Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net Revenues
Interest revenue	[1]	$ 6,531	$ 7,580	$ 6,680
Interest expense	[1]	(418)	(1,064)	(857)
Net interest revenue	[1]	6,113	6,516	5,823
Other	[1]	332	242	178
Total net revenues	[1]	11,691	10,721	10,132
Expenses Excluding Interest
Compensation and benefits	[1]	3,954	3,320	3,057
Professional services	[1]	843	702	654
Occupancy and equipment	[1]	703	559	496
Advertising and market development	[1]	326	307	313
Communications	[1]	353	253	242
Depreciation and amortization	[2]	414	322	277
Amortization of acquired intangible assets	[1]	190	27	29
Regulatory fees and assessments	[1]	163	122	189
Other	[1]	445	261	313
Total expenses excluding interest	[1]	7,391	5,873	5,570
Income before taxes on income	[1]	4,300	4,848	4,562
Taxes on income	[1]	1,001	1,144	1,055
Net Income	[1]	3,299	3,704	3,507
Preferred stock dividends and other	[1],[3]	256	178	178
Net Income Available to Common Stockholders	[1]	$ 3,043	$ 3,526	$ 3,329
Weighted-Average Common Shares Outstanding:
Basic (in shares)	[1]	1,429	1,311	1,348
Diluted (in shares)	[1]	1,435	1,320	1,361
Earnings Per Share, Basic and Diluted [Abstract]
Basic (USD per share)	[1],[4]	$ 2.13	$ 2.69	$ 2.47
Diluted (USD per share)	[1],[4]	$ 2.12	$ 2.67	$ 2.45
Asset Management and administration fees [Member]
Net Revenues
Revenues from contracts with customers	[1],[5]	$ 3,475	$ 3,211	$ 3,229
Trading revenue [Member]
Net Revenues
Revenues from contracts with customers	[1]	1,416	752	902
Bank Deposit Account Fees [Member]
Net Revenues
Revenues from contracts with customers	[1]	355	$ 0	$ 0
Fee Waivers [Member]
Net Revenues
Revenues from contracts with customers		$ 127

[1] Certain prior year amounts have been reclassified to conform to the current year presentation. See Note 1 for additional information.

[2] Certain prior year amounts have been reclassified to conform to the current year presentation. See Note 1 for additional information.

[3] Includes preferred stock dividends and undistributed earnings and dividends allocated to non-vested restricted stock units.

[4] For the year ended December 31, 2020, the Company had voting and nonvoting common stock outstanding. As the participation rights, including dividend and liquidation rights, are identical between the voting and nonvoting stock classes, basic and diluted earnings per share are the same for each class. See Notes 19 and 25 for additional information.

[5] Includes fee waivers of $127 million for the year ended December 31, 2020.