CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operations:
Net income	$ 593.1	$ 409.0	$ 276.7
Charges (credits) to reconcile net income to net cash provided from (used for) operations:
Net realized and unrealized investment (gains) losses	(133.3)	27.4	(260.5)
Net gain on sale of unconsolidated affiliates	0.0	0.0	(19.8)
Amortization of restricted share and option awards	14.8	18.5	14.9
Amortization and depreciation	22.4	20.4	3.8
Deferred income tax (benefit) expense	(11.4)	(12.5)	11.3
Undistributed equity in earnings from unconsolidated affiliates, after-tax	0.0	0.0	(25.1)
Net income from discontinued operations	(20.5)	(108.3)	(116.9)
Net gain on sale of discontinued operations	(557.0)	(415.1)	(18.2)
Other operating items:
Net change in unearned insurance premiums	(54.5)	(31.7)	(23.9)
Net change in deferred acquisition costs	(4.2)	(3.7)	(3.0)
Net change in restricted cash	0.0	5.8	17.9
Net change in other assets and liabilities, net	(20.8)	(146.1)	29.0
Net cash used for continuing operations	(62.4)	(172.9)	(66.0)
Net cash provided from discontinued operations (Note 19)	157.0	23.6	248.4
Net cash provided from (used for) operations	94.6	(149.3)	182.4
Cash flows from investing activities:
Net change in short-term investments	(1.7)	(27.2)	6.9
Sales of fixed maturity and convertible investments	2,124.4	2,605.8	518.2
Maturities, calls and paydowns of fixed maturity and convertible investments	213.4	253.4	72.6
Sales of common equity securities	424.1	815.9	115.8
Distributions and redemptions of other long-term investments	29.4	17.3	44.1
Sales of unconsolidated affiliates and consolidated subsidiaries, net of cash sold	1,131.0	2,646.2	24.0
Proceeds paid to non-controlling common shareholders from the sale of consolidated subsidiaries	0.0	(141.6)	0.0
Purchases of other long-term investments	(84.1)	(38.5)	(73.9)
Proceeds paid to non-controlling common shareholders from the sale of consolidated subsidiaries	167.7	(402.0)	18.0
Purchases of common equity securities	(881.2)	(278.3)	(86.4)
Purchases of fixed maturity and convertible investments	(2,365.2)	(4,407.0)	(533.7)
Purchases of consolidated affiliates and other assets (net of cash acquired)	(27.6)	(13.4)	(2.6)
Other investing activities, net	(14.7)	4.8	8.8
Net cash provided from investing activities — continuing operations	715.5	1,035.4	111.8
Net cash provided from (used for) investing activities — discontinued operations (Note 19)	3.0	241.4	(100.5)
Net cash provided from investing activities	718.5	1,276.8	11.3
Cash flows from financing activities:
Draw down of debt and revolving line of credit	376.0	352.5	171.5
Repayment of debt and revolving line of credit	(365.0)	(404.6)	(76.1)
Cash dividends paid to the Company’s common shareholders	(4.6)	(5.4)	(6.0)
Acquisitions of additional shares from non-controlling interest	(0.7)	0.0	(9.1)
Distributions from discontinued operations	45.2	57.2	52.7
Common shares repurchased	(714.6)	(881.3)	(268.6)
Proceeds from issuances of common shares	0.0	3.7	0.0
Capital contributions from non-controlling interest shareholders	0.5	0.0	0.0
Distributions to non-controlling interest shareholders	(2.0)	(1.1)	(7.5)
Payments to contingent considerations related to purchases of consolidated subsidiaries	0.0	(7.8)	0.0
Capital contributions from BAM members	37.4	38.0	29.2
Other financing activities, net	(9.3)	(5.8)	(6.7)
Net cash used for financing activities — continuing operations	(637.1)	(854.6)	(120.6)
Net cash used for financing activities — discontinued operations (Note 19)	(61.9)	(93.8)	(100.7)
Net cash used for financing activities	(699.0)	(948.4)	(221.3)
Net change in cash during the period - continuing operations	16.0	7.9	(74.8)
Cash balance at beginning of year	80.2	72.0	145.7
Add: cash held for sale at the beginning of period	0.0	0.9	1.2
Less: cash held for sale at the end of period	0.9	1.2	2.3
Cash balance at end of year	$ 97.1	$ 80.2	$ 72.0