Long-term Debt - Narrative (Details) $ in Millions																												1 Months Ended		3 Months Ended		4 Months Ended	5 Months Ended	12 Months Ended
	Feb. 05, 2026 USD ($)	Jan. 13, 2026 USD ($)	Dec. 31, 2025 USD ($)	Dec. 17, 2025 USD ($)	Oct. 15, 2025 USD ($)	Sep. 19, 2025 USD ($)	Sep. 04, 2025 USD ($)	Aug. 13, 2025 USD ($)	Jun. 10, 2025 USD ($)	May 21, 2025 USD ($)	Apr. 29, 2025 USD ($)	Apr. 09, 2025 USD ($)	Mar. 20, 2025 USD ($)	Dec. 27, 2024 USD ($)	Nov. 18, 2024 USD ($)	Oct. 23, 2024 USD ($)	Jul. 25, 2024 USD ($) option	Jun. 13, 2024 USD ($)	Jun. 11, 2024 USD ($)	May 01, 2024 USD ($)	Apr. 16, 2024 USD ($)	Mar. 15, 2024 USD ($)	Dec. 28, 2023 USD ($)	Dec. 12, 2023 USD ($)	Dec. 01, 2023 USD ($)	Oct. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Jan. 31, 2026 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Total debt			$ 8,674																										$ 7,235	$ 8,674	$ 8,674	$ 8,674	$ 8,674	$ 8,674	$ 7,235
Proceeds from the revolving credit facility																																		701	0	$ 0
Repayment of outstanding loan																																		1,461	1,966	1,349
Restricted cash, current			587																										401	587	587	587	587	587	401
Net debt issuance costs			70																										57	70	70	70	70	70	57
Capital expenditures			196																										188	196	196	196	196	196	188
Property, plant and equipment			11,596																										9,944	11,596	11,596	11,596	11,596	11,596	9,944
Cash Distribution
Debt Instrument [Line Items]
Restricted cash, current			257																										78	257	257	257	257	257	78
Pine Forest
Debt Instrument [Line Items]
Unamortized debt issuance costs									$ 6
Payments for other fees				$ 15
Pine Forest | Cash Equity Investor
Debt Instrument [Line Items]
Expected contributions upon substantial completion				144
Pine Forest | Pine Forest TE Holdco LLC
Debt Instrument [Line Items]
Long-term debt				49					515
Payments for asset acquisition				50
Net assets (liabilities) assumed									(9)
Honeycomb
Debt Instrument [Line Items]
Unamortized debt issuance costs					$ 9
Daggett 1
Debt Instrument [Line Items]
Unamortized debt issuance costs											$ 3
Payments for other fees						$ 7
Daggett 1 | CEG
Debt Instrument [Line Items]
Net assets (liabilities) assumed						33
Daggett 1 | LV-Daggett Parent Holdco LLC
Debt Instrument [Line Items]
Long-term debt											220
Payments for asset acquisition					57	42
Net assets (liabilities) assumed											1
Luna Valley
Debt Instrument [Line Items]
Unamortized debt issuance costs											4
Payments for other fees							$ 9
Luna Valley | CEG
Debt Instrument [Line Items]
Expected contributions upon substantial completion							50
Luna Valley | LV-Daggett Parent Holdco LLC
Debt Instrument [Line Items]
Long-term debt											348
Payments for asset acquisition					119
Net assets (liabilities) assumed											7
Luna Valley | LV-Daggett Parent Holdco LLC | LV-Daggett Parent Holdco LLC
Debt Instrument [Line Items]
Payments for asset acquisitions, net of cash acquired and transaction expenses							72				72
Rosie South
Debt Instrument [Line Items]
Unamortized debt issuance costs													$ 1
Payments for other fees								$ 9
Net assets (liabilities) assumed													3
Rosie South | Rosamond South Investment LLC | Clearway Renew LLC
Debt Instrument [Line Items]
Current assets, receivables								29
Rosie South | Cash Equity Investor
Debt Instrument [Line Items]
Payments for asset acquisition													2
Rosie South | Cash Equity Investor | Rosamond South Investment LLC | Clearway Renew LLC
Debt Instrument [Line Items]
Current assets, receivables								41
Rosie South | CEG
Debt Instrument [Line Items]
Net assets (liabilities) assumed								53
Payments to fund project reserve accounts													3
Partial payment of long term debt																																	46
Dan’s Mountain Drop Down
Debt Instrument [Line Items]
Long-term debt															$ 125
Unamortized debt issuance costs															1
Payments for asset acquisition															1
Payments for other fees										$ 2
Net assets (liabilities) assumed															(2)
Dan’s Mountain Drop Down | Cash Equity Investor
Debt Instrument [Line Items]
Expected contributions upon substantial completion										45
Dan’s Mountain Drop Down | CEG
Debt Instrument [Line Items]
Net assets (liabilities) assumed										26
Partial payment of long term debt										16
Tuolumne
Debt Instrument [Line Items]
Asset acquisition, issuance cost											$ 163
Buckthorn Solar Portfolio LLC
Debt Instrument [Line Items]
Aggregate principal amount repurchased												$ 112
Cedro Hill Repowering
Debt Instrument [Line Items]
Proceeds from the revolving credit facility																								$ 165
Long-term debt																								254
Expected contributions upon substantial completion														$ 152
Remaining balance to distribute																								55
Payments for other fees														4										4
Aggregate principal amount repurchased																								72
Proceeds from debt																								27
Net debt issuance costs																								4
Capital expenditures																								$ 3
Property, plant and equipment																													82						82
Cedro Hill Repowering | Clearway Renew LLC
Debt Instrument [Line Items]
Remaining balance to distribute														26
Rosamond Central Solar Project
Debt Instrument [Line Items]
Total debt																											$ 77
Rosamond Central Solar Project | Rosie Central BESS
Debt Instrument [Line Items]
Payments for asset acquisition																									$ 70
Current assets, receivables																									279
Repayment of partial loan amount																									70
Rosamond Central Solar Project | Cash Equity Investor | Rosie Central BESS
Debt Instrument [Line Items]
Payments for asset acquisition																									54
Rosamond Central Solar Project | Tax Equity Investors | Rosie Central BESS
Debt Instrument [Line Items]
Current assets, receivables																									215
Rosie Class B LLC, Due 2029
Debt Instrument [Line Items]
Long-term debt																		$ 21
Payments for other fees																		11
Rosie Class B LLC, Due 2029 | Cash Equity Investor
Debt Instrument [Line Items]
Remaining balance to distribute																		44
Rosie Class B LLC, Due 2029 | CEG
Debt Instrument [Line Items]
Expected contributions upon substantial completion																		56
Contributions from noncontrolling interests, net of distributions																		39
NIMH Solar, due 2024
Debt Instrument [Line Items]
Aggregate principal amount repurchased																			$ 146
Victory Pass and Arica, due 2024
Debt Instrument [Line Items]
Long-term debt																				$ 75
Victory Pass and Arica, due 2024 | Cash Equity Investor
Debt Instrument [Line Items]
Expected contributions upon substantial completion																				347
Victory Pass and Arica, due 2024 | CEG
Debt Instrument [Line Items]
Expected contributions upon substantial completion																				52
Contributions from noncontrolling interests, net of distributions																				103
Victory Pass and Arica, due 2024 | Sponsor Equity Bridge Loan
Debt Instrument [Line Items]
Long-term debt																										$ 483
Victory Pass and Arica, due 2024 | Tax Equity Bridge Loan
Debt Instrument [Line Items]
Long-term debt																										385
Victory Pass and Arica, due 2024 | Tax Equity Investors
Debt Instrument [Line Items]
Expected contributions upon substantial completion																				410
Long-term debt, additions																																			62	22
Victory Pass and Arica
Debt Instrument [Line Items]
Long-term debt																										864
Unamortized debt issuance costs																										4
Payments for other fees																				18
Net assets (liabilities) assumed																										(1)
Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt																					$ 309
Unamortized debt issuance costs																					3
Payments for other fees																					6
Net assets (liabilities) assumed																					17
Construction completion reserves																					16
Texas Solar Nova 1 Drop Down
Debt Instrument [Line Items]
Unamortized debt issuance costs																							$ 1
Texas Solar Nova 1
Debt Instrument [Line Items]
Long-term debt																							18
Payments for other fees																							5
Long-term debt, additions																							12
Texas Solar Nova 1 | CEG
Debt Instrument [Line Items]
Remaining balance to distribute																							9
Texas Solar Nova 2
Debt Instrument [Line Items]
Long-term debt																						$ 19
Unamortized debt issuance costs																						1
Payments for other fees																						4
Texas Solar Nova 2 | CEG
Debt Instrument [Line Items]
Contributions from noncontrolling interests, net of distributions																						9
Subsequent Event | Cash Distribution
Debt Instrument [Line Items]
Restricted cash, current																												$ 51
Subsequent Event | Deriva Solar Portfolio
Debt Instrument [Line Items]
Maturity term	364 days
Senior Notes 2034 | Subsequent Event
Debt Instrument [Line Items]
Proceeds from the revolving credit facility		$ 600
Interest rate, percentage		5.75%
Repayments of outstanding borrowings		$ 361
Clearway Renew LLC | Rosamond Central Solar Project | Rosie Central BESS
Debt Instrument [Line Items]
Payments for asset acquisition																									16
Current assets, receivables																		184							$ 64
Clearway Renew LLC | Rosie Class B LLC, Due 2029
Debt Instrument [Line Items]
Long-term debt																		279
Clearway Renew LLC | Victory Pass and Arica, due 2024 | VP-Arica TargetCo LLC
Debt Instrument [Line Items]
Payments to acquire productive assets																				165
Revolving Credit Facility
Debt Instrument [Line Items]
Total debt			96																											96	96	96	96	96
Term Loan | Tuolumne
Debt Instrument [Line Items]
Basis spread on variable rate											1.625%
Term Loan | Buckthorn Solar Portfolio LLC
Debt Instrument [Line Items]
Basis spread on variable rate												1.625%
Long-term debt												$ 104
Term Loan | Capistrano Portfolio Holdco
Debt Instrument [Line Items]
Asset acquisition, issuance cost																$ 121
Term Loan | Broken Bow and Crofton Bluffs
Debt Instrument [Line Items]
Contributions from noncontrolling interests, net of distributions																63
Term Loan | NIMH Solar, due 2024
Debt Instrument [Line Items]
Long-term debt																			137
Term Loan | Texas Solar Nova 2
Debt Instrument [Line Items]
Long-term debt																						80
Term Loan | Subsequent Event | Deriva Solar Portfolio
Debt Instrument [Line Items]
Asset acquisition, issuance cost	$ 100
Basis spread on variable rate	2.00%
Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding			1,063																											1,063	1,063	1,063	1,063	1,063
Letter of Credit | Tuolumne
Debt Instrument [Line Items]
Asset acquisition, issuance cost											$ 22
Letter of Credit | Buckthorn Solar Portfolio LLC
Debt Instrument [Line Items]
Long-term debt												$ 22
Letter of Credit | Capistrano Portfolio Holdco
Debt Instrument [Line Items]
Asset acquisition, issuance cost																$ 42
Letter of Credit | Natural Gas CA Holdco LLC LC Facility
Debt Instrument [Line Items]
Maturity term																	3 years
Asset acquisition, long-term debt, outstanding																	$ 200
Debt instrument, number of additional extension option | option																	2
Letter of Credit | Natural Gas CA Holdco LLC LC Facility | Minimum
Debt Instrument [Line Items]
Debt instrument, extension term																	1 year
Letter of Credit | NIMH Solar, due 2024
Debt Instrument [Line Items]
Long-term debt																			$ 17
Letter of Credit | Subsequent Event | Deriva Solar Portfolio
Debt Instrument [Line Items]
Asset acquisition, issuance cost	$ 119
Construction Loans | Pine Forest
Debt Instrument [Line Items]
Long-term debt									103
Remaining balance to distribute				39
Long-term debt, additions				103
Construction Loans | Honeycomb
Debt Instrument [Line Items]
Long-term debt					218
Long-term debt, additions																															$ 38
Construction Loans | Daggett 1
Debt Instrument [Line Items]
Long-term debt											92
Construction loan proceeds						31
Remaining balance to distribute						6
Long-term debt, additions																														$ 40
Construction Loans | Luna Valley
Debt Instrument [Line Items]
Long-term debt							22				144
Construction loan proceeds							28
Long-term debt, additions																																$ 51
Construction Loans | Rosie South
Debt Instrument [Line Items]
Long-term debt													179
Construction loan proceeds								13
Long-term debt, additions																																	$ 49
Construction Loans | Cedro Hill Repowering
Debt Instrument [Line Items]
Long-term debt														38
Construction loan proceeds														54
Long-term debt, additions														99																					88
Construction Loans | Rosamond Central Solar Project
Debt Instrument [Line Items]
Long-term debt																											115
Construction Loans | Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt																					112
Construction Loans | Texas Solar Nova 1 Drop Down
Debt Instrument [Line Items]
Long-term debt																							90
Construction Loans | Texas Solar Nova 1
Debt Instrument [Line Items]
Long-term debt, additions																							102
Cash Equity Bridge Loan | Pine Forest
Debt Instrument [Line Items]
Long-term debt									102
Payments for asset acquisition									54
Construction loan proceeds				100
Long-term debt, additions			$ 52
Cash Equity Bridge Loan | Luna Valley
Debt Instrument [Line Items]
Long-term debt							46				64
Cash Equity Bridge Loan | Rosie South
Debt Instrument [Line Items]
Long-term debt													6
Payments for other fees													3
Cash Equity Bridge Loan | Dan’s Mountain Drop Down
Debt Instrument [Line Items]
Long-term debt															77
Remaining balance to distribute										70
Cash Equity Bridge Loan | Cedro Hill Repowering
Debt Instrument [Line Items]
Long-term debt														16
Cash Equity Bridge Loan | Victory Pass and Arica, due 2024
Debt Instrument [Line Items]
Aggregate principal amount repurchased																				351
Cash Equity Bridge Loan | Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt																					91
Tax Equity Bridge Loan | Pine Forest
Debt Instrument [Line Items]
Long-term debt									41
Construction loan proceeds				41
Tax Equity Bridge Loan | Honeycomb
Debt Instrument [Line Items]
Long-term debt					234
Tax Equity Bridge Loan | Daggett 1
Debt Instrument [Line Items]
Long-term debt											131
Construction loan proceeds						131
Tax Equity Bridge Loan | Luna Valley
Debt Instrument [Line Items]
Long-term debt							144				144
Tax Equity Bridge Loan | Rosie South
Debt Instrument [Line Items]
Long-term debt								276					$ 284
Tax Equity Bridge Loan | Dan’s Mountain Drop Down
Debt Instrument [Line Items]
Long-term debt															49
Construction loan proceeds										91
Long-term debt, additions																													$ 24					$ 18
Tax Equity Bridge Loan | Cedro Hill Repowering
Debt Instrument [Line Items]
Long-term debt														138
Tax Equity Bridge Loan | Rosamond Central Solar Project
Debt Instrument [Line Items]
Long-term debt																											188
Tax Equity Bridge Loan | Rosie Class B LLC, Due 2029
Debt Instrument [Line Items]
Long-term debt																		186
Tax Equity Bridge Loan | Victory Pass and Arica, due 2024
Debt Instrument [Line Items]
Long-term debt																				$ 468
Tax Equity Bridge Loan | Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt																					109
Tax Equity Bridge Loan | Texas Solar Nova 1 Drop Down
Debt Instrument [Line Items]
Long-term debt																							151
Tax Equity Bridge Loan | Texas Solar Nova 2
Debt Instrument [Line Items]
Long-term debt																						115
Tax Credit Transfer Bridge Loan | Pine Forest
Debt Instrument [Line Items]
Long-term debt									$ 275
Partial payment of long term debt				44
Tax Credit Transfer Bridge Loan | Subsequent Event | Pine Forest
Debt Instrument [Line Items]
Repayment of outstanding loan																												$ 231
Tax Equity Investors | Pine Forest
Debt Instrument [Line Items]
Long-term debt				38
Tax Equity Investors | Honeycomb
Debt Instrument [Line Items]
Contributions from noncontrolling interests, net of distributions					$ 59
Tax Equity Investors | Daggett 1
Debt Instrument [Line Items]
Long-term debt						108
Contributions from noncontrolling interests, net of distributions						38
Tax Equity Investors | Luna Valley
Debt Instrument [Line Items]
Long-term debt							114
Payments for asset acquisition											$ 18
Contributions from noncontrolling interests, net of distributions							29
Tax Equity Investors | Rosie South
Debt Instrument [Line Items]
Long-term debt								226
Contributions from noncontrolling interests, net of distributions								58
Tax Equity Investors | Dan’s Mountain Drop Down
Debt Instrument [Line Items]
Long-term debt										90
Payments for asset acquisition															$ 7
Contributions from noncontrolling interests, net of distributions										18
Tax Equity Investors | Cedar Creek Drop Down
Debt Instrument [Line Items]
Long-term debt																					108
Tax Equity Investors | Texas Solar Nova 1
Debt Instrument [Line Items]
Long-term debt																							148
Tax Equity Investors | Texas Solar Nova 2
Debt Instrument [Line Items]
Long-term debt																						$ 130
Cash Equity Investor | Pine Forest
Debt Instrument [Line Items]
Contributions from noncontrolling interests, net of distributions				$ 9
Cash Equity Investor | Dan’s Mountain Drop Down
Debt Instrument [Line Items]
Payments for asset acquisition										$ 36
Line of Credit | Letter of Credit | Rosamond Central Solar Project
Debt Instrument [Line Items]
Bridge credit agreement, borrowing amount																											$ 41
Construction Loan | Daggett 1
Debt Instrument [Line Items]
Long-term debt, additions						$ 132
Construction Loan | Luna Valley
Debt Instrument [Line Items]
Long-term debt, additions							$ 195
Construction Loan | Rosie South
Debt Instrument [Line Items]
Long-term debt, additions								$ 228
Construction Loan | Rosie Class B LLC, Due 2029
Debt Instrument [Line Items]
Long-term debt, additions																		$ 115																	$ 30	$ 271
Construction Loan | Cedar Creek Drop Down
Debt Instrument [Line Items]
Partial payment of long term debt																					2
Long-term debt, additions																					$ 110
Construction Invoices | Cedro Hill Repowering
Debt Instrument [Line Items]
Long-term debt														$ 11
Sponsor Equity Bridge Loan | Victory Pass and Arica
Debt Instrument [Line Items]
Partial payment of long term debt																										$ 133
Sponsor Equity Bridge Loan | Texas Solar Nova 1 Drop Down
Debt Instrument [Line Items]
Long-term debt																							$ 109