Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operations:
Net (loss) income	$ (121.3)	$ 104.1
Adjustments to reconcile net income to net cash provided from operations:
Net realized and unrealized investment losses (gains)	23.5	(83.0)
Amortization of premium on fixed maturity investments	0.4	(0.8)
Amortization of intangible assets	3.9	3.9
Depreciation and other amortization	1.7	2.2
Share-based compensation	1.9	1.2
Other operating items:
Net change in loss and loss adjustment expense reserves	278.6	(1.1)
Net change in reinsurance recoverable on paid and unpaid losses	(91.1)	(8.7)
Net change in funds held by ceding companies	22.5	(20.1)
Net change in unearned insurance and reinsurance premiums	309.5	232.4
Net change in ceded reinsurance payable	111.3	37.7
Net change in ceded unearned insurance and reinsurance premiums	(96.6)	(47.6)
Net change in insurance and reinsurance premiums receivable	(280.5)	(208.8)
Net change in deferred acquisition costs	(26.4)	(14.2)
Net change in funds held under reinsurance treaties	(12.7)	15.4
Net change in current and deferred income taxes, net	(11.5)	9.1
Net change in other assets and liabilities, net	2.0	2.9
Net cash provided from operations	115.2	24.6
Cash flows from investing activities:
Net change in short-term investments	33.8	(120.1)
Sales of fixed maturities and convertible fixed maturity investments	99.3	135.1
Maturities, calls, and paydowns of fixed maturity and convertible fixed maturity investments	62.0	59.3
Sales of common equity securities	205.0	45.9
Distributions, redemptions, and maturities of other long-term investments	7.4	15.3
Return of principal on loan participations	0.1	0.0
Contributions to other long-term investments	(17.6)	(25.0)
Purchases of common equity securities	(253.6)	(39.8)
Purchases of fixed maturities and convertible fixed maturity investments	(261.2)	(105.1)
Net change in unsettled investment purchases and sales	22.5	10.0
Other, net	(0.4)	0.3
Net cash (used for) investing activities	(102.7)	(24.1)
Cash flows from financing activities:
Change in collateral held on Interest Rate Cap	0.0	(0.1)
Net cash (used for) from financing activities	0.0	(0.1)
Effect of exchange rate changes on cash	(7.3)	(3.6)
Net increase (decrease) in cash during period	5.2	(3.2)
Cash and restricted cash balance at beginning of period	150.6	132.2
Cash and restricted cash balance at end of period	$ 155.8	$ 129.0