Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Details)

v2.4.0.6
Earnings Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Basic earnings per common share:        
Net income $ 167,767 $ 143,391 $ 473,743 $ 415,755
Preferred stock dividends, deemed dividend and accretion of discount (7,983) (7,703) (24,016) (23,110)
Net income applicable to common shareholders 159,784 135,688 449,727 392,645
Average common shares issued and outstanding 857,871,000 863,911,000 861,543,000 863,542,000
Basic earnings per common share $ 0.19 $ 0.16 $ 0.52 $ 0.45
Diluted earnings per common share        
Net income applicable to common shareholders 159,784 135,688 449,727 392,645
Effect of assumed preferred stock conversion 7,983 7,703 24,016 23,110
Net income applicable to diluted earnings per share $ 159,784 $ 135,688 $ 449,727 $ 392,645
Average common shares issued and outstanding 857,871,000 863,911,000 861,543,000 863,542,000
Dilutive potential common shares:        
Stock options and restricted stock units 4,479,000 2,646,000 4,007,000 2,938,000
Shares held in deferred compensation plans 1,238,000 1,076,000 1,218,000 966,000
Dilutive potential common shares: 5,717,000 3,722,000 5,225,000 3,904,000
Total diluted average common shares issued and outstanding 863,588,000 867,633,000 866,768,000 867,446,000
Diluted earnings (loss) per common share $ 0.19 $ 0.16 $ 0.52 $ 0.45
Stock Options [Member]
        
Earnings Loss Per Share (Textuals) [Abstract]        
Options outstanding to purchase common stock shares having antidilutive effect 23,500,000 24,600,000 25,200,000 13,900,000