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Variable Interest Entities - Net Assets (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Noncontrolling interest | $ 245 | $ 299
Great Valley Solar |  |
Variable Interest Entity [Line Items] |  |
Non-utility property, less accumulated depreciation | 273 | 275
Other assets | 41 | 37
Total assets | 314 | 312
Other liabilities | 15 | 14
Total liabilities | 15 | 14
Accumulated depreciation | 29 | 26
Great Valley Solar | Tax Equity Investors |  |
Variable Interest Entity [Line Items] |  |
Noncontrolling interest | 80 | 84
Copper Mountain - Mesquite Solar |  |
Variable Interest Entity [Line Items] |  |
Non-utility property, less accumulated depreciation | 428 | 431
Other assets | 169 | 167
Total assets | 597 | 598
Other liabilities | 77 | 74
Total liabilities | 77 | 74
Accumulated depreciation | 48 | 44
Copper Mountain - Mesquite Solar | Tax Equity Investors |  |
Variable Interest Entity [Line Items] |  |
Noncontrolling interest | 112 | 118
CED Nevada Virginia |  |
Variable Interest Entity [Line Items] |  |
Non-utility property, less accumulated depreciation | 636 | 643
Other assets | 57 | 55
Total assets | 693 | 698
Other liabilities | 327 | 315
Total liabilities | 327 | 315
Noncontrolling interest | 51 | 95
Accumulated depreciation | $ 15 | $ 10

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