Segment Information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Financial Information with Respect to Business Segments

Summarized below is financial information with respect to the Company’s business segments.

YEARS ENDED DECEMBER 31	2020			2019			2018
(in millions)
Operating revenues:
Commercial Lines	$	2,870.8		$	2,843.5		$	2,739.5
Personal Lines		1,931.4			1,911.8			1,791.3
Other		20.1			26.0			14.2
Total		4,822.3			4,781.3			4,545.0
Net realized and unrealized investment gains (losses)		5.0			109.4			(50.7	)
Total revenues	$	4,827.3		$	4,890.7		$	4,494.3
Operating income (loss) before interest expense and income taxes:
Commercial Lines:
Underwriting income	$	106.3		$	121.5		$	85.0
Net investment income		175.3			180.1			182.2
Other expense		(6.2	)		(1.5	)		(1.5	)
Commercial Lines operating income		275.4			300.1			265.7
Personal Lines:
Underwriting income		132.9			59.1			66.6
Net investment income		76.7			80.1			73.7
Other income		2.9			5.7			5.9
Personal Lines operating income		212.5			144.9			146.2
Other:
Underwriting loss		(4.3	)		(1.3	)		(4.2	)
Net investment income		13.1			21.1			11.5
Other expense		(12.0	)		(11.2	)		(12.7	)
Other operating income (loss)		(3.2	)		8.6			(5.4	)
Operating income before interest expense and income taxes		484.7			453.6			406.5
Interest on debt		(37.1	)		(37.5	)		(45.1	)
Operating income before income taxes		447.6			416.1			361.4
Non-operating income (loss) items:
Net realized and unrealized investment gains (losses)		5.0			109.4			(50.7	)
Net loss from repayment of debt		(6.2	)		—			(28.2	)
Other non-operating items		(1.6	)		(3.4	)		—
Income from continuing operations before income taxes	$	444.8		$	522.1		$	282.5

Identifiable Assets by Business Segment

The following table provides identifiable assets for the Company’s business segments and discontinued operations:

DECEMBER 31	2020		2019
(in millions)	Identifiable Assets
Property and Casualty	$	13,333.5	$	12,387.7
Assets of discontinued businesses		110.2		102.8
Total	$	13,443.7	$	12,490.5

The Company reviews the assets of its Property and Casualty Insurance Companies collectively and does not allocate them among the Commercial Lines, Personal Lines and Other segments.