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Temporary Differences and Carryforwards of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Aug. 31, 2016 | Aug. 31, 2015 | Aug. 31, 2014 | Aug. 31, 2012
Income Tax Disclosure [Abstract] |  |  |  |
Unrecognized Tax Benefits | $ 29,174 | $ 29,924 | $ 39,509 | $ 18,006
Deferred income tax assets: |  |  |  |
Deferred Tax Assets Operating Loss And Tax Credit Carryforwards | 36,761 | 19,419 |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits | 25,086 | 27,047 |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits | 8,727 | 6,778 |  |
Deferred Tax Assets, Inventory | 3,044 | 3,253 |  |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other | 8,317 | 11,976 |  |
Total deferred income tax assets | 81,935 | 68,473 |  |
Valuation allowance | (8,147) | (8,053) |  |
Net deferred income tax assets | 73,788 | 60,420 |  |
Deferred income tax liabilities: |  |  |  |
Depreciation and amortization | (83,020) | (110,763) |  |
Other items | (5,493) | (4,539) |  |
Deferred income tax liabilities | (88,513) | (115,302) |  |
Net deferred income tax liability | (14,725) | (54,882) |  |
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions | 1,050 | 2,183 | 28,053 |
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions | 475 | 8,935 | 0 |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | 0 | 633 | 0 |
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations | 1,027 | 4,464 | 7,030 |
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | 0 | 14,180 | 0 |
Unrecognized Tax Benefits, Increase (Decrease) Resulting from Foreign Currency Translation | $ (1,248) | $ (1,426) | $ 480 |

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- Definition Amount of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Liability -URI http://asc.fasb.org/extlink&oid=6510232 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph b(2) -Article 7 + Details
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