Line of Business Information - Summary of Line of Business (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Servicing fees	$ 5,087	$ 5,531	$ 5,157
Management fees	1,939	2,053	1,880
Foreign exchange trading services	1,376	1,211	1,363
Securities finance	416	416	356
Software and processing fees	789	738	685
Other fee revenue	(1)	63	58
Total fee revenue	9,606	10,012	9,499
Net interest income	2,544	1,905	2,200
Total other income	(2)	110	4
Total revenue	12,148	12,027	11,703
Provision for credit losses	20	(33)	88
Total expenses	8,801	8,889	8,716
Income before income tax expense	$ 3,327	$ 3,171	$ 2,899
Pre-tax margin	27.00%	26.00%	25.00%
Average assets (in billions)	$ 286,400	$ 299,700	$ 269,300
Operating Segments | Investment Servicing
Segment Reporting Information [Line Items]
Servicing fees	5,087	5,531	5,157
Management fees	0	0	0
Foreign exchange trading services	1,271	1,149	1,299
Securities finance	397	402	342
Software and processing fees	789	738	685
Other fee revenue	46	59	31
Total fee revenue	7,590	7,879	7,514
Net interest income	2,551	1,919	2,211
Total other income	(2)	(1)	4
Total revenue	10,139	9,797	9,729
Provision for credit losses	20	(33)	88
Total expenses	7,260	7,182	7,071
Income before income tax expense	$ 2,859	$ 2,648	$ 2,570
Pre-tax margin	28.00%	27.00%	26.00%
Average assets (in billions)	$ 283,200	$ 296,500	$ 266,400
Operating Segments | Investment Management
Segment Reporting Information [Line Items]
Servicing fees	0	0	0
Management fees	1,939	2,053	1,880
Foreign exchange trading services	82	62	64
Securities finance	19	14	14
Software and processing fees	0	0	0
Other fee revenue	(47)	4	27
Total fee revenue	1,993	2,133	1,985
Net interest income	(7)	(14)	(11)
Total other income	0	0	0
Total revenue	1,986	2,119	1,974
Provision for credit losses	0	0	0
Total expenses	1,396	1,445	1,471
Income before income tax expense	$ 590	$ 674	$ 503
Pre-tax margin	30.00%	32.00%	25.00%
Average assets (in billions)	$ 3,200	$ 3,200	$ 2,900
Other
Segment Reporting Information [Line Items]
Servicing fees	0	0	0
Management fees	0	0	0
Foreign exchange trading services	23	0	0
Securities finance	0	0	0
Software and processing fees	0	0	0
Other fee revenue		0	0
Total fee revenue	23	0	0
Net interest income	0	0	0
Total other income	0	111	0
Total revenue	23	111	0
Provision for credit losses	0	0	0
Total expenses	145	262	174
Income before income tax expense	$ (122)	$ (151)	$ (174)