Segment Reporting (Results of Business) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net interest income	$ 10,647	$ 9,946	$ 9,965
Noninterest income	8,564	6,955	6,874
Total revenue	19,211	16,901	16,839
Provision for (recapture of) credit losses	(779)	3,175	773
Depreciation and amortization	1,066	983	1,035
Other noninterest expense	11,936	9,314	9,539
Income from continuing operations before income taxes and noncontrolling interests	6,988	3,429	5,492
Income tax expense (benefit)	1,263	426	901
Net income from continuing operations	5,725	3,003	4,591
Less: Net income attributable to noncontrolling interests	51	41	49
Net income (loss) from continuing operations excluding noncontrolling interests	5,674	2,962	4,542
Average Assets	523,166	449,295	400,335
Retail Banking
Segment Reporting Information [Line Items]
Noninterest income	2,796	2,519	2,648
Retail Banking | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	6,206	5,609	5,520
Noninterest income	2,796	2,519	2,648
Total revenue	9,002	8,128	8,168
Provision for (recapture of) credit losses	(101)	968	517
Depreciation and amortization	293	251	230
Other noninterest expense	6,623	5,768	5,781
Income from continuing operations before income taxes and noncontrolling interests	2,187	1,141	1,640
Income tax expense (benefit)	508	266	377
Net income from continuing operations	1,679	875	1,263
Less: Net income attributable to noncontrolling interests	31	31	50
Net income (loss) from continuing operations excluding noncontrolling interests	1,648	844	1,213
Average Assets	106,331	97,643	92,959
Corporate & Institutional Banking
Segment Reporting Information [Line Items]
Noninterest income	3,783	3,062	2,537
Corporate & Institutional Banking | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	4,526	3,999	3,637
Noninterest income	3,783	3,062	2,537
Total revenue	8,309	7,061	6,174
Provision for (recapture of) credit losses	(646)	2,088	284
Depreciation and amortization	208	197	198
Other noninterest expense	3,271	2,659	2,615
Income from continuing operations before income taxes and noncontrolling interests	5,476	2,117	3,077
Income tax expense (benefit)	1,138	433	629
Net income from continuing operations	4,338	1,684	2,448
Less: Net income attributable to noncontrolling interests	14	10
Net income (loss) from continuing operations excluding noncontrolling interests	4,324	1,674	2,448
Average Assets	188,470	183,189	164,243
Asset Management Group
Segment Reporting Information [Line Items]
Noninterest income	987	854	991
Asset Management Group | Operating Segments
Segment Reporting Information [Line Items]
Net interest income	476	357	288
Noninterest income	987	854	991
Total revenue	1,463	1,211	1,279
Provision for (recapture of) credit losses	(7)	21	(1)
Depreciation and amortization	23	45	62
Other noninterest expense	918	813	877
Income from continuing operations before income taxes and noncontrolling interests	529	332	341
Income tax expense (benefit)	123	77	79
Net income from continuing operations	406	255	262
Net income (loss) from continuing operations excluding noncontrolling interests	406	255	262
Average Assets	11,677	8,186	7,360
Other
Segment Reporting Information [Line Items]
Net interest income	(561)	(19)	520
Noninterest income	998	520	698
Total revenue	437	501	1,218
Provision for (recapture of) credit losses	(25)	98	(27)
Depreciation and amortization	542	490	545
Other noninterest expense	1,124	74	266
Income from continuing operations before income taxes and noncontrolling interests	(1,204)	(161)	434
Income tax expense (benefit)	(506)	(350)	(184)
Net income from continuing operations	(698)	189	618
Less: Net income attributable to noncontrolling interests	6		(1)
Net income (loss) from continuing operations excluding noncontrolling interests	(704)	189	619
Average Assets	$ 216,688	$ 160,277	$ 135,773