Pensions Benefit Plans and Other Postretirement Benefits - Components of Net Periodic Pension and Postretirement Cost (Income) (Details) - USD ($) $ in Millions		12 Months Ended
	Oct. 01, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefit Plans
Amortization:
Accumulated benefit obligation		$ 3,126	$ 3,306
U.S Pension Plans
Components of net periodic pension cost
Service cost		15	24	$ 22
Interest cost		90	96	105
Expected asset return		(149)	(170)	(176)
Amortization:
Actuarial loss		67	74	68
Net amortization		67	74	68
Net periodic pension cost		23	24	19
Settlement cost		98		30
Non-U.S. Pension Plans
Components of net periodic pension cost
Service cost		16	15	23
Interest cost		44	44	69
Expected asset return		(65)	(67)	(86)
Amortization:
Actuarial loss		13	15	18
Net amortization		13	15	18
Net periodic pension cost		8	7	24
Settlement cost	$ 35			3
U.S Postretirement Benefit Plans
Components of net periodic pension cost
Interest cost		4	4	5
Amortization:
Actuarial loss		1	2	2
Prior service cost		(7)	(8)	(8)
Net amortization		(6)	(6)	(6)
Net periodic pension cost		(2)	(2)	(1)
Non-U.S. Postretirement Benefit Plans
Components of net periodic pension cost
Service cost		1	1	1
Interest cost		3	3	4
Amortization:
Net periodic pension cost		$ 4	$ 4	$ 5