Income Taxes (Schedule of Loss Carryforwards and Tax Credits Available) (Details) $ in Millions	12 Months Ended
Dec. 31, 2025 USD ($)
United States [Member]
Tax Credit Carryforward [Line Items]
Net operating losses (federal)	$ 629
United States [Member] \| General Business Credits [Member]
Tax Credit Carryforward [Line Items]
Other Tax Carryforward, Gross Amount	$ 271
United States [Member] \| General Business Credits [Member] \| Minimum [Member]
Tax Credit Carryforward [Line Items]
Other Tax Carryforward, Expiration Dates	Dec. 31, 2032
United States [Member] \| General Business Credits [Member] \| Maximum [Member]
Tax Credit Carryforward [Line Items]
Other Tax Carryforward, Expiration Dates	Dec. 31, 2045
United States [Member] \| Foreign Tax Credits [Member]
Tax Credit Carryforward [Line Items]
Other Tax Carryforward, Gross Amount	$ 22
Other Tax Carryforward, Expiration Dates	Dec. 31, 2035
United States [Member] \| CAMT credits
Tax Credit Carryforward [Line Items]
Other Tax Carryforward, Gross Amount	$ 2
Canada [Member] \| Capital Loss Carryforward [Member]
Tax Credit Carryforward [Line Items]
Other Tax Carryforward, Gross Amount	$ 3,005

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-3

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