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Other Assets - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Aug. 31, 2016 | Aug. 31, 2015 | Aug. 31, 2014
Goodwill [Line Items] |  |  |
Goodwill, Acquired During Period | $ 9,774 | $ 423 |
Amortization of intangible assets | 6,100 | 7,300 | $ 9,700
Goodwill, Written off Related to Sale of Business Unit | 695 |  |
Ag [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill, Acquired During Period | 5,726 |  |
Finite-lived intangible assets acquired | 2,800 | 800 |
Goodwill, Written off Related to Sale of Business Unit | 695 |  |
Series of Individually Immaterial Business Acquisitions [Member] |  |  |
Goodwill [Line Items] |  |  |
Payments to Acquire Assets, Investing Activities | $ 50,300 | 321,000 | $ 281,500
Minimum | Other Intangible Assets [Member] |  |  |
Goodwill [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 2 years |  |
Minimum | Major Maintenance Activities Requiring Shutdown |  |  |
Goodwill [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 2 years |  |
Maximum | Other Intangible Assets [Member] |  |  |
Goodwill [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 30 years |  |
Maximum | Major Maintenance Activities Requiring Shutdown |  |  |
Goodwill [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 4 years |  |
Cash Distribution [Member] | Series of Individually Immaterial Business Acquisitions [Member] |  |  |
Goodwill [Line Items] |  |  |
Payments to Acquire Assets, Investing Activities | $ 11,900 | $ 305,200 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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