Segment Information (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Revenue and Income (Loss) Before Income Taxes for Each Segment

Revenue and income before income taxes for each segment were as follows:

	For the Three Months Ended March 31,
(in millions)	2019		2018
Revenue:
Earned premiums
U.S. Operations	$	273.8	$	262.3
International Operations	146.7		152.4
Total earned premiums	420.5		414.7
Net investment income
U.S. Operations	23.1		22.6
International Operations	9.1		8.8
Run-off Lines	1.4		2.2
Corporate and Other	0.3		2.4
Total net investment income	33.9		36.0
Fee and other income	2.3		2.0
Net realized investment gains (losses)	52.5		(15.7		)
Total revenue	$	509.2	$	437.0

	For the Three Months Ended March 31,
(in millions)	2019			2018
Income before income taxes
U.S. Operations	$	42.9		$	34.0
International Operations	16.2			22.9
Run-off Lines	0.6			(0.7		)
Total segment income before taxes	59.7			56.2
Corporate and Other	(12.1		)	(15.5		)
Net realized investment gains (losses)	52.5			(15.7		)
Total income before income taxes	$	100.1		$	25.0

Schedule of Earned Premiums by Geographic Location

The table below presents earned premiums by geographic location for the three months ended March 31, 2019 and 2018. For this disclosure, we determine geographic location by the country of domicile of our subsidiaries that underwrite the business and not by the location of insureds or reinsureds from whom the business was generated.

	For the Three Months Ended March 31,
(in millions)	2019		2018
United States	$	272.6	$	261.4
United Kingdom	97.1		114.1
Bermuda	16.6		20.5
Malta	20.8		5.7
All other jurisdictions	13.4		13.0
Total earned premiums	$	420.5	$	414.7

Identifiable Assets

The following table represents identifiable assets:

(in millions)	March 31, 2019		December 31, 2018
U.S. Operations	$	5,179.6	$	4,707.8
International Operations	4,219.0		3,984.7
Run-off Lines	364.3		444.8
Corporate and Other	191.6		420.9
Total	$	9,954.5	$	9,558.2