Net Periodic Pension and Postretirement Benefit Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Anticipated cash contributions
Anticipated cash contributions to pension plans in 2017			$ 3
United States Pension Plan of US Entity, Defined Benefit
Components of Net Periodic Benefit Costs
Service cost	$ 2	$ 2	3	$ 4
Interest cost	3	3	6	6
Expected return on plan assets	(5)	(5)	(10)	(10)
Net periodic benefit cost/Net postretirement benefit costs			(1)
Employer Contributions
Cash contributions to defined benefit pension plan			1
Anticipated cash contributions
Anticipated cash contributions to pension plans in 2017			1
Foreign Pension Plan, Defined Benefit
Components of Net Periodic Benefit Costs
Service cost	1	1	2	2
Interest cost	3	3	5	5
Expected return on plan assets	(2)	(3)	(5)	(5)
Amortization of actuarial loss			1	1
Settlement loss		1		1
Net periodic benefit cost/Net postretirement benefit costs	2	2	3	4
Employer Contributions
Cash contributions to defined benefit pension plan			1
Anticipated cash contributions
Anticipated cash contributions to pension plans in 2017			2
Other Postretirement Benefit Plan, Defined Benefit
Components of Net Periodic Benefit Costs
Interest cost	1	1	2	2
Amortization of prior service credit	$ (1)	$ (1)	$ (2)	$ (2)