Reinsurance (Tables)

12 Months Ended

Dec. 31, 2021

Insurance [Abstract]

Schedule of Reinsurance Premiums

Premiums were as follows:

	For the Years Ended December 31,
(in millions)	2021			2020			2019
Direct written premiums	$	2,990.6		$	2,676.1		$	2,510.4
Reinsurance ceded to other companies	(1,203.9)			(1,423.2)			(1,375.6)
Reinsurance assumed from other companies	190.6			557.2			619.8
Net written premiums	$	1,977.3		$	1,810.1		$	1,754.6
Direct earned premiums	$	2,917.7		$	2,660.6		$	2,412.4
Reinsurance ceded to other companies	(1,272.7)			(1,388.6)			(1,286.7)
Reinsurance assumed from other companies	265.1			508.5			604.0
Net earned premiums	$	1,910.1		$	1,780.5		$	1,729.7
Percentage of reinsurance assumed to net earned premiums	13.9		%	28.6		%	34.9		%