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Postretirement Benefits Other Than Pensions - Estimated Benefit Payments for Domestic and Foreign Pension Plans (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2016 $ 26,278
2017 24,476
2018 26,845
2019 27,895
2020 28,562
2021-2025 147,975
U.S. Other Postretirement Benefits [Member]  
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2016 2,063
2017 2,144
2018 2,200
2019 2,246
2020 2,251
2021-2025 11,450
Non-U.S. Other Postretirement Benefits [Member]  
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2016 537
2017 540
2018 541
2019 583
2020 628
2021-2025 3,790
Other Postretirement Benefit Plan [Member]  
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2016 2,600
2017 2,684
2018 2,741
2019 2,829
2020 2,879
2021-2025 $ 15,240