Line of Business Information (Summary of Line of Business Results) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Servicing fees	$ 1,124,000,000	$ 973,000,000	$ 2,219,000,000	$ 1,868,000,000
Management fees	250,000,000	201,000,000	486,000,000	412,000,000
Trading services	311,000,000	326,000,000	613,000,000	568,000,000
Securities finance	137,000,000	109,000,000	203,000,000	181,000,000
Processing fees and other	70,000,000	87,000,000	162,000,000	207,000,000
Total fee revenue	1,892,000,000	1,696,000,000	3,683,000,000	3,236,000,000
Net interest revenue	572,000,000	658,000,000	1,149,000,000	1,319,000,000
Gains (Losses) related to investment securities, net	27,000,000	(50,000,000)	20,000,000	45,000,000
Total revenue	2,491,000,000	2,304,000,000	4,852,000,000	4,600,000,000
Provision for loan losses	2,000,000	10,000,000	1,000,000	25,000,000
Expenses from operations	1,757,000,000	1,489,000,000	3,440,000,000	3,055,000,000
Acquisition and restructuring costs	17,000,000	41,000,000	36,000,000	54,000,000
Securities lending charge		414,000,000		414,000,000
Total expenses	1,774,000,000	1,944,000,000	3,476,000,000	3,523,000,000
Income (Loss) from continuing operations before income taxes	715,000,000	350,000,000	1,375,000,000	1,052,000,000
Average assets	164,300,000,000	151,000,000,000	161,400,000,000	147,000,000,000
Investment Servicing [Member]
Servicing fees	1,124,000,000	973,000,000	2,219,000,000	1,868,000,000
Trading services	311,000,000	326,000,000	613,000,000	568,000,000
Securities finance	116,000,000	84,000,000	175,000,000	142,000,000
Processing fees and other	53,000,000	63,000,000	122,000,000	153,000,000
Total fee revenue	1,604,000,000	1,446,000,000	3,129,000,000	2,731,000,000
Net interest revenue	519,000,000	613,000,000	1,054,000,000	1,240,000,000
Gains (Losses) related to investment securities, net	27,000,000	(50,000,000)	20,000,000	45,000,000
Total revenue	2,150,000,000	2,009,000,000	4,203,000,000	4,016,000,000
Provision for loan losses	2,000,000	10,000,000	1,000,000	25,000,000
Expenses from operations	1,538,000,000	1,291,000,000	2,991,000,000	2,639,000,000
Securities lending charge		75,000,000		75,000,000
Total expenses	1,538,000,000	1,366,000,000	2,991,000,000	2,714,000,000
Income (Loss) from continuing operations before income taxes	610,000,000	633,000,000	1,211,000,000	1,277,000,000
Pre-tax margin	28.00%	32.00%	29.00%	32.00%
Average assets	158,000,000,000	145,200,000,000	155,700,000,000	141,600,000,000
Investment Management [Member]
Management fees	250,000,000	201,000,000	486,000,000	412,000,000
Securities finance	21,000,000	25,000,000	28,000,000	39,000,000
Processing fees and other	17,000,000	24,000,000	40,000,000	54,000,000
Total fee revenue	288,000,000	250,000,000	554,000,000	505,000,000
Net interest revenue	53,000,000	45,000,000	95,000,000	79,000,000
Total revenue	341,000,000	295,000,000	649,000,000	584,000,000
Expenses from operations	219,000,000	198,000,000	449,000,000	416,000,000
Securities lending charge		339,000,000		339,000,000
Total expenses	219,000,000	537,000,000	449,000,000	755,000,000
Income (Loss) from continuing operations before income taxes	122,000,000	(242,000,000)	200,000,000	(171,000,000)
Pre-tax margin	36.00%	(82.00%)	31.00%	(29.00%)
Average assets	6,300,000,000	5,800,000,000	5,700,000,000	5,400,000,000
Other [Member]
Acquisition and restructuring costs	17,000,000	41,000,000	36,000,000	54,000,000
Total expenses	17,000,000	41,000,000	36,000,000	54,000,000
Income (Loss) from continuing operations before income taxes	$ (17,000,000)	$ (41,000,000)	$ (36,000,000)	$ (54,000,000)