Supplemental Data (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Cost Data:
Repairs and maintenance costs	$ 128.6	$ 126.7	$ 101.4
Noncash investing and financing activities:
Noncash purchases of property, plant, equipment and software	15.3	10.6	13.6
Cash paid during the year for:
Interest payments, net	48.4	49.2	50.9
Income tax payments, net	$ 93.6	$ 62.8	$ 9.9

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Cost Data [Abstract]

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The aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property.

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The fair value of assets acquired in noncash investing or financing activities.

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Amount, after 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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