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Revenues from Contracts with Customers - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Nov. 30, 2018
Revenue from Contract with Customer [Abstract]      
Revenue related to performance obligations satisfied $ 14.7 $ 11.7  
Revenue associated with distribution services, a portion of which related to prior periods 4.9 4.6  
Receivables related to revenue from contracts with customers 184.8   $ 199.0
Deferred revenue 7.7   10.6
Deferred revenue, revenue recognized 4.3 0.2  
Capitalized contract cost 4.0   $ 4.7
Expenses related to capitalized costs to fulfill a contract $ 2.1 $ 2.4