Quarterly report pursuant to Section 13 or 15(d)

Goodwill (Details)

v2.4.0.8
Goodwill (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
May 31, 2013
Feb. 28, 2013
Feb. 29, 2012
Changes in the carrying amount of goodwill:      
Goodwill $ 2,714.5 $ 2,722.3 $ 2,632.9
Accumulated impairment losses 0 0 0
Net goodwill 2,714.5 2,722.3 2,632.9
Purchase accounting allocations   110.0  
Foreign currency translation adjustments (7.8) (20.6)  
Constellation Wine and Spirits [Member]
     
Changes in the carrying amount of goodwill:      
Goodwill 2,714.5 2,722.3 2,632.9
Accumulated impairment losses 0 0 0
Net goodwill 2,714.5 2,722.3 2,632.9
Purchase accounting allocations   110.0  
Foreign currency translation adjustments (7.8) (20.6)  
Crown Imports [Member]
     
Changes in the carrying amount of goodwill:      
Goodwill 13.0 13.0 13.0
Accumulated impairment losses 0 0 0
Net goodwill 13.0 13.0 13.0
Purchase accounting allocations   0  
Foreign currency translation adjustments 0 0  
Consolidations and Eliminations [Member]
     
Changes in the carrying amount of goodwill:      
Goodwill (13.0) (13.0) (13.0)
Accumulated impairment losses 0 0 0
Net goodwill (13.0) (13.0) (13.0)
Purchase accounting allocations   0  
Foreign currency translation adjustments $ 0 $ 0