Fair Value of Assets and Liabilities - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Long-term debt, carrying value	$ 1,065.9	$ 1,253.9
Long-term debt, fair value	$ 1,098.9	$ 1,285.5

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

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Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant