Commitments, Contingencies and Guarantees (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Commitments to extend credit
Commitment, Contingencies and Guarantees disclosures
Commitments	$ 34,724
Issued standby and commercial letters of credit
Commitment, Contingencies and Guarantees disclosures
Commitments	5,887
Maximum term	1 year
Carrying value	4.4
Other commitments
Commitment, Contingencies and Guarantees disclosures
Commitments	$ 180