SCHEDULE IV REINSURANCE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Premiums earned
Net earned premiums	$ 664.2	$ 22.8	$ 16.3
HG Global/BAM
Premiums earned
Gross Amount	23.2	19.4	13.6
Ceded to Other Companies	0.0	0.0	0.0
Assumed from Other Companies	3.7	3.4	2.7
Net earned premiums	$ 26.9	$ 22.8	$ 16.3
Percentage of Amount Assumed to Net	13.80%	14.90%	16.60%
Ark
Premiums earned
Gross Amount	$ 886.4
Ceded to Other Companies	(249.1)
Assumed from Other Companies	0.0
Net earned premiums	$ 637.3	$ 0.0	$ 0.0
Percentage of Amount Assumed to Net	0.00%