Deposits (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
U.S. offices:
Noninterest-bearing	$ 323,058	$ 228,555
Interest-bearing
Demand	50,418	33,368
Savings	356,567	334,632
Time (included $3,669 and $2,733 at fair value)	77,655	87,237
Total interest-bearing deposits	484,640	455,237
Total deposits in U.S. offices	807,698	683,792
Non-U.S. offices:
Noninterest-bearing	14,724	10,917
Interest-bearing
Demand	194,754	174,417
Savings	891	607
Time (included $1,147 and $1,636 at fair value)	74,641	60,636
Total interest-bearing deposits	270,286	235,660
Total deposits in non-U.S. offices	285,010	246,577
Total deposits	1,092,708	930,369
Fair value
Interest-bearing
Time (included $3,669 and $2,733 at fair value)	3,669	2,733
Interest-bearing
Time (included $1,147 and $1,636 at fair value)	$ 1,147	$ 1,636