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

Debt - Long Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025	Mar. 10, 2022	Feb. 15, 2022
Debt Instrument [Line Items]
Non-Current:	$ 944.5	$ 943.5
Senior Notes \| Senior Notes, 4.35 Percent Due February 15, 2025
Debt Instrument [Line Items]
Stated interest rate	4.35%
Senior Notes \| Senior Notes, 2.400 Percent Due September 30, 2030
Debt Instrument [Line Items]
Non-Current:	$ 398.1	397.9
Stated interest rate	2.40%
Senior Notes \| Senior Notes, 3.800 Percent Due February 23, 2033
Debt Instrument [Line Items]
Non-Current:	$ 397.2	396.9		$ 395.1
Stated interest rate	3.80%
Junior Debt \| 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
Debt Instrument [Line Items]
Non-Current:	$ 149.2	$ 148.7	$ 144.7
Stated interest rate	5.875%