Quarterly report pursuant to Section 13 or 15(d)

Goodwill (Details)

v3.8.0.1
Goodwill (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
May 31, 2018
Feb. 28, 2018
Changes in the carrying amount of goodwill [Roll Forward]    
Goodwill, beginning of period $ 8,083.1 $ 7,920.5
Purchase accounting allocations   120.1
Foreign currency translation adjustments (33.1) 42.5
Goodwill, end of period 8,050.5 8,083.1
Purchase accounting allocations, adjustments 0.5  
Operating Segments [Member] | Beer [Member]    
Changes in the carrying amount of goodwill [Roll Forward]    
Goodwill, beginning of period 5,157.6 5,053.0
Purchase accounting allocations   63.9
Foreign currency translation adjustments (29.3) 40.7
Goodwill, end of period 5,128.3 5,157.6
Purchase accounting allocations, adjustments 0.0  
Operating Segments [Member] | Beer [Member] | Obregon Brewery [Member]    
Changes in the carrying amount of goodwill [Roll Forward]    
Purchase accounting allocations   13.8
Operating Segments [Member] | Wine and Spirits [Member]    
Changes in the carrying amount of goodwill [Roll Forward]    
Goodwill, beginning of period 2,925.5 2,867.5
Purchase accounting allocations   56.2
Foreign currency translation adjustments (3.8) 1.8
Goodwill, end of period 2,922.2 $ 2,925.5
Purchase accounting allocations, adjustments $ 0.5