SCHEDULE II CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT (Balance Sheet) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Fixed maturity investments, at fair value		$ 2,081.1
Common equity securities, at fair value		0.0
Total assets	$ 3,659.2	6,520.2
Liabilities
Debt	23.8	12.7
Total liabilities	298.4	2,804.2
White Mountains’s common shareholders’ equity (3)	3,360.8	3,716.0
Total liabilities and equity	3,659.2	6,520.2
Fair value investments	3,208.3	2,547.3	$ 1,543.5
White Mountains Insurance Group Ltd.
Assets
Cash	14.9	3.1
Fixed maturity investments, at fair value	869.6	80.0
Common equity securities, at fair value			$ 641.8
Other long-term investments	(3.7)	(1.2)
Short-term investments, at amortized cost	57.2	12.5
Other assets	30.9	21.8
Investments in consolidated subsidiaries (3)	1,914.8	4,877.6
Total assets	3,525.5	4,993.8
Liabilities
Payable to subsidiary	11.8	1,387.2
Other liabilities	21.2	23.9
Total liabilities	33.0	1,411.1
White Mountains’s common shareholders’ equity (3)	3,492.5	3,582.7
Total liabilities and equity	3,525.5	4,993.8
WOBI
Assets
Investments in consolidated subsidiaries (3)		(20.6)
Barclays Bank PLC | A | Forward Contracts
Liabilities
Fair value investments	$ (3.7)	$ (1.2)