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Acquisitions - Narrative (Details) - Series of Individually Immaterial Business Acquisitions [Member] - USD ($) $ in Millions | 12 Months Ended
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Aug. 31, 2016 | Aug. 31, 2015 | Aug. 31, 2014
Business Acquisition [Line Items] |  |  |
Payments to Acquire Assets, Investing Activities | $ 50.3 | $ 321.0 | $ 281.5
Cash Distribution [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Payments to Acquire Assets, Investing Activities | $ 11.9 | $ 305.2 |

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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 Aggregate cash payments for a combination of transactions that are classified as investing activities in which assets, which may include securities, other types of investments, or productive assets, are purchased from third-party sellers. This element can be used by entities to aggregate payments for all asset purchases that are classified as investing activities. + References No definition available. + Details
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- Details
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- Details
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