Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Nonrecurring Fair Value (Details)

v2.4.0.6
Fair Value Measurements - Nonrecurring Fair Value (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2013
Fair Value, Measurements, Nonrecurring [Member]
Mar. 31, 2012
Fair Value, Measurements, Nonrecurring [Member]
Mar. 31, 2013
Level 2 [Member]
Fair Value, Measurements, Nonrecurring [Member]
Mar. 31, 2012
Level 2 [Member]
Fair Value, Measurements, Nonrecurring [Member]
Mar. 31, 2013
Level 3 [Member]
Fair Value, Measurements, Nonrecurring [Member]
Mar. 31, 2012
Level 3 [Member]
Fair Value, Measurements, Nonrecurring [Member]
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis                
Loans held-for-sale $ 13,887 $ 11,659     $ 3,902 $ 3,465 $ 795 $ 857
Gains (Losses) on loans held-for-sale     (96) 60        
Loans and leases         20 [1] 21 [1] 3,619 [1] 5,813 [1]
Gains (Losses) on loans and leases     (640) [1] (1,497) [1]        
Foreclosed properties         48 [2]    [2] 1,981 [2] 2,149 [2]
Gains (Losses) on Foreclosed Properties     (19) [2] (67) [2]        
Other assets 23,243 26,490     65    12 14
Gains (Losses) on other assets     $ (6) $ 0        
[1] Losses represent charge-offs on real estate-secured loans
[2] Amounts are included in other assets on the Consolidated Balance Sheet and represent fair value and related losses on foreclosed properties that were written down subsequent to their initial classification as foreclosed properties.