Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets (Details)

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Goodwill and Other Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Goodwill by business segment        
Beginning Balance   $ 522,541    
Goodwill acquired during the period $ 155,828      
Adjustments / Reallocation of goodwill 0      
Goodwill impairment 0 0 $ 3,000  
Ending Balance 678,369 678,369    
Summary of other intangible assets        
Total other intangible assets, gross carrying amount 541,342 541,342   $ 533,142
Total other intangible assets, accumulated amortization (478,637) (478,637)   (458,471)
Total other intangible assets, net of carrying value 62,705 62,705   74,671
Estimated amortization expense of other intangible assets        
2013 7,700 7,700    
2014 14,316 14,316    
2015 12,908 12,908    
2016 11,135 11,135    
2017 9,825 9,825    
2018 and after 3,076 3,076    
Goodwill impairment 0 0 $ 3,000  
Retail & Business Banking [Member]        
Goodwill by business segment        
Beginning Balance   368,097    
Goodwill acquired during the period 0      
Adjustments / Reallocation of goodwill 0      
Goodwill impairment 0      
Ending Balance 368,097 368,097    
Estimated amortization expense of other intangible assets        
Goodwill impairment 0      
Commercial Banking [Member]        
Goodwill by business segment        
Beginning Balance   59,594    
Goodwill acquired during the period 155,828      
Adjustments / Reallocation of goodwill 0      
Goodwill impairment 0      
Ending Balance 215,422 215,422    
Estimated amortization expense of other intangible assets        
Goodwill impairment 0      
AFCRE [Member]        
Goodwill by business segment        
Beginning Balance   0    
Goodwill acquired during the period 0      
Adjustments / Reallocation of goodwill 0      
Goodwill impairment 0      
Ending Balance 0 0    
Estimated amortization expense of other intangible assets        
Goodwill impairment 0      
RBPCG [Member]        
Goodwill by business segment        
Beginning Balance   90,012    
Goodwill acquired during the period 0      
Adjustments / Reallocation of goodwill 0      
Goodwill impairment 0      
Ending Balance 90,012 90,012    
Estimated amortization expense of other intangible assets        
Goodwill impairment 0      
Home Lending [Member]        
Goodwill by business segment        
Beginning Balance   0    
Goodwill acquired during the period 0      
Adjustments / Reallocation of goodwill 0      
Goodwill impairment 0      
Ending Balance 0 0    
Estimated amortization expense of other intangible assets        
Goodwill impairment 0      
Treasury Other [Member]        
Goodwill by business segment        
Beginning Balance   4,838    
Goodwill acquired during the period 0      
Adjustments / Reallocation of goodwill 0      
Goodwill impairment 0      
Ending Balance 4,838 4,838    
Estimated amortization expense of other intangible assets        
Goodwill impairment 0      
Core deposit intangible [Member]        
Summary of other intangible assets        
Total other intangible assets, gross carrying amount 400,058 400,058   400,058
Total other intangible assets, accumulated amortization (382,219) (382,219)   (366,907)
Total other intangible assets, net of carrying value 17,839 17,839   33,151
Customer relationship [Member]        
Summary of other intangible assets        
Total other intangible assets, gross carrying amount 116,120 116,120   107,920
Total other intangible assets, accumulated amortization (71,366) (71,366)   (66,534)
Total other intangible assets, net of carrying value 44,754 44,754   41,386
Other [Member]        
Summary of other intangible assets        
Total other intangible assets, gross carrying amount 25,164 25,164   25,164
Total other intangible assets, accumulated amortization (25,052) (25,052)   (25,030)
Total other intangible assets, net of carrying value $ 112 $ 112   $ 134