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Other Noncurrent Liabilities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Sep. 30, 2015
Payables and Accruals [Abstract]      
Benefit plan liabilities $ 179,979 $ 195,916 $ 203,251
Noncurrent tax liabilities 96,447 106,584 164,915
Other 178,008 169,139 163,314
Total other noncurrent liabilities $ 454,434 $ 471,639 $ 531,480