Bank Premises and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Summary of Bank Premises and Equipment

The following table provides a summary of bank premises and equipment as of December 31:

($ in millions)	Estimated Useful Life			2020		2019
Land and improvements(a)				$	636	639
Buildings(a)	1	-	30 years	1,612		1,575
Equipment	2	-	20 years	2,302		2,126
Leasehold improvements	1	-	30 years	467		432
Construction in progress(a)				108		85
Bank premises and equipment held for sale:
Land and improvements				27		8
Buildings				8		18
Equipment				—		1
Accumulated depreciation and amortization				(3,072)		(2,889)
Total bank premises and equipment				$	2,088	1,995

(a)At December 31, 2020 and 2019, land and improvements, buildings and construction in progress included $46 and $51, respectively, associated with parcels of undeveloped land intended for future branch expansion.