Pension Benefit Plans (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
U.S Pension Plans
Components of the net pension expense and postretirement benefit cost
Service cost		$ 4	$ 3	$ 11	$ 11
Interest cost		20	23	59	72
Expected asset return		(33)	(37)	(98)	(113)
Amortization:
Actuarial loss		14	16	44	47
Net periodic pension cost		5	5	16	17
Increase in pension liability	$ 60
Non-U.S. Pension Plans
Components of the net pension expense and postretirement benefit cost
Service cost		4	4	12	13
Interest cost		11	12	33	38
Expected asset return		(18)	(19)	(54)	(61)
Amortization:
Actuarial loss		5	5	15	15
Net periodic pension cost		$ 2	$ 2	$ 6	$ 5