Segment Information (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Financial Information with Respect to Business Segments

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

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(in millions)	2018			2017			2018			2017
Operating revenues:
Commercial Lines	$	687.4		$	648.2		$	2,045.7		$	1,913.2
Personal Lines		452.4			421.0			1,331.8			1,234.3
Other		3.8			3.4			10.2			7.4
Total		1,143.6			1,072.6			3,387.7			3,154.9
Net realized and unrealized investment gains		23.0			13.3			3.8			20.5
Total revenues	$	1,166.6		$	1,085.9		$	3,391.5		$	3,175.4
Operating income (loss) before interest expense and income taxes:
Commercial Lines:
Underwriting income (loss)	$	20.8		$	(13.9	)	$	74.6		$	(14.7	)
Net investment income		45.0			42.1			135.1			123.7
Other expense		(0.7	)		(0.2	)		(1.4	)		(0.8	)
Commercial Lines operating income		65.1			28.0			208.3			108.2
Personal Lines:
Underwriting income		28.8			40.7			51.3			61.5
Net investment income		18.2			17.8			54.7			52.3
Other income		1.2			1.1			3.7			3.3
Personal Lines operating income		48.2			59.6			109.7			117.1
Other:
Underwriting loss		(1.0	)		(0.8	)		(3.1	)		(2.2	)
Net investment income		3.2			2.7			8.2			5.3
Other expense		(2.7	)		(3.3	)		(9.7	)		(10.1	)
Other operating loss		(0.5	)		(1.4	)		(4.6	)		(7.0	)
Operating income before interest expense and income taxes		112.8			86.2			313.4			218.3
Interest on debt		(11.2	)		(11.3	)		(33.9	)		(33.9	)
Operating income before income taxes		101.6			74.9			279.5			184.4
Non-operating income items:
Net realized and unrealized investment gains		23.0			13.3			3.8			20.5
Other non-operating items		(1.9	)		(5.5	)		(1.9	)		(7.3	)
Income before income taxes	$	122.7		$	82.7		$	281.4		$	197.6

Identifiable Assets by Business Segment

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

	September 30, 2018		December 31, 2017
(in millions)	Identifiable Assets
U.S. Companies	$	11,274.5	$	10,915.0
Assets held-for-sale		4,247.2		4,466.6
Assets of discontinued life business		102.6		88.0
Total	$	15,624.3	$	15,469.6