Pensions Benefit Plans and Other Postretirement Benefits - Changes in the Benefit Obligation (Details)) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
U.S Pension Plans
Changes in the pension and postretirement benefit obligations
Obligations at beginning of year	$ 2,190	$ 2,428
Change in benefit obligations:
Service cost	15	24	$ 22
Interest cost	90	96	105
Actuarial (gain) loss, including the effect of change in discount rates	36	(107)
Curtailment, settlement, and plan amendment	(200)
Benefit payments	(175)	(252)
Other		1
Net change in benefit obligations	(234)	(238)
Obligations at end of year	1,956	2,190	2,428
Non-U.S. Pension Plans
Changes in the pension and postretirement benefit obligations
Obligations at beginning of year	1,210	1,311
Change in benefit obligations:
Service cost	16	15	23
Interest cost	44	44	69
Actuarial (gain) loss, including the effect of change in discount rates	160	(9)
Acquisitions		37
Participant contributions	2	1
Benefit payments	(71)	(58)
Other	3
Foreign currency translation	(129)	(131)
Net change in benefit obligations	25	(101)
Obligations at end of year	1,235	1,210	1,311
U.S Postretirement Benefit Plans
Changes in the pension and postretirement benefit obligations
Obligations at beginning of year	97	111
Change in benefit obligations:
Interest cost	4	4	5
Actuarial (gain) loss, including the effect of change in discount rates	(1)	(10)
Benefit payments	(9)	(8)
Other	1
Net change in benefit obligations	(5)	(14)
Obligations at end of year	92	97	111
Non-U.S. Postretirement Benefit Plans
Changes in the pension and postretirement benefit obligations
Obligations at beginning of year	68	81
Change in benefit obligations:
Service cost	1	1	1
Interest cost	3	3	4
Actuarial (gain) loss, including the effect of change in discount rates	9	(1)
Benefit payments	(2)	(3)
Foreign currency translation	2	(13)
Net change in benefit obligations	13	(13)
Obligations at end of year	$ 81	$ 68	$ 81