Stock-based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Feb. 29, 2020	Feb. 28, 2019
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 82.6	$ 59.7
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	24.0	17.3
Selling general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 58.6	$ 42.4