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Revenue Recognition - Narrative (Details)
$ in Millions
3 Months Ended
Nov. 30, 2019
USD ($)
Revenue from Contract with Customer [Abstract]  
Timing of revenue recognition Non-current deferred revenues primarily consist of long-term service-type warranties, which are typically recognized ratably as revenue between five and ten years from the date of sale, and are included within Other long-term liabilities on the Consolidated Balance Sheets
Revenue recognized from beginning balances of contract liabilities $ 1.6