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Basis of Presentation - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Nov. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Cash and cash equivalents held in escrow $ 752.5   $ 314.3
Cash and cash equivalents held in escrow, deposit period 3 days    
Nonvested shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Nonvested shares granted (in shares) 1.4 0.9