Premises, Equipment and Leasehold Improvements (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Premises, Equipment and Leasehold Improvements

Premises, equipment and leasehold improvements, stated at cost less accumulated depreciation and amortization, were as follows:

Table 65: Premises, Equipment and Leasehold Improvements

In millions	December 31 2017			December 31 2016
Premises, equipment and leasehold     improvements	$	10,939		$	10,410
Accumulated depreciation and     amortization	(5,503		)	(4,888		)
Net book value	$	5,436		$	5,522

Depreciation And Amortization Expense

Table 66: Depreciation and Amortization Expense

Year ended December 31 In millions	2017		2016		2015
Depreciation	$	743	$	683	$	643
Amortization	56		46		40
Total depreciation and amortization	$	799	$	729	$	683

Lease Rental Expense

Table 67: Lease Rental Expense

Year ended December 31 In millions	2017		2016		2015
Lease rental expense	$	431	$	442	$	460

Minimum Annual Lease Rentals

Future minimum annual rentals are as follows:

Table 68: Minimum Annual Lease Rentals

In millions
2018	$	382
2019	$	343
2020	$	302
2021	$	260
2022	$	217
2023 and thereafter	$	1,051