Financing (Components Of Debt) (Detail) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Total long-term debt	$ 1,192.6	$ 1,148.2
Debt issuance costs	1.8	1.8
Short-term borrowings	5.6	0.0
The Credit Agreement \| Line of Credit \| Revolving Facility
Debt Instrument [Line Items]
Revolving Facility	300.0	250.0
The Credit Agreement \| Unsecured Debt
Debt Instrument [Line Items]
Total long-term debt	892.6	$ 898.2
Long-Term Debt, Current Maturities [Abstract]	$ 5.6

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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