Annual report pursuant to Section 13 and 15(d)

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

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Fair Value of Financial Instruments - Long-lived Assets Held for Sale and Trademarks (Details) - USD ($)
$ in Millions
 12 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets held for sale, carrying value $ 0.0 $ 552.1  
Impairment of assets held for sale 24.0 449.7 $ 0.0
Trademarks, carrying value 2,732.1 2,718.9  
Operating Segments | Disposal Group, Not Discontinued Operations      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets held for sale, carrying value   552.1  
Impairment of assets held for sale 24.0 449.7  
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   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 24.0 449.7  
Nonrecurring | Trademarks      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Impairment of trademarks 6.0 11.0 108.0
Nonrecurring | Operating Segments | Wine and Spirits | Wine and Spirits Divestitures and Concentrate Business Divestiture | Disposal Group, Not Discontinued Operations      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets held for sale, carrying value 736.4 1,291.2  
Assets held for sale, estimated fair value 712.4 908.2  
Impairment of assets held for sale 24.0 407.0  
Nonrecurring | Operating Segments | Beer | Trademarks      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Trademarks, carrying value 10.0 28.0 136.0
Trademarks, estimated fair value 4.0 17.0 28.0
Impairment of trademarks $ 6.0 11.0 $ 108.0
Nonrecurring | Operating Segments | Beer | Ballast Point Divestiture | Disposal Group, Not Discontinued Operations      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets held for sale, carrying value   81.3  
Assets held for sale, estimated fair value   41.1  
Impairment of assets held for sale   $ 42.7