Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Cash Flows From Operating Activities
Net income	$ 122.4	$ 67.7
Adjustments to reconcile net income to net cash provided by operating activities:
Net realized and unrealized investment gains	(48.4)	23.4
Gain on sale of Chaucer-related Irish entity	(0.9)
Net amortization and depreciation	6.9	6.9
Stock-based compensation expense	4.2	3.0
Amortization of defined benefit plan costs	2.8	2.5
Deferred income tax (benefit) expense	13.8	(7.4)
Change in deferred acquisition costs	2.7	(3.9)
Change in premiums receivable, net of reinsurance premiums payable	(4.3)	6.2
Change in loss, loss adjustment expense and unearned premium reserves	99.2	127.4
Change in reinsurance recoverable	(28.2)	(86.4)
Change in expenses and taxes payable	(88.0)	(69.1)
Other, net	(45.0)	(38.9)
Net cash provided by operating activities	37.2	31.4
Cash Flows From Investing Activities
Proceeds from disposals and maturities of fixed maturities	193.1	295.3
Proceeds from disposals of equity securities and other investments	28.1	21.8
Purchase of fixed maturities	(483.4)	(418.2)
Purchase of equity securities and other investments	(37.6)	(39.8)
Capital expenditures	(3.9)	(3.5)
Net cash proceeds from sale of Chaucer-related Irish entity, offset by cash transferred	24.4
Net cash used in investing activities	(279.3)	(144.4)
Cash Flows From Financing Activities
Proceeds from exercise of employee stock options	5.0	6.3
Proceeds from debt borrowings, net		33.0
Change in cash collateral related to securities lending program	6.7	(8.2)
Dividends paid to shareholders	(217.0)	(22.9)
Repurchases of common stock	(250.0)	(13.6)
Repayment of debt	(151.1)
Other financing activities	(4.2)	(2.2)
Net cash used in financing activities	(610.6)	(7.6)
Effect of exchange rate changes on cash		2.2
Net change in cash and cash equivalents	(852.7)	(118.4)
Net change in cash related to discontinued operations	0.5	(44.1)
Cash and cash equivalents, beginning of period	1,020.7	297.9
Cash and cash equivalents, end of period	$ 168.5	$ 135.4

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