Pension Plans, Postretirement and Other Employee Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
US Pension
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during the period	$ 0	$ 0
Interest cost	3	4
Expected return on plan assets	(4)	(6)
Net amortization:
Actuarial loss	1	2
Net pension and postretirement costs	0	0
Foreign Pension
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during the period	2	2
Interest cost	3	4
Expected return on plan assets	(4)	(5)
Net amortization:
Actuarial loss	2	2
Net pension and postretirement costs	3	3
US Postretirement
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during the period	0	0
Interest cost	1	1
Expected return on plan assets	0	0
Net amortization:
Actuarial loss	1	1
Net pension and postretirement costs	$ 2	$ 2