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Other Assets - Schedule of Proportional Amortization Investment (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Other Assets [Abstract] |  |  |  |
Tax credits and other tax benefits from proportional amortization investments | $ 91,000,000 | $ 106,000,000 | $ 249,000,000 | $ 215,000,000
Investment amortization expense recognized as a component of income tax expense | 73,000,000 | 86,000,000 | 198,000,000 | 174,000,000
Net benefit from proportional amortization investments | $ 18,000,000 | $ 20,000,000 | $ 51,000,000 | $ 41,000,000
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration] | Income tax expense from continuing operations | Income tax expense from continuing operations | Income tax expense from continuing operations | Income tax expense from continuing operations
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, after Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration] | Income tax expense from continuing operations | Income tax expense from continuing operations | Income tax expense from continuing operations | Income tax expense from continuing operations
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] | Income tax expense from continuing operations | Income tax expense from continuing operations | Income tax expense from continuing operations | Income tax expense from continuing operations
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, before Amortization, Statement of Cash Flows [Extensible Enumeration] | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities
Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Cash Flows [Extensible Enumeration] | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, after Amortization, Statement of Cash Flows [Extensible Enumeration] | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities | Increase (Decrease) in Deferred Income Taxes, Increase (Decrease) in Other Operating Assets, Other liabilities
Investment program, proportional amortization method, elected, impairment loss | $ 0 | $ 0 | $ 0 | $ 0

X
- Definition Amount of impairment loss for investment that generates income tax credit and other income tax benefit under tax credit program elected to be accounted for using proportional amortization method. Includes, but is not limited to, investment under tax credit program not meeting condition for accounting under proportional amortization method. + References Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/740-323-50-2 + Details
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