Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net income	$ 55.8	$ 143.8	$ 200.6
Adjustments to reconcile net income to net cash provided by operating activities:
Share compensation	11.4	6.6	7.0
Net interest expense on deposit liabilities	3.7	0.9	5.9
Net realized and unrealized (gain) loss on investments and derivatives	3.0	(62.5)	(2.5)
Net realized and unrealized gain on investment in related party investment funds	(304.0)	(195.0)	(249.6)
Other revenues	(100.1)	0.0	0.0
Gain from sale of consolidated subsidiary	(5.8)	0.0	0.0
Amortization of premium and accretion of discount, net	9.5	(3.8)	(1.4)
Amortization of intangible assets	5.9	0.0	0.0
Depreciation and other amortization	6.1	0.0	0.0
Other items, net	(26.3)	5.2	3.6
Changes in assets and liabilities:
Insurance and reinsurance balances receivable, net	(48.3)	38.6	20.4
Deferred acquisition costs and value of business acquired, net	(2.3)	23.6	24.8
Unearned premiums ceded	(33.3)	(17.3)	(1.5)
Loss and loss adjustment expenses recoverable, net	(390.2)	(8.9)	(3.5)
Deferred tax asset/liability	(44.8)	7.9	0.7
Other assets	34.8	(4.6)	(0.8)
Interest and dividends receivable	0.6	1.3	(0.9)
Loss and loss adjustment expense reserves	614.8	190.3	157.8
Unearned premium reserves	13.6	(51.3)	(41.6)
Reinsurance balances payable	223.0	1.8	11.5
Accounts payable, accrued expenses and other liabilities	(25.5)	(3.3)	10.6
Net cash provided by operating activities	1.6	73.3	141.1
Investing activities
Proceeds from redemptions from related party investment funds	200.0	0.0	760.0
Contributions to related party investment funds	0.0	0.0	(87.0)
Change in participation agreement with related party investment funds	0.0	0.0	(2.3)
Purchases of investments	(3,398.7)	(444.1)	(331.4)
Proceeds from sales and maturities of investments	2,687.9	532.2	446.2
Purchases of investments to cover short sales	(20.6)	(2.8)	0.0
Proceeds from short sales of investments	9.7	15.7	0.0
Change in due to/from brokers, net	77.9	(95.0)	1.4
Acquisition of Sirius Group, net (cash and restricted cash acquired of $740.3)	631.9	0.0	0.0
Proceeds from sale of consolidated subsidiary, net of cash sold	20.5	0.0	0.0
Net cash provided by investing activities	208.6	6.0	786.9
Financing activities
Proceeds from issuance of SiriusPoint common shares, net of costs	50.8	0.0	1.9
Taxes paid on withholding shares	(0.5)	(0.3)	(0.1)
Cash dividends paid to preference shareholders	(12.2)	0.0	0.0
Net proceeds (payments) on deposit liability contracts	(14.0)	(20.2)	10.8
Change in total noncontrolling interests, net	0.2	1.1	0.0
Net cash provided by (used in) financing activities	24.3	(19.4)	12.6
Net increase in cash, cash equivalents and restricted cash	234.5	59.9	940.6
Cash, cash equivalents and restricted cash at beginning of year	1,713.9	1,654.0	713.4
Cash, cash equivalents and restricted cash at end of year	1,948.4	1,713.9	1,654.0
Supplementary information
Interest paid in cash	39.3	8.3	8.1
Income taxes paid in cash	$ 14.7	$ 0.1	$ 0.0