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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, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Components of Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Foreign currency translation adjustment, gross | $ 84,500 | $ (16,642) | $ 155,153 | $ (3,991)
Other comprehensive income (loss), gross total | 90,698 | (9,068) | 158,903 | 69
Foreign currency translation adjustment, tax |  |  |  |
Income tax benefit related to items of other comprehensive loss | (4,016) | (2,282) | (1,123) | (922)
Amounts reclassified, net of tax |  |  | 3,433 | 6,193
Changes in fair value, net of tax |  |  | (806) | (3,055)
Foreign currency translation adjustment, net | 84,500 | (16,642) | 155,153 | (3,991)
Other comprehensive income (loss), total, net of tax | 86,682 | (11,350) | 157,780 | (853)
Interest Rate Swap [Member] |  |  |  |
Components of Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Amounts reclassified, gross | 511 | 1,678 | 2,352 | 5,081
Changes in fair value, gross | 2,181 | 3,535 | 305 | (6,980)
Amounts reclassified, tax effect | (135) | (444) | (623) | (1,743)
Changes in fair value, tax effect | (2,542) | (937) | (81) | 3,084
Amounts reclassified, net of tax | 376 | 1,234 | 1,729 | 3,338
Changes in fair value, net of tax | (361) | 2,598 | 224 | (3,896)
Fuel [Member] | Commodity Contract [Member] |  |  |  |
Components of Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Amounts reclassified, gross | 789 | 1,342 | 2,765 | 4,616
Changes in fair value, gross | 2,717 | 1,019 | (1,672) | 1,343
Amounts reclassified, tax effect | (302) | (512) | (1,061) | (1,761)
Changes in fair value, tax effect | (1,037) | (389) | 642 | (502)
Amounts reclassified, net of tax | 487 | 830 | 1,704 | 2,855
Changes in fair value, net of tax | $ 1,680 | $ 630 | $ (1,030) | $ 841

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