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Retirement Plans - Defined Benefit Plan, Weighted-Average Assumptions Used in Calculating Net Periodic Benefit Cost (Detail)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Non-U.S. Pension Plans [Member]      
Weighted-Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 2.25% 1.93% 1.80%
Return on plan assets 3.11% 2.75% 2.64%
Increases in compensation levels 3.20% 2.70% 2.63%
United States [Member]      
Weighted-Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]      
Discount rate 4.41% 3.96% 4.28%
Return on plan assets 6.25% 4.35% 6.53%