Constellation Brands, Inc. Annual report pursuant to Section 13 and 15(d)

Derivative Instruments (Details) - USD ($) $ in Millions	Feb. 28, 2019	Feb. 28, 2018
Designated as hedging instrument [Member] \| Foreign currency contracts [Member]
Derivative [Line Items]
Aggregate notional value of derivative instruments	$ 1,579.3	$ 1,465.4
Not designated as hedging instrument [Member] \| Foreign currency contracts [Member]
Derivative [Line Items]
Aggregate notional value of derivative instruments	460.3	440.6
Not designated as hedging instrument [Member] \| Commodity derivative contracts [Member]
Derivative [Line Items]
Aggregate notional value of derivative instruments	$ 284.7	$ 177.5