Debt, including Finance Lease Obligations - Long-term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Line of Credit Facility
Long-term debt, gross	$ 1,147.8	$ 1,211.6
Less: debt issuance costs	2.3	3.1
Total debt including finance lease obligations, net of debt issuance costs	1,145.5	1,208.5
Less: debt maturing within one year	156.4	47.1
Long-term debt including finance lease obligations	989.1	1,161.4
Restricted investments, current	86.6	0.0
Restricted investments, noncurrent	0.0	84.4
Wickliffe, Kentucky Manufacturing Facility
Line of Credit Facility
Present value of lease liabilities	80.0
Revolving Credit Facility and other lines of credit
Line of Credit Facility
Long-term debt, gross	425.0	517.0
Letters of credit outstanding	12.2	9.0
Available under the facility	$ 312.8	$ 474.0
Weighted average interest rate	5.20%	6.40%
Senior Notes \| 3.88% Senior Notes due 2028
Line of Credit Facility
Stated rate	3.88%
Long-term debt, gross	$ 550.0	$ 550.0
Finance lease obligations
Line of Credit Facility
Long-term debt, gross	97.8	98.8
Accounts receivable securitization
Line of Credit Facility
Long-term debt, gross	$ 75.0	$ 43.9
Weighted average interest rate	4.76%	5.51%
Other notes payable
Line of Credit Facility
Long-term debt, gross	$ 0.0	$ 1.9

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.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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- Definition

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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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

Amount of long-term debt and lease obligation, classified as noncurrent.

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Amount of long-term debt and lease obligation, including portion classified as current.

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No definition available.

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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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This element represents the current portion of investments which are not defined as or included in marketable (debt, equity, or other) securities that are pledged or subject to withdrawal restrictions.

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This element represents the noncurrent portion of investments which are not defined as or included in marketable (debt, equity, or other) securities that are pledged or subject to withdrawal restrictions.

+ References

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