Deposits - Time Deposits (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Time deposits in denominations of $100,000 or more
U.S. offices	$ 70,008	$ 57,802
Non-U.S. offices	46,890	60,066
Total	116,898	117,868
Maturities of interest bearing time deposits
2013	120,200
2014	4,587
2015	3,408
2016	4,754
2017	1,305
After 5 years	3,085
Total	137,339
U.S.
Maturities of interest bearing time deposits
2013	74,469
2014	3,792
2015	3,374
2016	4,566
2017	1,195
After 5 years	3,020
Total	90,416
Non-U.S.
Maturities of interest bearing time deposits
2013	45,731
2014	795
2015	34
2016	188
2017	110
After 5 years	65
Total	$ 46,923