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Bank Premises and Equipment (Tables)
12 Months Ended
Dec. 31, 2018
Bank Premises and Equipment  
Bank Premises and Equipment
The following table provides a summary of bank premises and equipment as of December 31:
($ in millions)Estimated Useful Life20182017
Land and improvements(a)$586644
Buildings(a)2 - 30 yrs.1,5471,679
Equipment2 - 20 yrs.1,9871,876
Leasehold improvements1 - 30 yrs.403399
Construction in progress(a)8193
Bank premises and equipment held for sale:
Land and improvements2517
Buildings149
Equipment31
Accumulated depreciation and amortization(2,785)(2,715)
Total bank premises and equipment$1,8612,003

(a) At December 31, 2018 and 2017, land and improvements, buildings and construction in progress included $55 and $91, respectively, associated with parcels of undeveloped land intended for future branch expansion.

Annual Future Minimum Payments under Capital Leases and Noncancelable Operating Leases
The following table provides the annual future minimum payments under noncancelable operating leases and capital leases for the years ending December 31:
($ in millions)Noncancelable Operating LeasesCapital Leases
2019$866
2020805
2021674
2022604
202354-
Thereafter2561
Total minimum lease payments$60320
Less: Amounts representing interest-2
Present value of net minimum lease payments$-18