Other Assets - Tax Credit Investments Expenses and Related Income Tax Credits and Other Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Proportional amortization recognized in tax provision	$ 193	$ 185	$ 161
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
Equity method expenses recognized in Other, net expenses	$ 0	$ 0	$ 9
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	$ 221	$ 204	$ 196