Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Nonrecurring Fair Value Inputs (Details)

v2.4.0.6
Fair Value Measurements - Nonrecurring Fair Value Inputs (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Jun. 30, 2012
Fair Value, Inputs, Level 3 [Member]
Fair Value, Measurements, Nonrecurring [Member]
Jun. 30, 2011
Fair Value, Inputs, Level 3 [Member]
Fair Value, Measurements, Nonrecurring [Member]
Jun. 30, 2012
Discounted Cash Flow Market Comparables [Member]
Loans and Securities [Member]
Instruments Backed by Residential Real Estate Assets [Member]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Measurements, Nonrecurring [Member]
Jun. 30, 2012
Discounted Cash Flow Market Comparables [Member]
Loans and Securities [Member]
Minimum [Member]
Instruments Backed by Residential Real Estate Assets [Member]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Measurements, Nonrecurring [Member]
Jun. 30, 2012
Discounted Cash Flow Market Comparables [Member]
Loans and Securities [Member]
Maximum [Member]
Instruments Backed by Residential Real Estate Assets [Member]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]              
Loans and Securities Fair Value Disclosure         $ 8,041    
Loans Held-for-sale, Fair Value Disclosure 10,187 7,630 1,139 1,779 1,139    
Loans and leases     $ 6,902 [1] $ 9,437 [1] $ 6,902    
Fair Value Inputs, Yield           4.00% 7.00%
Fair Value Inputs, Prepayment Rate           3.00% 27.00%
Fair Value Inputs, Probability of Default           0.00% 61.00%
Fair Value Inputs, Loss Severity           0.00% 62.00%
Fair Value Inputs, Discount Rate           0.00% 28.00%
Fair Value Inputs, Cost to Sell         8.00%    
[1] Gains (losses) represent charge-offs on real estate-secured loans.