Other Assets (Schedule of Other Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
Property and equipment at cost	$ 2,331	$ 2,139
Accumulated depreciation	(1,063)	(955)
Net property and equipment	1,268	1,184
Investment in qualified affordable housing projects	1,520	1,378
Net deferred tax assets	1,255	254
Nonmarketable equity investments	1,130	998
Goodwill	822	822	$ 343
Accrued interest, fees, and rent receivables	702	600
Restricted cash held for securitization trusts	639	516
Equity-method investments	576	472
Other accounts receivable	159	127
Operating lease right-of-use assets	115	148
Net intangible assets	104	129
Restricted cash and cash equivalents	79	92
Other assets	974	1,337
Total other assets	$ 9,343	$ 8,057
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total other assets	Total other assets