Unaudited Condensed Consolidated Statements Of Operations And Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
REVENUES:
Gross premiums written	$ 860.9	$ 863.5
Premiums ceded	(184.8)	(159.5)
Net premiums written	676.1	704.0
Change in unearned premiums	(131.2)	(123.9)
Net premiums earned	544.9	580.1
Net investment income	52.3	53.3
Net realized investment gains	40.7	18.9
Other income	1.3	0.6
Total revenues	639.2	652.9
EXPENSES:
Net losses and loss expenses	359.0	372.4
Acquisition costs	77.1	88.3
General and administrative expenses	104.1	96.4
Other expense	7.1	1.1
Amortization of intangible assets	2.3	2.5
Interest expense	10.4	20.0
Foreign exchange loss (gain)	1.4	(3.0)
Total expenses	561.4	577.7
Income before income taxes	77.8	75.2
Income tax (benefit) expense	(2.5)	1.1
NET INCOME	80.3	74.1
Other comprehensive income: foreign currency translation adjustment	5.7	3.1
COMPREHENSIVE INCOME	$ 86.0	$ 77.2
PER SHARE DATA
Basic earnings per share	$ 0.92	$ 0.82
Diluted earnings per share	$ 0.90	$ 0.81
Weighted average common shares outstanding	87,291,369	90,254,512
Weighted average common shares and common share equivalents outstanding	89,133,212	91,559,225
Dividends paid per share	$ 0	$ 0.26