Goodwill and Other Intangible Assets Summary of Asset Impairment Charges (Details) $ in Millions	3 Months Ended
Nov. 30, 2018 USD ($)
Cortland U.S. Business
Impaired Assets [Line Items]
Goodwill, Impairment Loss	$ 10.2

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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