Fair Value (Instruments Not Measured at Fair Value) (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020
Liabilities [Abstract]
Recourse debt		$ 3,754	$ 3,447
Carrying Amount
ASSETS
Accounts receivable - noncurrent	[1]	55	97
Non-Recourse Debt		14,811	16,354
Liabilities [Abstract]
Recourse debt		3,754	3,446
Fair Value
ASSETS
Accounts receivable - noncurrent	[1]	117	197
Non-Recourse Debt		16,091	18,403
Liabilities [Abstract]
Recourse debt		3,818	3,677
Value added tax		2	4
Fair Value | Level 1
ASSETS
Accounts receivable - noncurrent		0	0
Non-Recourse Debt		0	5
Liabilities [Abstract]
Recourse debt		0	0
Fair Value | Level 2
ASSETS
Accounts receivable - noncurrent		0	0
Non-Recourse Debt		16,065	15,301
Liabilities [Abstract]
Recourse debt		3,818	3,677
Fair Value | Level 3
ASSETS
Accounts receivable - noncurrent	[1]	117	197
Non-Recourse Debt		26	3,097
Liabilities [Abstract]
Recourse debt		$ 0	$ 0

[1] These amounts primarily relate to amounts due from CAMMESA, the administrator of the wholesale electricity market in Argentina, and amounts related to green blend agreements in Chile and are included in Other noncurrent assets in the accompanying Consolidated Balance Sheets. The fair value and carrying amount of the Argentina receivables exclude VAT of $2 million and $4 million as of December 31, 2021 and 2020, respectively.