Segment Reporting (Segment Reporting Table) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net interest income	$ 2,804	$ 2,348
Noninterest income	1,888	1,872
Total revenue	4,692	4,220
Provision for (recapture of) credit losses	(208)	(551)
Depreciation and amortization	277	234
Other noninterest expense	2,895	2,340
Income (loss) before income taxes (benefit) and noncontrolling interests	1,728	2,197
Income taxes (benefit)	299	371
Net income	1,429	1,826
Less: Net income attributable to noncontrolling interests	21	10
Net income excluding noncontrolling interests	1,408	1,816
Average Assets	550,096	468,220
Retail Banking
Segment Reporting Information [Line Items]
Noninterest income	745	654
Retail Banking | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	1,531	1,362
Noninterest income	745	654
Total revenue	2,276	2,016
Provision for (recapture of) credit losses	(81)	(257)
Depreciation and amortization	74	63
Other noninterest expense	1,818	1,413
Income (loss) before income taxes (benefit) and noncontrolling interests	465	797
Income taxes (benefit)	109	183
Net income	356	614
Less: Net income attributable to noncontrolling interests	16	7
Net income excluding noncontrolling interests	340	607
Average Assets	111,754	92,891
Corporate & Institutional Banking
Segment Reporting Information [Line Items]
Noninterest income	804	807
Corporate & Institutional Banking | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	1,143	991
Noninterest income	804	807
Total revenue	1,947	1,798
Provision for (recapture of) credit losses	(118)	(282)
Depreciation and amortization	52	47
Other noninterest expense	785	664
Income (loss) before income taxes (benefit) and noncontrolling interests	1,228	1,369
Income taxes (benefit)	268	308
Net income	960	1,061
Less: Net income attributable to noncontrolling interests	4	3
Net income excluding noncontrolling interests	956	1,058
Average Assets	200,724	170,531
Asset Management Group
Segment Reporting Information [Line Items]
Noninterest income	248	229
Asset Management Group | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	138	93
Noninterest income	248	229
Total revenue	386	322
Provision for (recapture of) credit losses	2	(9)
Depreciation and amortization	6	4
Other noninterest expense	245	198
Income (loss) before income taxes (benefit) and noncontrolling interests	133	129
Income taxes (benefit)	31	30
Net income	102	99
Less: Net income attributable to noncontrolling interests
Net income excluding noncontrolling interests	102	99
Average Assets	13,801	8,873
Other
Segment Reporting Information [Line Items]
Net interest income	(8)	(98)
Noninterest income	91	182
Total revenue	83	84
Provision for (recapture of) credit losses	(11)	(3)
Depreciation and amortization	145	120
Other noninterest expense	47	65
Income (loss) before income taxes (benefit) and noncontrolling interests	(98)	(98)
Income taxes (benefit)	(109)	(150)
Net income	11	52
Less: Net income attributable to noncontrolling interests	1
Net income excluding noncontrolling interests	10	52
Average Assets	$ 223,817	$ 195,925