Segment Information (Financial Information for Reportable Segments) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net Revenues
Net interest revenue		$ 2,290	$ 2,544	$ 5,060	$ 4,727
Total net revenues		4,656	5,093	9,772	9,765
Expenses Excluding Interest		2,965	2,819	5,971	5,652
Income before taxes on income		1,691	2,274	3,801	4,113
Asset management and administration fees [Member]
Net Revenues
Revenues from contracts with customers	[1]	1,173	1,052	2,291	2,120
Trading revenue [Member]
Net Revenues
Revenues from contracts with customers		803	885	1,695	1,848
Bank deposit account fees [Member]
Net Revenues
Revenues from contracts with customers		175	352	326	646
Other [Member]
Net Revenues
Revenues from contracts with customers		215	260	400	424
Investor Services [Member]
Net Revenues
Net interest revenue		1,705	1,834	3,738	3,408
Total net revenues		3,543	3,774	7,406	7,300
Expenses Excluding Interest		2,191	2,111	4,424	4,242
Income before taxes on income		1,352	1,663	2,982	3,058
Investor Services [Member] | Asset management and administration fees [Member]
Net Revenues
Revenues from contracts with customers		841	763	1,646	1,544
Investor Services [Member] | Trading revenue [Member]
Net Revenues
Revenues from contracts with customers		701	763	1,476	1,607
Investor Services [Member] | Bank deposit account fees [Member]
Net Revenues
Revenues from contracts with customers		140	227	239	427
Investor Services [Member] | Other [Member]
Net Revenues
Revenues from contracts with customers		156	187	307	314
Advisor Services [Member]
Net Revenues
Net interest revenue		585	710	1,322	1,319
Total net revenues		1,113	1,319	2,366	2,465
Expenses Excluding Interest		774	708	1,547	1,410
Income before taxes on income		339	611	819	1,055
Advisor Services [Member] | Asset management and administration fees [Member]
Net Revenues
Revenues from contracts with customers		332	289	645	576
Advisor Services [Member] | Trading revenue [Member]
Net Revenues
Revenues from contracts with customers		102	122	219	241
Advisor Services [Member] | Bank deposit account fees [Member]
Net Revenues
Revenues from contracts with customers		35	125	87	219
Advisor Services [Member] | Other [Member]
Net Revenues
Revenues from contracts with customers		$ 59	$ 73	$ 93	$ 110

[1] No fee waivers were recognized for the three and six months ended June 30, 2023. Includes fee waivers of $3 million and $57 million for the three and six months ended June 30, 2022, respectively.