XML 32 R59.htm IDEA: XBRL DOCUMENT v3.19.3
Revenue Recognition - Contract Balances (Details) - USD ($)
$ in Millions
Aug. 31, 2019
Sep. 01, 2018
Revenue from Contract with Customer [Abstract]    
Current deferred revenues $ 4.7 $ 4.8
Non-current deferred revenues $ 46.4 $ 35.0