Quarterly report pursuant to Section 13 or 15(d)

Goodwill (Details Textual)

v2.4.0.6
Goodwill (Details Textual) (USD $)
In Millions, unless otherwise specified
6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended
Aug. 31, 2012
Feb. 29, 2012
Aug. 31, 2012
Constellation Wines and Spirits [Member]
Feb. 29, 2012
Constellation Wines and Spirits [Member]
Feb. 29, 2012
Constellation Wines and Spirits [Member]
Ruffino [Member]
Aug. 31, 2012
Constellation Wines and Spirits [Member]
Mark West Assets [Member]
Jul. 01, 2012
Constellation Wines and Spirits [Member]
Mark West Assets [Member]
Goodwill [Line Items]              
Purchase accounting allocations $ 110.0 $ 9.3 $ 110.0 $ 9.3 $ 9.3 $ 110.0  
Business acquisition, cost of acquired entity, purchase price             $ 159.7