Variable Interest Entities (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Consolidated Assets
Interest Bearing Deposits in Banks	$ 2,353	$ 4,329
Loans Held for Investment, net	71,810	67,744
Other assets	5,034	4,854
Consolidated Liabilities
Other Liabilities	1,666	1,675
Consolidated VIEs
Consolidated Assets
Interest Bearing Deposits in Banks	14
Loans Held for Investment, net	712
Other assets	352
Total assets	1,078
Consolidated Liabilities
Long-Term Debt	4
Other Liabilities	83
Total Liabilities	87
Consolidated VIEs | Low-income housing credit investments
Consolidated Assets
Interest Bearing Deposits in Banks	9
Other assets	251
Total assets	260
Consolidated Liabilities
Long-Term Debt	4
Total Liabilities	4
Number of LIHC investment fund	2
Consolidated VIEs | Leasing investments
Consolidated Assets
Interest Bearing Deposits in Banks	5
Loans Held for Investment, net	712
Other assets	101
Total assets	818
Consolidated Liabilities
Other Liabilities	83
Total Liabilities	$ 83