Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Common Share (Details Textual)

v2.4.0.6
Earnings Per Common Share (Details Textual)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Stock Options [Member]
       
Earnings Per Common Share (Textual) [Abstract]        
Average options to purchase shares of common stock 159 213 166 219
Warrants [Member]
       
Earnings Per Common Share (Textual) [Abstract]        
Average options to purchase shares of common stock 272 272 272 272
Series L Preferred Stock [Member] | Mandatorily Convertible [Member]
       
Earnings Per Common Share (Textual) [Abstract]        
Average options to purchase shares of common stock 62 67 62 67
Series T Preferred Stock [Member]
       
Earnings Per Common Share (Textual) [Abstract]        
Average options to purchase shares of common stock     700 77
Incremental Common Shares Attributable to Conversion of Preferred Stock   228