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Basis of Presentation - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2021
Aug. 31, 2020
Nov. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Cash and cash equivalents held in escrow, deposit period 3 days        
Cash and cash equivalents held in escrow $ 666.8   $ 666.8   $ 314.3
Nonvested shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Nonvested shares granted (in shares)   0.9 1.4 1.8