Segment Information (Financial Information for Reportable Segments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net Revenues:
Asset management and administration fees	$ 611	$ 552
Net interest revenue	553	469
Trading revenue	247	223
Other	68	56
Provision for loan losses	(1)	(6)
Net impairment losses on securities		(4)	[1]
Total net revenues	1,478	1,290
Expenses Excluding Interest	956	959
Income before taxes on income	522	331
Taxes on income	196	125
Net Income	326	206
Investor Services [Member]
Net Revenues:
Asset management and administration fees	428	387
Net interest revenue	495	413
Trading revenue	171	149
Other	51	42
Provision for loan losses	(1)	(5)
Net impairment losses on securities		(4)
Total net revenues	1,144	982
Expenses Excluding Interest	738	751
Income before taxes on income	406	231
Advisor Services [Member]
Net Revenues:
Asset management and administration fees	183	165
Net interest revenue	58	56
Trading revenue	76	74
Other	17	14
Provision for loan losses		(1)
Total net revenues	334	308
Expenses Excluding Interest	218	208
Income before taxes on income	$ 116	$ 100

[1] There were no net impairment losses on securities for the three months ended March 31, 2014. Net impairment losses on securities include total other-than-temporary impairment losses of $0 million recognized in other comprehensive income, net of $(4) million reclassified from other comprehensive income, for the three months ended March 31, 2013.