Other Assets - Tax Credit Investments Expenses and Related Income Tax Credits and Other Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Proportional amortization recognized in tax provision	$ 185	$ 161	$ 226
Equity method expenses recognized in Other, net expenses	0	9	13
Income tax credits and Other income tax benefits (a) recognized in tax provision	$ 204	$ 196	$ 182