Employee Benefit Plans - Defined Benefit Plans Key Assumptions (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Weighted-average assumptions used to determine benefit obligations:
Discount Rate	2.60%
Rate of compensation increase		3.60%
Minimum
Weighted-average assumptions used to determine periodic benefit cost:
Rate of compensation increase			2.00%
Maximum
Weighted-average assumptions used to determine periodic benefit cost:
Rate of compensation increase			5.00%
Non-U.S.
Weighted-average assumptions used to determine periodic benefit cost:
Expected long-term return on assets	4.10%
Non-U.S. | Minimum
Weighted-average assumptions used to determine benefit obligations:
Discount Rate		2.15%
Weighted-average assumptions used to determine periodic benefit cost:
Discount Rate	2.48%	2.15%	2.60%
Expected long-term return on assets		1.60%	1.60%
Rate of compensation increase		3.60%	3.60%
Non-U.S. | Maximum
Weighted-average assumptions used to determine benefit obligations:
Discount Rate		2.70%
Weighted-average assumptions used to determine periodic benefit cost:
Discount Rate	2.70%	3.90%	3.70%
Expected long-term return on assets		5.00%	4.90%
Rate of compensation increase		4.20%	4.10%
U.S.
Weighted-average assumptions used to determine periodic benefit cost:
Discount Rate		3.09%
Expected long-term return on assets		7.00%	7.50%
U.S. | Minimum
Weighted-average assumptions used to determine benefit obligations:
Discount Rate	2.84%	3.00%
Weighted-average assumptions used to determine periodic benefit cost:
Discount Rate	3.00%		2.98%
Expected long-term return on assets	6.00%
U.S. | Maximum
Weighted-average assumptions used to determine benefit obligations:
Discount Rate	3.66%	4.24%
Weighted-average assumptions used to determine periodic benefit cost:
Discount Rate	4.24%	4.48%	4.38%
Expected long-term return on assets	6.50%