Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments - Long-lived Asset Held for Sale and Trademarks (Details)

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Fair Value of Financial Instruments - Long-lived Asset Held for Sale and Trademarks (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Aug. 31, 2020
May 31, 2020
Aug. 31, 2019
Aug. 31, 2020
Aug. 31, 2019
Feb. 29, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Impairment of assets held for sale $ (22.0)   $ 27.0 $ 3.0 $ 27.0  
Assets held for sale, carrying value 416.6     416.6   $ 552.1
Trademarks, carrying value 2,738.3     2,738.3   2,718.9
Operating Segments | Disposal Group, Not Discontinued Operations            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Impairment of assets held for sale (22.0)   27.0 3.0 27.0  
Assets held for sale, carrying value           552.1
Operating Segments | Wine and Spirits | Disposal Group, Not Discontinued Operations            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Assets held for sale, carrying value 416.6     416.6   481.2
Operating Segments | Beer | Disposal Group, Not Discontinued Operations            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Assets held for sale, carrying value           $ 70.9
Nonrecurring            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Impairment of assets held for sale       3.0 27.0  
Nonrecurring | Trademarks            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Impairment of assets held for sale         11.0  
Nonrecurring | Operating Segments | Wine and Spirits | Disposal Group, Not Discontinued Operations            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Assets held for sale, carrying value 798.2     798.2    
Nonrecurring | Operating Segments | Wine and Spirits | Wine and Spirits Transactions and Other Wine and Spirits Transactions | Disposal Group, Not Discontinued Operations            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Impairment of assets held for sale (22.0) $ 25.0   3.0    
Nonrecurring | Operating Segments | Wine and Spirits | Original Wine and Spirits Transaction | Disposal Group, Not Discontinued Operations            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Impairment of assets held for sale         27.0  
Assets held for sale, carrying value     1,471.4   1,471.4  
Assets held for sale, estimated fair value     1,444.4   1,444.4  
Nonrecurring | Operating Segments | Wine and Spirits | Wine and Spirits | Disposal Group, Not Discontinued Operations            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Assets held for sale, estimated fair value $ 795.2     $ 795.2    
Nonrecurring | Operating Segments | Beer | Trademarks            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Trademarks, carrying value     28.0   28.0  
Trademarks     $ 17.0   17.0  
Impairment of trademarks         $ 11.0