Significant Credit Concentrations (Details) - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Maximum Credit Exposure by Category
On-balance sheet	$ 213	$ 172
Individuals
Maximum Credit Exposure by Category
On-balance sheet	156	131
Financial Services
Maximum Credit Exposure by Category
On-balance sheet	36	24
Other
Maximum Credit Exposure by Category
On-balance sheet	17	15
U.S. Government and agencies
Maximum Credit Exposure by Category
On-balance sheet	4	2
United States | Individuals
Maximum Credit Exposure by Category
On-balance sheet	129	108
Outside the United States | Individuals
Maximum Credit Exposure by Category
On-balance sheet	$ 27	$ 23