Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Feb. 28, 2026	Feb. 28, 2026	Feb. 28, 2025
Supplemental Cash Flow Information
Interest paid		$ 44.1	$ 47.5
Income taxes paid		35.6	21.9
Income tax refunds received		0.1	0.4
Lease liabilities arising from obtaining or re-measuring ROU assets		7.8	$ 3.1
Purchase price	$ 26.0	26.0
Gain on sale of headquarters building	$ 9.8	$ 9.8

The estimated amount of proceeds expected to be received from the sale or disposal of property, plant, and equipment.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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- Definition

Amount, before refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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- Definition

Amount of income tax refund received from tax jurisdiction.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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