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Investments In and Advances To Affiliates - Summary of Financial Information of Affiliates & Subsidiaries (Details) - USD ($) $ / shares in Units, shares in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Nov. 01, 2021 | Mar. 04, 2021
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Disposition of Business |  |  |  |  |  |  |  |  |  |  | $ (1,683,000,000) | $ (95,000,000) | $ 28,000,000 |  |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  |  |  |  | $ 28,000,000 |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain |  |  |  | $ 178,000,000 | $ 36,000,000 |  |  |  | $ 214,000,000 |  |  |  |  |  |
Shares Issued, Price Per Share |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25.88
Qatar Investment Authority |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Purchase Price Agreement |  |  |  | $ 125,000,000 |  |  |  |  |  |  |  |  |  |  |
Qatar Investment Authority |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage Sold |  |  |  | 13.60% |  |  |  |  | 13.60% |  |  |  |  |  |
OPGC Affiliate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Other than Temporary Impairment |  |  |  |  |  |  |  |  |  |  |  | $ 43,000,000 |  |  |
Fluence [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  | 34.00% |  | 43.20% | 50.00% |  |  |  | 43.20% |  | 34.00% | 50.00% |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal |  | $ 325,000,000 | $ 60,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Shares, Issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 35,650 |
Shares Issued, Price Per Share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 28 |
Proceeds from divestiture of business |  | $ 936,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Fluence [Member] | Additional Decimal Displayed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  | 34.20% |  |  |  |  |  |  |  |  | 34.20% |  |  |  |
Guacolda Affiliate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 50.00% |  |  |  |  | 50.00% |  |  |  |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal |  |  | $ 34,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Purchase Price Agreement |  |  |  |  | $ 34,000,000 |  |  |  |  |  |  |  |  |  |
Equity Method Investment Long Lived Asset Impairment |  |  |  |  |  | $ 127,000,000 |  |  |  |  |  |  |  |  |
Uplight |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  | 29.40% | 29.60% | 32.30% |  |  |  |  | 32.30% |  | 29.40% | 32.00% |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal |  |  | $ 25,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  | $ 23,000,000 | $ 37,000,000 |  |  |  |  |  |  |  |  |  |  |  |
sPower [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  | 50.00% |  |  |  |  |  |  |  |  | 50.00% | 50.00% |  |  |
Business Combination, Consideration Transferred |  |  |  |  | $ 102,000,000 |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal |  | $ 35,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Acquired |  | 25.00% |  |  |  |  |  |  |  |  | 25.00% |  |  |  |
Barry |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage | [1] | 100.00% |  |  |  |  |  |  |  |  | 100.00% | 100.00% |  |  |
Other Long-term Debt |  | $ 44,000,000 |  |  |  |  |  |  |  |  | $ 44,000,000 | $ 46,000,000 |  |  |
Colon [Domain] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain |  |  |  |  |  |  |  |  |  |  | $ 6,000,000 |  |  |  |
Grupo Energia Gas Panama |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  | 49.00% |  |  |  |  |  |  |  |  | 49.00% | 0.00% |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  |  |  | $ 44,000,000 |  |  |  |  |  |  |  |  |  |  |
OPGC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  | 49.00% |  |  |  |  |  |  |
Equity Method Investment, Other than Temporary Impairment |  |  |  |  |  |  | $ 158,000,000 | $ 43,000,000 |  | $ 201,000,000 |  |  |  |  |
Equity Method Investments, Fair Value Disclosure |  |  |  |  |  |  |  | 152,000,000 |  |  |  |  |  |  |
Fair Value, Inputs, Level 3 [Member] | Long Lived Assets Held For Sale [Member] | OPGC Affiliate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  |  |  |  |  |  | $ 152,000,000 |  |  |  |  |  |  |
[1] | Represents a VIE in which the Company holds a variable interest, but is not the primary beneficiary.

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