Employee Benefit Plans - Schedule of the Weighted-Average Asset Allocations of the Pension Plans (Details)	Dec. 31, 2017	Dec. 31, 2016
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocation (as a percent)	100.00%	100.00%
Non-US Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocation (as a percent)	100.00%	100.00%
Equity Securities | U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocation (as a percent)	48.00%	25.00%
Equity Securities | Non-US Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocation (as a percent)	35.60%	33.70%
Fixed Income | U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocation (as a percent)	48.30%	74.40%
Fixed Income | Non-US Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocation (as a percent)	31.60%	31.10%
Other | U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocation (as a percent)	3.70%	0.60%
Other | Non-US Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocation (as a percent)	32.80%	35.20%