Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Details)

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Earnings Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Basic earnings per common share:        
Net income $ 164,619 $ 151,000 $ 313,762 $ 304,274
Preferred stock dividends, deemed dividend and accretion of discount (7,963) (7,967) (15,927) (15,937)
Net income applicable to common shareholders 156,656 143,033 297,835 288,337
Average common shares issued and outstanding 821,546,000 834,730,000 825,603,000 837,917,000
Basic earnings per common share $ 0.19 $ 0.17 $ 0.36 $ 0.34
Diluted earnings per common share        
Net income applicable to common shareholders 156,656 143,033 297,835 288,337
Effect of assumed preferred stock conversion 7,963 7,967 15,927 15,937
Net income applicable to diluted earnings per share $ 156,656 $ 143,033 $ 297,835 $ 288,337
Average common shares issued and outstanding 821,546,000 834,730,000 825,603,000 837,917,000
Dilutive potential common shares:        
Stock options and restricted stock units 11,395,000 7,758,000 11,426,000 7,019,000
Shares held in deferred compensation plans 1,245,000 1,352,000 1,249,000 1,338,000
Other 501,000 0 268,000 0
Dilutive potential common shares: 13,141,000 9,110,000 12,943,000 8,357,000
Total diluted average common shares issued and outstanding 834,687,000 843,840,000 838,546,000 846,274,000
Diluted earnings (loss) per common share $ 0.19 $ 0.17 $ 0.36 $ 0.34
Earnings Loss Per Share (Textuals) [Abstract]        
Options outstanding to purchase common stock shares having antidilutive effect 3,100,000 11,200,000 2,600,000 11,100,000