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Accounting Policies (Details) - USD ($) $ in Millions	Feb. 29, 2016	Aug. 31, 2015	Sep. 01, 2014
Accounting Policies [Abstract]
Percentage of LIFO Inventory	56.00%	51.00%
Increase to retained earnings resulting from cumulative effect of change in accounting method			$ 124.2
Percentage of FIFO Inventory	44.00%	38.00%

Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

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