Fair Value (Nonrecurring Unobservable Inputs) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Dec. 31, 2021	Mar. 31, 2021
Fair Value | Level 3
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	$ 371	$ 371
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Assets Liabilities Value	(55)	(55)
Inventory Write-down	23	6
AES PR
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring							$ 73
Long Lived Assets Held And Used [Member] | Fair Value | GAF Projects
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring				$ 29
Long Lived Assets Held And Used [Member] | Fair Value | Warrior Run
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	250	250
Long Lived Assets Held And Used [Member] | Fair Value | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			$ 170
Long Lived Assets Held And Used [Member] | Fair Value | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring			$ 153
Long Lived Assets Held And Used [Member] | Fair Value | New York Wind
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	310	310
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | Buffalo Gap [Member]
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	0	0
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | Mountain View Power Partners
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring						$ 11
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | Angamos [Member]
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring						86
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | Ventanas 3 & 4
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring						$ 12
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | AES Bulgaria
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring					$ 452
Long Lived Assets Held And Used [Member] | Fair Value | Level 3 | GAF Projects
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	11	11
Long Lived Assets Held And Used [Member] | Level 3 | Norgener
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	24	24
Long Lived Assets Held And Used [Member] | Level 3 | Warrior Run
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	25	25
Long Lived Assets Held And Used [Member] | Level 3 | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	93	93
Long Lived Assets Held And Used [Member] | Level 3 | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	94	94
Long Lived Assets Held And Used [Member] | Level 3 | New York Wind
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Assets Carrying Amount Disclosure Nonrecurring	$ 124	$ 124
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | Norgener
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		(90.00%)
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | GAF Projects
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		(42.00%)
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | Warrior Run
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		(931.00%)
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		(7.00%)
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		(31.00%)
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Minimum | New York Wind
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		(1.00%)
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | Norgener
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		994.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | GAF Projects
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		44.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | Warrior Run
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		74.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		9.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		6.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Maximum | New York Wind
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		5.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | Norgener
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		85.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | GAF Projects
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		1.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		0.00%
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		(2.00%)
Measurement Input, Long-term Revenue Growth Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | New York Wind
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		2.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | Norgener
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		(75.00%)
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		14.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		22.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Minimum | New York Wind
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		2.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | Norgener
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		276.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		33.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		37.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Maximum | New York Wind
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		17.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | Norgener
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		16.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | Warrior Run
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		(506.00%)
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		20.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		26.00%
Measurement Input, Operating Margin [Member] | Valuation, Income Approach [Member] | Weighted Average | New York Wind
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		9.00%
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Minimum | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		14.00%
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Minimum | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		14.00%
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Maximum | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		25.00%
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Maximum | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		25.00%
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | GAF Projects
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		9.00%
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | TEG
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		14.00%
Measurement Input, Discount Rate [Member] | Valuation, Income Approach [Member] | Weighted Average | TEP
Fair Value Assets Measured On Nonrecurring Basis Unobservable Inputs [Line Items]
Fair Value Measurement Inputs, Nonrecurring		14.00%