Pension and Other Postretirement Benefits (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Pension settlement charge	$ 9		$ 12
Pension Benefits - U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	5	$ 2	12	$ 11
Interest cost	12	16	37	47
Expected return on plan assets	(23)	(25)	(68)	(75)
Recognized net loss	12	13	37	38
Net periodic cost	6	6	18	21
Pension Benefits - Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	6	6	17	19
Interest cost	25	31	78	94
Expected return on plan assets	(39)	(43)	(121)	(129)
Recognized prior service credit	(3)	(3)	(9)	(10)
Recognized net loss	12	13	38	40
Net periodic cost	1	4	3	14
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	1	1
Interest cost	1	2	3	6
Recognized prior service credit	(11)	(10)	(31)	(27)
Recognized net loss	1	0	3	3
Net periodic cost	$ (8)	$ (7)	$ (24)	$ (17)