Summary of Significant Accounting Policies - Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
2029 Senior Notes
Debt Instrument [Line Items]
Long-term debt, fair value	$ 726.3	$ 724.2
2031 Senior Notes
Debt Instrument [Line Items]
Long-term debt, fair value	$ 679.9	$ 677.6

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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+ Details