Accumulated Other Comprehensive Loss - Amounts Reclassified out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest and foreign exchange	$ 9,237	$ 7,029	$ 13,641	$ 14,049
Total before tax	(8,817)	(53,841)	(40,867)	(108,263)
Income tax benefit	2,248	(11,301)	11,383	6,834
Unrealized (Gain) Loss on Derivative Financial Instruments \| Reclassification out of Accumulated Other Comprehensive loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total before tax	920	(440)	1,552	(784)
Income tax benefit	(219)	103	(382)	119
Net of tax	701	(337)	1,170	(665)
Unrealized (Gain) Loss on Derivative Financial Instruments \| Reclassification out of Accumulated Other Comprehensive loss \| Foreign Exchange Contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Revenue and Cost of revenue	769	(546)	1,257	(1,057)
Unrealized (Gain) Loss on Derivative Financial Instruments \| Reclassification out of Accumulated Other Comprehensive loss \| Interest rate swap contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest and foreign exchange	$ 151	$ 106	$ 295	$ 273

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Revenue and Cost of Revenue

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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