Annual report pursuant to Section 13 and 15(d)

Premises and Equipment (Details)

v2.4.0.6
Premises and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Property, Plant and Equipment, Net, by Type [Abstract]      
Property, Plant and Equipment, Gross $ 1,388,910 $ 1,353,047  
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment (771,653) (788,618)  
Property, Plant and Equipment, Net 617,257 564,429  
Property Plant and Equipment Income Statement Disclosures [Abstract]      
Total Depreciation And Amotization Of Premises And Equipment 76,170 70,413 64,934
Rental Income Credited To Occupancy Expense 11,519 10,878 10,108
Land and Land Improvements [Member]
      
Property, Plant and Equipment, Net, by Type [Abstract]      
Property, Plant and Equipment, Gross 127,280 123,312  
Building [Member]
      
Property, Plant and Equipment, Net, by Type [Abstract]      
Property, Plant and Equipment, Gross 393,674 375,603  
Leaseholds and Leasehold Improvements [Member]
      
Property, Plant and Equipment, Net, by Type [Abstract]      
Property, Plant and Equipment, Gross 177,395 218,957  
Equipment [Member]
      
Property, Plant and Equipment, Net, by Type [Abstract]      
Property, Plant and Equipment, Gross $ 690,561 $ 635,175