v2.4.0.6
Earnings per Common Share Textuals (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Basic and Diluted Earnings per Common Share [Line Items]      
Accelerated accretion     $ 1,900,000,000
Less: Preferred stock dividends and other 844,000,000 730,000,000 4,285,000,000
Series D Preferred Stock [Member]
     
Basic and Diluted Earnings per Common Share [Line Items]      
Less: Preferred stock dividends and other     3,500,000,000
Series J - 8.00% Non-Cumulative Perpetual Class A Preferred Stock [Member]
     
Basic and Diluted Earnings per Common Share [Line Items]      
Preferred stock dividends 844,000,000    
Series K - 7.98% Fixed-to-Floating Non-Cumulative Perpetual Class A Preferred Stock [Member]
     
Basic and Diluted Earnings per Common Share [Line Items]      
Preferred stock dividends   737,000,000  
Series L - 7.50% Non-Cumulative Perpetual Convertible Class A Preferred Stock [Member]
     
Basic and Diluted Earnings per Common Share [Line Items]      
Preferred stock dividends     $ 804,000,000