v2.4.0.8
Fair Value, Option, Carrying Amount (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Fair Value, Option, Quantitative Disclosures [Line Items]    
Mortgages held for sale $ 35,402 $ 42,305
Loans held for sale 2 6
Loans 6,088 6,206
Other assets 595 0
Long-term debt 0 (1)
Mortgages held for sale [Member]
   
Fair Value, Option, Quantitative Disclosures [Line Items]    
Mortgages held for sale 35,402 42,305
Mortgages held for sale, Unpaid principal 36,098 41,183
Loans, Loans held for sale and Mortgages held for sale, aggregate difference (696) 1,122
Nonaccrual loans 269 309
Nonaccrual loans, Unpaid principal 473 655
Nonaccrual loans, Aggregate difference (204) (346)
Loans 90 days or more past due and still accruing 41 49
Loans 90 days or more past due and still accruing, Unpaid principal 52 64
Loans 90 days or more past due and still accruing, Aggregate difference (11) (15)
Loans held for sale [Member]
   
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for sale 2 6
Loans, Unpaid principal 9 10
Loans, Loans held for sale and Mortgages held for sale, aggregate difference (7) (4)
Nonaccrual loans 2 2
Nonaccrual loans, Unpaid principal 9 6
Nonaccrual loans, Aggregate difference (7) (4)
Loans [Member]
   
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans 6,088 6,206
Loans, Unpaid principal 5,706 5,669
Loans, Loans held for sale and Mortgages held for sale, aggregate difference 382 537
Nonaccrual loans 117 89
Nonaccrual loans, Unpaid principal 118 89
Nonaccrual loans, Aggregate difference (1) 0
Other Assets [Member]
   
Fair Value, Option, Quantitative Disclosures [Line Items]    
Other assets 595 0
Other Assets, Unpaid principal n/a n/a
Other assets, aggregate difference n/a n/a
Long-term debt [Member]
   
Fair Value, Option, Quantitative Disclosures [Line Items]    
Long-term debt 0 (1)
Long-term debt, Unpaid principal (199) (1,157)
Long-term debt, Aggregate differences $ 199 $ 1,156