Net Periodic Pension and Postretirement Benefit Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2017
Pension Plan | Forecast
Anticipated cash contributions
Anticipated cash contributions to pension plans in 2017					$ 5
Pension Plan | US
Components of Net Periodic Benefit Costs
Service cost	$ 1	$ 2	$ 4	$ 5
Interest cost	3	3	9	10
Expected return on plan assets	(5)	(5)	(15)	(15)
Net periodic benefit cost/Net postretirement benefit costs	(1)		(2)
Employer Contributions
Cash contributions to defined benefit pension plan			1
Pension Plan | US | Forecast
Anticipated cash contributions
Anticipated cash contributions to pension plans in 2017					1
Pension Plan | Non-US
Components of Net Periodic Benefit Costs
Service cost	1	1	3	2
Interest cost	3	3	8	8
Expected return on plan assets	(3)	(3)	(8)	(8)
Amortization of actuarial loss			1	1
Settlement loss				2
Net periodic benefit cost/Net postretirement benefit costs	1	1	4	5
Employer Contributions
Cash contributions to defined benefit pension plan			3
Pension Plan | Non-US | Forecast
Anticipated cash contributions
Anticipated cash contributions to pension plans in 2017					$ 4
Postemployment Retirement Benefits
Components of Net Periodic Benefit Costs
Service cost	1		1	1
Interest cost		1	2	2
Amortization of prior service credit		$ (1)	(2)	$ (3)
Net periodic benefit cost/Net postretirement benefit costs	$ 1		$ 1