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

Annual report pursuant to Section 13 and 15(d)

Equity Method Investments - Narrative (Details)

Equity Method Investments - Narrative (Details) $ / shares in Units, $ in Millions, $ in Millions									1 Months Ended		12 Months Ended
	Feb. 28, 2021 USD ($)	May 01, 2020 USD ($)	May 01, 2020 CAD ($) $ / shares	Jun. 30, 2019 USD ($) shares	Jun. 30, 2019 CAD ($) shares	Jun. 27, 2019 USD ($)	Nov. 01, 2018 USD ($) shares	Nov. 01, 2018 CAD ($) shares	Feb. 28, 2021 USD ($) shares	Jun. 30, 2019 USD ($) shares	Feb. 28, 2021 USD ($)	Feb. 29, 2020 USD ($)	Feb. 28, 2019 USD ($)	Feb. 28, 2021 CAD ($)	Sep. 01, 2020	Aug. 31, 2020	Nov. 30, 2017 shares
Schedule of Equity Method Investments [Line Items]
Payments to acquire investments											$ 222.4	$ 48.2	$ 4,081.5
Net Gain (Loss) Recognized in Income (Loss)											7.7	(56.8)	(24.0)
Common shares to be repurchased for cancellation under share repurchase credit feature (in shares) \| shares				27,378,866	27,378,866
Unrealized net gain (loss) on securities measured at fair value											$ 802.0	$ (2,126.4)	1,971.2
Canopy equity method investment
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	38.10%		38.60%				36.60%	36.60%	38.10%		38.10%	35.30%		38.10%
Equity in earnings (losses) from Canopy and related activities											$ (679.0)	$ (575.9)	$ (2.6)
Cash consideration transferred from Canopy divestiture														$ 115.0
Shares issued from Canopy ownership divestiture (in shares) \| shares									3,647,902
Fair value of equity method investment	$ 4,679.3								$ 4,679.3		4,679.3
May 2020 Canopy Investment \| Foreign currency contracts
Schedule of Equity Method Investments [Line Items]
Net Gain (Loss) Recognized in Income (Loss)											(7.5)
Acreage
Schedule of Equity Method Investments [Line Items]
Ownership percentage subject to floating exchange ratio															30.00%
Acreage \| Maximum
Schedule of Equity Method Investments [Line Items]
Ownership percentage subject to fixed exchange ratio																100.00%
Acreage \| Minimum
Schedule of Equity Method Investments [Line Items]
Ownership percentage subject to fixed exchange ratio															70.00%
New November 2018 Canopy Warrants
Schedule of Equity Method Investments [Line Items]
Equity in earnings (losses) from Canopy and related activities										$ (409.0)
Unrealized net gain (loss) on securities measured at fair value				$ 1,176.0
Tranche B Warrants and Tranche C Warrants
Schedule of Equity Method Investments [Line Items]
Warrant reduction due to open market or private agreement purchases (in shares) \| shares				20,000,000	20,000,000
Tranche B Warrants and Tranche C Warrants \| Maximum
Schedule of Equity Method Investments [Line Items]
Dollar value of common shares to be repurchased for cancellation under share repurchase credit feature					$ 1,583.0
November 2017 Canopy Investment
Schedule of Equity Method Investments [Line Items]
Cost method investment, ownership percentage																	9.90%
Equity securities
Schedule of Equity Method Investments [Line Items]
Payments to acquire investments		$ 173.9	$ 245.0				$ 3,869.9	$ 5,078.7
Common Stock \| November 2018 Canopy Investment
Schedule of Equity Method Investments [Line Items]
Common Stock, shares issued (in shares) \| shares							104,500,000	104,500,000
Common Stock \| November 2017 Canopy Investment
Schedule of Equity Method Investments [Line Items]
Common Stock, shares issued (in shares) \| shares																	18,900,000
Warrants \| November 2017 Canopy Warrants
Schedule of Equity Method Investments [Line Items]
Number of common shares to be acquired upon exercise of warrants \| shares																	18,900,000
Exercise price of warrants, C$ per share \| $ / shares			$ 12.98
Unrealized net gain (loss) on securities measured at fair value											(61.8)	(543.7)
Warrants \| November 2018 Canopy Warrants
Schedule of Equity Method Investments [Line Items]
Number of common shares to be acquired upon exercise of warrants \| shares							139,700,000	139,700,000
Warrants \| New November 2018 Canopy Warrants
Schedule of Equity Method Investments [Line Items]
Unrealized net gain (loss) on securities measured at fair value											$ 823.3	$ (1,488.1)
Warrants \| Tranche A Warrants
Schedule of Equity Method Investments [Line Items]
Number of common shares to be acquired upon exercise of warrants \| shares				88,500,000	88,500,000					88,500,000
Unrealized net gain (loss) on securities measured at fair value						$ 322.5
Warrants \| Tranche B Warrants
Schedule of Equity Method Investments [Line Items]
Number of common shares to be acquired upon exercise of warrants \| shares				38,400,000	38,400,000					38,400,000
Unrealized net gain (loss) on securities measured at fair value						853.5
Warrants \| Tranche C Warrants
Schedule of Equity Method Investments [Line Items]
Number of common shares to be acquired upon exercise of warrants \| shares				12,800,000	12,800,000					12,800,000
Warrants \| New November 2018 Canopy Warrants Modification
Schedule of Equity Method Investments [Line Items]
Unrealized net gain (loss) on securities measured at fair value						$ 1,176.0
Warrants \| Canopy Warrants [Member]
Schedule of Equity Method Investments [Line Items]
Payments to acquire investments	$ 6,300.0