Quarterly report pursuant to Section 13 or 15(d)

Other Comprehensive Income (Reclassifications) (Details 1)

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Other Comprehensive Income (Reclassifications) (Details 1) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Interest income - held-to-maturity securities - taxable $ 23,320 $ 9,838
Gain (Loss) on Sale of Securities, Net 16,970 187
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net 0 696
Interest income - loans and leases 402,522 406,879
Noninterest income - other income 30,999 37,984
Other Noninterest Expense 51,045 35,666
Transisition obligation 4,789 3,831
Income before income taxes 201,240 208,403
Income Tax Expense (Benefit) 52,097 55,129
Net income applicable to common shareholders 141,179 145,304
Interest Income, Securities, Taxable 38,456 40,185
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
    
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Interest income - held-to-maturity securities - taxable 175 55
Gain (Loss) on Sale of Securities, Net 15,200 187
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net 0 (696)
Income before income taxes 15,375 (454)
Income Tax Expense (Benefit) (5,381) 159
Net income applicable to common shareholders 9,994 (295)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Interest Rate Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
    
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Interest income - loans and leases 2,892 3,916
Noninterest income - other income 0 110
Other Noninterest Expense 0 0
Income before income taxes 2,892 4,026
Income Tax Expense (Benefit) (1,012) (1,410)
Net income applicable to common shareholders 1,880 2,616
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
    
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Net actuarial gains (losses) (888) (9,954)
Prior service costs 0 1,727
Income before income taxes (888) (8,227)
Income Tax Expense (Benefit) 311 2,879
Net income applicable to common shareholders $ (577) $ (5,348)