Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
Nov. 30, 2018	Nov. 30, 2017
Corporate Joint Venture
Related Party Transaction [Line Items]
Purchases from joint ventures	$ 4	$ 3

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.

No definition available.

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Balance Type:	na
Period Type:	duration