Held-for-Sale Treatment of the Clean Energy Businesses - Additional Information (Details) $ in Millions	Mar. 31, 2025 MWh	Jan. 31, 2025 USD ($)	Mar. 31, 2024 MWh	Mar. 01, 2023 USD ($) MWh project	Oct. 01, 2022 USD ($)
Disposal Group, Held-for-sale, Not Discontinued Operations | Clean Energy Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration from sale of business | $				$ 3,993	$ 6,800
Electric Energy (MWh)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notional amount | MWh	29,654,925
Broken Bow II | Disposal Group, Held-for-sale, Not Discontinued Operations | Clean Energy Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration from sale of business | $		$ 54
Clean Energy Businesses | Broken Bow II | Disposal Group, Held-for-sale, Not Discontinued Operations | Clean Energy Businesses
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of projects | project				3
Clean Energy Businesses | Broken Bow II | Electric Energy (MWh)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deferred projects | project				1
Notional amount | MWh			75	75