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Leases Lessor (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021		Jun. 30, 2020	Dec. 31, 2020
Lessor Disclosure [Abstract]
Operating Lease, Lease Income	$ 118	$ 153	$ 261		$ 288
Variable Lease, Income	25	23	39		34
Lease Income	93	$ 130	222		254
Sales-type and Direct Financing Leases, Lease Receivable, Fiscal Year Maturity [Abstract]
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, after Year Five	336		336
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received	428		428
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Five	21		21
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Four	21		21
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Three	20		20
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Two	20		20
Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year One	10		10
Sales-type and Direct Financing Leases, Lease Receivables, Gross Difference, Amount [Abstract]
Sales-type and Direct Financing Leases, Lease Receivable	223		223
Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount	(205)		(205)
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
Lessor, Operating Lease, Payment to be Received, Year One	240		240
Lessor, Operating Lease, Payment to be Received, Year Two	470		470
Lessor, Operating Lease, Payment to be Received, Year Three	406		406
Lessor, Operating Lease, Payment to be Received, Year Four	406		406
Lessor, Operating Lease, Payment to be Received, Year Five	406		406
Lessor, Operating Lease, Payment to be Received, after Year Five	1,032		1,032
Lessor, Operating Lease, Payments to be Received	2,960		2,960
Operating Lease, Risk Strategy, Residual Asset	7,970		7,970			$ 8,472
Sales-type and Direct Financing Leases, Profit (Loss)			13	[1]	$ 0
Sales-type Lease, Interest Income	4		8
Property, Plant and Equipment [Member]
Lessor Disclosure [Abstract]
Operating Lease, Right-of-Use Asset	2,476		2,476			3,103
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
Operating Lease, Right-of-Use Asset	2,476		2,476			3,103
Accumulated Amortization on PP&E
Lessor Disclosure [Abstract]
Operating Lease, Right-of-Use Asset	730		730			1,011
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
Operating Lease, Right-of-Use Asset	730		730			1,011
Assets
Lessor Disclosure [Abstract]
Operating Lease, Right-of-Use Asset	1,746		1,746			2,092
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
Operating Lease, Right-of-Use Asset	$ 1,746		1,746			$ 2,092
Distributed Energy [Member]
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
Sales-type and Direct Financing Leases, Profit (Loss)			$ (13)
[1] Related to a loss recognized at commencement of a sales-type lease at AES Distributed Energy. See Note 9—Leases for further information.

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