Reinsurance (Tables)

12 Months Ended

Dec. 31, 2019

Reinsurance Disclosures [Abstract]

Reinsurance Premiums for Insurance Companies

Reinsurance data is as follows:

	Year Ended December 31
	2019		2018		2017
	(in millions of dollars)
Direct Premium Income	$	9,576.3	$	9,171.1	$	8,677.2
Reinsurance Assumed	116.5		142.6		230.0
Reinsurance Ceded	(327.2)		(327.6)		(310.1)
Net Premium Income	$	9,365.6	$	8,986.1	$	8,597.1
Ceded Benefits and Change in Reserves for Future Benefits	$	650.1	$	667.2	$	655.4