Lines of Businesses- Contribution of Segments to Overall Profitability (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended						9 Months Ended
	Sep. 30, 2014		Jun. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Segment Reporting Information [Line Items]
Net (income) attributable to noncontrolling interests	$ (23)		$ (17)		$ (8)		$ (60)		$ (64)
Fee and other revenue	3,867	[1]	3,009	[2]	3,003	[3],[4]	9,775	[5]	9,126	[3],[6]
Investment Management funds
Segment Reporting Information [Line Items]
Income of consolidated investment management funds	39		46		32		121		147
Net (income) attributable to noncontrolling interests	(23)		(17)		(8)		(60)		(63)
Fee and other revenue	$ 16		$ 29		$ 24		$ 61		$ 84

[1] Both total fee and other revenue and total revenue include income from consolidated investment management funds of $39 million, net of noncontrolling interests of $23 million, for a net impact of $16 million. Income before taxes is net of noncontrolling interests of $23 million.

[2] Both total fee and other revenue and total revenue include income from consolidated investment management funds of $46 million, net of noncontrolling interests of $17 million, for a net impact of $29 million. Income before taxes is net of noncontrolling interests of $17 million.

[3] Consolidated results and Other segment results have been restated to reflect the retrospective application of adopting new accounting guidance in the first quarter of 2014 related to our investments in qualified affordable housing projects (ASU 2014-01). See Note 2 of the Notes to Consolidated Financial Statements for additional information.

[4] Both total fee and other revenue and total revenue include income from consolidated investment management funds of $32 million, net of noncontrolling interests of $8 million, for a net impact of $24 million. Income before taxes is net of noncontrolling interests of $8 million.

[5] Both total fee and other revenue and total revenue include income from consolidated investment management funds of $121 million, net of noncontrolling interests of $60 million, for a net impact of $61 million. Income before taxes is net of noncontrolling interests of $60 million.

[6] Both total fee and other revenue and total revenue include income from consolidated investment management funds of $147 million, net of noncontrolling interests of $63 million, for a net impact of $84 million. Income before taxes is net of noncontrolling interests of $63 million.