Fair Value of Financial Instruments - Nonrecurring Basis Measurements (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2026	Aug. 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
Impairment of equity method investments	0.0	1.5	0.0	1.5
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment and related expenses			68.1	52.1
Impairment of equity method investments				1.5
Total				53.6
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	0.0	0.0
Equity method investments, fair value		0.0		0.0
Total		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	5.0	0.0	5.0	0.0
Equity method investments, fair value		0.0		0.0
Total		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	$ 0.0	0.0
Equity method investments, fair value		0.0		0.0
Total		$ 0.0		$ 0.0

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Amount of impairment loss for asset. Includes, but is not limited to, tangible and intangible assets and goodwill.

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Fair value portion of asset recognized for present right to economic benefit.

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Fair value portion of investments accounted under the equity method.

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