Lease Arrangements (Tables)

12 Months Ended

Dec. 31, 2017

Leases [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

The Company has non-cancelable operating leases for facilities through 2029. Future minimum lease payments and sublease proceeds under these leases with initial or remaining terms in excess of one year, including leases associated with restructuring activities, are as follows (dollars in millions):

	Operating Lease Commitments(1)
Years ending December 31,
2018	$	27
2019	29
2020	23
2021	21
2022	12
Thereafter	45
Total future minimum lease payments	$	157
Sublease proceeds	(2		)
Net lease commitments	$	155

(1) Excludes minimum lease payments and sublease proceeds on the Alpharetta, Georgia lease, which is accounted for as a financing.