Financial Information for the Company's Reportable Segments (Detail) (USD $) In Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Net Revenues:
Asset management and administration fees	$ 466		$ 468		$ 1,470		$ 1,325
Net interest revenue	443		387		1,330		1,110
Trading revenue	248		182		694		624
Other	45		32		119		99
Provision for loan losses	(8)		(3)		(13)		(18)
Net impairment losses on securities	(13)	[1]	(3)	[1]	(22)	[1]	(19)	[1]
Total net revenues	1,181		1,063		3,578		3,121
Expenses Excluding Interest	821	[2]	864	[2]	2,438	[3]	2,571	[3]
Income before taxes on income	360		199		1,140		550
Taxes on income	(140)		(75)		(439)		(215)
Net Income	220		124		701		335
Investor Services
Net Revenues:
Asset management and administration fees	254		255		805		699
Net interest revenue	377		329		1,137		943
Trading revenue	166		121		462		418
Other	25		19		61		53
Provision for loan losses	(7)		(3)		(11)		(16)
Net impairment losses on securities	(12)		(3)		(20)		(17)
Total net revenues	803		718		2,434		2,080
Expenses Excluding Interest	561	[2]	503	[2]	1,662	[3]	1,535	[3]
Income before taxes on income	242		215		772		545
Institutional Services
Net Revenues:
Asset management and administration fees	212		213		665		626
Net interest revenue	66		58		193		167
Trading revenue	82		61		232		206
Other	19		14		57		47
Provision for loan losses	(1)				(2)		(2)
Net impairment losses on securities	(1)				(2)		(2)
Total net revenues	377		346		1,143		1,042
Expenses Excluding Interest	259	[2]	232	[2]	777	[3]	715	[3]
Income before taxes on income	118		114		366		327
Unallocated
Net Revenues:
Other	1		(1)		1		(1)
Total net revenues	1		(1)		1		(1)
Expenses Excluding Interest	1	[2]	129	[2]	(1)	[3]	321	[3]
Income before taxes on income			$ (130)		$ 2		$ (322)

[1] Net impairment losses on securities include total other-than-temporary impairment losses of $2 million and $0 million, net of $(11) million and $(3) million recognized in other comprehensive income, for the three months ended September 30, 2011 and 2010, respectively, and total other-than-temporary impairment losses of $13 million and $41 million, net of $(9) million and $22 million recognized in other comprehensive income, for the nine months ended September 30, 2011 and 2010, respectively.

[2] Unallocated amount includes money market mutual fund charges of $132 million in the third quarter of 2010.

[3] Unallocated amount includes money market mutual fund charges of $132 million and a class action litigation reserve of $196 million in the first nine months of 2010.