Reserves for unpaid losses and loss adjustment expenses (Tables)

12 Months Ended

Dec. 31, 2018

Reserves for unpaid losses and loss adjustment expenses

Summary of the loss and LAE reserve activities

(Millions)	2018		2017		2016
Gross beginning balance	$	1,898.5	$	1,620.1	$	1,644.4
Less beginning reinsurance recoverable on unpaid losses		(319.7)		(291.5)		(283.1)
Net loss and LAE reserve balance		1,578.8		1,328.6		1,361.3
Loss and LAE reserves acquired(1)		0.2		14.3		9.8
Losses and LAE incurred relating to:
Current year losses		907.3		811.8		583.0
Prior years losses		(7.3)		(0.6)		(63.7)
Total net incurred losses and LAE		900.0		811.2		519.3
Accretion of fair value adjustment to net loss and LAE reserves		0.1		0.1		0.5
Foreign currency translation adjustment to net loss and LAE reserves		(20.9)		36.8		(14.0)
Loss and LAE paid relating to:
Current year losses		251.4		222.8		207.6
Prior years losses		540.3		389.5		340.7
Total loss and LAE payments		791.7		612.3		548.3
Net ending balance		1,666.5		1,578.8		1,328.6
Plus ending reinsurance recoverable on unpaid losses		350.2		319.7		291.5
Gross ending balance	$	2,016.7	$	1,898.5	$	1,620.1

(1) Loss and LAE reserves acquired in 2018 relate to Sirius Group’s purchase of WRM America; 2017 relate to Sirius Group's purchase of IMG; 2016 relates to Sirius Group’s purchase of Mount Beacon.

Schedule of asbestos and environmental loss and loss adjustment expense reserve activity

	2018				2017				2016
(Millions)	Gross		Net		Gross		Net		Gross		Net
Asbestos:
Beginning balance	$	259.2	$	204.6	$	187.0	$	166.4	$	193.5	$	172.9
Incurred losses and LAE		(6.9)		(6.9)		96.9		59.0		15.3		13.6
Paid losses and LAE		(15.5)		(13.3)		(24.7)		(20.8)		(21.8)		(20.1)
Ending balance		236.8		184.4		259.2		204.6		187.0		166.4
Environmental:
Beginning balance		16.7		16.0		18.5		13.9		21.5		16.8
Incurred losses and LAE		4.0		4.0		2.9		6.1		0.4		0.4
Paid losses and LAE		(4.0)		(4.1)		(4.7)		(4.0)		(3.4)		(3.3)
Ending balance		16.7		15.9		16.7		16.0		18.5		13.9
Total asbestos and environmental:
Beginning balance		275.9		220.6		205.5		180.3		215.0		189.7
Incurred losses and LAE		(3.0)		(2.9)		99.8		65.1		15.7		14.0
Paid losses and LAE		(19.5)		(17.4)		(29.4)		(24.8)		(25.2)		(23.4)
Ending balance	$	253.4	$	200.3	$	275.9	$	220.6	$	205.5	$	180.3

Schedule of net loss reserves by type

(Millions)	2018		2017
Case Reserve	$	924.5	$	833.9
IBNR Reserve		742.0		744.9
Loss and loss adjustment expense reserves, net of reinsurance	$	1,666.5	$	1,578.8

Schedule of reconciliation of liabilities for unpaid loss and loss adjustment expense

(Millions)	As of
Liabilities for unpaid loss and LAE, net of reinsurance	December 31, 2018
Unpaid and allocated LAE reserves, net of reinsurance
Other Property	$	450.8
Property Catastrophe Excess		245.7
Agriculture		40.9
Global Accident & Health		148.2
Aviation & Space		86.6
Trade credit		42.1
Environmental		0.4
Marine		58.9
Surety		4.5
Contingency		13.7
Casualty		65.4
Runoff & Other		473.7
Total unpaid and allocated LAE reserves, net of reinsurance		1,631.0
Unallocated LAE		35.5
Total unpaid loss and LAE reserves, net of reinsurance		1,666.5
Reinsurance recoverable on unpaid losses
Other Property		104.6
Property Catastrophe Excess		53.4
Agriculture		0.5
Global Accident & Health		45.0
Aviation & Space		18.6
Trade credit		10.9
Environmental		0.4
Marine		8.9
Surety		0.5
Contingency		4.9
Casualty		—
Runoff & Other		102.5
Total reinsurance recoverable on unpaid losses		350.2
Total unpaid loss and LAE reserves	$	2,016.7

Other property

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Other Property
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	118.3	108.7	98.3	94.2	94.1	93.1	95.8	94.6	92.8	93.1	0.2	NA
2010		156.1	153.4	144.7	145.3	140.4	139.5	138.8	137.2	136.9	1.4	NA
2011			163.5	150.9	141.7	133.7	131.8	132.5	132.8	131.6	0.1	NA
2012				163.4	150.0	144.8	140.4	135.7	133.7	133.6	1.6	NA
2013					131.2	127.4	116.6	113.0	112.7	112.2	(0.2)	NA
2014						115.0	117.6	115.1	115.3	113.0	1.0	NA
2015							141.2	133.3	135.6	135.5	0.6	NA
2016								196.2	215.2	219.8	0.6	NA
2017									334.2	370.9	46.5	NA
2018										273.1	97.4	NA
									Total	1,719.7

Other Property
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	22.6	59.5	78.7	85.4	89.4	90.5	90.2	90.9	90.9	90.1
2010		31.2	88.7	115.6	123.3	128.2	130.3	130.8	130.9	130.7
2011			26.9	79.5	103.3	116.2	122.3	124.7	127.4	127.1
2012				20.1	85.4	108.2	116.5	119.8	125.1	126.0
2013					27.5	72.0	96.3	102.7	106.0	106.6
2014						19.0	69.4	96.2	104.5	106.7
2015							31.0	93.7	115.2	124.9
2016								31.5	128.9	181.8
2017									58.8	223.5
2018										55.7
	Total									1,273.1
	All outstanding liabilities before 2009, net of reinsurance									4.2
	Liabilities for loss and allocated loss adjustment expenses, net of reinsurance									450.8

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Other Property
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	18.9	%	43.7	%	20.3	%	7.0	%	3.3	%	1.9	%	0.7	%	0.1	%	(0.1)	%	(0.9)	%

Property Catastrophe Excess

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Property Catastrophe Excess
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	48.2	49.0	47.7	46.7	45.9	45.1	44.8	44.9	44.9	44.9	(0.1)	NA
2010		136.1	133.6	131.0	130.2	122.8	121.9	121.4	120.7	121.3	(0.2)	NA
2011			148.6	153.2	142.7	121.0	117.4	116.6	116.6	116.6	0.1	NA
2012				70.8	59.2	52.6	50.6	51.1	46.3	46.5	0.5	NA
2013					71.6	78.2	75.3	74.7	73.9	73.6	0.0	NA
2014						56.2	57.7	54.9	54.9	54.8	0.3	NA
2015							27.6	29.6	27.2	26.2	0.0	NA
2016								50.6	48.2	42.8	1.8	NA
2017									106.3	124.4	20.3	NA
2018										157.3	60.6	NA
									Total	808.4

Property Catastrophe Excess
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	7.4	31.4	39.8	42.7	43.7	44.0	44.1	44.2	44.2	44.2
2010		49.8	90.0	102.5	107.6	111.1	113.6	117.5	117.5	118.0
2011			15.7	54.1	95.6	114.7	115.0	115.4	116.4	116.5
2012				2.8	26.2	35.8	40.5	41.5	43.3	44.5
2013					11.1	49.4	62.1	67.1	68.4	69.6
2014						9.4	36.1	42.3	47.9	49.5
2015							1.8	9.5	16.9	20.2
2016								10.4	25.7	31.9
2017									13.3	67.9
2018										2.8
									Total	565.1
	All outstanding liabilities before 2009, net of reinsurance									2.4
	Liabilities for loss and allocated loss adjustment expenses, net of reinsurance									245.7

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Property Catastrophe Excess
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	15.4	%	41.3	%	19.8	%	9.4	%	1.9	%	1.6	%	1.9	%	0.1	%	0.3	%	0.0	%

Agriculture

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Agriculture
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	11.9	10.0	8.7	8.7	8.5	8.6	8.6	8.6	8.6	8.6	—	NA
2010		12.8	10.8	10.9	10.7	10.7	10.7	10.7	10.7	10.7	(0.3)	NA
2011			21.5	21.6	21.7	21.7	21.7	21.7	21.7	21.7	—	NA
2012				41.0	45.8	45.8	45.7	46.9	46.9	46.9	(0.3)	NA
2013					9.1	10.8	12.9	13.0	12.8	12.8	(0.1)	NA
2014						9.6	8.1	8.4	8.8	8.8	0.2	NA
2015							7.0	9.2	9.5	9.5	—	NA
2016								33.5	30.8	29.9	0.2	NA
2017									50.5	47.0	2.5	NA
2018										39.4	33.8	NA
									Total	235.3

Agriculture
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	2.2	9.0	8.6	8.6	8.4	8.4	8.4	8.4	8.4	8.4
2010		0.5	10.7	10.8	10.6	10.6	10.7	10.7	10.7	10.7
2011			1.0	21.3	21.6	21.6	21.6	21.6	21.6	21.6
2012				19.0	45.4	45.7	45.6	46.9	46.9	46.9
2013					7.1	10.6	12.8	13.0	12.8	12.8
2014						6.5	8.1	8.8	8.8	8.9
2015							1.5	7.8	9.0	9.3
2016								10.1	28.1	29.6
2017									9.2	43.7
2018										2.6
									Total	194.5
	All outstanding liabilities before 2009, net of reinsurance									0.1
	Liabilities for loss and allocated loss adjustment expenses, net of reinsurance									40.9

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Agriculture
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	25.4	%	65.2	%	3.8	%	0.3	%	0.9	%	0.1	%	0.0	%	0.0	%	0.0	%	0.0	%

Global Accident & Health

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Global Accident & Health
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	86.6	84.3	81.3	79.2	78.9	79.0	78.9	79.0	79.0	79.0	—	NA
2010		118.4	125.4	122.9	122.1	121.8	121.8	121.8	121.7	121.6	(0.1)	NA
2011			161.3	176.7	172.3	171.7	171.7	171.6	171.5	171.4	0.1	NA
2012				163.4	160.1	147.8	147.1	146.8	146.7	146.6	(0.1)	NA
2013					125.6	123.2	118.7	118.2	117.6	116.8	—	NA
2014						131.1	132.2	130.6	130.6	129.6	0.2	NA
2015							153.5	149.5	146.1	144.8	0.7	NA
2016								176.7	190.9	186.7	5.0	NA
2017									176.4	168.3	13.2	NA
2018										202.8	52.3	NA
									Total	1,467.6

Global Accident & Health
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	27.7	67.7	76.1	77.7	78.5	78.6	78.7	78.8	78.8	78.8
2010		53.1	102.2	119.2	121.4	121.7	121.8	121.9	121.9	121.9
2011			71.2	139.2	166.1	171.1	171.5	171.6	171.6	171.6
2012				72.1	136.0	146.0	146.4	146.6	146.6	146.6
2013					54.4	103.6	114.1	115.5	116.7	116.2
2014						59.3	111.3	124.8	126.6	126.6
2015							75.7	130.3	141.8	143.4
2016								97.7	131.9	143.7
2017									95.7	146.0
2018										128.1
									Total	1,322.9
	All outstanding liabilities before 2009, net of reinsurance									3.5
	Liabilities for loss and allocated loss adjustment expenses, net of reinsurance									148.2

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Global Accident & Health
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	50.1	%	36.5	%	10.0	%	1.5	%	0.4	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%

Aviation & Space

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Aviation & Space
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	30.9	34.0	35.0	36.9	35.3	35.1	34.2	31.9	31.9	35.8	0.2	NA
2010		42.5	47.5	47.2	44.7	43.2	42.3	42.1	41.6	41.9	(0.5)	NA
2011			46.9	42.3	37.9	35.9	34.7	34.5	35.8	35.1	(0.2)	NA
2012				35.6	34.3	30.2	28.2	28.4	29.5	29.6	(0.2)	NA
2013					40.6	36.4	33.4	32.0	32.9	33.0	(0.1)	NA
2014						35.7	38.2	35.0	34.2	34.3	—	NA
2015							39.5	35.9	40.0	39.0	0.1	NA
2016								32.1	32.6	33.6	1.3	NA
2017									34.0	43.0	5.9	NA
2018										48.0	19.8	NA
									Total	373.3

Aviation & Space
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	7.9	16.6	21.4	26.4	27.6	28.5	31.7	31.2	32.0	35.9
2010		12.0	22.1	31.5	36.2	37.8	38.8	39.7	39.9	41.0
2011			10.2	22.7	28.6	31.5	32.7	34.1	34.8	34.7
2012				7.6	18.4	22.6	24.6	27.3	28.2	28.7
2013					13.5	19.9	24.0	26.7	28.5	29.2
2014						8.0	17.9	23.6	26.2	28.2
2015							10.5	21.1	27.1	33.5
2016								7.8	19.7	26.9
2017									9.0	23.7
2018										14.3
									Total	296.1
	All outstanding liabilities before 2009, net of reinsurance									9.4
	Liabilities for loss and allocated loss adjustment expenses, net of reinsurance									86.6

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Aviation & Space
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	27.0	%	29.4	%	16.8	%	10.5	%	5.0	%	2.8	%	3.7	%	(0.4)	%	2.4	%	10.9	%

Trade credit

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Trade credit
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	9.4	10.0	9.8	9.7	9.4	9.4	9.3	9.3	9.4	10.1	(0.1)	NA
2010		14.1	12.3	9.6	9.7	9.8	9.7	9.6	9.8	9.8	(0.3)	NA
2011			29.2	29.0	27.4	27.1	27.1	26.5	26.5	26.3	(0.2)	NA
2012				34.5	34.3	32.5	32.8	32.4	32.4	32.0	(0.3)	NA
2013					29.5	28.4	27.5	27.3	27.9	27.4	0.2	NA
2014						22.8	22.7	23.5	21.4	21.1	0.3	NA
2015							20.2	19.7	19.2	18.4	—	NA
2016								15.3	13.2	12.5	0.6	NA
2017									19.2	20.1	6.2	NA
2018										25.0	13.3	NA
									Total	202.7

Trade credit
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	3.4	7.7	8.5	8.8	8.9	9.0	9.1	9.1	9.1	10.0
2010		1.8	5.2	7.7	8.6	9.0	9.1	9.3	9.4	9.5
2011			6.5	17.5	23.5	24.8	25.7	26.0	25.7	25.8
2012				14.7	26.8	31.0	31.8	32.1	31.9	31.9
2013					11.6	19.8	22.8	24.0	24.4	24.5
2014						7.8	13.7	17.7	19.2	19.7
2015							4.5	12.2	15.7	16.6
2016								4.6	8.9	10.6
2017									3.0	8.8
2018										7.7
									Total	165.1
	All outstanding liabilities before 2009, net of reinsurance									4.5
	Liabilities for loss and allocated loss adjustment expenses, net of reinsurance									42.1

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Trade credit
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	32.3	%	35.3	%	16.4	%	4.6	%	2.1	%	0.4	%	0.0	%	0.3	%	1.0	%	8.2	%

Environmental

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Environmental
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	—	—	—	—	—	—	—	—	—	—	—	NA
2010		—	—	—	—	—	—	—	—	—	—	NA
2011			—	—	—	—	—	—	—	—	—	NA
2012				—	—	—	—	—	—	—	—	NA
2013					—	—	—	—	—	—	—	NA
2014						—	—	—	—	—	—	NA
2015							—	—	—	—	—	NA
2016								—	—	—	—	NA
2017									—	—	—	NA
2018										0.4	0.4	NA
									Total	0.4

Environmental
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	—	—	—	—	—	—	—	—	—	—
2010		—	—	—	—	—	—	—	—	—
2011			—	—	—	—	—	—	—	—
2012				—	—	—	—	—	—	—
2013					—	—	—	—	—	—
2014						—	—	—	—	—
2015							—	—	—	—
2016								—	—	—
2017									—	—
2018										—
									Total	—
					All outstanding liabilities before 2009, net of reinsurance					-
				Liabilities for loss and allocated loss adjustment expenses, net of reinsurance						0.4

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Environmental
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	0.9	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%

Marine

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Marine
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	27.9	25.8	24.8	24.4	24.0	24.1	24.2	23.8	24.1	24.0	(0.1)	NA
2010		32.3	35.1	32.7	32.4	33.3	32.9	31.6	31.3	31.1	—	NA
2011			36.6	32.8	30.6	31.1	32.1	31.5	31.6	31.5	(0.3)	NA
2012				27.3	33.4	36.1	37.5	37.9	36.8	36.3	1.2	NA
2013					23.3	20.5	19.3	18.3	18.1	18.0	—	NA
2014						23.3	21.6	19.5	18.2	17.9	—	NA
2015							29.5	31.5	29.2	28.8	0.1	NA
2016								28.3	29.2	28.4	1.1	NA
2017									37.5	35.1	6.3	NA
2018										23.3	9.3	NA
									Total	274.4

Marine
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	3.6	12.5	17.5	19.8	21.7	22.6	22.8	23.0	23.1	23.2
2010		5.0	12.2	17.1	19.5	21.3	26.7	27.5	28.5	28.7
2011			4.3	14.3	21.6	25.1	27.9	28.7	29.1	29.6
2012				5.2	14.7	24.2	27.1	29.1	31.0	32.6
2013					2.8	9.3	12.6	14.0	14.4	14.9
2014						4.1	10.3	13.7	15.0	15.8
2015							4.3	11.8	21.8	26.2
2016								6.8	17.5	21.4
2017									7.2	18.2
2018										5.3
									Total	215.9
	All outstanding liabilities before 2009, net of reinsurance									0.4
	Liabilities for loss and allocated loss adjustment expenses, net of reinsurance									58.9

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Marine
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	17.8	%	30.7	%	22.0	%	9.7	%	6.1	%	6.7	%	2.4	%	1.9	%	0.6	%	0.4	%

Surety

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Surety
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus  expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	—	—	—	—	—	—	—	—	—	—	—	NA
2010		0.1	0.1	0.2	0.4	0.4	0.3	0.3	0.1	0.1	0.1	NA
2011			0.3	0.5	0.6	0.6	0.4	0.4	0.2	0.2	0.2	NA
2012				0.5	0.6	0.6	0.4	0.4	0.3	0.3	0.3	NA
2013					1.0	0.9	0.7	0.5	0.7	0.9	0.7	NA
2014						1.2	1.1	1.0	1.1	1.3	1.1	NA
2015							1.0	1.2	1.0	0.8	0.8	NA
2016								—	—	0.5	0.4	NA
2017									0.6	0.4	0.3	NA
2018										0.9	0.9	NA
									Total	5.4

Surety
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	—	—	—	—	—	—	—	—	—	—
2010		—	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1
2011			0.1	0.2	0.2	0.2	0.2	0.2	0.2	0.2
2012				0.1	0.1	0.1	0.2	0.2	0.2	0.2
2013					0.1	0.1	0.2	0.3	0.5	0.6
2014						—	0.2	0.4	0.7	0.9
2015							0.1	0.2	0.3	0.4
2016								—	—	0.3
2017									—	—
2018										—
									Total	2.7
					All outstanding liabilities before 2009, net of reinsurance					1.8
				Liabilities for loss and allocated loss adjustment expenses, net of reinsurance						4.5

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Surety
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	8.5	%	9.4	%	17.7	%	15.2	%	14.6	%	11.6	%	3.5	%	0.9	%	1.7	%	0.0	%

Contingency

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Contingency
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	6.9	6.4	6.3	6.2	6.2	6.2	6.3	6.3	6.4	6.3	—	NA
2010		5.6	6.0	4.5	4.4	4.3	4.1	4.1	4.1	4.2	—	NA
2011			7.8	7.1	6.6	6.5	6.5	6.6	6.6	6.6	0.1	NA
2012				9.5	8.5	8.6	8.4	8.2	8.0	8.0	—	NA
2013					5.4	4.2	3.6	3.5	3.5	3.5	0.1	NA
2014						4.2	7.0	5.2	4.7	4.7	—	NA
2015							10.0	9.7	9.0	8.9	0.1	NA
2016								18.0	18.4	17.4	0.3	NA
2017									9.8	10.7	1.2	NA
2018										9.5	4.2	NA
									Total	79.8

Contingency
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	4.9	5.9	6.1	6.1	6.1	6.2	6.2	6.2	6.3	6.4
2010		1.9	3.4	3.5	3.5	3.9	4.1	4.1	4.1	4.1
2011			2.1	5.7	6.4	6.4	6.4	6.5	6.5	6.5
2012				5.2	7.1	8.4	8.4	8.2	8.0	8.0
2013					1.8	3.0	3.2	3.3	3.3	3.3
2014						1.6	3.7	4.4	4.5	4.5
2015							2.8	7.2	7.8	7.8
2016								12.1	15.6	16.4
2017									3.0	7.1
2018										1.9
									Total	66.0
	All outstanding liabilities before 2009, net of reinsurance									(0.1)
	Liabilities for loss and allocated loss adjustment expenses, net of reinsurance									13.7

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Contingency
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	46.7	%	33.0	%	8.0	%	0.4	%	0.8	%	0.0	%	0.4	%	0.5	%	1.3	%	0.6	%

Casualty

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Casualty
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	0.9	0.8	0.7	0.6	0.5	0.4	0.3	0.2	0.2	0.2	—	NA
2010		1.7	1.5	1.6	1.4	1.1	0.9	0.6	0.6	0.5	—	NA
2011			0.5	0.4	0.4	0.3	0.3	0.2	0.2	0.2	—	NA
2012				0.2	0.2	0.4	0.5	0.5	0.5	0.5	0.1	NA
2013					0.4	0.4	0.4	0.4	0.5	0.5	—	NA
2014						0.4	0.4	0.5	0.5	0.5	—	NA
2015							0.5	0.8	0.6	0.5	—	NA
2016								0.2	0.3	0.3	0.1	NA
2017									9.7	9.7	6.8	NA
2018										53.4	44.6	NA
									Total	66.3

Casualty
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	0.1	0.1	0.1	0.1	0.1	0.1	0.2	0.2	0.2	0.2
2010		—	—	0.1	0.1	0.2	0.4	0.3	0.4	0.4
2011			—	—	0.1	0.1	0.2	0.2	0.2	0.2
2012				—	—	0.1	0.2	0.1	0.2	0.2
2013					0.1	0.1	0.2	0.3	0.4	0.4
2014						0.1	0.2	0.4	0.4	0.4
2015							0.2	0.4	0.4	0.4
2016								—	0.1	0.1
2017									—	0.6
2018										2.0
									Total	4.9
	All outstanding liabilities before 2009, net of reinsurance									4.0
	Liabilities for loss and allocated loss adjustment expenses, net of reinsurance									65.4

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Casualty
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	3.7	%	9.7	%	14.4	%	10.8	%	8.1	%	11.9	%	3.4	%	3.4	%	3.0	%	2.8	%

Runoff & Other

Reserves for unpaid losses and loss adjustment expenses

Schedule of incurred losses and allocated loss adjustment expenses and cumulative paid losses and cumulative paid losses and allocated loss adjustment expenses, net of reinsurance

Runoff & Other
(Millions)
Incurred losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,										December 31, 2018
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017		Total IBNR liabilities plus expected	Cumulative
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018	development on reported claims	number of reported claims
2009	527.0	520.5	510.0	509.6	510.0	510.7	511.6	512.7	511.9	512.2	7.9	NA
2010		389.1	390.4	390.6	391.1	392.3	393.8	394.8	394.8	394.1	3.8	NA
2011			306.4	307.6	308.7	309.4	309.9	310.8	310.3	309.8	5.5	NA
2012				3.6	4.0	4.1	4.2	4.1	4.1	3.9	1.3	NA
2013					1.2	0.2	0.2	0.2	0.1	0.2	—	NA
2014						0.2	0.2	0.3	0.4	0.5	—	NA
2015							9.5	15.7	17.5	18.0	0.6	NA
2016								11.8	12.1	11.7	0.6	NA
2017									0.6	0.9	—	NA
2018										30.3	6.6	NA
									Total	1,281.6

Runoff & Other
(Millions)
Cumulative paid losses and allocated loss adjustment expenses, net of reinsurance
	Year ended December 31,
Accident	2009	2010	2011	2012	2013	2014	2015	2016	2017
Year	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	Unaudited	2018
2009	289.1	402.5	480.3	483.8	488.3	492.1	495.1	496.5	498.9	499.6
2010		225.7	370.4	372.7	376.8	380.0	383.6	385.5	387.4	388.1
2011			291.8	293.8	296.1	297.8	299.5	301.6	303.1	303.6
2012				0.3	1.3	1.8	2.2	2.4	2.4	2.5
2013					0.7	0.1	0.1	0.1	0.1	0.1
2014						—	—	0.1	0.2	0.3
2015							5.2	10.0	15.3	16.6
2016								6.2	10.1	10.9
2017									0.4	0.5
2018										7.9
									Total	1,230.1
	All outstanding liabilities before 2009, net of reinsurance									422.2
	Liabilities for loss and allocated loss adjustment expenses, net of reinsurance									473.7

Schedule of average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance

Runoff & Other
Average annual percentage payout of incurred losses and allocated LAE by age, net of reinsurance
Years	1		2		3		4		5		6		7		8		9		10
	64.5	%	21.5	%	7.1	%	0.9	%	0.8	%	0.8	%	0.5	%	0.3	%	0.3	%	0.1	%