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v3.25.4

Income Taxes (Schedule of Loss Carryforwards and Tax Credits Available) (Details) $ in Millions | 12 Months Ended
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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

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