Rental Expense and Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2017

Leases, Operating [Abstract]

Schedule of Minimum Rental Payments Under Operating Leases

The approximate minimum rental payments required under operating leases that have initial or remaining non-cancelable lease terms in excess of one year at December 31, 2017 are:

(Dollars in Millions)

2018	2019	2020	2021	2022	After 2022	Total
$227	184	143	106	76	103	839