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Dispositions (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Mar. 31, 2022 | Jun. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Carrying value of projects sold | $ 44,214 | $ 44,633 |
Subsidiaries |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Carrying value of projects sold | 41,611 | $ 42,013 |
Clean Energy Businesses | Subsidiaries |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Carrying value of projects sold |  |  | $ 192
Gain (loss) on sale of projects | 3 |  |
Gain on sale, after tax | 2 |  |
Equity method investments | $ 11 |  |

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