Power Generating Capacity Of Electric Generation Portfolio

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
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The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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Acquisitions and Divestitures - 2024 and 2023 Activities (Details) $ in Millions	1 Months Ended				4 Months Ended	5 Months Ended	9 Months Ended
	May 31, 2024 USD ($)	Mar. 31, 2024 USD ($) MW	Apr. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	May 17, 2023 USD ($)	Sep. 30, 2024 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture					$ 0	$ 0	$ 1,398
Gain (loss) on sale of assets, net					$ 0	0	886
ERCOT Asset Sale \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Power generating capacity \| MW		1,710
Proceeds from divestiture	$ 785
Gain (loss) on sale of assets, net	$ 564
Cumulus Data Campus Sale \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture		$ 350
Gain (loss) on sale of assets, net							$ 324
Divestiture consideration		650
Escrow deposit		$ 300
Western Gas Book \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture			$ 15
Gain (loss) on sale of assets, net						15
Pennsylvania Minerals \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture				$ 29
Gain (loss) on sale of assets, net						$ 29