Deposits (Summary of Deposits Disclosure) (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Noninterest-bearing deposits	$ 22,507	$ 20,637
Interest-bearing deposits	85,557	86,576
Total deposits	108,064	107,213
Interest Checking [Member]
Interest-bearing deposits	3,733	4,050
Other Client Deposits [Member]
Interest-bearing deposits	56,921	54,040
Client Certificates of Deposit [Member]
Interest-bearing deposits	20,399	21,317
Other Interest-Bearing Deposits [Member]
Interest-bearing deposits	$ 4,504	$ 7,169