Debt Disclosure [Line Items]

No definition available.

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- Definition

Amount of debt and lease obligation, classified as current.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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Balance Type:	debit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation.

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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Debt - Debt Outstanding and Average Interest Rates (Detail) - USD ($) $ in Millions	Dec. 31, 2025	Jun. 30, 2025	Dec. 31, 2024	Apr. 30, 2023
Debt Disclosure [Line Items]
Long-term debt, gross	$ 1,568.2
Unamortized issuance costs and discounts	(8.4)		$ (11.3)
Total debt	1,559.8		2,155.0
Less: Current maturities and short-term borrowings	(13.8)		(37.5)
Long-term debt	1,546.0		2,117.5
Debt, Current	(13.8)		(37.5)
Revolving Credit Facility
Debt Disclosure [Line Items]
Long-term debt, gross	0.0		0.0
Senior Notes \| 2021 Term loan facility \| Line of Credit
Debt Disclosure [Line Items]
Long-term debt, gross	0.0		88.8
Senior Notes \| 2023 Term loan facility \| Line of Credit
Debt Disclosure [Line Items]
Long-term debt, gross	$ 0.0		277.5	$ 300.0
Senior Notes \| Senior Notes 4.550% Due 2028
Debt Disclosure [Line Items]
Average interest rate	4.55%
Long-term debt, gross	$ 500.0		500.0
Senior Notes \| Senior Notes 2.750% Due 2031
Debt Disclosure [Line Items]
Average interest rate	2.75%
Long-term debt, gross	$ 300.0		300.0
Senior Notes \| Senior Notes 5.650% Due 2033
Debt Disclosure [Line Items]
Average interest rate	5.65%
Long-term debt, gross	$ 500.0		500.0
Senior Notes \| 2024 Term Loan Facility \| Line of Credit
Debt Disclosure [Line Items]
Long-term debt, gross	$ 0.0	$ 500.0	500.0
Senior Notes \| 2025 Term Loan Facility \| Line of Credit
Debt Disclosure [Line Items]
Average interest rate	4.977%
Long-term debt, gross	$ 268.2		$ 0.0