Premises and Equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Premises and Equipment

11. Premises and Equipment

Premises and equipment at December 31, 2017, and December 31, 2016, consisted of the following:

		December 31,
dollars in millions	Useful life (in years)	2017			2016
Land	Indefinite	$	138		$	139
Buildings and improvements	15-40	741			727
Leasehold improvements	1-15	633			663
Furniture and equipment	2-15	931			943
Capitalized building leases	1-15(a)	27			27
Construction in process	N/A	38			42
Total premises and equipment		2,508			2,541
Less: Accumulated depreciation and amortization		(1,578		)	(1,563		)
Premises and equipment, net		$	930		$	978

(a) Capitalized building and equipment leases are amortized over the lesser of the useful life of asset or lease term.

Depreciation and amortization expense related to premises and equipment for the years ended December 31, 2017, December 31, 2016, and December 31, 2015 was $138 million, $123 million, and $120 million, respectively. This includes amortization of assets under capital leases.