Pension Plans, Postretirement and Other Employee Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
US Pension
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during the period	$ 1	$ 0	$ 1	$ 1
Interest cost	4	4	13	13
Expected return on plan assets	(6)	(5)	(18)	(17)
Net amortization:
Actuarial loss	2	1	6	5
Prior service cost (credit)	0	0	0	0
Net pension and postretirement costs	1	0	2	2
Foreign Pension
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during the period	2	3	6	7
Interest cost	4	2	11	11
Expected return on plan assets	(5)	(6)	(15)	(16)
Net amortization:
Actuarial loss	1	3	5	6
Prior service cost (credit)	1	1	1	1
Net pension and postretirement costs	3	3	8	9
US Postretirement
Defined Benefit Plan Disclosure [Line Items]
Service cost — benefits earned during the period	0	0	0	0
Interest cost	1		4	4
Expected return on plan assets	0	0	0	0
Net amortization:
Actuarial loss	2	2	4	4
Prior service cost (credit)	(1)	(1)	(1)	(3)
Net pension and postretirement costs	$ 2	$ 1	$ 7	$ 5