Future Policy Benefits - Summary of Weighted Average Durations of Liability (Details)	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Future Policy Benefits [Abstract]
Original duration of the liability in years	8 years 9 months 25 days	9 years 7 months 2 days
Current duration of the liability in years	8 years 3 months 10 days	9 years 3 days

Weighted-average duration of liability for future policy benefit, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)(5)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480081/944-40-50-6

Name:	us-gaap_LiabilityForFuturePolicyBenefitWeightedAverageDuration
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant