Pension Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
U.S Pension Plans
Components of net periodic pension cost
Service cost	$ 4	$ 6	$ 8	$ 12
Interest cost	25	24	49	48
Expected asset return	(38)	(42)	(76)	(84)
Amortization:
Actuarial loss	16	19	31	38
Net periodic pension cost	7	7	12	14
Increase in pension liability			60
Non-U.S. Pension Plans
Components of net periodic pension cost
Service cost	5	5	9	9
Interest cost	13	12	26	24
Expected asset return	(21)	(21)	(42)	(42)
Amortization:
Actuarial loss	5	5	10	10
Net periodic pension cost	$ 2	$ 1	$ 3	$ 1