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Bank Premises and Equipment (Tables)
12 Months Ended
Dec. 31, 2011
Bank Premises and Equipment

The following is a summary of bank premises and equipment at December 31:

($ in millions) Estimated Useful Life 20112010
Land and improvements  $834 797
Buildings 5 to 50 yrs. 1,623 1,593
Equipment 3 to 20 yrs. 1,318 1,296
Leasehold improvements 3 to 40 yrs. 394 393
Construction in progress   140 92
Accumulated depreciation and amortization   (1,862) (1,782)
Total   $2,4472,389
      
Annual Future Minimum Payments under Capital Leases and Noncancelable Operating Leases

The following table provides the annual future minimum payments under capital leases and noncancelable operating leases at December 31, 2011:

($ in millions) Operating LeasesCapital Leases
Year ended December 31,   
2012$9212
2013 875
2014 824
2015 783
2016 711
Thereafter 4411
Total minimum lease payments$85126
Less: Amounts representing interest  -3
Present value of net minimum lease payments  -23