Pension Benefits Net Periodic Benefit Cost (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Percentage Change in Actuarial Assumptions and Plan Provisions Amortized	10.00%
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	$ 15,000,000
Change in Accounting Method Accounted for as Change in Estimate
Defined Benefit Plan Disclosure [Line Items]
Impact of change in estimation of pension net periodic benefit cost	10,000,000
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service Cost	48,000,000	$ 46,000,000		$ 57,000,000
Interest Cost	54,000,000	63,000,000		77,000,000
Expected Return on Plan Assets	(63,000,000)	(65,000,000)		(77,000,000)
Settlement loss	1,000,000	0	[1]	11,000,000
Curtailment loss (gain)	16,000,000	3,000,000		(3,000,000)
Amortization of actuarial losses	35,000,000	14,000,000		18,000,000
Other costs	0	2,000,000		0
Net Periodic Benefit Cost	91,000,000	63,000,000		83,000,000
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Interest Cost	1,000,000	1,000,000		1,000,000
Amortization of actuarial losses	1,000,000	1,000,000		1,000,000
Net Periodic Benefit Cost	$ 2,000,000	$ 2,000,000		$ 2,000,000

[1] Settlement loss for the year ended December 31, 2015 primarily relates to amounts recognized related to the divestiture of the Company's Reception Systems business, as further described in Note 20. Acquisitions and Divestitures.