CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues:
Earned insurance and reinsurance premiums	$ 495.4	$ 498.0
Net investment income	28.5	41.8
Net realized and unrealized investment gains	75.2	58.6
Other revenue	28.3	31.2
Total revenues	627.4	629.6
Expenses:
Loss and loss adjustment expenses	244.3	249.8
Insurance and reinsurance acquisition expenses	98.2	109.1
Other underwriting expenses	79.1	73.5
General and administrative expenses	43.8	45.5
Interest expense on debt	10.2	10.9
Total expenses	475.6	488.8
Pre-tax income from continuing operations	151.8	140.8
Income tax expense	(41.6)	(31.1)
Net income from continuing operations	110.2	109.7
Net income (loss) from discontinued operations, net of tax	0.5	(9.3)
Income before equity in earnings of unconsolidated affiliates	110.7	100.4
Equity in earnings of unconsolidated affiliates, net of tax	9.2	10.2
Net income	119.9	110.6
Net loss (income) attributable to non-controlling interests	0.5	(16.8)
Net income attributable to White Mountains’ common shareholders	120.4	93.8
Other comprehensive income, net of tax:
Change in equity in net unrealized losses from investments in unconsolidated affiliates	(8.0)	(1.2)
Change in foreign currency translation and other	(3.7)	23.5
Comprehensive income	108.7	116.1
Comprehensive income attributable to non-controlling interests	0	0
Comprehensive income attributable to White Mountains’ common shareholders	$ 108.7	$ 116.1
Income (loss) per share attributable to White Mountains’ common shareholders
Continuing operations	$ 19.10	$ 13.86
Discontinued operations	$ 0.07	$ (1.25)
Total consolidated operations	$ 19.17	$ 12.61
Diluted income (loss) per share
Continuing operations	$ 19.10	$ 13.86
Discontinued operations	$ 0.07	$ (1.25)
Total consolidated operations	$ 19.17	$ 12.61
Dividends declared per White Mountains’ common share	$ 1	$ 1