v2.4.0.6
Loans and Allowance for Credit Losses, PCI, Accretable Yield (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 36 Months Ended
Mar. 31, 2012
Dec. 31, 2011
Change in accretable yield related to PCI loans [Abstract]    
Total, beginning of period $ 15,961 $ 10,447
Addition of accretable yield due to acquisitions 0 128
Accretion into interest income (514) (7,199)
Accretion into noninterest income due to sales 0 (237)
Reclassification from nonaccretable difference for loans with improving credit-related cash flows 235 4,213
Changes in expected cash flows that do not affect nonaccretable difference 81 8,609
Total, end of period $ 15,763 $ 15,961