Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Operating Lease Payments for Leases

Future minimum operating lease payments for leases with remaining terms greater than one year for each of the years in the five years ending December 31, 2022, and thereafter, in the aggregate, are as follows (in millions):

2018	$	87
2019	79
2020	62
2021	46
2022	28
Thereafter	42
Total	$	344