Net Periodic Pension and Postretirement Benefit Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Pension Plan, Defined Benefit [Member]
Anticipated cash contributions
Anticipated cash contributions in current year	$ 4		$ 4
Pension Plan, Defined Benefit [Member] | UNITED STATES
Components of Net Periodic Benefit Costs
Service cost	1	$ 2	3	$ 4
Interest cost	2	2	6	8
Expected return on plan assets	(4)	(5)	(13)	(16)
Amortization of actuarial loss	(1)		(1)
Net periodic benefit cost	(2)	(1)	(5)	(4)
Anticipated cash contributions
Anticipated cash contributions in current year	1		1
Employer contributions
Employer contributions			1
Pension Plan, Defined Benefit [Member] | Foreign Pension Plan, Defined Benefit [Member]
Components of Net Periodic Benefit Costs
Service cost	1	1	3	3
Interest cost	2	2	7	8
Expected return on plan assets	(2)	(2)	(6)	(6)
Amortization of actuarial loss	1	1	2	2
Net periodic benefit cost	2	$ 2	6	7
Anticipated cash contributions
Anticipated cash contributions in current year	3		3
Employer contributions
Employer contributions			2
Other Postretirement Benefit Plan, Defined Benefit [Member]
Components of Net Periodic Benefit Costs
Interest cost	1		2	2
Amortization of prior service credit			(1)	(1)
Net periodic benefit cost	$ 1		$ 1	$ 1