Expenses - Schedule of Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Expenses [Abstract]
Professional services	$ 375	$ 334	$ 364
Sales advertising and public relations	99	73	77
Regulatory fees and assessments	83	69	61
Securities processing	63	34	41
Bank operations	41	12	18
Donations	27	2	20
Other	387	372	384
Total other expenses	$ 1,075	$ 896	$ 965