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Subsequent Events	3 Months Ended
Subsequent Events	Nov. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events As described in Note 15, Commitments and Contingencies, a gain contingency existed as of November 30, 2018, following the application of ASC Topic 450-30, Gain Contingencies, to the facts and circumstances surrounding the potential for certain excise tax credits associated with manufacturing changes within our Energy business. The gain contingency was resolved subsequent to November 30, 2018, and a gain of approximately $80.8 million will be recognized primarily as a reduction of cost of goods sold in the Consolidated Statement of Operations during the second quarter of fiscal 2019.