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Fair Value (Instruments Not Measured at Fair Value) (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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Estimate of Fair Value Measurement [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Value added tax |  |  | $ 2
Accounts receivable - noncurrent | [1] | $ 81 | 117
Liabilities, Fair Value Disclosure [Abstract] |  |  |
Non-recourse debt, including $2,142 and $2,223, respectively, related to variable interest entities |  | 17,654 | 16,091
Recourse debt |  | 3,812 | 3,818
Carrying Amount [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Accounts receivable - noncurrent | [1] | 44 | 55
Liabilities, Fair Value Disclosure [Abstract] |  |  |
Non-recourse debt, including $2,142 and $2,223, respectively, related to variable interest entities |  | 17,020 | 14,811
Recourse debt |  | 4,177 | 3,754
Non-recourse debt, including $2,142 and $2,223, respectively, related to variable interest entities |  | 14,997 | 13,603
Level 1 [Member] | Estimate of Fair Value Measurement [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Accounts receivable - noncurrent |  | 0 | 0
Liabilities, Fair Value Disclosure [Abstract] |  |  |
Non-recourse debt, including $2,142 and $2,223, respectively, related to variable interest entities |  | 0 | 0
Recourse debt |  | 0 | 0
Level 2 [Member] | Estimate of Fair Value Measurement [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Accounts receivable - noncurrent |  | 0 | 0
Liabilities, Fair Value Disclosure [Abstract] |  |  |
Non-recourse debt, including $2,142 and $2,223, respectively, related to variable interest entities |  | 15,451 | 16,065
Recourse debt |  | 3,812 | 3,818
Level 3 [Member] | Estimate of Fair Value Measurement [Member] |  |  |
Assets, Fair Value Disclosure [Abstract] |  |  |
Accounts receivable - noncurrent | [1] | 81 | 117
Liabilities, Fair Value Disclosure [Abstract] |  |  |
Non-recourse debt, including $2,142 and $2,223, respectively, related to variable interest entities |  | 2,203 | 26
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 impacted by the Stabilization Fund enacted by the Chilean government, and are included in Other noncurrent assets in the accompanying Condensed Consolidated Balance Sheets. The fair value and carrying amount of these receivables exclude VAT of $2 million as of June 30, 2022 and December 31, 2021.

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- Definition The non-current portion of the entity's non-recourse debt. Non-recourse debt is secured by the capital stock, physical assets, contracts and cash flows of the related subsidiary. The risk is limited to the respective subsidiary business and is without recourse to the Parent Company and other subsidiaries. + References No definition available. + Details
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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(5)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(9)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 + Details
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