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Revenue Recognition - Remaining Performance Obligations (Details)
$ in Millions
Nov. 30, 2018
USD ($)
Revenue Recognition  
Remaining performance obligation $ 1,300
Remaining performance obligation (as a percent) 40.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-11-30  
Remaining Performance Obligations  
Remaining performance obligation, expected timing of satisfaction 12 months