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 net periodic pension 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 net periodic pension 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