Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024	May 31, 2026	May 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment and related expenses	$ 49.8	$ 0.0	$ 68.1	$ 52.1
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment and related expenses			68.1	$ 52.1
Operating Segments \| Disposal Group, Not Discontinued Operations \| Nelson's Green Brier \| Wine and Spirits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets to be divested	54.8		54.8
Operating Segments \| Disposal Group, Not Discontinued Operations \| Nelson's Green Brier \| Wine and Spirits \| Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held for sale and related net assets	5.0		5.0
Asset impairment and related expenses	$ 49.8		49.8
Operating Segments \| Disposal Group, Not Discontinued Operations \| New Zealand Wine Divestitures \| Wine and Spirits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets to be divested						$ 36.7
Operating Segments \| Disposal Group, Not Discontinued Operations \| New Zealand Wine Divestitures \| Wine and Spirits \| Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets held for sale and related net assets						$ 18.4
Asset impairment and related expenses			$ 18.3
Operating Segments \| Disposal Group, Not Discontinued Operations \| 2025 Wine Divestitures \| Wine and Spirits \| Nonrecurring
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