CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets
Fixed maturity investments, at fair value	$ 4,784.3	$ 5,030.5
Short-term investments, at amortized cost (which approximates fair value)	871.7	635.9
Common equity securities, at fair value	801.6	1,156.8
Convertible fixed maturity and preferred investments, at fair value	20.5	80.5
Other long-term investments	408.2	288.9
Total investments	6,886.3	7,192.6
Cash (restricted $23.7 and $56.1)	373.2	382.8
Reinsurance recoverable on unpaid losses	483.9	428.1
Reinsurance recoverable on paid losses	23.6	25.4
Insurance and reinsurance premiums receivable	547.7	518.9
Funds held by ceding entities	129.0	106.3
Investments in unconsolidated affiliates	414.4	321.4
Deferred acquisition costs	177.1	174.7
Deferred tax asset	456.1	512.1
Ceded unearned insurance and reinsurance premiums	94.0	92.4
Accrued investment income	34.5	39.3
Accounts receivable on unsettled investment sales	56.5	12.1
Goodwill and intangible assets	366.4	20.7
Other assets	356.1	437.4
Assets held for sale	58.1	1,880.1
Total assets	10,456.9	12,144.3
Liabilities
Loss and loss adjustment expense reserves	3,159.8	3,079.3
Unearned insurance and reinsurance premiums	955.3	901.4
Debt	746.6	676.4
Deferred tax liability	282.8	356.2
Accrued incentive compensation	184.6	218.3
Ceded reinsurance payable	105.7	71.9
Funds held under insurance and reinsurance contracts	138.9	127.1
Accounts payable on unsettled investment purchases	2.6	20.5
Other liabilities	341.0	415.7
Liabilities held for sale	0	1,880.1
Total liabilities	5,917.3	7,746.9
White Mountains’s common shareholders’ equity
White Mountains’s common shares at $1 par value per share—authorized 50,000,000 shares; issued and outstanding 5,986,214 and 6,176,739 shares	6.0	6.2
Paid-in surplus	1,028.7	1,044.9
Retained earnings	3,011.4	2,802.3
Accumulated other comprehensive income (loss), after-tax:
Equity in net unrealized (losses) gains from investments in Symetra common shares	34.9	(40.4)
Net unrealized foreign currency translation (losses) gains	(79.8)	88.4
Pension liability and other	(4.6)	4.1
Total White Mountains’s common shareholders’ equity	3,996.6	3,905.5
Non-controlling interests
Non-controlling interests	543.0	491.9
Total equity	4,539.6	4,397.4
Total liabilities and equity	$ 10,456.9	$ 12,144.3