Pension Plans (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
U.S. [Member]
Defined Benefit Plan Net Periodic Benefit Cost Abstract
Service cost	$ 3	$ 3
Interest cost	10	10
Expected return on plan assets	(17)	(17)
Amortization of prior service cost	1	2
Amortization of net loss	5	5
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	(4)	0
Total pension cost	6	3
Defined Benefit Pension Contributions Disclosure [Abstract]
Pension employer contributions	12
Pension estimated future employer contributions remainder of fiscal year	2
Foreign [Member]
Defined Benefit Plan Net Periodic Benefit Cost Abstract
Service cost	4	3
Interest cost	99	78
Expected return on plan assets	(73)	(50)
Amortization of prior service cost	0	0
Amortization of net loss	10	4
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	0	0
Total pension cost	40	$ 35
Defined Benefit Pension Contributions Disclosure [Abstract]
Pension employer contributions	40
Pension estimated future employer contributions remainder of fiscal year	$ 119