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Contingencies and Litigation - Additional Information (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Feb. 28, 2017 | Aug. 31, 2016
Commitments and Contingencies Disclosure [Abstract] |  |
Outstanding letters of credit | $ 16.6 | $ 17.8
Document Period End Date | Feb. 28, 2017 |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Discounted present value of future minimum lease payments | $ 14.1 |
Electrical [Member] |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Discounted present value of future minimum lease payments | $ 11.3 |

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- Definition The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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