Other Assets - Tax Credit Investments Expenses and Related Income Tax Credits and Other Tax Benefits (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Other Assets [Abstract] | |||
| Proportional amortization recognized in tax provision | $ (233) | $ (193) | $ (185) |
| Investment Program, Proportional Amortization Method, Applied, Amortization Expense, Statement of Income or Comprehensive Income [Extensible Enumeration] | Income tax provision | Income tax provision | Income tax provision |
| 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 provision | Income tax provision | Income tax provision |
| Income tax credits and Other income tax benefits (a) recognized in tax provision | $ 276 | $ 221 | $ 204 |