Income Taxes (Narrative) (Details) $ in Millions	9 Months Ended
Sep. 30, 2026 USD ($)
Income Tax Disclosure [Abstract]
Alternative minimum tax	$ 14
Proceeds from transfer of tax credits	71
Nuclear production and other tax credits additional cash received	$ 22

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-6

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant