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Variable Interest Entities - HLVB Method of Accounting (Details) - Variable Interest Entity, Primary Beneficiary - Clean Energy Businesses - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2022
CED Nevada Virginia | Tax Equity Investors |  |
Variable Interest Entity [Line Items] |  |
Income (loss) before tax | $ 6 | $ (36)
Net income (loss) | 5 | (27)
CED Nevada Virginia | Con Edison Development |  |
Variable Interest Entity [Line Items] |  |
Income (loss) before tax | (7) | 32
Net income (loss) | (5) | 24
Tax Equity Projects | Tax Equity Investors |  |
Variable Interest Entity [Line Items] |  |
Income (loss) before tax | 0 | (7)
Net income (loss) | 0 | (5)
Tax Equity Projects | Con Edison Development |  |
Variable Interest Entity [Line Items] |  |
Income (loss) before tax | 16 | 44
Net income (loss) | $ 12 | $ 33

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