Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments - Impairment of Long-Lived Assets and Long-Lived Assets Held for Sale (Details)

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Fair Value of Financial Instruments - Impairment of Long-Lived Assets and Long-Lived Assets Held for Sale (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Aug. 31, 2021
Aug. 31, 2020
May 31, 2020
Aug. 31, 2021
Aug. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impairment of brewery construction in progress $ 0.0 $ 0.0   $ 665.9 $ 0.0
Impairment of assets held for sale 0.0 (22.0)   0.0 3.0
Nonrecurring          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Impairment of brewery construction in progress       665.9  
Impairment of assets held for sale         3.0
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]          
Impairment of assets held for sale   (22.0) $ 25.0   3.0
Assets held for sale, carrying value   798.2     798.2
Assets held for sale, estimated fair value   $ 795.2     $ 795.2
Nonrecurring | Mexicali Brewery | Construction in progress | Operating Segments | Beer          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Long-lived assets, carrying value 685.9     685.9  
Long-lived assets, estimated fair value $ 20.0     20.0  
Impairment of brewery construction in progress       $ 665.9