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

Fair Value of Financial Instruments (Details)

Fair Value of Financial Instruments (Details) - Significant Other Observable Inputs (Level 2) [Member]	Feb. 28, 2019 $ / shares	Nov. 01, 2018 $ / shares	Feb. 28, 2018 $ / shares
Warrant [Member] \| November 2018 Canopy Warrants [Member] \| Issue date exercise price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants outstanding, measurement input, per share	$ 50.40	$ 50.40
Warrant [Member] \| November 2018 Canopy Warrants [Member] \| Valuation date stock price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants outstanding, measurement input, per share	$ 62.38	$ 48.43
Warrant [Member] \| November 2018 Canopy Warrants [Member] \| Expected life (in years) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants outstanding, term	2 years 8 months	3 years
Warrant [Member] \| November 2018 Canopy Warrants [Member] \| Expected volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input, decimal	0.793	0.759
Warrant [Member] \| November 2018 Canopy Warrants [Member] \| Risk-free interest rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input, decimal	0.018	0.024
Warrant [Member] \| November 2018 Canopy Warrants [Member] \| Expected dividend yield [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input, decimal	0.000	0.000
Warrant [Member] \| November 2017 Canopy Warrants [Member] \| Issue date exercise price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants outstanding, measurement input, per share	$ 12.98		$ 12.98
Warrant [Member] \| November 2017 Canopy Warrants [Member] \| Valuation date stock price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants outstanding, measurement input, per share	$ 62.38		$ 27.35
Warrant [Member] \| November 2017 Canopy Warrants [Member] \| Expected life (in years) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants outstanding, term	1 year 2 months		2 years 2 months
Warrant [Member] \| November 2017 Canopy Warrants [Member] \| Expected volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input, decimal	0.878		0.709
Warrant [Member] \| November 2017 Canopy Warrants [Member] \| Risk-free interest rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input, decimal	0.018		0.018
Warrant [Member] \| November 2017 Canopy Warrants [Member] \| Expected dividend yield [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input, decimal	0.000		0.000
Convertible debt securities [Member] \| Valuation date stock price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt instrument, measurement input, monetary	$ 62.38
Convertible debt securities [Member] \| Expected life (in years) [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities, term	4 years 5 months
Convertible debt securities [Member] \| Expected volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt instrument, measurement input	0.459
Convertible debt securities [Member] \| Risk-free interest rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt instrument, measurement input	0.018
Convertible debt securities [Member] \| Expected dividend yield [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt instrument, measurement input	0.000
Convertible debt securities [Member] \| Conversion price [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt instrument, measurement input, monetary	$ 48.17