Fair Value of Financial Instruments - Nonrecurring basis Measurements (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 31, 2025 USD ($)	Aug. 31, 2024 USD ($)	Aug. 31, 2025 USD ($)	Aug. 31, 2024 USD ($)	Feb. 28, 2025 USD ($)	May 31, 2025 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment and related expenses	$ 0.0	$ 0.0	$ 52.1	$ 0.0
Impairment of equity method investments	1.5	2.1	1.5	2.1
Goodwill impairment	0.0	$ 2,250.0	0.0	$ 2,250.0	$ 2,740.7
Discount rate | Discounted cash flow method
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discounted cash flow calculation assumptions		0.09		0.09
Expected long-term growth rate | Discounted cash flow method
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discounted cash flow calculation assumptions		0.015		0.015
Operating Segments | Wine and Spirits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill impairment		$ 2,250.0		$ 2,250.0	$ 2,740.7
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment and related expenses			52.1
Impairment of equity method investments			1.5	2.1
Goodwill impairment				2,250.0
Asset Impairment Charges			53.6	2,252.1
Nonrecurring | Operating Segments | Disposal Group, Not Discontinued Operations | 2025 Wine Divestitures | Wine and Spirits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held for sale and related net assets						$ 897.7
Asset impairment and related expenses			52.1
Quoted Prices in Active Markets (Level 1) | Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held for sale and related net assets	0.0		0.0
Equity method investments, fair value	0.0	0.0	0.0	0.0
Goodwill		0.0		0.0
Assets, Fair Value Disclosure	0.0	0.0	0.0	0.0
Significant Other Observable Inputs (Level 2) | Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held for sale and related net assets	0.0		0.0
Equity method investments, fair value	0.0	0.0	0.0	0.0
Goodwill		0.0		0.0
Assets, Fair Value Disclosure	0.0	0.0	0.0	0.0
Significant Unobservable Inputs (Level 3) | Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held for sale and related net assets	0.0		0.0
Equity method investments, fair value	0.0	0.0	0.0	0.0
Goodwill		564.8		564.8
Assets, Fair Value Disclosure	$ 0.0	$ 564.8	$ 0.0	$ 564.8