CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operations:
Net (loss) income	$ (11.1)	$ 50.0
Charges (credits) to reconcile net loss to net cash used for operations:
Net realized and unrealized investment gains	(78.3)	(104.7)
Net loss (income) from discontinued operations	10.7	(1.2)
Net loss on sale of discontinued operation - AutoOne	18.2
Other operating items:
Net change in loss and loss adjustment expense reserves	244.5	(237.4)
Net change in reinsurance recoverable on paid and unpaid losses	(209.2)	255.7
Net change in unearned insurance and reinsurance premiums	86.4	39.5
Net change in funds held by ceding companies	(17.2)	14.5
Net change in deferred acquisition costs	(31.2)	36.1
Net change in ceded unearned premiums	76.5	(157.1)
Net change in funds held under reinsurance treaties	(46.0)	(15.1)
Net change in insurance and reinsurance premiums receivable	(85.4)	(100.7)
Net change in ceded reinsurance payable	(76.1)	198.7
Net change in other assets and liabilities, net	141.2	(26.5)
Net cash provided from (used for) operations - continuing operations	23.0	(48.2)
Net cash provided from operations - discontinued operations	17.5	27.2
Net cash provided from (used for) operations	40.5	(21.0)
Cash flows from investing activities:
Net change in short-term investments	112.6	139.3
Sales of fixed maturity and convertible fixed maturity investments	2,905.7	1,625.4
Maturities, calls and paydowns of fixed maturity and convertible fixed maturity investments	1,015.3	1,426.0
Sales of common equity securities	125.4	110.2
Distributions and redemptions of other long-term investments	90.0	26.5
Purchases of other long-term investments	(30.6)	(71.0)
Contribution to discontinued operations	(97.1)	(16.8)
Purchases of common equity securities	(189.0)	(211.0)
Purchases of fixed maturity and convertible fixed maturity investments	(3,497.6)	(2,663.8)
Purchases of consolidated and unconsolidated affiliates, net of cash acquired		(4.9)
Sales of consolidated and unconsolidated affiliates		166.6
Net change in unsettled investment purchases and sales	54.0	(18.7)
Net acquisitions of property and equipment	(3.3)	(3.2)
Net cash provided from investing activities - continuing operations	485.4	504.6
Net cash provided from (used for) investing activities - discontinued operations	173.7	(21.7)
Net cash provided from investing activities	659.1	482.9
Cash flows from financing activities:
Repayment of debt	(161.6)	(14.0)
Repurchase of debt		(197.3)
Cash dividends paid to the Company's common shareholders	(8.0)	(8.8)
Cash dividends paid to OneBeacon Ltd.'s noncontrolling common shareholders	(37.9)	(71.2)
Cash dividends paid on Sirius Group Preference Shares	(9.4)	(9.4)
Common shares repurchased	(229.7)	(178.2)
OneBeacon Ltd. common shares repurchased and retired		(10.5)
Proceeds from issuances of common shares	0.9	0.8
Net cash used for financing activities - continuing operations	(445.7)	(488.6)
Net cash provided from (used for) financing activities - discontinued operations	0
Net cash used for financing activities	(445.7)	(488.6)
Effect of exchange rate changes on cash	(2.0)	6.0
Net change in cash during the period	251.9	(20.7)
Net change in cash from discontinued operations	(191.2)	(5.5)
Cash balances at beginning of period (excludes restricted cash balances of $286.7 and $217.1 and AutoOne cash of $4.7 and $3.9)	103.7	120.0
Cash balances at end of period (excludes restricted cash balances of $393.3 and $273.1 and AutoOne cash of $0 and $4.4)	164.4	93.8
Supplemental cash flows information:
Interest paid	(38.5)	(49.6)
Net income tax payments to national governments	$ (6.4)	$ (10.6)