Disposal Group, Including Discontinued Operation, Maximum Indemnification Obligation

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- Definition

Disposal Group, Including Discontinued Operation, Non Controlling Interest, Variable Interest Entities

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Facilities Sale Agreement, Number Of Facilities Agreed To Sell

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Facilities Sale Agreement, Purchase Agreement, Duration

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Net Income (Loss) Attributable to Noncontrolling Interest, Impairment Charges

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- Definition

Number Of Disposal Groups Held For Sale

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- Definition

Regulatory Commitment Estimated Amount

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- Definition

Variable Interest Entity, Maximum Capacity

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- Definition

Amount of other-than-temporary decline in value that has been recognized against investment accounted for under equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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Amount expected to be recognized in earnings for the specified restructuring cost.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Exit Activities and Asset Sales (Narrative) (Details) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2025 facility	Sep. 30, 2026 USD ($) group MW	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) group	Sep. 30, 2025 USD ($)	Jul. 31, 2026 USD ($)	Feb. 17, 2026 USD ($)	Dec. 31, 2025 USD ($)
Restructuring Cost and Reserve [Line Items]
Facilities agreed to sell \| facility	13
Duration of purchase agreement (in years)	30 years
Amount of regulatory commitment assets						$ 270
Impairment			$ 0	$ 102	$ 0
Temporary impairment charges		$ 33	$ 0	$ 33	$ 0
NorthStar Clean Energy Strategic Divestments
Restructuring Cost and Reserve [Line Items]
Number of disposal groups \| group		4		4
NorthStar Clean Energy Strategic Divestments \| Disposal Group, Held-for-Sale, Not Discontinued Operations
Restructuring Cost and Reserve [Line Items]
Expected cost		$ 10		$ 10
Impairment		(102)		(102)
Noncontrolling interest associated with VIEs held for sale		479		479
Discontinued operation, maximum obligation		180		180
Temporary impairment charges		33		33
Variable Interest Entity, Primary Beneficiary \| NorthStar Clean Energy Strategic Divestments \| Disposal Group, Held-for-Sale, Not Discontinued Operations
Restructuring Cost and Reserve [Line Items]
Impairment charges		454		454
Loss on sale of long-lived assets		$ 15		15
Variable Interest Entity, Primary Beneficiary \| Delta Solar Equity Holdings
Restructuring Cost and Reserve [Line Items]
Nameplate capacity (in MW) \| MW		24
Variable Interest Entity, Primary Beneficiary \| Delta Solar Equity Holdings \| Disposal Group, Held-for-Sale, Not Discontinued Operations
Restructuring Cost and Reserve [Line Items]
Loss on sale of long-lived assets		$ 15
Variable Interest Entity, Not Primary Beneficiary \| NorthStar Clean Energy Strategic Divestments \| Disposal Group, Held-for-Sale, Not Discontinued Operations
Restructuring Cost and Reserve [Line Items]
Investments		$ 18		$ 18				$ 54
Retention Benefits \| J.H. Campbell Generating Units
Restructuring Cost and Reserve [Line Items]
Expected cost							$ 4