|
Fair Value Measurements - Nonrecurring Fair Value Inputs (Details) (Nonrecurring [Member], Level 3 [Member], USD $)
In Millions, unless otherwise specified |
6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
Instruments Backed by Residential Real Estate Assets [Member]
Loans and Securities [Member]
Discounted cash flow, Market comparables [Member]
|
Dec. 31, 2013
Instruments Backed by Residential Real Estate Assets [Member]
Loans and Securities [Member]
Discounted cash flow, Market comparables [Member]
|
Jun. 30, 2014
Instruments Backed by Residential Real Estate Assets [Member]
Loans and Securities [Member]
Market Comparables [Member] [Domain]
Minimum [Member]
|
Dec. 31, 2013
Instruments Backed by Residential Real Estate Assets [Member]
Loans and Securities [Member]
Market Comparables [Member] [Domain]
Minimum [Member]
|
Jun. 30, 2014
Instruments Backed by Residential Real Estate Assets [Member]
Loans and Securities [Member]
Market Comparables [Member] [Domain]
Maximum [Member]
|
Dec. 31, 2013
Instruments Backed by Residential Real Estate Assets [Member]
Loans and Securities [Member]
Market Comparables [Member] [Domain]
Maximum [Member]
|
Jun. 30, 2014
Instruments Backed by Residential Real Estate Assets [Member]
Loans and Securities [Member]
Market Comparables [Member] [Domain]
Weighted average [Member]
|
Dec. 31, 2013
Instruments Backed by Residential Real Estate Assets [Member]
Loans and Securities [Member]
Market Comparables [Member] [Domain]
Weighted average [Member]
|
|
| Fair Value Inputs Assets and Liabilities, Quantitative Information [Line Items] | ||||||||||
| Instruments backed by residential real estate assets | $ 3,244 | $ 5,240 | ||||||||
| Loans and leases | $ 3,244 | $ 4,489 | $ 3,244 | $ 5,240 | ||||||
| Fair Value Inputs [Abstract] | ||||||||||
| Discount Rate | 0.00% | 0.00% | 28.00% | 19.00% | 10.00% | 8.00% | ||||
| Cost to sell | 8.00% | 8.00% | 8.00% | 8.00% |