Financing Arrangements (Fair Value of Debt) (Details) - Level 1 - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Carrying amount
Debt Instrument [Line Items]
Carrying amount	$ 350.0	$ 350.0
Fair value
Debt Instrument [Line Items]
Fair value	$ 330.2	$ 227.5

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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+ Details

- Definition

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

+ References + Details