Segment Information (Tables)

12 Months Ended

Dec. 31, 2011

Segment Information

Financial information for White Mountains' segments

Financial information for White Mountains’ segments follows:

Millions	OneBeacon			Sirius Group			Other Operations			Total
Year ended December 31, 2011:
Earned insurance and reinsurance premiums	$	1,015.5		$	912.3		$	—		$	1,927.8
Net investment income	71.4			89.9			23.2			184.5
Net realized and unrealized investment gains (losses)	10.6			101.9			10.3			122.8
Other revenue	(10.7		)	(44.6		)	(1.7		)	(57.0		)
Total revenues	1,086.8			1,059.5			31.8			2,178.1
Losses and LAE	580.9			626.0			—			1,206.9
Insurance and reinsurance acquisition expenses	219.0			181.0			—			400.0
Other underwriting expenses	173.3			105.8			—			279.1
General and administrative expenses	9.8			34.1			131.4			175.3
Interest expense on debt	20.5			31.6			3.1			55.2
Total expenses	1,003.5			978.5			134.5			2,116.5
Pre-tax income (loss)	$	83.3		$	81.0		$	(102.7	)	$	61.6

Millions	OneBeacon		Sirius Group			Other Operations			Total
Year ended December 31, 2010:
Earned insurance and reinsurance premiums	$	1,403.9	$	847.9		$	—		$	2,251.8
Net investment income	96.6		96.5			15.8			208.9
Net realized and unrealized investment gains (losses)	74.6		(9.8		)	17.8			82.6
Other revenue	9.6		35.9			(22.1		)	23.4
Total revenues	1,584.7		970.5			11.5			2,566.7
Losses and LAE	858.2		531.0			—			1,389.2
Insurance and reinsurance acquisition expenses	311.6		167.5			—			479.1
Other underwriting expenses	233.1		99.8			—			332.9
General and administrative expenses	13.0		31.6			110.5			155.1
Interest expense on debt	29.6		26.6			1.1			57.3
Total expenses	1,445.5		856.5			111.6			2,413.6
Pre-tax income (loss)	$	139.2	$	114.0		$	(100.1	)	$	153.1

Millions	OneBeacon		Sirius Group		Other Operations			Total
Year ended December 31, 2009:
Earned insurance and reinsurance premiums	$	1,858.8	$	858.8	$	—		$	2,717.6
Net investment income	125.5		110.3		14.3			250.1
Net realized and unrealized investment gains	248.6		112.6		.5			361.7
Other revenue	23.1		106.5		(15.7		)	113.9
Total revenues	2,256.0		1,188.2		(.9		)	3,443.3
Losses and LAE	1,005.3		418.8		—			1,424.1
Insurance and reinsurance acquisition expenses	376.3		170.9		—			547.2
Other underwriting expenses	308.5		98.1		—			406.6
General and administrative expenses	18.5		74.4		104.5			197.4
Interest expense on debt	39.7		26.3		4.8			70.8
Total expenses	1,748.3		788.5		109.3			2,646.1
Pre-tax income (loss)	$	507.7	$	399.7	$	(110.2	)	$	797.2

Schedule of selected balance sheet data of the segments

Selected Balance Sheet DataMillions	OneBeacon		Sirius Group		Other Operations		DiscontinuedOperations		Total
December 31, 2011:
Total investments	$	2,707.6	$	3,640.5	$	1,919.9	$	—	$	8,268.0
Reinsurance recoverable on paid and unpaid losses	2,184.1		353.7		—		—		2,537.8
Assets held for sale	132.6		—		—		—		132.6
Total assets	5,792.4		5,337.9		2,933.7		—		14,064.0
Loss and LAE reserves	3,358.6		2,343.7		—		—		5,702.3
Liabilities held for sale	107.6		—		—		—		107.6
Total liabilities	4,678.5		3,784.1		933.5		—		9,396.1
Noncontrolling interest	287.2		289.5		3.5		—		580.2
Total White Mountains’ common shareholders’ equity	826.7		1,264.3		1,996.7		—		4,087.7
December 31, 2010:
Total investments	$	3,266.0	$	4,116.2	$	561.3	$	—	$	7,943.5
Reinsurance recoverable on paid and unpaid losses	1,937.7		469.4		—		—		2,407.1
Assets held for sale	—		—		—		1,122.8		1,122.8
Total assets	6,138.3		5,618.7		1,654.3		1,122.8		14,534.1
Loss and LAE reserves	3,295.5		2,441.3		—		—		5,736.8
Liabilities held for sale	—		—		—		751.5		751.5
Total liabilities	4,889.4		3,863.0		769.4		751.5		10,273.3
Noncontrolling interest	314.9		290.6		2.3		—		607.8
Total White Mountains’ common shareholders’ equity	934.0		1,465.1		882.6		371.3		3,653.0