Revenue from Contracts with Customers - Disaggregation of Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [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
Operating Segments | Investment Servicing
Disaggregation of Revenue [Line Items]
Topic 606 revenue	6,282	6,643	6,255
All other revenue	3,857	3,154	3,474
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
Operating Segments | Investment Servicing | Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	5,087	5,531	5,157
All other revenue	0	0	0
Servicing fees	5,087	5,531	5,157
Operating Segments | Investment Servicing | Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	0	0
Management fees	0	0	0
Operating Segments | Investment Servicing | Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	363	342	377
All other revenue	908	807	922
Foreign exchange trading services	1,271	1,149	1,299
Operating Segments | Investment Servicing | Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	233	235	225
All other revenue	164	167	117
Securities finance	397	402	342
Operating Segments | Investment Servicing | Software and processing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	599	535	496
All other revenue	190	203	189
Software and processing fees	789	738	685
Operating Segments | Investment Servicing | Other fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	46	59	31
Other fee revenue	46	59	31
Operating Segments | Investment Servicing | Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	6,282	6,643	6,255
All other revenue	1,308	1,236	1,259
Total fee revenue	7,590	7,879	7,514
Operating Segments | Investment Servicing | Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	2,551	1,919	2,211
Net interest income	2,551	1,919	2,211
Operating Segments | Investment Servicing | Total other income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	(2)	(1)	4
Total other income	(2)	(1)	4
Operating Segments | Investment Management
Disaggregation of Revenue [Line Items]
Topic 606 revenue	2,021	2,115	1,944
All other revenue	(35)	4	30
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
Operating Segments | Investment Management | Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	0	0
Servicing fees	0	0	0
Operating Segments | Investment Management | Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	1,939	2,053	1,880
All other revenue	0	0	0
Management fees	1,939	2,053	1,880
Operating Segments | Investment Management | Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	82	62	64
All other revenue	0	0	0
Foreign exchange trading services	82	62	64
Operating Segments | Investment Management | Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	19	14	14
Securities finance	19	14	14
Operating Segments | Investment Management | Software and processing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	0	0
Software and processing fees	0	0	0
Operating Segments | Investment Management | Other fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue		0	0
All other revenue	(47)	4	27
Other fee revenue	(47)	4	27
Operating Segments | Investment Management | Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	2,021	2,115	1,944
All other revenue	(28)	18	41
Total fee revenue	1,993	2,133	1,985
Operating Segments | Investment Management | Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	(7)	(14)	(11)
Net interest income	(7)	(14)	(11)
Operating Segments | Investment Management | Total other income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	0	0
Total other income	0	0	0
Other
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	23	111	0
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
Other | Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	0	0
Servicing fees	0	0	0
Other | Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	0	0
Management fees	0	0	0
Other | Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	23	0	0
Foreign exchange trading services	23	0	0
Other | Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	0	0
Securities finance	0	0	0
Other | Software and processing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	0	0
Software and processing fees	0	0	0
Other | Other fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	0	0
Other fee revenue	0	0	0
Other | Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	23	0	0
Total fee revenue	23	0	0
Other | Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	0	0
Net interest income	0	0	0
Other | Total other income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0
All other revenue	0	111	0
Total other income	$ 0	$ 111	$ 0