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Other Noncurrent Liabilities (Detail) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Jun. 30, 2015
Payables and Accruals [Abstract]      
Benefit plan liabilities $ 208,982 $ 195,916 $ 209,880
Noncurrent tax liabilities 100,528 106,584 163,390
Other 152,405 169,139 166,617
Total other noncurrent liabilities $ 461,915 $ 471,639 $ 539,887