Segment Information

6 Months Ended

Jun. 30, 2014

Segment Reporting [Abstract]

Segment Informartion

Segment Information

White Mountains has determined that its reportable segments are OneBeacon, Sirius Group, HG Global/BAM and Other Operations.

White Mountains has made its segment determination based on consideration of the following criteria: (i) the nature of the business activities of each of the Company’s subsidiaries and affiliates; (ii) the manner in which the Company’s subsidiaries and affiliates are organized; (iii) the existence of primary managers responsible for specific subsidiaries and affiliates; and (iv) the organization of information provided to the chief operating decision makers and the Board of Directors.

Significant intercompany transactions among White Mountains’s segments have been eliminated herein. Financial information for White Mountains’s segments follows:

						HG Global/BAM
Millions	OneBeacon		Sirius Group			HG		BAM			Other Operations			Total
Three Months Ended June 30, 2014
Earned insurance and reinsurance premiums	$	290.9	$	209.6		$	.3	$	.1		$	2.5		$	503.4
Net investment income	11.7		11.8			.3		1.4			3.9			29.1
Net investment income (loss) - surplus note    interest	—		—			4.0		(4.0		)	—			—
Net realized and unrealized investment gains	21.9		58.4			.9		3.8			28.9			113.9
Other revenue	1.0		(19.2		)	—		.1			24.5			6.4
Total revenues	325.5		260.6			5.5		1.4			59.8			652.8
Losses and LAE	186.1		91.4			—		—			5.2			282.7
Insurance and reinsurance acquisition expenses	49.6		48.8			.1		.5			(.1		)	98.9
Other underwriting expenses	51.7		30.2			—		.1			(.1		)	81.9
General and administrative expenses	3.6		6.9			.4		8.8			50.6			70.3
Interest expense	3.3		6.6			—		—			.1			10.0
Total expenses	294.3		183.9			.5		9.4			55.7			543.8
Pre-tax income (loss)	$	31.2	$	76.7		$	5.0	$	(8.0	)	$	4.1		$	109.0

						HG Global/BAM
Millions	OneBeacon		Sirius Group			HG		BAM			Other Operations			Total
Six Months Ended June 30, 2014
Earned insurance and reinsurance premiums	$	567.4	$	425.1		$	.5	$	.2		$	3.8		$	997.0
Net investment income	21.7		20.5			.6		2.8			7.8			53.4
Net investment income (loss) - surplus note    interest	—		—			7.9		(7.9		)	—			—
Net realized and unrealized investment gains	40.8		86.5			1.6		6.8			42.0			177.7
Other revenue	2.0		(24.5		)	—		.3			25.2			3.0
Total revenues	631.9		507.6			10.6		2.2			78.8			1,231.1
Losses and LAE	335.5		170.2			—		—			6.3			512.0
Insurance and reinsurance acquisition expenses	96.3		96.2			.2		.9			.4			194.0
Other underwriting expenses	101.1		62.0			—		.2			—			163.3
General and administrative expenses	6.9		15.3			.8		17.7			79.9			120.6
Interest expense	6.5		13.2			—		—			.4			20.1
Total expenses	546.3		356.9			1.0		18.8			87.0			1,010.0
Pre-tax income (loss)	$	85.6	$	150.7		$	9.6	$	(16.6	)	$	(8.2	)	$	221.1

							HG Global/BAM
Millions	OneBeacon			Sirius Group			HG			BAM			Other Operations			Total
Three Months Ended June 30, 2013
Earned insurance and reinsurance premiums	$	280.8		$	216.6		$	.1		$	—		$	—		$	497.5
Net investment income	11.4			11.4			.2			1.1			4.6			28.7
Net investment income (loss) - surplus note    interest	—			—			10.0			(10.0		)	—			—
Net realized and unrealized investment    (losses) gains	(25.5		)	6.7			(2.0		)	(9.4		)	(7.1		)	(37.3		)
Other revenue	.6			(16.0		)	—			—			15.8			.4
Total revenues	267.3			218.7			8.3			(18.3		)	13.3			489.3
Losses and LAE	157.0			117.6			—			—			—			274.6
Insurance and reinsurance acquisition expenses	52.5			23.2			—			.4			—			76.1
Other underwriting expenses	54.6			29.8			—			.1			—			84.5
General and administrative expenses	2.9			6.0			.5			7.9			22.9			40.2
Interest expense	3.3			6.5			—			—			.5			10.3
Total expenses	270.3			183.1			.5			8.4			23.4			485.7
Pre-tax (loss) income	$	(3.0	)	$	35.6		$	7.8		$	(26.7	)	$	(10.1	)	$	3.6

						HG Global/BAM
Millions	OneBeacon		Sirius Group			HG			BAM			Other Operations		Total
Six Months Ended June 30, 2013
Earned insurance and reinsurance premiums	$	567.3	$	425.5		$	.1		$	—		$	—	$	992.9
Net investment income	20.8		24.5			.5			2.2			9.2		57.2
Net investment income (loss) - surplus note    interest	—		—			20.1			(20.1		)	—		—
Net realized and unrealized investment    gains (losses)	2.9		19.8			(2.2		)	(10.5		)	27.9		37.9
Other revenue	24.6		(5.5		)	—			.1			9.5		28.7
Total revenues	615.6		464.3			18.5			(28.3		)	46.6		1,116.7
Losses and LAE	305.9		213.0			—			—			—		518.9
Insurance and reinsurance acquisition expenses	107.3		66.5			—			.5			—		174.3
Other underwriting expenses	103.9		59.5			—			.2			—		163.6
General and administrative expenses	6.9		15.5			.8			16.1			44.7		84.0
Interest expense	6.5		13.1			—			—			.9		20.5
Total expenses	530.5		367.6			.8			16.8			45.6		961.3
Pre-tax income (loss)	$	85.1	$	96.7		$	17.7		$	(45.1	)	$	1.0	$	155.4