Pension Benefit Plans (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
U.S Pension Plans
Components of net periodic pension cost
Service cost		$ 4	$ 4	$ 8	$ 8
Interest cost		20	25	40	49
Expected asset return		(33)	(38)	(66)	(76)
Amortization:
Actuarial loss		15	16	29	31
Net periodic pension cost		6	7	11	12
Increase in pension liability	$ 60
Non-U.S. Pension Plans
Components of net periodic pension cost
Service cost		4	5	8	9
Interest cost		11	13	22	26
Expected asset return		(18)	(21)	(36)	(42)
Amortization:
Actuarial loss		5	5	10	10
Net periodic pension cost		$ 2	$ 2	$ 4	$ 3