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Other Comprehensive Income (Loss) (Components of Other Comprehensive Income (Loss)) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Components of Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Foreign currency translation adjustment, gross | $ 35,455 | $ 84,500 | $ (67,349) | $ 155,153
Other comprehensive income (loss), gross total | 39,082 | 90,698 | (50,805) | 158,903
Foreign currency translation adjustment, tax |  |  |  |
Income tax (benefit) expense related to items of other comprehensive income loss | (985) | (4,016) | (4,405) | (1,123)
Amounts reclassified, net of tax |  |  | (1,721) | 3,433
Changes in fair value, net of tax |  |  | 13,860 | (806)
Foreign currency translation adjustment, net | 35,455 | 84,500 | (67,349) | 155,153
Other comprehensive income (loss), total, net of tax | 38,097 | 86,682 | (55,210) | 157,780
Interest Rate Swap [Member] |  |  |  |
Components of Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Amounts reclassified, gross | 4,279 | 511 | 2,407 | 2,352
Changes in fair value, gross | 863 | 2,181 | 15,828 | 305
Amounts reclassified, tax effect | (1,134) | (135) | (638) | (623)
Changes in fair value, tax effect | (229) | (2,542) | (4,194) | (81)
Amounts reclassified, net of tax | 3,145 | 376 | 1,769 | 1,729
Changes in fair value, net of tax | 634 | (361) | 11,634 | 224
Fuel [Member] | Commodity Contract [Member] |  |  |  |
Components of Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Amounts reclassified, gross | (1,810) | 789 | (4,647) | 2,765
Changes in fair value, gross | 295 | 2,717 | 2,956 | (1,672)
Amounts reclassified, tax effect | 451 | (302) | 1,157 | (1,061)
Changes in fair value, tax effect | (73) | (1,037) | (730) | 642
Amounts reclassified, net of tax | (1,359) | 487 | (3,490) | 1,704
Changes in fair value, net of tax | $ 222 | $ 1,680 | $ 2,226 | $ (1,030)

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