983 $ 4,135 $ 3,388 $ 3,529 ____________________ (a)

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activity	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activity	Derivative Instruments and Hedging Activity NEP uses derivative instruments (primarily interest rate swaps) to manage the interest rate cash flow risk associated with outstanding and expected future debt issuances and borrowings. NEP records all derivative instruments that are required to be marked to market as either assets or liabilities on its condensed consolidated balance sheets and measures them at fair value each reporting period. NEP does not utilize hedge accounting for its derivative instruments. All changes in the derivatives' fair value are recognized in interest expense in the condensed consolidated statements of income (loss). At September 30, 2021 and December 31, 2020, the net notional amounts of the interest rate contracts were approximately $7,106 million and $7,088 million, respectively. At September 30, 2021, NEP's AOCI does not include any amounts related to cash flow hedges. Cash flows from the interest rate contracts are reported in cash flows from operating activities in the condensed consolidated statements of cash flows. Fair Value Measurement of Derivative Instruments - 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. NEP uses 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. Certain financial instruments may be valued using multiple inputs including discount rates, counterparty credit ratings and credit enhancements. NEP’s assessment of the significance of any particular input to the fair value measurement requires judgment and may affect the placement of those assets and liabilities 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. Transfers between fair value hierarchy levels occur at the beginning of the period in which the transfer occurred. NEP estimates the fair value of its derivative instruments 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. The primary inputs used in the fair value measurements include the contractual terms of the derivative agreements, current interest rates and credit profiles. The significant inputs for the resulting fair value measurement are market-observable inputs and the measurements are reported as Level 2 in the fair value hierarchy. The tables below present NEP's gross derivative positions, based on the total fair value of each derivative instrument, at September 30, 2021 and December 31, 2020, as required by disclosure rules, as well as the location of the net derivative positions, based on the expected timing of future payments, on NEP's condensed consolidated balance sheets. September 30, 2021 Level 1 Level 2 Level 3 Netting (a) Total (millions) Assets: Interest rate contracts $ — $ 30 $ — $ (30) $ — Liabilities: Interest rate contracts $ — $ 582 $ — $ (30) $ 552 Net fair value by balance sheet line item: Current derivative liabilities $ 23 Noncurrent derivative liabilities 529 Total derivative liabilities $ 552 December 31, 2020 Level 1 Level 2 Level 3 Netting (a) Total (millions) Assets: Interest rate contracts $ — $ 47 $ — $ (47) $ — Liabilities: Interest rate contracts $ — $ 849 $ — $ (47) $ 802 Net fair value by balance sheet line item: Current derivative liabilities $ 20 Noncurrent derivative liabilities 782 Total derivative liabilities $ 802 ____________________ (a) Includes the effect of the contractual ability to settle contracts under master netting arrangements. Financial Statement Impact of Derivative Instruments - Gains (losses) related to NEP's interest rate contracts are recorded in the condensed consolidated financial statements as follows: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (millions) Interest rate contracts: Gains (losses) recognized in interest expense $ 6 $ 131 $ 235 $ (609) Credit-Risk-Related Contingent Features - Certain of NEP's derivative instruments contain credit-related cross-default and material adverse change triggers, none of which contain requirements to maintain certain credit ratings or financial ratios. At September 30, 2021 and December 31, 2020, the aggregate fair value of NEP's derivative instruments with contingent risk features that were in a liability position was approximately $550 million and $769 million, respectively.

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	Variable Interest Entities NEP has identified NEP OpCo, a limited partnership with a general partner and limited partners, as a VIE. NEP has consolidated the results of NEP OpCo and its subsidiaries because of its controlling interest in the general partner of NEP OpCo. At September 30, 2021, NEP owned an approximately 43.0% limited partner interest in NEP OpCo and NEE Equity owned a noncontrolling 57.0% limited partner interest in NEP OpCo (NEE's noncontrolling interest). The assets and liabilities of NEP OpCo as well as the operations of NEP OpCo represent substantially all of NEP's assets and liabilities and its operations. At September 30, 2021, NEP OpCo consolidated 13 VIEs related to certain subsidiaries which have sold differential membership interests in entities which own and operate 23 wind generation facilities as well as one solar facility. These entities are considered VIEs because the holders of the differential membership interests do not have substantive rights over the significant activities of these entities. The assets, primarily property, plant and equipment - net, and liabilities, primarily asset retirement obligation and noncurrent due to related parties, of the VIEs, totaled approximately $5,169 million and $137 million, respectively, at September 30, 2021 and $5,299 million and $224 million, respectively, at December 31, 2020. At September 30, 2021, NEP OpCo also consolidated five VIEs related to the sales of noncontrolling Class B interests in certain subsidiaries (see Note 10 - Noncontrolling Interests) which have ownership interests in and operate wind and solar facilities with a combined net generating capacity of approximately 3,704 MW as well as ownership interests in eight natural gas pipeline assets. These entities are considered VIEs because the holders of the noncontrolling Class B interests do not have substantive rights over the significant activities of these entities. The assets, primarily property, plant and equipment - net and intangible assets - PPAs, and the liabilities, primarily long-term debt, other long-term liabilities and asset retirement obligation, of the VIEs totaled approximately $9,121 million and $1,254 million, respectively, at September 30, 2021 and $9,410 million and $1,502 million, respectively, at December 31, 2020. Certain of these VIEs include four other VIEs related to NEP's ownership interests in Rosmar, Silver State, Meade and Pine Brooke Holdings (see Note 1). In addition, certain of these VIEs contain entities which have sold differential membership interests and approximately $2,621 million and $2,694 million of assets and $64 million and $153 million of liabilities are also included in the disclosure of the VIEs related to differential membership interests at September 30, 2021 and December 31, 2020, respectively. NEP has an indirect equity method investment in three NEER solar projects with a total generating capacity of 277 MW. Through a series of transactions, a subsidiary of NEP issued 1,000,000 NEP OpCo Class B Units, Series 1 and 1,000,000 NEP OpCo Class B Units, Series 2, to NEER for approximately 50% of the ownership interests in the three solar projects (non-economic ownership interests). NEER, as holder of the NEP OpCo Class B Units, will retain 100% of the economic rights in the projects to which the respective Class B Units relate, including the right to all distributions paid by the project subsidiaries that own the projects to NEP OpCo. NEER has agreed to indemnify NEP against all risks relating to NEP’s ownership of the projects until NEER offers to sell economic interests to NEP and NEP accepts such offer, if NEP chooses to do so. NEER has also agreed to continue to manage the operation of the projects at its own cost, and to contribute to the projects any capital necessary for the operation of the projects, until NEER offers to sell economic interests to NEP and NEP accepts such offer. At September 30, 2021 and December 31, 2020, NEP's equity method investment related to the non-economic ownership interests of approximately $138 million and $10 million, respectively, is reflected as noncurrent other assets and, at December 31, 2020, $21 million is reflected as noncurrent other liabilities on the condensed consolidated balance sheets. During the three months ended September 30, 2021, a subsidiary of NEER contributed certain assets to one of the three NEER solar projects discussed above which resulted in an increase in noncurrent other assets and a corresponding increase in noncontrolling interests on NEP's condensed consolidated balance sheets at September 30, 2021. All equity in earnings of the non-economic ownership interests is allocated to net income attributable to noncontrolling interests. NEP is not the primary beneficiary and therefore does not consolidate these entities because it does not control any of the ongoing activities of these entities, was not involved in the initial design of these entities and does not have a controlling interest in these entities.

Debt

Debt	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Debt	Debt Significant long-term debt issuances and borrowings by subsidiaries of NEP during the nine months ended September 30, 2021 were as follows: Date Issued/Borrowed Debt Issuances/Borrowings Interest Principal Maturity (millions) February 2021 NEP OpCo senior secured revolving credit facility Variable (a) $ 90 (b) 2026 January 2021 - September 2021 Senior secured limited-recourse debt Variable (a) $ 34 (c) 2026 June 2021 Senior unsecured convertible notes 0% $ 500 (d) 2024 ———————————— (a) Variable rate is based on an underlying index plus a margin. (b) During the nine months ended September 30, 2021, all of the outstanding borrowings under the NEP OpCo credit facility were repaid. At September 30, 2021, approximately $116 million of letters of credit were issued under the NEP OpCo credit facility. In October 2021, $305 million was borrowed under the NEP OpCo credit facility and approximately $12 million of such borrowings have a maturity date in 2025. (c) At September 30, 2021, approximately $868 million of borrowings were outstanding under the existing credit agreement of the Meade purchaser and Pipeline Investment Holdings, LLC (Meade credit agreement). (d) See additional discussion of the 2021 convertible notes below. In February 2021, NEP OpCo and its direct subsidiary entered into an amendment of their existing revolving credit facility. The amendments to the revolving credit facility include, among other things, an extension of the maturity from February 2025 to February 2026 for essentially all of the NEP OpCo credit facility. In June 2021, NEP issued $500 million principal amount of senior unsecured convertible notes (2021 convertible notes). The 2021 convertible notes are unsecured obligations of NEP and are absolutely and unconditionally guaranteed, on a senior unsecured basis, by NEP OpCo. A holder may convert all or a portion of its 2021 convertible notes in accordance with the related indenture. Upon conversion of the 2021 convertible notes, NEP will pay cash up to the aggregate principal amount of the notes to be converted and pay or deliver, as the case may be, cash, NEP common units or a combination of cash and common units, at NEP's election, in respect of the remainder, if any, of NEP's conversion obligation in excess of the aggregate principal amount of the notes being converted. At September 30, 2021, the initial conversion rate, which is subject to certain adjustments, was 11.0492 NEP common units per $1,000 of the 2021 convertible notes, which is equivalent to an initial conversion price of approximately $90.5043 per NEP common unit. The conversion rate is subject to adjustment in certain circumstances, as set forth in the related indenture. Upon the occurrence of a fundamental change (as defined in the related indenture), holders of the 2021 convertible notes may require NEP to repurchase all or a portion of their convertible notes for cash in an amount equal to the principal amount of the 2021 convertible notes to be repurchased, plus accrued and unpaid special interest, if any. The 2021 convertible notes are not redeemable at NEP’s option prior to maturity. In connection with the issuance of the 2021 convertible notes, NEP entered into a registration rights agreement pursuant to which, among other things, NEP has agreed to file a shelf registration statement with the SEC and use its commercially reasonable efforts to cause such registration statement to become effective on or prior to June 17, 2022, covering resales of NEP common units, if any, issuable upon a conversion of the 2021 convertible notes. NEP entered into capped call transactions (2021 capped call) in connection with the issuance of the 2021 convertible notes. Under the 2021 capped call, NEP purchased capped call options with an initial strike price of $90.5043 and an initial cap price of $113.1300. The 2021 capped call was purchased for approximately $31 million, which was recorded as a reduction to common units equity on NEP's condensed consolidated balance sheets. If, upon conversion of the 2021 convertible notes, the price per NEP common unit during the relevant valuation period is above the strike price, there would generally be a payment to NEP (if NEP elects to cash settle) or an offset of potential dilution to NEP's common units up to the cap price (if NEP elects to settle in NEP common units). NEP OpCo and its subsidiaries' secured long-term debt agreements are secured by liens on certain assets and contain provisions which, under certain conditions, could restrict the payment of distributions or related party fee payments. At September 30, 2021, NEP and its subsidiaries were in compliance with all financial debt covenants under their financings.

Equity

Equity	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Equity	Equity Distributions - On October 19, 2021, the board of directors of NEP authorized a distribution of $0.6850 per common unit payable on November 12, 2021 to its common unitholders of record on November 4, 2021. Earnings (Loss) Per Unit - Diluted earnings (loss) per unit is based on the weighted-average number of common units and potential common units outstanding during the period, including the dilutive effect of convertible notes and preferred units. The dilutive effect of the 2021 convertible notes, the 2020 convertible notes, and for the prior year periods, the 2017 convertible notes and the preferred units, is computed using the if-converted method. The reconciliation of NEP's basic and diluted earnings (loss) per unit for the three and nine months ended September 30, 2021 and 2020 is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (millions, except per unit amounts) Numerator: Net income (loss) attributable to NEP – basic $ 18 $ 56 $ 146 $ (119) Adjustments for 2017 convertible notes and preferred units (a) — 2 — — Net income (loss) attributable to NEP used to compute diluted earnings (loss) per unit $ 18 $ 58 $ 146 $ (119) Denominator: Weighted-average number of common units outstanding – basic 76.6 67.7 76.3 66.2 Effect of dilutive convertible notes and preferred units (a) — 8.2 — — Weighted-average number of common units outstanding and assumed conversions 76.6 75.9 76.3 66.2 Earnings (loss) per unit attributable to NEP: Basic $ 0.24 $ 0.83 $ 1.92 $ (1.80) Assuming dilution $ 0.24 $ 0.76 $ 1.92 $ (1.80) ———————————— (a) Due to the net losses incurred during the nine months ended September 30, 2020, the weighted-average number of common units issuable pursuant to the 2017 convertible notes and preferred units totaling approximately 9.6 million were not included in the calculation of diluted loss per unit due to their antidilutive effect. ATM Program - During the nine months ended September 30, 2021, NEP issued approximately 0.7 million common units under its at-the-market equity issuance program (ATM program), which expired in July 2021, for gross proceeds of approximately $50 million. During the three months ended September 30, 2021 and the three and nine months ended September 30, 2020, NEP did not issue any common units under the ATM program. Fees related to the ATM program totaled less than $1 million during the nine months ended September 30, 2021. Common Unit Issuances - During the three and nine months ended September 30, 2020, NEP issued 1.8 million NEP common units upon the conversion of preferred units on a one-for-one basis and issued approximately 5.7 million NEP common units upon the conversion of $300 million of the 2017 convertible notes. In October 2020, NEP received approximately $30 million in cash related to the unwinding of a capped call transaction that was entered into in connection with the issuance of the 2017 convertible notes and NEP issued approximately 1.2 million NEP common units upon the conversion of preferred units on a one-for-one basis. Class B Noncontrolling Interests - In May 2021, NEP and two of its indirect subsidiaries, Genesis Solar Holdings, LLC (Genesis Holdings) and Genesis Solar Funding, LLC (Genesis Funding), entered into an amendment of the existing membership interest purchase agreement (as amended, membership purchase agreement) with certain investors. The amendments to the membership purchase agreement included, among other things, an increase in the aggregate Class B purchase price to be paid by the investors from approximately $1,095 million to $1,243 million, with the incremental amount entitled to earn the same pre-tax annual return as the existing amounts. In June 2021, the remaining Class B membership interests were sold to the investors in connection with their additional funding of approximately $493 million of the Class B purchase price (final funding). In connection with the amendments to the membership purchase agreement, an amendment to the third amended and restated limited liability company agreement of Genesis Holdings (as amended, the LLC agreement) was also entered into in May 2021 between Genesis Holdings and the investors, amending certain provisions of the LLC agreement. Under the LLC agreement, NEP, through its indirect ownership of Genesis Funding, generally receives 75% of Genesis Holdings’ cash distributions for the first ten years after the initial funding in December 2020 (initial funding), and the investors receive 25%, subject to certain adjustments, except that, until the final funding, NEP received approximately 83% of Genesis Holdings’ cash distributions and the investors received 17%. From the fifth to the tenth anniversary of the initial funding, NEP has the option (the buyout right), subject to certain limitations, to periodically purchase the Class B membership interests in Genesis Holdings at a buyout price that implies a fixed pre-tax annual return of approximately 6.76% to the investors (inclusive of all prior distributions). If exercised, NEP has the right to pay a maximum of 100% of the buyout price in NEP non-voting common units, issued at the then-current market price of NEP common units or cash (or any combination thereof), subject to conditions and limitations set forth in the LLC agreement. Under the LLC agreement, for all distribution dates after the tenth anniversary of the initial funding, or if certain minimum purchases under the buyout right have not occurred by any distribution date following June 18, 2026, then, in any such case, the investors' allocation of Genesis Holdings’ cash distributions payable with respect to Class B membership interests that the investors still own will increase to 99%, subject to certain adjustments. In October 2021, NEP and two of its indirect subsidiaries entered into a membership interest purchase agreement with an investor. The investor has agreed to pay a total of approximately $824 million for 100% of the noncontrolling Class B membership interests of NEP Renewables III, LLC subject to certain closing conditions set forth in the membership purchase agreement. See Part II – Item 5 for further discussion. Accumulated Other Comprehensive Income (Loss) - During the nine months ended September 30, 2021 and 2020, NEP recognized approximately $1 million of other comprehensive income related to equity method investees. During the three months ended September 30, 2021 and 2020, NEP did not recognize any other comprehensive income (loss). At September 30, 2021 and 2020, NEP's accumulated other comprehensive loss totaled approximately $19 million and $21 million, respectively, of which $11 million and $13 million, respectively, was attributable to noncontrolling interest and $8 million and $8 million, respectively, was attributable to NEP.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Each project entered into O&M agreements and ASAs with subsidiaries of NEER whereby the projects pay a certain annual fee plus actual costs incurred in connection with certain O&M and administrative services performed under these agreements. These services are reflected as operations and maintenance in the condensed consolidated statements of income (loss). Additionally, certain NEP subsidiaries pay affiliates for transmission and retail power services which are reflected as operations and maintenance in the condensed consolidated statements of income (loss). Certain projects have also entered into various types of agreements including those related to shared facilities and transmission lines, transmission line easements, technical support and construction coordination with subsidiaries of NEER whereby certain fees or cost reimbursements are paid to, or received by, certain subsidiaries of NEER. Management Services Agreement - Under the MSA, an indirect wholly owned subsidiary of NEE provides operational, management and administrative services to NEP, including managing NEP’s day-to-day affairs and providing individuals to act as NEP’s executive officers and directors, in addition to those services that are provided under the existing O&M agreements and ASAs described above between NEER subsidiaries and NEP subsidiaries. NEP OpCo pays NEE an annual management fee equal to the greater of 1% of the sum of NEP OpCo’s net income plus interest expense, income tax expense and depreciation and amortization expense less certain non-cash, non-recurring items for the most recently ended fiscal year and $4 million (as adjusted for inflation beginning in 2016), which is paid in quarterly installments with an additional payment each January to the extent 1% of the sum of NEP OpCo’s net income plus interest expense, income tax expense and depreciation and amortization expense less certain non-cash, non-recurring items for the preceding fiscal year exceeds $4 million (as adjusted for inflation beginning in 2016). NEP OpCo also makes certain payments to NEE based on the achievement by NEP OpCo of certain target quarterly distribution levels to its unitholders. NEP’s O&M expenses for the three and nine months ended September 30, 2021 include approximately $36 million and $102 million, respectively, and for the three and nine months ended September 30, 2020 include $29 million and $82 million, respectively, related to the MSA. Cash Sweep and Credit Support Agreement - NEP OpCo is a party to the CSCS agreement with NEER under which NEER and certain of its affiliates provide credit support in the form of letters of credit and guarantees to satisfy NEP’s subsidiaries’ contractual obligations. NEP OpCo pays NEER an annual credit support fee based on the level and cost of the credit support provided, payable in quarterly installments. NEP’s O&M expenses for the three and nine months ended September 30, 2021 include approximately $1 million and $4 million, respectively, and for the three and nine months ended September 30, 2020 include $1 million and $4 million, respectively, related to the CSCS agreement. NEER and certain of its affiliates may withdraw funds (Project Sweeps) from NEP OpCo under the CSCS agreement, or its subsidiaries in connection with certain long-term debt agreements, and hold those funds in accounts belonging to NEER or its affiliates to the extent the funds are not required to pay project costs or otherwise required to be maintained by NEP's subsidiaries. NEER and its affiliates may keep the funds until the financing agreements permit distributions to be made, or, in the case of NEP OpCo, until such funds are required to make distributions or to pay expenses or other operating costs or NEP OpCo otherwise demands the return of such funds. If NEER or its affiliates fail to return withdrawn funds when required by NEP's subsidiaries’ financing agreements, the lenders will be entitled to draw on any credit support provided by NEER or its affiliates in the amount of such withdrawn funds. If NEER or one of its affiliates realizes any earnings on the withdrawn funds prior to the return of such funds, it will be permitted to retain those earnings. At September 30, 2021 and December 31, 2020, the cash sweep amounts held in accounts belonging to NEER or its affiliates were approximately $306 million and $10 million, respectively, and are included in due from related parties on the condensed consolidated balance sheets. Guarantees and Letters of Credit Entered into by Related Parties - Certain PPAs include requirements of the project entities to meet certain performance obligations. NEECH or NEER has provided letters of credit or guarantees for certain of these performance obligations and payment of any obligations from the transactions contemplated by the PPAs . In addition, certain financing agreements require cash and cash equivalents to be reserved for various purposes . In accordance with the terms of these financing agreements, guarantees from NEECH have been substituted in place of these cash and cash equivalents reserve requirements. Also, under certain financing agreements, indemnifications have been provided by NEECH. In addition, certain interconnection agreements and site certificates require letters of credit or a surety bond to secure certain payment or restoration obligations related to those agreements. NEECH also guarantees the Project Sweep amounts held in accounts belonging to NEER, as described above. At September 30, 2021, NEECH or NEER guaranteed or provided indemnifications, letters of credit or surety bonds totaling approximately $587 million related to these obligations. Due to Related Parties - Noncurrent amounts due to related parties on the condensed consolidated balance sheets primarily represent amounts owed by certain of NEP's wind projects to NEER to refund NEER for certain transmission costs paid on behalf of the wind projects. Amounts will be paid to NEER as the wind projects receive payments from third parties for related notes receivable recorded in noncurrent other assets on the condensed consolidated balance sheets. Transportation and Fuel Management Agreements - A subsidiary of NEP assigned to a subsidiary of NEER certain gas commodity agreements in exchange for entering into transportation agreements and a fuel management agreement whereby the benefits of the gas commodity agreements (net of transportation paid to the NEP subsidiary) are passed back to the NEP subsidiary. NEP recognized revenues related to the transportation and fuel management agreements of approximately $4 million and $39 million during the three and nine months ended September 30, 2021, respectively, and $2 million and $12 million during the three and nine months ended September 30, 2020, respectively. The increase in the recognized revenues for the nine months ended September 30, 2021 primarily relates to higher demand and the related impact on natural gas prices during extreme winter weather experienced primarily in Texas during February 2021 (February weather event). At September 30, 2021, current due from related parties on the condensed consolidated balance sheets includes approximately $13 million related to the benefits of the gas commodity agreements.

Summary of Significant Accounti

Summary of Significant Accounting and Reporting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting and Reporting Policies	. Summary of Significant Accounting and Reporting Policies Restricted Cash - A t September 30, 2021 and December 31, 2020 , NEP had approximately $4 million and $4 million, respectively, of restricted cash included in current other assets on NEP's condensed consolidated balance sheets. Restricted cash at September 30, 2021 and December 31, 2020 is primarily related to collateral deposits from a counterparty. Restricted cash reported as current assets are recorded as such based on the anticipated use of these funds. Property, Plant and Equipment - Property, plant and equipment consists of the following: September 30, 2021 December 31, 2020 (millions) Property, plant and equipment, gross $ 8,792 $ 8,606 Accumulated depreciation (1,633) (1,443) Property, plant and equipment - net $ 7,159 $ 7,163 Noncontrolling Interests - At September 30, 2021, the Class B noncontrolling ownership interests (the Class B noncontrolling ownership interests in NEP Renewables, NEP Renewables II, NEP Pipelines, STX Midstream and Genesis Holdings owned by third parties), the differential membership interests, NEE's approximately 57.0% noncontrolling limited partner interest in NEP OpCo and NEER's approximately 50% noncontrolling ownership interest in Silver State, as well as a third party's 10% interest in one of the Texas pipelines and the non-economic ownership interests are reflected as noncontrolling interests on the condensed consolidated balance sheets. The impact of the net income (loss) attributable to the differential membership interests and the Class B noncontrolling ownership interests are allocated to NEE Equity's noncontrolling ownership interest and the net income attributable to NEP based on the respective ownership percentage of NEP OpCo. Details of the activity in noncontrolling interests are below: Class B Noncontrolling Ownership Interests Differential Membership Interests Noncontrolling Ownership Interests in NEP OpCo and Silver State Other Noncontrolling Ownership Interests Total Noncontrolling (millions) Three months ended September 30, 2021 Balances, June 30, 2021 $ 4,147 $ 1,675 $ 81 $ 197 $ 6,100 Net income (loss) attributable to noncontrolling interests 79 (66) 49 14 76 Related party distributions — — (87) (7) (94) Changes in non-economic ownership interests — — — 6 6 Differential membership investment contributions, net of distributions — 24 — — 24 Payments to Class B noncontrolling interest investors (28) — — — (28) Other — — 1 (1) — Balances, September 30, 2021 $ 4,198 $ 1,633 $ 44 $ 209 $ 6,084 Nine months ended September 30, 2021 Balances, December 31, 2020 $ 3,550 $ 1,759 $ (14) $ 58 $ 5,353 Sale of Class B noncontrolling interest - net 493 — — — 493 Related party note receivable — — 1 — 1 Net income (loss) attributable to noncontrolling interests 217 (220) 288 32 317 Other comprehensive income — — 1 — 1 Related party distributions — — (233) (10) (243) Changes in non-economic ownership interests — — — 130 130 Differential membership investment contributions, net of distributions — 47 — — 47 Payments to Class B noncontrolling interest investors (63) — — — (63) Sale of differential membership interest — 48 — — 48 Other 1 (1) 1 (1) — Balances, September 30, 2021 $ 4,198 $ 1,633 $ 44 $ 209 $ 6,084 Class B Noncontrolling Ownership Interests Differential Membership Interests Noncontrolling Ownership Interests in NEP OpCo and Silver State Other Noncontrolling Ownership Interests Total Noncontrolling (millions) Three months ended September 30, 2020 Balances, June 30, 2020 $ 2,712 $ 1,681 $ (97) $ 53 $ 4,349 Net income (loss) attributable to noncontrolling interests 55 (56) 126 13 138 Related party contributions — — — 1 1 Related party distributions — — (79) (2) (81) Changes in non-economic ownership interests — — — (7) (7) Differential membership investment contributions, net of distributions — 39 — — 39 Payments to Class B noncontrolling interest investors (13) — — — (13) Other — (1) — — (1) Balances, September 30, 2020 $ 2,754 $ 1,663 $ (50) $ 58 $ 4,425 Nine months ended September 30, 2020 Balances, December 31, 2019 $ 2,628 $ 1,798 $ 389 $ 68 $ 4,883 Related party note receivable — — 1 — 1 Net income (loss) attributable to noncontrolling interests 160 (205) (236) (3) (284) Other comprehensive income — — 1 — 1 Related party contributions — — — 6 6 Related party distributions — — (206) (6) (212) Changes in non-economic ownership interests — — — (7) (7) Differential membership investment contributions, net of distributions — 71 — — 71 Payments to Class B noncontrolling interest investors (34) — — — (34) Other — (1) 1 — — Balances, September 30, 2020 $ 2,754 $ 1,663 $ (50) $ 58 $ 4,425 Leases - During the nine months ended September 30, 2021, a power sales agreement, accounted for as a sales-type lease, commenced related to the Wilmot battery storage facility that sells its electric output to a third party under the power sales agreement which provides the customer with the ability to dispatch the facility. For sales-type leases, the book value of the leased asset is removed from the balance sheet and a net investment in sales-type lease is recognized based on fixed payments under the contract and the residual value of the asset being leased. Interest income associated with the sales-type lease is included in operating revenues in NEP’s condensed consolidated statements of income (loss). At September 30, 2021, the net investment in the sales-type lease was approximately $16 million and is included in current and noncurrent other assets on NEP’s condensed consolidated balance sheets. At September 30, 2021, the power sales agreement has an expiration date of 2041 and NEP expects to receive approximately $29 million of lease payments over the remaining term of the power sales agreement with no one year being material. Convertible Investment Tax Credits - At December 31, 2020, other receivables on NEP's condensed consolidated balance sheets included a convertible investment tax credit (CITC) receivable of approximately $124 million associated with one of NEP's solar projects. Additionally, at December 31, 2020, corresponding liabilities of approximately $100 million and $12 million related to the CITC payments required to be paid to the third party who constructed the project were reflected as accounts payable and accrued expenses and current other liabilities, respectively, and $12 million of CITC payments to be paid to NEER were reflected as current due to related parties on NEP's condensed consolidated balance sheets. After a settlement agreement related to the CITC receivable was reached in the second quarter of 2021, the CITC receivable and related payments to NEER and the third party were paid during the three months ended September 30, 2021. Reference Rate Reform – In March 2020, the Financial Accounting Standards Board (FASB) issued an accounting standards update which provides certain options to apply GAAP guidance on contract modifications and hedge accounting as companies transition from the London Inter-Bank Offered Rate (LIBOR) and other interbank offered rates to alternative reference rates. NEP’s contracts that reference LIBOR or other interbank offered rates mainly relate to debt and derivative instruments. The standards update was effective upon issuance but can be applied prospectively through December 31, 2022. As agreements that reference LIBOR or other interbank offered rates as an interest rate benchmark are amended, NEP evaluates whether to apply the options provided by the standards update with regard to eligible contract modifications.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Development, Engineering and Construction Commitments - At September 30, 2021, an indirect subsidiary of NEP had a funding commitment related to a pipeline expansion project. As of September 30, 2021, the NEP subsidiary had invested approximately $69 million related to the expansion project which is reflected as investments in equity method investees on the condensed consolidated balance sheets. As of September 30, 2021, the NEP subsidiary has a remaining commitment of approximately $11 million.

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Schedule of Identifiable Assets Acquired and Liabilities Assumed	The following table summarizes the preliminary amounts recognized by NEP for the estimated fair value of assets acquired and liabilities assumed in the 2021 third-party acquisition: (millions) Total consideration transferred $ 815 Identifiable assets acquired and liabilities assumed Cash $ 18 Accounts receivable, inventory and prepaid expenses 14 Property, plant and equipment – net 191 Intangible assets – PPAs (a) 432 Goodwill 177 Other noncurrent assets 1 Accounts payable, accrued expenses and other current liabilities (5) Other noncurrent liabilities (13) Total net identifiable assets, at fair value $ 815 ____________________ (a) Intangible assets - PPAs are amortized into operating revenues on a straight-line basis over the remaining contract terms of the related PPAs. At September 30, 2021, amortization of the intangible assets - PPAs is expected to be approximately $12 million in 2021 and $35 million in each of the next four years.

Non-Derivative Fair Value Mea_2

Non-Derivative Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Schedule of financial assets and liabilities and other fair value measurements on a recurring basis	NEP’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, 2021 December 31, 2020 Level 1 Level 2 Total Level 1 Level 2 Total (millions) Assets: Cash equivalents $ 1 $ — $ 1 $ 2 $ — $ 2 Total assets $ 1 $ — $ 1 $ 2 $ — $ 2
Schedule of other financial instrument, carrying amounts and estimated fair values	The carrying amounts and estimated fair values of other financial instruments recorded at other than fair value are as follows: September 30, 2021 December 31, 2020 Carrying Fair Carrying Fair (millions) Long-term debt, including current maturities (a) $ 3,983 $ 4,135 $ 3,388 $ 3,529 ____________________ (a)

Derivative Instruments and He_2

Derivative Instruments and Hedging Activity (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of the fair values included in balance sheets	The tables below present NEP's gross derivative positions, based on the total fair value of each derivative instrument, at September 30, 2021 and December 31, 2020, as required by disclosure rules, as well as the location of the net derivative positions, based on the expected timing of future payments, on NEP's condensed consolidated balance sheets. September 30, 2021 Level 1 Level 2 Level 3 Netting (a) Total (millions) Assets: Interest rate contracts $ — $ 30 $ — $ (30) $ — Liabilities: Interest rate contracts $ — $ 582 $ — $ (30) $ 552 Net fair value by balance sheet line item: Current derivative liabilities $ 23 Noncurrent derivative liabilities 529 Total derivative liabilities $ 552 December 31, 2020 Level 1 Level 2 Level 3 Netting (a) Total (millions) Assets: Interest rate contracts $ — $ 47 $ — $ (47) $ — Liabilities: Interest rate contracts $ — $ 849 $ — $ (47) $ 802 Net fair value by balance sheet line item: Current derivative liabilities $ 20 Noncurrent derivative liabilities 782 Total derivative liabilities $ 802 ____________________ (a) Includes the effect of the contractual ability to settle contracts under master netting arrangements.
Schedule of gains (losses) related to interest rate contracts	Gains (losses) related to NEP's interest rate contracts are recorded in the condensed consolidated financial statements as follows: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (millions) Interest rate contracts: Gains (losses) recognized in interest expense $ 6 $ 131 $ 235 $ (609)

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Schedule of Debt	Significant long-term debt issuances and borrowings by subsidiaries of NEP during the nine months ended September 30, 2021 were as follows: Date Issued/Borrowed Debt Issuances/Borrowings Interest Principal Maturity (millions) February 2021 NEP OpCo senior secured revolving credit facility Variable (a) $ 90 (b) 2026 January 2021 - September 2021 Senior secured limited-recourse debt Variable (a) $ 34 (c) 2026 June 2021 Senior unsecured convertible notes 0% $ 500 (d) 2024 ———————————— (a) Variable rate is based on an underlying index plus a margin. (b) During the nine months ended September 30, 2021, all of the outstanding borrowings under the NEP OpCo credit facility were repaid. At September 30, 2021, approximately $116 million of letters of credit were issued under the NEP OpCo credit facility. In October 2021, $305 million was borrowed under the NEP OpCo credit facility and approximately $12 million of such borrowings have a maturity date in 2025. (c) At September 30, 2021, approximately $868 million of borrowings were outstanding under the existing credit agreement of the Meade purchaser and Pipeline Investment Holdings, LLC (Meade credit agreement). (d) See additional discussion of the 2021 convertible notes below.

Equity (Tables)

Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The reconciliation of NEP's basic and diluted earnings (loss) per unit for the three and nine months ended September 30, 2021 and 2020 is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (millions, except per unit amounts) Numerator: Net income (loss) attributable to NEP – basic $ 18 $ 56 $ 146 $ (119) Adjustments for 2017 convertible notes and preferred units (a) — 2 — — Net income (loss) attributable to NEP used to compute diluted earnings (loss) per unit $ 18 $ 58 $ 146 $ (119) Denominator: Weighted-average number of common units outstanding – basic 76.6 67.7 76.3 66.2 Effect of dilutive convertible notes and preferred units (a) — 8.2 — — Weighted-average number of common units outstanding and assumed conversions 76.6 75.9 76.3 66.2 Earnings (loss) per unit attributable to NEP: Basic $ 0.24 $ 0.83 $ 1.92 $ (1.80) Assuming dilution $ 0.24 $ 0.76 $ 1.92 $ (1.80) ———————————— (a) Due to the net losses incurred during the nine months ended September 30, 2020, the weighted-average number of common units issuable pursuant to the 2017 convertible notes and preferred units totaling approximately 9.6 million were not included in the calculation of diluted loss per unit due to their antidilutive effect.

Summary of Significant Accoun_2

Summary of Significant Accounting and Reporting Policies (Tables)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment - Property, plant and equipment consists of the following: September 30, 2021 December 31, 2020 (millions) Property, plant and equipment, gross $ 8,792 $ 8,606 Accumulated depreciation (1,633) (1,443) Property, plant and equipment - net $ 7,159 $ 7,163
Non-controlling Interests [Member]
Noncontrolling Interest [Line Items]
Schedule of Noncontrolling Interest	Details of the activity in noncontrolling interests are below: Class B Noncontrolling Ownership Interests Differential Membership Interests Noncontrolling Ownership Interests in NEP OpCo and Silver State Other Noncontrolling Ownership Interests Total Noncontrolling (millions) Three months ended September 30, 2021 Balances, June 30, 2021 $ 4,147 $ 1,675 $ 81 $ 197 $ 6,100 Net income (loss) attributable to noncontrolling interests 79 (66) 49 14 76 Related party distributions — — (87) (7) (94) Changes in non-economic ownership interests — — — 6 6 Differential membership investment contributions, net of distributions — 24 — — 24 Payments to Class B noncontrolling interest investors (28) — — — (28) Other — — 1 (1) — Balances, September 30, 2021 $ 4,198 $ 1,633 $ 44 $ 209 $ 6,084 Nine months ended September 30, 2021 Balances, December 31, 2020 $ 3,550 $ 1,759 $ (14) $ 58 $ 5,353 Sale of Class B noncontrolling interest - net 493 — — — 493 Related party note receivable — — 1 — 1 Net income (loss) attributable to noncontrolling interests 217 (220) 288 32 317 Other comprehensive income — — 1 — 1 Related party distributions — — (233) (10) (243) Changes in non-economic ownership interests — — — 130 130 Differential membership investment contributions, net of distributions — 47 — — 47 Payments to Class B noncontrolling interest investors (63) — — — (63) Sale of differential membership interest — 48 — — 48 Other 1 (1) 1 (1) — Balances, September 30, 2021 $ 4,198 $ 1,633 $ 44 $ 209 $ 6,084 Class B Noncontrolling Ownership Interests Differential Membership Interests Noncontrolling Ownership Interests in NEP OpCo and Silver State Other Noncontrolling Ownership Interests Total Noncontrolling (millions) Three months ended September 30, 2020 Balances, June 30, 2020 $ 2,712 $ 1,681 $ (97) $ 53 $ 4,349 Net income (loss) attributable to noncontrolling interests 55 (56) 126 13 138 Related party contributions — — — 1 1 Related party distributions — — (79) (2) (81) Changes in non-economic ownership interests — — — (7) (7) Differential membership investment contributions, net of distributions — 39 — — 39 Payments to Class B noncontrolling interest investors (13) — — — (13) Other — (1) — — (1) Balances, September 30, 2020 $ 2,754 $ 1,663 $ (50) $ 58 $ 4,425 Nine months ended September 30, 2020 Balances, December 31, 2019 $ 2,628 $ 1,798 $ 389 $ 68 $ 4,883 Related party note receivable — — 1 — 1 Net income (loss) attributable to noncontrolling interests 160 (205) (236) (3) (284) Other comprehensive income — — 1 — 1 Related party contributions — — — 6 6 Related party distributions — — (206) (6) (212) Changes in non-economic ownership interests — — — (7) (7) Differential membership investment contributions, net of distributions — 71 — — 71 Payments to Class B noncontrolling interest investors (34) — — — (34) Other — (1) 1 — — Balances, September 30, 2020 $ 2,754 $ 1,663 $ (50) $ 58 $ 4,425

Acquisitions - Narrative (Detai

Acquisitions - Narrative (Details) $ in Millions	1 Months Ended		9 Months Ended
	Oct. 31, 2021USD ($)wind_generation_facilityMW	Aug. 31, 2021USD ($)MW	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2020MW
Business Acquisition [Line Items]
Proceeds from differential membership investors | $			$ 74	$ 94
Soldier Creek Wind, LLC | Pine Brooke Class A Holdings, LLC
Business Acquisition [Line Items]
Generation facility capacity (mw)					300
Wilmot Energy Center, LLC
Business Acquisition [Line Items]
Membership interests acquired					100.00%
Generation facility capacity (mw)					100
Renewable Energy Assets, Power Generation Capacity					30
Pine Brooke Class A Holdings, LLC
Business Acquisition [Line Items]
Membership interests acquired					100.00%
Pine Brooke Class A Holdings, LLC | Pine Brooke Class A Holdings, LLC
Business Acquisition [Line Items]
Noncontrolling ownership interest					40.00%
Ponderosa Wind, LLC | Pine Brooke Class A Holdings, LLC
Business Acquisition [Line Items]
Generation facility capacity (mw)					200
Blue Summit III Wind | Pine Brooke Class A Holdings, LLC
Business Acquisition [Line Items]
Generation facility capacity (mw)					200
Saint Solar, LLC | Pine Brooke Class A Holdings, LLC
Business Acquisition [Line Items]
Generation facility capacity (mw)					100
Taylor Creek Solar, LLC | Pine Brooke Class A Holdings, LLC
Business Acquisition [Line Items]
Generation facility capacity (mw)					75
Harmony Florida Solar, LLC | Pine Brooke Class A Holdings, LLC
Business Acquisition [Line Items]
Generation facility capacity (mw)					75
Sanford Airport Solar, LLC | Pine Brooke Class A Holdings, LLC
Business Acquisition [Line Items]
Generation facility capacity (mw)					49
Highview Power Holdings, LLC | Indirect Subsidiary
Business Acquisition [Line Items]
Generation facility capacity (mw)		150
Brookfield Windstar Holding, LLC | Indirect Subsidiary
Business Acquisition [Line Items]
Generation facility capacity (mw)		120
Brookfield Coram Wind Development, LLC | Indirect Subsidiary
Business Acquisition [Line Items]
Generation facility capacity (mw)		22
BAIF Granite Holdings, LLC | Indirect Subsidiary
Business Acquisition [Line Items]
Generation facility capacity (mw)		99
2021 Period To Date Acquisitions
Business Acquisition [Line Items]
Acquisition related costs | $			$ 11
2021 Third-Party Acquisition
Business Acquisition [Line Items]
Membership interests acquired		100.00%
Purchase price | $		$ 815
Purchase price, excluding closing adjustments | $		733
Closing adjustments, pre-acquisition debt and make whole costs | $		55
Closing adjustments, working capital | $		27
Working capital, related cash payment | $		$ 18
Goodwill, tax deductible amount, period to be recognized		15 years
Indirect Subsidiary, October 2021 Wind And Solar Generation Acquisition One | Subsequent Event [Member]
Business Acquisition [Line Items]
Generation facility capacity (mw)	589
Assumption of Noncontrolling Interest | $	$ 270
Proceeds from differential membership investors | $	563
Proceeds from differential membership investors, working capital | $	$ 26
HW CA Holdings, LLC | Indirect Subsidiary | Subsequent Event [Member]
Business Acquisition [Line Items]
Membership interests acquired	100.00%
Generation facility capacity (mw)	162
Dogwood Wind Holdings, LLC | Indirect Subsidiary | Subsequent Event [Member]
Business Acquisition [Line Items]
Membership interests acquired	100.00%
Generation facility capacity (mw)	300
Number of generation facilities | wind_generation_facility	2
Southwest Solar Holdings | Indirect Subsidiary | Subsequent Event [Member]
Business Acquisition [Line Items]
Membership interests acquired	100.00%
Generation facility capacity (mw)	5
Shaw Creek Solar Holdings | Indirect Subsidiary | Subsequent Event [Member]
Business Acquisition [Line Items]
Membership interests acquired	33.30%
Generation facility capacity (mw)	75
Nutmed Solar Holdings | Indirect Subsidiary | Subsequent Event [Member]
Business Acquisition [Line Items]
Membership interests acquired	33.30%
Generation facility capacity (mw)	20
Solar Holdings Portfolio Twelve, LLC | Indirect Subsidiary | Subsequent Event [Member]
Business Acquisition [Line Items]
Membership interests acquired	100.00%
Solar Holdings Portfolio Twelve, LLC | Solar Holdings Portfolio Twelve, LLC | Indirect Subsidiary | Subsequent Event [Member]
Business Acquisition [Line Items]
Noncontrolling ownership interest	33.30%
Westside Solar | Solar Holdings Portfolio Twelve, LLC | Subsequent Event [Member]
Business Acquisition [Line Items]
Generation facility capacity (mw)	40
Whitney Point Solar | Solar Holdings Portfolio Twelve, LLC | Subsequent Event [Member]
Business Acquisition [Line Items]
Generation facility capacity (mw)	40
DG Portfolio 2019 Portfolio | Solar Holdings Portfolio Twelve, LLC | Subsequent Event [Member]
Business Acquisition [Line Items]
Generation facility capacity (mw)	217
DG Waipio Portfolio | Solar Holdings Portfolio Twelve, LLC | Subsequent Event [Member]
Business Acquisition [Line Items]
Generation facility capacity (mw)	13
Indirect Subsidiary, Coram II Acquisition | Forecast [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Cash consideration, gross | $	$ 130
Business acquisition, assumption of debt | $	$ 150
Indirect Subsidiary, Coram II Acquisition | Indirect Subsidiary | Subsequent Event [Member]
Business Acquisition [Line Items]
Generation facility capacity (mw)	102
Indirect Subsidiary of NEER, October 2021 Wind And Solar Generation Acquisition Two | Subsequent Event [Member]
Business Acquisition [Line Items]
Cash consideration, gross | $	$ 849
Consideration transferred, other | $	$ 866
Indirect Subsidiary of NEER, October 2021 Wind And Solar Generation Acquisition Two | Indirect Subsidiary Of NEER | Subsequent Event [Member]
Business Acquisition [Line Items]
Generation facility capacity (mw)	1,260
Renewable Energy Assets, Power Generation Capacity	58

Acquisitions - Schedule of Iden

Acquisitions - Schedule of Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	1 Months Ended
	Aug. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Identifiable assets acquired and liabilities assumed
Goodwill		$ 786	$ 609
2021 Third-Party Acquisition
Business Acquisition [Line Items]
Purchase price	$ 815
Identifiable assets acquired and liabilities assumed
Cash	18
Accounts receivable, inventory and prepaid expenses	14
Property, plant and equipment – net	191
Intangible assets – PPAs(a)	432
Goodwill	177
Other noncurrent assets	1
Accounts payable, accrued expenses and other current liabilities	(5)
Other noncurrent liabilities	(13)
Total net identifiable assets, at fair value	$ 815
Intangible assets, expected amortization, year one		12
Intangible assets, expected amortization, year two		35
Intangible assets, expected amortization, year three		35
Intangible assets, expected amortization, year four		35
Intangible assets, expected amortization, year five		$ 35

Revenue (Details)

Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Renewable Energy Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 190	$ 184	$ 530	$ 533
Revenues over the remaining terms of the related contacts	194		194
Natural Gas Transportation Services [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	58	$ 53	176	$ 157
Revenues over the remaining terms of the related contacts	$ 1,800		$ 1,800

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Effective tax rate (as a percent)	6.00%	11.00%	10.00%	9.00%
Taxes attributable to the noncontrolling interests	$ (14)	$ (28)	$ (64)	$ 61

Non-Derivative Fair Value Mea_3

Non-Derivative Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - Recurring Basis [Member] - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Assets:
Cash equivalents	$ 1	$ 2
Total assets	1	2
Level 1 [Member]
Assets:
Cash equivalents	1	2
Total assets	1	2
Level 2 [Member]
Assets:
Cash equivalents	0	0
Total assets	$ 0	$ 0

Non-Derivative Fair Value Mea_4

Non-Derivative Fair Value Measurements - Carrying Value and Fair Value of Other Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current maturities	$ 3,983	$ 3,388
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current maturities	4,135	3,529
Level 2 [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current maturities	4,110	$ 3,503
Level 2 [Member] | Fair Value [Member] | 2020 Convertible Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, including current maturities	$ 1,122

Derivative Instruments and He_3

Derivative Instruments and Hedging Activity - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative Instruments with Contingent Features Liabilities, at Fair Value	$ 550	$ 769
Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount	$ 7,106	$ 7,088

Derivative Instruments and He_4

Derivative Instruments and Hedging Activity - Fair Value of Derivative Instruments Included in Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Derivative Liability	$ 552	$ 802
Current derivative liabilities	23	20
Noncurrent derivative liabilities	529	782
Interest Rate Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	(30)	(47)
Derivative Liability	(30)	(47)
Derivative Asset, Not Subject to Master Netting Arrangement	0	0
Derivative Liability, Not Subject to Master Netting Arrangement	552	802
Interest Rate Contract [Member] | Level 1 [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	0	0
Derivative Liability	0	0
Interest Rate Contract [Member] | Level 2 [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	30	47
Derivative Liability	582	849
Interest Rate Contract [Member] | Fair Value, Inputs, Level 3
Derivatives, Fair Value [Line Items]
Derivative Asset	0	0
Derivative Liability	$ 0	$ 0

Derivative Instruments and He_5

Derivative Instruments and Hedging Activity - Gains (Losses) Related to Cash Flow Hedges (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest Rate Contract [Member] | Interest Expense [Member] | Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in interest expense	$ 6	$ 131	$ 235	$ (609)

Variable Interest Entities (Det

Variable Interest Entities (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2021USD ($)variable_interest_entitysolar_generation_facilityequity_investmentelectric_generation_facilityMW	Sep. 30, 2021USD ($)variable_interest_entitysolar_generation_facilityequity_investmentelectric_generation_facilityMWshares	Dec. 31, 2020USD ($)
Variable Interest Entity [Line Items]
Number of solar facilities | solar_generation_facility	1	1
Assets	$ 13,445	$ 13,445	$ 12,562
Liabilities	5,040	5,040	4,855
Non-current assets	12,810	12,810	12,148
Non-current liabilities	$ 4,839	$ 4,839	4,505
Subsidiaries [Member]
Variable Interest Entity [Line Items]
Number of investments | equity_investment	3	3
Number of investments contributed to | equity_investment	1
NEP OpCo [Member]
Variable Interest Entity [Line Items]
Non-current assets	$ 138	$ 138	10
Non-current liabilities			21
NEP OpCo [Member] | Subsidiaries [Member]
Variable Interest Entity [Line Items]
Number of investments | equity_investment	3	3
Generation facility capacity (mw) | MW	277	277
Economic rights percentage	100.00%	100.00%
Differential Membership Interests [Member]
Variable Interest Entity [Line Items]
Number of entities consolidated | variable_interest_entity	13	13
Number of investments | electric_generation_facility	23	23
Differential Membership Interests [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Assets	$ 5,169	$ 5,169	5,299
Liabilities	$ 137	$ 137	224
NEP Subsidiaries [Member] | Noncontrolling Class B interests [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Number of entities consolidated | variable_interest_entity	5	5
Assets	$ 9,121	$ 9,121	9,410
Liabilities	$ 1,254	$ 1,254	1,502
Generation facility capacity (mw) | MW	3,704	3,704
Number of natural gas pipelines | solar_generation_facility	8	8
Rosmar, Silver State and Meade [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Number of entities consolidated | variable_interest_entity	4	4
Other Acquisitions [Member] | Differential Membership And Noncontrolling Class B Interests [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Assets	$ 2,621	$ 2,621	2,694
Liabilities	$ 64	$ 64	$ 153
NEP OpCo [Member] | NEP OpCo [Member]
Variable Interest Entity [Line Items]
Ownership interests percentage	50.00%	50.00%
NEP OpCo [Member] | Class B Units, Series 1 [Member] | NextEra Energy Partners, LP [Member] | NEP OpCo [Member]
Variable Interest Entity [Line Items]
Number of units issued (in units) | shares		1,000,000
NEP OpCo [Member] | Class B Units, Series 2 [Member] | NextEra Energy Partners, LP [Member] | NEP OpCo [Member]
Variable Interest Entity [Line Items]
Number of units issued (in units) | shares		1,000,000
NEP OpCo [Member]
Variable Interest Entity [Line Items]
Limited partner interest percentage	43.00%	43.00%
Noncontrolling limited partner interest percentage	57.00%	57.00%

Debt - Schedule of Long Term De

Debt - Schedule of Long Term Debt (Details) - USD ($)	1 Months Ended
	Oct. 31, 2021	Sep. 30, 2021
Line of Credit [Member] | Revolving Credit Facility [Member] | NEP OpCo [Member]
Debt Instrument [Line Items]
NEP OpCo senior secured revolving credit facility		$ 90,000,000
Secured Debt [Member] | NEP OpCo [Member]
Debt Instrument [Line Items]
Aggregate principal amount		34,000,000
Long-term Debt		868,000,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Aggregate principal amount		500,000,000
Unsecured Debt [Member] | NEP OpCo [Member]
Debt Instrument [Line Items]
Aggregate principal amount		$ 500,000,000
Interest Rate		0.00%
Letter of Credit [Member] | Revolving Credit Facility [Member] | NEP OpCo [Member]
Debt Instrument [Line Items]
Total amount of letters of credit		$ 116,000,000
Letter of Credit [Member] | Revolving Credit Facility [Member] | NEP OpCo [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Proceeds from Lines of Credit	$ 305,000,000
Letter of Credit [Member] | Revolving Credit Facility Due 2025 [Member] | NEP OpCo [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Proceeds from Lines of Credit	$ 12,000,000

Debt - Additional Information (

Debt - Additional Information (Details)	1 Months Ended	9 Months Ended
	Jun. 30, 2021	Sep. 30, 2021USD ($)$ / shares$ / option	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Capped call transaction		$ 31,000,000	$ 0
Long-term Debt, Gross				$ 600,000,000
Convertible notes		64,000,000	$ 300,000,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Aggregate principal amount		$ 500,000,000
Debt instrument, convertible, conversion rate	0.11049%
Debt instrument, convertible, conversion price (in dollars per unit) | $ / shares		$ 90.5043
Capped call initial strike price (in dollars per option) | $ / option		90.5043
Initial cap price (in dollars per option) | $ / option		113.1300
Unsecured Debt [Member] | NEP OpCo [Member]
Debt Instrument [Line Items]
Aggregate principal amount		$ 500,000,000

Equity (Details)

Equity (Details) $ / shares in Units, shares in Millions	Oct. 19, 2021$ / shares	Oct. 31, 2021USD ($)	Jun. 30, 2021USD ($)	May 31, 2021USD ($)	Oct. 31, 2020USD ($)shares	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)shares		Apr. 30, 2021USD ($)	Sep. 30, 2021USD ($)shares		Sep. 30, 2020USD ($)shares		Dec. 31, 2020USD ($)	Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Noncontrolling interests						$ 6,084,000,000				$ 6,084,000,000				$ 5,353,000,000
Issuance of common units - net							$ 347,000,000	[1]		56,000,000	[2]	$ 347,000,000	[3]
Convertible notes						64,000,000	300,000,000			64,000,000		300,000,000
Proceeds from capped call of convertible debt					$ 30,000,000
Other comprehensive income related to equity method investees						0	0			1,000,000		1,000,000
Stockholders' equity, including portion attributable to noncontrolling interest			$ 8,455,000,000			8,405,000,000	$ 6,723,000,000			8,405,000,000		$ 6,723,000,000		$ 7,707,000,000	$ 6,283,000,000	$ 7,066,000,000
Noncontrolling Interest, Purchase Price To Be Paid				$ 1,243,000,000					$ 1,095,000,000
Sale of Class B noncontrolling interest – net			$ 493,000,000							$ 493,000,000
Noncontrolling Interest, Estimated Percentage of Cash Distributions Received				25.00%
Noncontrolling Interest, Actual Percentage of Cash Distributions Received				17.00%
Noncontrolling Interest, Buyout Right, Return Percentage				6.76%
Noncontrolling Interest, Buyout Right, Right To Pay, Maximum Percentage				100.00%
Series A Convertible Preferred Units
Accumulated Other Comprehensive Income (Loss) [Line Items]
Conversion of stock, shares converted (in shares) | shares							1.8					1.8
Conversion ratio							1					1
Common Stock
Accumulated Other Comprehensive Income (Loss) [Line Items]
Conversion of stock, shares converted (in shares) | shares					1.2		5.7					5.7
Conversion ratio					1
Convertible notes							$ 300,000,000					$ 300,000,000
Genesis Solar Holdings, LLC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Noncontrolling Interest, Estimated Percentage of Cash Distributions Received				75.00%
Noncontrolling Interest, Actual Percentage of Cash Distributions Received				83.00%
ATM Program
Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance of units, in units | shares										0.7
Issuance of common units - net										$ 50,000,000
Stock issuance costs										1,000,000
Subsequent Event [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Distribution made to limited partner, distributions declared, per unit (in dollars per share) | $ / shares	$ 0.6850
Subsequent Event [Member] | NEP Renewables III, LC
Accumulated Other Comprehensive Income (Loss) [Line Items]
Noncontrolling Interest, Purchase Price To Be Paid		$ 824,000,000
Ownership percentage		100.00%
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity, including portion attributable to noncontrolling interest						19,000,000	21,000,000			19,000,000		21,000,000
Total Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Noncontrolling interests						11,000,000	13,000,000			11,000,000		13,000,000
Total Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity attributable to parent						$ 8,000,000	$ 8,000,000			$ 8,000,000		$ 8,000,000
[1]	During the three months ended September 30, 2020, NEP issued 1.8 million NEP common units upon the conversion of preferred units on a one-for-one basis and issued approximately 5.7 million NEP common units upon the conversion of $300 million convertible notes (see Note 8 - Common Unit Issuances). NEP recognized a deferred tax asset of $47 million related to the issuance of NEP common units.
[2]	See Note 8 - ATM Program for further discussion. Includes deferred tax impact of approximately $6 million.
[3]	During the nine months ended September 30, 2020, NEP issued 1.8 million NEP common units upon the conversion of preferred units on a one-for-one basis and issued approximately 5.7 million NEP common units upon the conversion of $300 million convertible notes (see Note 8 - Common Unit Issuances). NEP recognized a deferred tax asset of $47 million related to the issuance of NEP common units.

Equity - Basic and Diluted Earn

Equity - Basic and Diluted Earnings Per Unit (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net income attributable to NEP	$ 18	$ 56	$ 146	$ (119)
Adjustments for 2017 convertible notes and preferred units(a)	0	2	0	0
Net income (loss) attributable to NEP used to compute diluted earnings (loss) per unit	$ 18	$ 58	$ 146	$ (119)
Denominator:
Weighted-average number of common units outstanding – basic (in shares)	76.6	67.7	76.3	66.2
Convertible notes and preferred units (in shares)	0	8.2	0	0
Weighted-average number of common units outstanding – assuming dilution (in shares)	76.6	75.9	76.3	66.2
Earnings (loss) per unit attributable to NEP:
Basic (in shares)	$ 0.24	$ 0.83	$ 1.92	$ (1.80)
Assuming dilution (in shares)	$ 0.24	$ 0.76	$ 1.92	$ (1.80)
Antidilutive shares (in shares)				9.6

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Related Party Transaction [Line Items]
Due from related parties	$ 322		$ 322		$ 28
Revenue from related parties	5	$ 2	44	$ 13
Transportation and Fuel Management Agreement [Member]
Related Party Transaction [Line Items]
Due from related parties	13		13
Revenue from related parties	4	2	39	12
NextEra Energy, Inc. [Member] | Management Services Agreement [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party	(36)	(29)	(102)	(82)
NEER [Member] | Cash Sweep and Credit Support Agreement [Member]
Related Party Transaction [Line Items]
Interest expense		$ (1)		$ (4)
Due from related parties	306		$ 306		$ 10
NEP OpCo [Member] | NextEra Energy, Inc. [Member] | Management Services Agreement [Member]
Related Party Transaction [Line Items]
Management fee, percent of EBITDA			1.00%
Annual management fee			$ 4
Related Party Transaction, Additional Management Fee, Threshold, Prior Year EBITDA			4
NextEra Energy Capital Holdings [Member] | Guarantees and Letters of Credit [Member]
Related Party Transaction [Line Items]
Total amount of letters of credit	$ 587		$ 587

Summary of Significant Accoun_3

Summary of Significant Accounting and Reporting Policies - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)pipeline	Dec. 31, 2020USD ($)
Property, Plant and Equipment [Line Items]
Restricted cash, current	$ 4	$ 4
Accumulated deferred investment tax credit		124
Sales-type lease, net investment in lease	16
Sales-type lease, lease receivable	$ 29
Convertible investment tax credit, accounts payable and accrued Expenses		100
Convertible investment tax credit, other current liabilities		12
Convertible investment tax credit, due to related parties, current		$ 12
Non Affiliated Party [Member]
Property, Plant and Equipment [Line Items]
Number Of Pipelines | pipeline	1
NEP OpCo [Member]
Property, Plant and Equipment [Line Items]
Noncontrolling ownership interest	57.00%
NEP OpCo [Member] | Non Affiliated Party [Member]
Property, Plant and Equipment [Line Items]
Noncontrolling ownership interest	10.00%
Silver State [Member]
Property, Plant and Equipment [Line Items]
Noncontrolling ownership interest	50.00%

Summary of Significant Accoun_4

Summary of Significant Accounting and Reporting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Property, plant and equipment, gross	$ 8,792	$ 8,606
Accumulated depreciation	(1,633)	(1,443)
Property, plant and equipment - net	$ 7,159	$ 7,163

Summary of Significant Accoun_5

Summary of Significant Accounting and Reporting Policies - Noncontrolling Interests (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balances, beginning of period				$ 5,353
Sale of Class B noncontrolling interest – net	$ 493			493
Related party note receivable				1	$ 1
Net income (loss) attributable to noncontrolling interests		$ 76	$ 138	317	(284)
Related party contributions			1		6
Related party distributions		(94)	(81)	(243)	(212)
Changes in non-economic ownership interests		6	(7)	130	(7)
Payments to Class B noncontrolling interest investors		(28)	(13)	(63)	(34)
Sale of differential membership interest				48
Other		(1)	(1)	(2)	(3)
Balances, end of period		6,084		6,084
Class B Noncontrolling Ownership Interests [Member]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balances, beginning of period		4,147	2,712	3,550	2,628
Sale of Class B noncontrolling interest – net				493
Net income (loss) attributable to noncontrolling interests		79	55	217	160
Payments to Class B noncontrolling interest investors		(28)	(13)	(63)	(34)
Other				1
Balances, end of period	4,147	4,198	2,754	4,198	2,754
Differential Membership Interests [Member]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balances, beginning of period		1,675	1,681	1,759	1,798
Net income (loss) attributable to noncontrolling interests		(66)	(56)	(220)	(205)
Differential membership investment contributions, net of distributions		24	39	47	71
Sale of differential membership interest				48
Other			(1)	(1)	(1)
Balances, end of period	1,675	1,633	1,663	1,633	1,663
NEER's Noncontrolling Ownership Interests in NEP OpCo and Silver State [Member]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balances, beginning of period		81	(97)	(14)	389
Related party note receivable				1	1
Net income (loss) attributable to noncontrolling interests		49	126	288	(236)
Other comprehensive income (loss)				1	1
Related party distributions		(87)	(79)	(233)	(206)
Other		1		1	1
Balances, end of period	81	44	(50)	44	(50)
Other Noncontrolling Interest [Member]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balances, beginning of period		197	53	58	68
Net income (loss) attributable to noncontrolling interests		14	13	32	(3)
Related party contributions			1		6
Related party distributions		(7)	(2)	(10)	(6)
Changes in non-economic ownership interests		6	(7)	130	(7)
Other		(1)		(1)
Balances, end of period	197	209	58	209	58
Non-controlling Interests [Member]
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balances, beginning of period		6,100	4,349	5,353	4,883
Sale of Class B noncontrolling interest – net				493
Related party note receivable				1	1
Net income (loss) attributable to noncontrolling interests		76	138	317	(284)
Other comprehensive income (loss)				1	1
Related party contributions			1		6
Related party distributions		(94)	(81)	(243)	(212)
Changes in non-economic ownership interests		6	(7)		(7)
Differential membership investment contributions, net of distributions		24	39	47	71
Payments to Class B noncontrolling interest investors		(28)	(13)	(63)	(34)
Sale of differential membership interest				48
Other		0	(1)	0
Balances, end of period	$ 6,100	$ 6,084	$ 4,425	$ 6,084	$ 4,425

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Loss Contingencies [Line Items]
Payments to acquire projects	$ 69
Remaining commitments	11
Distributions from equity method investee	$ 1	$ 8