CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Earned insurance premiums	$ 227.8	$ 124.3	$ 430.6	$ 235.3
Net investment income	25.1	17.1	45.7	37.7
Net realized and unrealized investment gains (losses)	(104.1)	59.6	(112.5)	60.7
Net realized and unrealized investment gains (losses) from investment in MediaAlpha	(113.5)	113.0	(94.7)	71.3
Commission revenues	2.6	2.3	5.5	4.6
Other revenues	38.8	26.1	62.5	36.2
Total revenues	76.7	342.4	337.1	445.8
Expenses:
Loss and loss adjustment expenses	120.5	52.6	242.5	118.6
Insurance and reinsurance acquisition expenses	55.0	35.6	107.9	74.2
Cost of sales	22.4	17.9	43.8	21.9
General and administrative expenses	100.3	71.2	171.3	163.6
Interest expense	10.1	3.2	17.0	10.4
Amortization of other intangible assets	1.0	0.5	2.0	1.1
Total expenses	309.3	181.0	584.5	389.8
Pre-tax income (loss) from continuing operations	(232.6)	161.4	(247.4)	56.0
Income tax (expense) benefit	16.0	(30.0)	18.7	(23.6)
Net income (loss) from continuing operations	(216.6)	131.4	(228.7)	32.4
Net gain (loss) from sale of discontinued operations, net of tax - Sirius	0.0	0.0	0.0	18.7
Net income (loss) income from NSM Group discontinued operations	6.4	1.1	10.1	(29.1)
Net income (loss)	(210.2)	132.5	(218.6)	22.0
Net (income) loss attributable to non-controlling interests	41.0	6.0	82.8	41.2
Net income (loss) attributable to White Mountains’s common shareholders	(169.2)	138.5	(135.8)	63.2
Financial Guarantee (HG Global/BAM)
Revenues:
Earned insurance premiums	10.5	6.5	18.9	12.9
Net investment income	4.8	4.3	9.4	8.8
Net realized and unrealized investment gains (losses)	(30.1)	6.3	(75.2)	(11.6)
Net realized and unrealized investment gains (losses) from investment in MediaAlpha	0.0	0.0	0.0	0.0
Commission revenues	0.0	0.0	0.0	0.0
Other revenues	1.6	0.3	2.4	0.6
Total revenues	(13.2)	17.4	(44.5)	10.7
Expenses:
Loss and loss adjustment expenses	0.0	0.0	0.0	0.0
Insurance and reinsurance acquisition expenses	4.8	1.6	7.8	3.5
Cost of sales	0.0	0.0	0.0	0.0
General and administrative expenses	17.4	13.9	33.7	30.3
Interest expense	3.4	0.0	3.4	0.0
Amortization of other intangible assets	0.0	0.0	0.0	0.0
Total expenses	25.6	15.5	44.9	33.8
Pre-tax income (loss) from continuing operations	(38.8)	1.9	(89.4)	(23.1)
P&C Insurance and Reinsurance (Ark)
Revenues:
Earned insurance premiums	217.3	117.8	411.7	222.4
Net investment income	3.2	0.4	4.8	1.2
Net realized and unrealized investment gains (losses)	(44.6)	8.9	(62.1)	10.0
Net realized and unrealized investment gains (losses) from investment in MediaAlpha	0.0	0.0	0.0	0.0
Commission revenues	0.0	0.0	0.0	0.0
Other revenues	6.3	3.4	3.5	6.0
Total revenues	182.2	130.5	357.9	239.6
Expenses:
Loss and loss adjustment expenses	120.5	52.6	242.5	118.6
Insurance and reinsurance acquisition expenses	50.2	34.0	100.1	70.7
Cost of sales	0.0	0.0	0.0	0.0
General and administrative expenses	29.8	24.8	52.9	62.6
Interest expense	3.1	1.3	6.9	2.4
Amortization of other intangible assets	0.0	0.0	0.0	0.0
Total expenses	203.6	112.7	402.4	254.3
Pre-tax income (loss) from continuing operations	(21.4)	17.8	(44.5)	(14.7)
Asset Management (Kudu)
Revenues:
Earned insurance premiums	0.0	0.0	0.0	0.0
Net investment income	13.8	8.4	26.4	16.6
Net realized and unrealized investment gains (losses)	(17.6)	27.8	4.7	43.6
Net realized and unrealized investment gains (losses) from investment in MediaAlpha	0.0	0.0	0.0	0.0
Commission revenues	0.0	0.0	0.0	0.0
Other revenues	0.0	0.0	0.0	0.1
Total revenues	(3.8)	36.2	31.1	60.3
Expenses:
Loss and loss adjustment expenses	0.0	0.0	0.0	0.0
Insurance and reinsurance acquisition expenses	0.0	0.0	0.0	0.0
Cost of sales	0.0	0.0	0.0	0.0
General and administrative expenses	3.0	3.2	5.7	5.7
Interest expense	3.3	1.5	6.1	7.3
Amortization of other intangible assets	0.1	0.1	0.2	0.2
Total expenses	6.4	4.8	12.0	13.2
Pre-tax income (loss) from continuing operations	(10.2)	31.4	19.1	47.1
Other Operations
Revenues:
Earned insurance premiums	0.0	0.0	0.0	0.0
Net investment income	3.3	4.0	5.1	11.1
Net realized and unrealized investment gains (losses)	(11.8)	16.6	20.1	18.7
Net realized and unrealized investment gains (losses) from investment in MediaAlpha	(113.5)	113.0	(94.7)	71.3
Commission revenues	2.6	2.3	5.5	4.6
Other revenues	30.9	22.4	56.6	29.5
Total revenues	(88.5)	158.3	(7.4)	135.2
Expenses:
Loss and loss adjustment expenses	0.0	0.0	0.0	0.0
Insurance and reinsurance acquisition expenses	0.0	0.0	0.0	0.0
Cost of sales	22.4	17.9	43.8	21.9
General and administrative expenses	50.1	29.3	79.0	65.0
Interest expense	0.3	0.4	0.6	0.7
Amortization of other intangible assets	0.9	0.4	1.8	0.9
Total expenses	73.7	48.0	125.2	88.5
Pre-tax income (loss) from continuing operations	$ (162.2)	$ 110.3	$ (132.6)	$ 46.7