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Reserves for Unpaid Losses and Loss Adjustment Expenses (Tables)

12 Months Ended

Dec. 31, 2016

Insurance Loss Reserves [Abstract]

Loss and LAE reserve activities

The following table summarizes the ending liabilities for unpaid loss and LAE, net of reinsurance for each of OneBeacon’s major lines of business by underwriting group as of December 31, 2016:

Liabilities for unpaid claims and claims adjustment expenses, net of reinsurance Millions		As of December 31, 2016
Specialty Products - Property		$	30.2
Specialty Industries - Property		108.5
Specialty Products - Casualty		568.7
Specialty Industries - Casualty		360.0
Specialty Products - Other		38.2
Specialty Industries - Other		47.4
Total unpaid and undiscounted loss and allocated LAE reserves, net of reinsurance		1,153.0
Less: Discount on workers compensation reserves		(1.6		)
Total unpaid loss and allocated LAE reserves, net of reinsurance		1,151.4
Plus: Unallocated LAE		41.3
Total unpaid loss and LAE reserves, net of reinsurance		1,192.7
Plus: Reinsurance recoverables on unpaid losses
Specialty Products - Property		40.9
Specialty Industries - Property		13.2
Specialty Products - Casualty		64.0
Specialty Industries - Casualty		19.9
Specialty Products - Other		16.0
Specialty Industries - Other		.6
Investing, Financing and Corporate (1)		18.3
Plus: Total Reinsurance recoverables on unpaid losses		172.9
Total unpaid loss and LAE reserves		$	1,365.6

⁽¹⁾ OneBeacon’s subsidiary, Atlantic Specialty Insurance Company (“ASIC”) , entered into a 100% quota share reinsurance agreement with OBIC, an entity sold to Armour, as part of the sale of the Runoff Business. See Note 22 — “Held for Sale and Discontinued Operations”. As of December 31, 2016, $18.3 is included in reinsurance recoverables on unpaid losses within Investing, Financing, and Corporate resulting from that agreement.

The following table reconciles loss and LAE reserves determined on a statutory basis to loss and LAE reserves determined in accordance with GAAP as of December 31, 2016 and 2015 as follows:

		December 31,
Millions		2016				2015
Statutory reserves (unaudited)		$	1,192.7			$	1,203.8
Reinsurance recoverable on unpaid losses and LAE (1)		172.9				186.0
GAAP reserves		$	1,365.6			$	1,389.8

⁽¹⁾  Represents adjustments made to add back reinsurance recoverables on unpaid losses and LAE included with the presentation of reserves under statutory accounting.

The following table summarizes the loss and LAE reserve activities of White Mountains’s insurance subsidiaries for the years ended December 31, 2016, 2015 and 2014:

		Year Ended December 31,
Millions		2016				2015				2014
Gross beginning balance		$	1,389.8			$	1,342.2			$	1,054.3
Less beginning reinsurance recoverable on unpaid losses		(186.0		)		(161.6		)		(80.2		)
Net loss and LAE reserves		1,203.8				1,180.6				974.1
Loss and LAE reserves consolidated - SSIE		—				—				13.6
Add: SSIE reserves held for sale at the beginning of the period (1)		5.5				7.7				—
Losses and LAE incurred relating to:
Current year losses		649.2				712.9				732.0
Prior year losses		14.8				(4.0		)		92.0
Total incurred losses and LAE		664.0				708.9				824.0
Loss and LAE paid relating to:
Current year losses		(192.8		)		(208.8		)		(202.6		)
Prior year losses		(483.1		)		(479.1		)		(420.8		)
Total loss and LAE payments		(675.9		)		(687.9		)		(623.4		)
Less: SSIE reserves held for sale at the end of the period (1)		4.7				5.5				7.7
Net ending balance		1,192.7				1,203.8				1,180.6
Plus ending reinsurance recoverable on unpaid losses		172.9				186.0				161.6
Gross ending balance		$	1,365.6			$	1,389.8			$	1,342.2

Loss and LAE Reserve and Net Loss and LAE Development

The components of the 2014 fourth quarter loss and LAE reserve increase and the net loss and LAE development for the full year are provided below:

Underwriting Unit		2014 Fourth Quarter Reserve Increases												Full Year 2014
Millions		Current Accident Year				Prior Accident Year				Total				Net Prior Year Development
Professional Insurance (1)		$	22.9			$	46.4			$	69.3			$	59.1
Specialty Property		(1.1		)		5.7				4.6				1.1
Crop Business		3.8				—				3.8				—
Other		2.8				(.4		)		2.4				1.6
Specialty Products		28.4				51.7				80.1				61.8
Entertainment		1.5				11.6				13.1				13.5
Government Risks		1.2				7.1				8.3				8.5
Accident		—				3.5				3.5				6.0
Other		2.6				1.6				4.2				—
Specialty Industries		5.3				23.8				29.1				28.0
Total		$	33.7			$	75.5			$	109.2			$	89.8

⁽¹⁾ Professional Insurance includes Other Professional Lines, Management Liability, Financial Services and Healthcare.

Incurred Loss, Cumulative Paid Loss, and Allocated LAE, Net of Reinsurance

Specialty Products - Casualty
$ in millions
		Incurred Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,																																As of December 31, 2016
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016				Total IBNR plus expected development on reported claims			Cumulative number of reported claims
		Unaudited
2007		$	138.3		$	120.2		$	97.3		$	90.7		$	70.5		$	70.1		$	61.8		$	58.3		$	57.1			$	56.5			$	2.5		1,236
2008		—			145.6			128.6			118.2			100.8			98.3			95.5			95.3			97.3				96.8				3.3			2,199
2009		—			—			169.5			186.2			194.9			193.2			192.0			194.9			195.0				195.5				4.9			4,002
2010		—			—			—			211.5			225.4			226.2			225.0			232.3			234.9				240.0				7.8			6,029
2011		—			—			—			—			194.9			189.8			205.4			214.2			214.8				214.9				9.4			6,661
2012		—			—			—			—			—			213.5			220.1			246.1			248.8				249.4				14.4			6,794
2013		—			—			—			—			—			—			205.2			233.1			229.6				247.9				20.3			5,866
2014		—			—			—			—			—			—			—			240.5			235.9				258.9				44.4			6,504
2015		—			—			—			—			—			—			—			—			206.9				213.4				78.5			9,710
2016		—			—			—			—			—			—			—			—			—				202.8				142.8			9,093
																										Total				$	1,976.1

Specialty Products - Casualty
$ in millions
		Cumulative Paid Losses and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016
		Unaudited
2007		$	6.8		$	24.8		$	32.4		$	41.7		$	44.4		$	50.7		$	51.9		$	53.6		$	54.0			$	54.0
2008		—			8.8			32.3			50.8			65.4			77.6			83.1			85.3			88.1				91.5
2009		—			—			26.5			81.8			124.0			147.8			161.4			169.9			178.3				187.8
2010		—			—			—			32.0			107.0			157.8			180.5			196.3			213.6				220.3
2011		—			—			—			—			25.8			88.9			131.3			163.7			186.2				192.5
2012		—			—			—			—			—			25.8			86.7			157.7			193.6				219.8
2013		—			—			—			—			—			—			26.4			86.3			143.1				194.2
2014		—			—			—			—			—			—			—			34.3			95.2				156.7
2015		—			—			—			—			—			—			—			—			19.9				78.4
2016		—			—			—			—			—			—			—			—			—				16.5
																										Total				1,411.7
All outstanding liabilities before 2007, net of reinsurance																														4.3
Liabilities for loss and allocated LAE, net of reinsurance																														$	568.7

Specialty Industries - Other
$ in millions
		Incurred Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,																																As of December 31, 2016
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016				Total IBNR plus expected development on reported claims			Cumulative number of reported claims
		Unaudited
2007		$	4.3		$	4.6		$	4.5		$	4.4		$	4.4		$	4.4		$	4.4		$	4.4		$	4.4			$	4.4			$	—		291
2008		—			10.4			10.8			12.2			11.9			11.9			11.8			12.1			12.1				12.3				—			975
2009		—			—			19.1			19.2			19.0			19.3			20.9			21.4			21.5				21.7				.2			1,763
2010		—			—			—			25.6			26.6			27.1			27.9			28.2			28.4				28.4				—			2,449
2011		—			—			—			—			35.1			36.0			37.7			38.5			38.2				38.2				.2			3,638
2012		—			—			—			—			—			42.0			39.6			40.1			41.1				41.6				.3			3,861
2013		—			—			—			—			—			—			41.1			41.2			42.2				42.5				.7			4,245
2014		—			—			—			—			—			—			—			42.6			40.4				40.6				1.9			3,497
2015		—			—			—			—			—			—			—			—			46.6				31.9				4.9			3,301
2016		—			—			—			—			—			—			—			—			—				33.2				19.4			2,222
																										Total				$	294.8

Specialty Industries - Other
$ in millions
		Cumulative Paid Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016
		Unaudited
2007		$	1.2		$	4.0		$	4.3		$	4.3		$	4.3		$	4.3		$	4.3		$	4.4		$	4.4			$	4.4
2008		—			3.8			9.0			11.1			11.7			11.8			11.7			12.0			12.0				12.2
2009		—			—			6.3			14.6			17.7			18.3			19.2			21.2			21.4				21.4
2010		—			—			—			8.3			22.9			25.1			26.9			27.6			28.0				28.1
2011		—			—			—			—			13.5			29.4			34.6			36.5			37.2				37.3
2012		—			—			—			—			—			13.2			30.7			35.8			38.3				39.1
2013		—			—			—			—			—			—			13.0			29.3			37.2				39.6
2014		—			—			—			—			—			—			—			12.6			28.9				34.8
2015		—			—			—			—			—			—			—			—			9.8				22.2
2016		—			—			—			—			—			—			—			—			—				8.0
																										Total				$	247.1
All outstanding liabilities before 2007, net of reinsurance																														(.3		)
Liabilities for loss and allocated LAE, net of reinsurance																														$	47.4

Specialty Industries - Property
$ in millions
		Incurred Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,																																As of December 31, 2016
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016				Total IBNR plus expected development on reported claims			Cumulative number of reported claims
		Unaudited
2007		$	110.0		$	104.8		$	101.3		$	94.9		$	95.1		$	95.3		$	95.1		$	95.1		$	95.1			$	94.9			$	—		4,828
2008		—			147.3			137.6			129.6			129.3			132.0			132.7			130.0			129.8				129.7				.1			6,603
2009		—			—			124.5			118.6			118.2			117.9			118.8			118.6			118.7				118.6				.1			6,718
2010		—			—			—			131.4			131.5			127.2			130.0			129.7			131.4				131.2				—			8,617
2011		—			—			—			—			138.5			141.5			141.1			143.5			143.2				142.5				.3			9,704
2012		—			—			—			—			—			126.9			123.8			126.7			130.4				130.1				.8			9,697
2013		—			—			—			—			—			—			125.1			127.0			142.9				143.6				1.9			8,085
2014		—			—			—			—			—			—			—			123.9			123.5				130.1				3.9			8,352
2015		—			—			—			—			—			—			—			—			142.3				138.9				10.2			8,607
2016		—			—			—			—			—			—			—			—			—				120.3				32.8			7,429
																										Total				$	1,279.9

Specialty Industries - Property
$ in millions
		Cumulative Paid Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016
		Unaudited
2007		$	42.2		$	70.9		$	82.7		$	87.6		$	91.7		$	93.4		$	94.2		$	94.5		$	94.5			$	94.6
2008		—			62.5			101.4			116.8			123.4			129.5			129.1			129.2			129.3				129.3
2009		—			—			50.4			85.9			105.4			111.0			115.5			117.2			118.0				118.4
2010		—			—			—			69.0			106.2			118.2			122.8			125.9			129.3				130.8
2011		—			—			—			—			72.5			117.4			130.7			138.0			139.5				141.4
2012		—			—			—			—			—			64.2			103.1			116.4			128.5				131.9
2013		—			—			—			—			—			—			59.8			101.5			126.1				137.7
2014		—			—			—			—			—			—			—			56.5			94.6				111.6
2015		—			—			—			—			—			—			—			—			68.6				114.4
2016		—			—			—			—			—			—			—			—			—				61.3
																										Total				$	1,171.4
All outstanding liabilities before 2007, net of reinsurance																														—
Liabilities for loss and allocated LAE, net of reinsurance																														$	108.5

Specialty Products - Other
$ in millions
		Incurred Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,																																As of December 31, 2016
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016				Total IBNR plus expected development on reported claims			Cumulative number of reported claims
		Unaudited
2007		$	26.8		$	26.7		$	26.8		$	28.6		$	28.6		$	28.6		$	28.6		$	28.6		$	28.6			$	28.6			$	—		5,073
2008		—			31.7			31.5			31.2			31.2			31.2			31.2			31.2			31.2				31.2				—			5,192
2009		—			—			33.8			31.4			31.3			30.8			30.9			30.9			30.9				30.9				—			5,138
2010		—			—			—			34.7			34.3			32.5			32.6			32.5			32.5				32.5				—			5,182
2011		—			—			—			—			33.2			35.5			35.4			35.4			35.4				35.4				—			5,306
2012		—			—			—			—			—			36.6			36.9			36.9			36.9				37.0				—			5,324
2013		—			—			—			—			—			—			39.6			40.6			39.2				39.2				—			5,510
2014		—			—			—			—			—			—			—			96.6			90.8				92.9				—			9,971
2015		—			—			—			—			—			—			—			—			75.5				73.2				1.8			10,704
2016		—			—			—			—			—			—			—			—			—				77.1				33.8			4,306
																										Total				$	478.0

Specialty Products - Other
$ in millions
		Cumulative Paid Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016
		Unaudited
2007		$	19.8		$	28.4		$	28.6		$	28.6		$	28.6		$	28.6		$	28.6		$	28.6		$	28.6			$	28.6
2008		—			21.3			31.1			31.2			31.2			31.2			31.2			31.2			31.2				31.2
2009		—			—			21.6			30.8			30.8			30.9			30.9			30.9			30.9				30.9
2010		—			—			—			22.4			32.4			32.5			32.5			32.5			32.5				32.5
2011		—			—			—			—			25.2			35.2			35.4			35.4			35.4				35.4
2012		—			—			—			—			—			26.1			36.8			36.9			36.9				37.0
2013		—			—			—			—			—			—			27.4			39.0			39.2				39.2
2014		—			—			—			—			—			—			—			46.2			88.5				90.3
2015		—			—			—			—			—			—			—			—			41.7				70.6
2016		—			—			—			—			—			—			—			—			—				44.2
																										Total				$	439.9
All outstanding liabilities before 2007, net of reinsurance																														.1
Liabilities for loss and allocated LAE, net of reinsurance																														$	38.2

Specialty Products - Property
$ in millions
		Incurred Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,																																As of December 31, 2016
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016				Total IBNR plus expected development on reported claims			Cumulative number of reported claims
		Unaudited
2007		$	12.0		$	11.1		$	9.1		$	7.6		$	7.6		$	7.7		$	8.7		$	8.6		$	8.6			$	8.6			$	—		250
2008		—			31.3			29.2			25.4			25.6			26.6			26.8			26.8			26.8				26.8				—			3,466
2009		—			—			55.2			52.1			52.9			53.3			52.9			52.6			52.5				51.6				—			8,768
2010		—			—			—			51.0			49.5			55.6			56.7			55.9			55.8				55.8				—			10,170
2011		—			—			—			—			58.7			59.8			60.2			60.6			60.8				60.7				.2			11,121
2012		—			—			—			—			—			79.9			86.7			92.9			92.2				92.2				.2			12,405
2013		—			—			—			—			—			—			36.4			27.6			27.6				27.7				.3			5,267
2014		—			—			—			—			—			—			—			37.5			32.1				31.6				.4			1,227
2015		—			—			—			—			—			—			—			—			28.3				25.7				1.1			2,186
2016		—			—			—			—			—			—			—			—							24.5				5.2			1,825
																										Total				$	405.2

Specialty Products - Property
$ in millions
		Cumulative Paid Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016
		Unaudited
2007		$	1.8		$	3.7		$	6.8		$	7.0		$	7.0		$	7.0		$	8.7		$	8.6		$	8.6			$	8.6
2008		—			15.5			23.5			25.2			25.5			26.0			26.8			26.8			26.8				26.8
2009		—			—			41.5			47.3			51.2			51.9			51.9			51.6			51.6				51.6
2010		—			—			—			43.1			47.9			53.3			55.2			55.7			55.7				55.7
2011		—			—			—			—			51.8			59.0			59.7			60.1			60.4				60.5
2012		—			—			—			—			—			58.8			72.5			78.3			79.0				78.8
2013		—			—			—			—			—			—			24.3			26.9			27.1				27.4
2014		—			—			—			—			—			—			—			19.8			28.2				31.2
2015		—			—			—			—			—			—			—			—			15.0				22.1
2016		—			—			—			—			—			—			—			—			—				12.3
																										Total				375.0
All outstanding liabilities before 2007, net of reinsurance																														—
Liabilities for loss and allocated LAE, net of reinsurance																														$	30.2

Specialty Industries - Casualty
$ in millions
		Incurred Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,																																As of December 31, 2016
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016				Total IBNR plus expected development on reported claims			Cumulative number of reported claims
		Unaudited
2007		$	24.9		$	24.3		$	21.7		$	34.0		$	34.9		$	35.1		$	35.1		$	36.0		$	37.1			$	36.9			$	.3		1,770
2008		—			26.3			26.2			30.4			26.4			25.8			25.2			23.7			22.2				22.1				.5			1,835
2009		—			—			51.0			51.1			51.5			49.6			54.8			53.6			51.6				51.0				1.0			2,982
2010		—			—			—			80.8			72.4			69.3			69.4			73.3			75.5				77.2				3.5			4,791
2011		—			—			—			—			88.1			87.5			90.2			100.5			111.8				112.2				3.8			5,254
2012		—			—			—			—			—			118.8			103.4			102.0			101.8				98.8				7.9			6,298
2013		—			—			—			—			—			—			121.9			131.5			133.6				138.2				18.0			7,107
2014		—			—			—			—			—			—			—			135.6			127.4				124.2				35.7			7,633
2015		—			—			—			—			—			—			—			—			146.3				127.7				61.8			7,315
2016		—			—			—			—			—			—			—			—			—				129.9				98.4			5,701
																										Total				$	918.2

Specialty Industries - Casualty
$ in millions
		Cumulative Paid Loss and Allocated LAE, Net of Reinsurance
		For the Years Ended December 31,
Accident Year		2007			2008			2009			2010			2011			2012			2013			2014			2015				2016
		Unaudited
2007		$	2.8		$	5.5		$	7.9		$	13.8		$	27.9		$	29.9		$	32.4		$	32.9		$	34.3			$	35.9
2008		—			3.2			6.9			11.5			14.2			17.3			19.9			21.2			20.8				20.9
2009		—			—			5.1			16.6			25.0			34.5			42.9			46.3			46.3				47.4
2010		—			—			—			8.7			21.1			37.3			51.4			57.5			65.3				68.9
2011		—			—			—			—			11.1			34.2			53.7			69.8			88.9				96.4
2012		—			—			—			—			—			12.9			31.9			50.6			67.8				79.7
2013		—			—			—			—			—			—			18.6			45.5			72.7				96.6
2014		—			—			—			—			—			—			—			16.6			40.2				61.4
2015		—			—			—			—			—			—			—			—			13.6				39.3
2016		—			—			—			—			—			—			—			—			—				11.8
																										Total				$	558.3
All outstanding liabilities before 2007, net of reinsurance																														.1
Liabilities for loss and allocated LAE, net of reinsurance																														$	360.0

Average Annual Percentage Payout of Incurred Losses and Allocated LAE by Age, Net of Reinsurance

Specialty Products - Property
	Average Annual Percentage Payout of Incurred Losses and Allocated LAE by Age, Net of Reinsurance
	Unaudited
Years	1	2	3	4	5	6	7	8	9	10
	70.1%	14.6%	5.9%	1.1%	0.3%	0.2%	0.4%	—%	—%	—%

Specialty Products - Other
	Average Annual Percentage Payout of Incurred Losses and Allocated LAE by Age, Net of Reinsurance
	Unaudited
Years	1	2	3	4	5	6	7	8	9	10
	61.9%	29.5%	0.6%	—%	—%	—%	—%	—%	—%	—%

Specialty Industries - Other
	Average Annual Percentage Payout of Incurred Losses and Allocated LAE by Age, Net of Reinsurance
	Unaudited
Years	1	2	3	4	5	6	7	8	9	10
	30.4%	37.0%	10.8%	3.3%	1.1%	0.9%	0.2%	—%	0.1%	—%

Specialty Industries - Property
	Average Annual Percentage Payout of Incurred Losses and Allocated LAE by Age, Net of Reinsurance
	Unaudited
Years	1	2	3	4	5	6	7	8	9	10
	47.4%	27.3%	9.9%	4.1%	1.8%	0.7%	0.2%	0.1%	—%	—%

Specialty Industries - Casualty
	Average Annual Percentage Payout of Incurred Losses and Allocated LAE by Age, Net of Reinsurance
	Unaudited
Years	1	2	3	4	5	6	7	8	9	10
	11.4%	16.2%	12.9%	9.7%	6.8%	2.5%	0.8%	0.1%	0.2%	0.2%

Specialty Products - Casualty
	Average Annual Percentage Payout of Incurred Losses and Allocated LAE by Age, Net of Reinsurance
	Unaudited
Years	1	2	3	4	5	6	7	8	9	10
	11.3%	24.0%	17.8%	9.6%	4.7%	2.2%	0.9%	0.7%	0.2%	—%

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Tabular disclosure of the activity in the reserve for settling insured claims and expenses incurred in the claims settlement process for the period. The estimated liability includes the amount of money that will be required for future payments of (a) claims that have been reported to the insurer, (b) claims related to insured events that have occurred but that have not been reported to the insurer as of the date the liability is estimated, and (c) claim adjustment expenses. Claim adjustment expenses include costs incurred in the claim settlement process such as legal fees; outside adjuster fees; and costs to record, process, and adjust claims.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
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Tabular disclosure of undiscounted information about claims development by accident year for short-duration insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
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Tabular disclosure of average annual percentage payout of incurred claims by age, after reinsurance, for short-duration insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 50
-Paragraph 4G
-URI http://asc.fasb.org/extlink&oid=65670685&loc=SL65671329-158438

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[Table Text Block] for Loss and LAE Reserve and Net Loss and LAE Development [Table]

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