Leases (Tables)

12 Months Ended

Dec. 31, 2018

Leases [Abstract]

Schedule of Commitments Relating to Noncancellable Operating Leases

Commitments relating to noncancellable operating leases for each of the next five years and thereafter are as follows (dollars in millions):

For the Year Ended December 31,
2019	$	320
2020		304
2021		256
2022		203
2023		154
Thereafter		1,007
		2,244
Less sublease income		(25	)
	$	2,219