Line Of Business Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Segment Reporting Information [Line Items]
Lines of business	2
Servicing fees	$ 1,078,000,000	$ 1,095,000,000
Management fees	236,000,000	236,000,000
Trading services	280,000,000	302,000,000
Securities finance	97,000,000	66,000,000
Processing fees and other	94,000,000	92,000,000
Total fee revenue	1,785,000,000	1,791,000,000
Net interest revenue	625,000,000	577,000,000
Gains (Losses) related to investment securities, net	11,000,000	(7,000,000)
Total revenue	2,421,000,000	2,361,000,000
Provision for loan losses	0	(1,000,000)
Expenses from operations	1,799,000,000	1,683,000,000
Acquisition and restructuring costs	21,000,000	19,000,000
Litigation settlement costs	15,000,000	0
Total expenses	1,835,000,000	1,702,000,000
Income before income tax expense	586,000,000	660,000,000
Average assets	188,200,000,000	158,600,000,000
Investment Servicing [Member]
Segment Reporting Information [Line Items]
Servicing fees	1,078,000,000	1,095,000,000
Management fees	0	0
Trading services	280,000,000	302,000,000
Securities finance	88,000,000	59,000,000
Processing fees and other	60,000,000	69,000,000
Total fee revenue	1,506,000,000	1,525,000,000
Net interest revenue	604,000,000	548,000,000
Gains (Losses) related to investment securities, net	11,000,000	(7,000,000)
Total revenue	2,121,000,000	2,066,000,000
Provision for loan losses	0	(1,000,000)
Expenses from operations	1,563,000,000	1,448,000,000
Acquisition and restructuring costs	0	0
Litigation settlement costs	0	0
Total expenses	1,563,000,000	1,448,000,000
Income before income tax expense	558,000,000	619,000,000
Pre-tax margin	26.00%	30.00%
Average assets	184,100,000,000	154,000,000,000
Investment Management [Member]
Segment Reporting Information [Line Items]
Management fees	236,000,000	236,000,000
Trading services	0	0
Securities finance	9,000,000	7,000,000
Processing fees and other	34,000,000	23,000,000
Total fee revenue	279,000,000	266,000,000
Net interest revenue	21,000,000	29,000,000
Gains (Losses) related to investment securities, net	0	0
Total revenue	300,000,000	295,000,000
Provision for loan losses	0	0
Expenses from operations	236,000,000	235,000,000
Acquisition and restructuring costs	0	0
Litigation settlement costs	0	0
Total expenses	236,000,000	235,000,000
Income before income tax expense	64,000,000	60,000,000
Pre-tax margin	21.00%	20.00%
Average assets	4,100,000,000	4,600,000,000
Other [Member]
Segment Reporting Information [Line Items]
Acquisition and restructuring costs	21,000,000	19,000,000
Litigation settlement costs	15,000,000	0
Total expenses	36,000,000	19,000,000
Income before income tax expense	$ (36,000,000)	$ (19,000,000)