Insurance Company Subsidiary Operations - Effects of Reinsurance on Premiums Written and Earned (Details) $ in Millions	3 Months Ended
Mar. 31, 2022 USD ($)
Written
Net premiums	$ 11.5
Earned
Net premiums	1.1
WNFIC
Written
Direct premiums	157.6
Ceded premiums	(157.6)
Earned
Direct premiums	187.5
Ceded premiums	(187.5)
Captive
Written
Assumed Premiums	19.5
Ceded premiums	(8.0)
Net premiums	11.5
Earned
Assumed Premium	1.9
Ceded premiums	(0.8)
Net premiums	$ 1.1

Amount of earned premiums assumed from other entities.

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