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

Derivative Instruments (Details) - USD ($) $ in Millions	Feb. 28, 2018	Feb. 28, 2017
Designated as hedging instrument [Member] \| Foreign currency contracts [Member]
Derivative [Line Items]
Aggregate notional value of derivative instruments	$ 1,465.4	$ 981.7
Designated as hedging instrument [Member] \| Interest rate swap contracts [Member]
Derivative [Line Items]
Aggregate notional value of derivative instruments	0.0	250.0
Not designated as hedging instrument [Member] \| Foreign currency contracts [Member]
Derivative [Line Items]
Aggregate notional value of derivative instruments	440.6	389.9
Not designated as hedging instrument [Member] \| Commodity derivative contracts [Member]
Derivative [Line Items]
Aggregate notional value of derivative instruments	$ 177.5	$ 153.2