Segment Reporting (Segment Reporting Table) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Net interest income	$ 3,510	$ 3,051	$ 7,095	$ 5,855
Noninterest income	1,783	2,065	3,801	3,953
Total revenue	5,293	5,116	10,896	9,808
Provision for (recapture of) credit losses	146	36	381	(172)
Depreciation and amortization	284	289	565	566
Other noninterest expense	3,088	2,955	6,128	5,850
Income (loss) before income taxes (benefit) and noncontrolling interests	1,775	1,836	3,822	3,564
Income taxes (benefit)	275	340	628	639
Net income from continuing operations	1,500	1,496	3,194	2,925
Less: Net income attributable to noncontrolling interests	17	15	34	36
Net income (loss) excluding noncontrolling interests	1,483	1,481	3,160	2,889
Average Assets	555,507	546,878	558,901	549,127
Retail Banking
Segment Reporting Information [Line Items]
Noninterest income	702	748	1,445	1,493
Retail Banking | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	2,448	1,662	4,729	3,193
Noninterest income	702	748	1,445	1,493
Total revenue	3,150	2,410	6,174	4,686
Provision for (recapture of) credit losses	(14)	55	224	(26)
Depreciation and amortization	81	83	159	157
Other noninterest expense	1,823	1,830	3,672	3,648
Income (loss) before income taxes (benefit) and noncontrolling interests	1,260	442	2,119	907
Income taxes (benefit)	295	105	497	214
Net income from continuing operations	965	337	1,622	693
Less: Net income attributable to noncontrolling interests	11	15	21	31
Net income (loss) excluding noncontrolling interests	954	322	1,601	662
Average Assets	114,826	113,068	115,103	112,415
Corporate & Institutional Banking
Segment Reporting Information [Line Items]
Noninterest income	821	968	1,707	1,772
Corporate & Institutional Banking | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	1,349	1,232	2,732	2,375
Noninterest income	821	968	1,707	1,772
Total revenue	2,170	2,200	4,439	4,147
Provision for (recapture of) credit losses	209	(17)	181	(135)
Depreciation and amortization	53	51	107	103
Other noninterest expense	868	883	1,753	1,668
Income (loss) before income taxes (benefit) and noncontrolling interests	1,040	1,283	2,398	2,511
Income taxes (benefit)	218	277	512	545
Net income from continuing operations	822	1,006	1,886	1,966
Less: Net income attributable to noncontrolling interests	5	3	10	7
Net income (loss) excluding noncontrolling interests	817	1,003	1,876	1,959
Average Assets	234,174	219,513	234,354	210,171
Asset Management Group
Segment Reporting Information [Line Items]
Noninterest income	228	234	458	482
Asset Management Group | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	125	153	252	291
Noninterest income	228	234	458	482
Total revenue	353	387	710	773
Provision for (recapture of) credit losses	(10)	5	(1)	7
Depreciation and amortization	7	8	13	14
Other noninterest expense	273	262	547	507
Income (loss) before income taxes (benefit) and noncontrolling interests	83	112	151	245
Income taxes (benefit)	20	26	36	57
Net income from continuing operations	63	86	115	188
Less: Net income attributable to noncontrolling interests
Net income (loss) excluding noncontrolling interests	63	86	115	188
Average Assets	15,562	14,449	15,282	14,126
Other
Segment Reporting Information [Line Items]
Net interest income	(412)	4	(618)	(4)
Noninterest income	32	115	191	206
Total revenue	(380)	119	(427)	202
Provision for (recapture of) credit losses	(39)	(7)	(23)	(18)
Depreciation and amortization	143	147	286	292
Other noninterest expense	124	(20)	156	27
Income (loss) before income taxes (benefit) and noncontrolling interests	(608)	(1)	(846)	(99)
Income taxes (benefit)	(258)	(68)	(417)	(177)
Net income from continuing operations	(350)	67	(429)	78
Less: Net income attributable to noncontrolling interests	1	(3)	3	(2)
Net income (loss) excluding noncontrolling interests	(351)	70	(432)	80
Average Assets	$ 190,945	$ 199,848	$ 194,162	$ 212,415