Acquisitions Acquistions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2021	Sep. 30, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Business Combination, Consideration Transferred							$ 28
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	$ 178	$ 36	$ 214
Business Combination, Goodwill Recognized, Description		81 million		45 million
Asset Acquisition, Contingent Consideration [Line Items]
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination							$ 7
Additional Paid in Capital					$ 6,355	$ 6,688
Non Recourse Debt Non Current					18,482	17,846
Cubico II
Asset Acquisition, Contingent Consideration [Line Items]
Payments to Acquire Productive Assets						185
Windsor Solar
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Consideration Transferred, Contingent Consideration						5
Asset Acquisition, Indemnification Asset, Amount						17
Tunica Windpower LLC
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Consideration Transferred, Contingent Consideration						7
Asset Acquisition, Indemnification Asset, Amount						22
Agua Clara
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Indemnification Asset, Amount						98
Calhoun
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Indemnification Asset, Amount					64
Bellefield
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Indemnification Asset, Amount					358
Rexford
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Indemnification Asset, Amount					253
Asset Acquisition, Construction In Progress, Amount					282
Bolero Solar Park
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Indemnification Asset, Amount					114
Petersburg Solar Project
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Indemnification Asset, Amount					49
AIMCo
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners							25.00%
Other Income [Member]
Business Acquisition [Line Items]
Asset Acquisition of a VIE, Contingent Consideration, Remeasurement Gain					16	3	$ 28
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain					0	$ 5	254
Cubico Wind Complex
Business Acquisition [Line Items]
Asset Acquisition, Purchase Price							109
Great Cove Solar I
Business Acquisition [Line Items]
Asset Acquisition, Purchase Price							13
Asset Acquisition, Contingent Consideration, Liability		$ 6
Asset Acquisition, Consideration Transferred, Other Assets							2
Great Cove Solar II
Business Acquisition [Line Items]
Asset Acquisition, Purchase Price							24
Asset Acquisition, Contingent Consideration, Liability	$ 22		$ 22
Asset Acquisition, Consideration Transferred, Other Assets							12
Great Cove
Business Acquisition [Line Items]
Asset Acquisition of a VIE, Contingent Consideration, Remeasurement Gain							32
Cajuina Wind Complex
Business Acquisition [Line Items]
Asset Acquisition, Purchase Price							22
Cajuina Wind Complex II
Business Acquisition [Line Items]
Asset Acquisition, Purchase Price							24
Asset Acquisition, Contingent Consideration, Liability				$ 3
Serra Verde Wind Complex
Business Acquisition [Line Items]
Asset Acquisition, Purchase Price							18
New York Wind
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired							$ 352
Business Combination, Goodwill Recognized, Description							199 million
Asset Acquisition, Contingent Consideration [Line Items]
Non Recourse Debt Non Current							$ 126
Community Energy
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross							232
Payments to Acquire Businesses, Net of Cash Acquired							217
Other Payments to Acquire Businesses							$ 15
Business Combination, Goodwill Recognized, Description							90 million
Asset Acquisition, Contingent Consideration [Line Items]
Non Recourse Debt Non Current							$ 38
sPower [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred		$ 102
Asset Acquisition, Contingent Consideration [Line Items]
Additional Paid in Capital							3
Hardy Hills Wind
Business Acquisition [Line Items]
Asset Acquisition, Contingent Consideration, Liability							3
Asset Acquisition, Contingent Consideration [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets							52
Business Combination, Bargain Purchase, Gain Recognized, Amount							$ 6
Calhoun
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Consideration Transferred, Contingent Consideration					$ 42
Calhoun | Weighted Average [Member]
Asset Acquisition, Contingent Consideration [Line Items]
Fair Value Measurement Inputs, Nonrecurring					99.00%
Rexford
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Consideration Transferred, Contingent Consideration					$ 4
Bellefield
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross					449
Payments to Acquire Businesses, Net of Cash Acquired					165
Other Payments to Acquire Businesses					28
Asset Acquisition, Consideration Transferred, Other Assets					82
Asset Acquisition, Contingent Consideration [Line Items]
Asset Acquisition, Consideration Transferred, Contingent Consideration					165
Asset Acquisition, Project Development Rights					$ 200
Bellefield | Weighted Average [Member]
Asset Acquisition, Contingent Consideration [Line Items]
Fair Value Measurement Inputs, Nonrecurring					91.90%
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage							25.00%
AES Clean Energy
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired				75.00%
Mountain View Power Partners
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired							75.00%
Agua Clara
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired						100.00%
Windsor Solar
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired						100.00%
Tunica Windpower LLC
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired						100.00%
Cubico II
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired						100.00%
Calhoun
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired					100000000.00%
Bellefield
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired					100000000.00%
Rexford
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired					100000000.00%
Petersburg Solar Project
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired					100000000.00%