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Accounting Policies - Reclassifications Out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items] |  |
Other income (expense), net | $ (8,228) | $ 2,586
Income tax expense | (18,523) | (26,124)
Interest expense, net | (44,569) | (20,284)
Net (loss) income | (4,013) | 87,457
Reclassification out of Accumulated Other Comprehensive Income | Pension and post retirement benefit plans |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items] |  |
Other income (expense), net | 726 | 718
Income tax expense | (174) | (198)
Net (loss) income | 552 | 520
Reclassification out of Accumulated Other Comprehensive Income | Amortization of initial net obligation and prior service cost |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items] |  |
Other income (expense), net | (366) | (375)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of net loss |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items] |  |
Other income (expense), net | 1,092 | 1,093
Reclassification out of Accumulated Other Comprehensive Income | Derivative contracts |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items] |  |
Income tax expense | 0 | (231)
Interest expense, net | 0 | 679
Net (loss) income | $ 0 | $ 448

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