Investments Investment Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Assets on deposit with state regulatory authorities	$ 3.9	$ 3.7
Payable for investments purchased	$ 21.7	$ 0.0

Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 825
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477351/944-825-50-1A

Name:	us-gaap_AssetsHeldByInsuranceRegulators
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant