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Variable Interest Entities - HLVB Method of Accounting (Details) - Variable Interest Entity, Primary Beneficiary - Clean Energy Businesses $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($)
CED Nevada Virginia | Tax equity investor |
Schedule of Equity Method Investments [Line Items] |
Income (loss) | $ (49)
Net income (loss) | (37)
CED Nevada Virginia | Consolidated Edison Development |
Schedule of Equity Method Investments [Line Items] |
Income (loss) | 41
Net income (loss) | 31
Tax Equity Projects | Tax equity investor |
Schedule of Equity Method Investments [Line Items] |
Income (loss) | (11)
Net income (loss) | (8)
Tax Equity Projects | Consolidated Edison Development |
Schedule of Equity Method Investments [Line Items] |
Income (loss) | 51
Net income (loss) | $ 38

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