Reserve For Losses And Loss Expenses (Tables)

12 Months Ended

Dec. 31, 2016

Insurance Loss Reserves [Abstract]

Components of liabilty for unpaid losses and loss expenses

The reserve for losses and loss expenses consists of the following:

	December 31,
	2016		2015
Outstanding loss reserves	$	1,807.5	$	1,678.5
Reserves for losses incurred but not reported	4,831.7		4,777.7
Reserve for losses and loss expenses	$	6,639.2	$	6,456.2

Reconciliation of beginning and ending liability for unpaid losses and loss expenses

The table below is a reconciliation of the beginning and ending liability for unpaid losses and loss expenses. Losses incurred and paid are reflected net of reinsurance recoverables.

	Year Ended December 31,
	2016			2015			2014
Gross liability at beginning of year	$	6,456.2		$	5,881.2		$	5,766.5
Reinsurance recoverable at beginning of year	(1,480.0		)	(1,340.3		)	(1,234.5		)
Net liability at beginning of year	4,976.2			4,540.9			4,532.0
Acquisition of net reserves for losses and loss expenses	—			259.3			—
Net losses incurred related to:
Current year	1,600.1			1,667.9			1,411.8
Prior years	(98.3		)	(81.6		)	(212.6		)
Total incurred	1,501.8			1,586.3			1,199.2
Net paid losses related to:
Current year	208.4			186.0			171.8
Prior years	1,238.6			1,201.6			1,001.5
Total paid	1,447.0			1,387.6			1,173.3
Foreign exchange revaluation and other	(16.8		)	(22.7		)	(17.0		)
Net liability at end of year	5,014.2			4,976.2			4,540.9
Reinsurance recoverable at end of year	1,625.0			1,480.0			1,340.3
Gross liability at end of year	$	6,639.2		$	6,456.2		$	5,881.2

(Incurred and Paid Loss Development Triangles)

North American Insurance Segment

Casualty
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	133.8	$	156.8	$	158.4	$	151.5	$	149.3	$	143.5	$	127.3	$	23.6	277
2011			120.7		140.7		145.1		143.0		136.7		144.2		36.8		347
2012					144.4		147.9		150.7		166.3		188.5		42.7		388
2013							184.0		192.4		208.9		237.4		90.3		638
2014									220.2		222.4		232.4		94.7		763
2015											288.0		279.1		214.8		820
2016													268.4		244.3		614
													$	1,477.3
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	0.6	$	28.4	$	65.9	$	72.8	$	83.0	$	87.4	$	96.8
2011			2.1		11.2		32.8		53.0		79.0		91.8
2012					6.5		25.9		53.2		85.4		114.0
2013							9.7		38.6		70.2		103.6
2014									8.5		58.3		103.9
2015											11.0		34.2
2016													10.0
													$	554.4
All outstanding liabilities before 2010, net of reinsurance													$	157.0
Liability for losses and loss expenses, net of reinsurance													$	1,079.9

Professional liability
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	189.4	$	196.5	$	190.5	$	178.0	$	169.3	$	154.8	$	152.3	$	23.1	334
2011			182.5		206.4		228.7		235.4		214.4		210.7		24.4		474
2012					193.5		266.2		274.0		271.1		265.6		46.9		530
2013							220.9		226.8		225.8		240.4		77.3		534
2014									213.0		233.7		235.7		79.2		378
2015											254.2		258.9		165.7		269
2016													256.0		234.1		127
													$	1,619.5
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	7.9	$	36.5	$	57.0	$	78.1	$	91.3	$	97.5	$	118.2
2011			13.6		56.1		102.6		124.7		152.7		179.5
2012					15.8		62.5		98.0		146.5		181.1
2013							9.6		50.0		95.8		142.8
2014									11.7		69.8		125.6
2015											9.0		61.0
2016													9.5
													$	817.6
All outstanding liabilities before 2010, net of reinsurance													$	89.7
Liability for losses and loss expenses, net of reinsurance													$	891.6

Property
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR			Cumulative Reported Claims
2010	$	66.9	$	54.0	$	49.6	$	47.7	$	48.6	$	48.8	$	48.8	$	0.7		330
2011			124.3		121.8		115.0		111.4		110.2		107.9		(0.1		)	448
2012					157.7		146.9		140.5		136.9		136.3		0.3			599
2013							81.6		75.3		69.8		68.9		0.1			923
2014									97.0		96.0		88.9		0.3			1,344
2015											110.7		114.4		3.3			1,448
2016													101.3		11.8			1,502
													$	666.4
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	16.4	$	34.2	$	40.9	$	45.7	$	47.4	$	47.9	$	48.1
2011			24.6		69.8		98.6		106.2		107.4		108.1
2012					20.5		98.0		127.8		134.7		135.0
2013							25.4		56.3		64.6		67.8
2014									32.3		73.1		83.8
2015											51.6		98.5
2016													46.7
													$	587.9
All outstanding liabilities before 2010, net of reinsurance													$	0.5
Liability for losses and loss expenses, net of reinsurance													$	79.0

Programs
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	70.7	$	72.5	$	86.4	$	80.8	$	78.8	$	75.5	$	75.0	$	2.6	479
2011			54.0		61.9		62.6		58.1		52.5		53.5		4.4		446
2012					56.7		60.5		62.4		59.6		58.9		5.7		496
2013							64.9		62.0		59.7		56.2		14.5		871
2014									74.9		73.9		70.0		28.8		1,201
2015											86.8		86.2		43.5		1,266
2016													113.6		72.3		1,281
													$	513.4
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	2.9	$	17.9	$	42.4	$	52.3	$	59.9	$	63.4	$	66.3
2011			3.8		15.2		26.7		34.7		41.3		45.3
2012					3.8		17.6		29.6		38.3		44.5
2013							5.7		15.8		24.4		33.0
2014									6.4		16.9		27.5
2015											9.3		26.3
2016													14.1
													$	257.0
All outstanding liabilities before 2010, net of reinsurance													$	9.4
Liability for losses and loss expenses, net of reinsurance													$	265.8

Healthcare
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	78.5	$	76.4	$	79.3	$	79.8	$	64.2	$	63.4	$	62.8	$	6.8	156
2011			85.9		87.1		94.5		108.1		113.6		113.3		4.5		248
2012					87.9		91.4		99.4		113.7		113.7		8.5		260
2013							85.4		111.2		123.9		123.9		18.8		227
2014									84.4		92.5		92.5		46.4		150
2015											76.8		76.8		58.0		85
2016													51.1		47.6		17
													$	634.1
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	1.2	$	6.4	$	17.1	$	28.9	$	39.8	$	48.5	$	51.9
2011			0.5		10.9		42.5		69.6		84.0		99.9
2012					1.3		15.1		34.3		54.8		77.5
2013							2.6		12.6		56.9		84.6
2014									1.0		9.0		26.5
2015											0.6		8.5
2016													0.9
													$	349.7
All outstanding liabilities before 2010, net of reinsurance													$	16.8
Liability for losses and loss expenses, net of reinsurance													$	301.2

Other specialty
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	0.9	$	0.9	$	0.9	$	0.6	$	0.5	$	0.3	$	0.4	$	—	9
2011			16.5		18.9		18.3		18.7		18.7		18.7		0.7		16
2012					21.2		21.2		22.5		21.3		21.2		2.3		19
2013							16.6		16.6		16.6		16.6		10.6		73
2014									30.6		33.6		34.3		12.1		331
2015											47.4		48.2		30.6		352
2016													70.1		62.4		520
													$	209.6
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	—	$	—	$	—	$	0.1	$	0.1	$	0.1	$	0.4
2011			4.0		11.2		14.5		15.1		15.9		16.7
2012					0.5		10.2		14.7		17.5		17.9
2013							0.8		2.3		3.2		4.4
2014									5.2		13.0		18.6
2015											4.1		13.4
2016													4.2
													$	75.6
All outstanding liabilities before 2010, net of reinsurance													$	—
Liability for losses and loss expenses, net of reinsurance													$	134.0

Global Markets Insurance Segment:

Casualty - Excluding RSA acquired reserves
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	14.2	$	14.2	$	14.2	$	13.9	$	10.3	$	5.8	$	4.2	$	4.1	1
2011			9.8		9.6		15.4		16.5		15.8		15.5		5.4		10
2012					11.0		11.6		11.3		10.5		7.6		5.8		16
2013							9.3		9.3		8.1		7.3		6.5		25
2014									9.0		11.8		11.9		6.0		66
2015											16.6		19.5		6.5		111
2016													15.9		11.4		233
													$	81.9
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	—	$	—	$	—	$	0.1	$	0.1	$	0.1	$	0.1
2011			—		0.2		0.3		10.1		10.1		10.1
2012					—		0.6		0.9		1.0		1.6
2013							—		0.4		0.4		0.4
2014									0.4		0.7		1.1
2015											1.1		4.0
2016													0.4
													$	17.7
All outstanding liabilities before 2010, net of reinsurance													$	24.1
Liability for losses and loss expenses, net of reinsurance													$	88.3

Casualty - RSA acquired reserves
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	—	$	—	$	—	$	—	$	—	$	3.2	$	2.7	$	0.5	130
2011			—		—		—		—		7.2		6.2		0.1		337
2012					—		—		—		19.3		17.9		0.4		496
2013							—		—		53.6		43.2		3.1		1,302
2014									—		99.2		68.7		5.4		3,618
2015											98.3		78.0		15.4		9,095
2016													60.9		22.0		8,506
													$	277.6
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	—	$	—	$	—	$	—	$	—	$	1.0	$	1.5
2011			—		—		—		—		2.7		4.7
2012					—		—		—		8.2		14.2
2013							—		—		13.2		28.2
2014									—		16.6		37.1
2015											12.0		31.1
2016													13.4
													$	130.1
All outstanding liabilities before 2010, net of reinsurance													$	1.1
Liability for losses and loss expenses, net of reinsurance													$	148.6

Professional liability - Excluding RSA acquired reserves
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	32.6	$	32.6	$	32.5	$	30.3	$	20.0	$	13.8	$	14.7	$	5.7	15
2011			32.4		29.8		27.8		24.3		20.7		19.2		7.3		21
2012					32.4		30.7		37.9		39.2		37.3		10.7		34
2013							33.9		33.4		30.4		28.5		20.0		92
2014									39.6		39.2		40.5		29.4		125
2015											57.3		60.3		48.9		147
2016													53.5		48.9		150
													$	254.0
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	—	$	—	$	0.1	$	0.5	$	2.6	$	3.1	$	8.6
2011			0.1		0.5		6.7		8.4		8.6		8.6
2012					0.2		1.6		10.5		13.6		21.3
2013							0.1		0.9		2.4		3.5
2014									0.5		2.6		4.8
2015											1.3		5.4
2016													1.9
													$	54.3
All outstanding liabilities before 2010, net of reinsurance													$	46.5
Liability for losses and loss expenses, net of reinsurance													$	246.2

Professional liability - RSA acquired reserves
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	—	$	—	$	—	$	—	$	—	$	0.8	$	0.9	$	0.1	11
2011			—		—		—		—		1.5		1.0		—		12
2012					—		—		—		0.4		0.2		—		9
2013							—		—		0.8		1.9		0.2		25
2014									—		2.1		1.5		0.3		48
2015											3.2		2.6		1.8		74
2016													1.0		1.0		32
													$	9.1
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	—	$	—	$	—	$	—	$	—	$	0.6	$	0.7
2011			—		—		—		—		—		0.5
2012					—		—		—		0.1		0.1
2013							—		—		0.2		0.4
2014									—		0.2		0.3
2015											—		0.1
2016													0.1
													$	2.3
All outstanding liabilities before 2010, net of reinsurance													$	—
Liability for losses and loss expenses, net of reinsurance													$	6.8

Property - Excluding RSA acquired reserves
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	87.9	$	102.3	$	97.5	$	96.6	$	95.7	$	96.5	$	93.6	$	0.1	249
2011			66.2		64.2		58.5		54.6		54.5		54.9		0.2		214
2012					25.2		21.9		18.6		17.3		18.2		0.8		161
2013							26.0		18.6		14.4		14.4		0.2		108
2014									29.0		23.3		21.1		0.6		164
2015											22.8		25.1		1.8		223
2016													29.3		12.3		282
													$	256.6
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	47.8	$	75.0	$	84.1	$	90.5	$	92.1	$	92.5	$	92.9
2011			10.6		28.4		43.3		52.2		52.8		53.6
2012					3.5		9.3		11.5		15.1		17.3
2013							4.0		9.0		12.5		12.9
2014									6.7		12.3		15.9
2015											3.7		15.4
2016													3.0
													$	211.1
All outstanding liabilities before 2010, net of reinsurance													$	2.3
Liability for losses and loss expenses, net of reinsurance													$	47.8

Property - RSA acquired reserves
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
																As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016			Total IBNR		Cumulative Reported Claims
2010	$	—	$	—	$	—	$	—	$	—	$	—	$	0.1		$	—	54
2011			—		—		—		—		0.9		0.5			—		122
2012					—		—		—		1.7		1.4			—		353
2013							—		—		4.2		4.5			—		758
2014									—		14.0		14.3			0.5		1,332
2015											22.1		12.0			0.6		1,988
2016													20.6			7.4		1,190
													$	53.3
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	—	$	—	$	—	$	—	$	—	$	0.1	$	—
2011			—		—		—		—		0.2		0.6
2012					—		—		—		0.5		1.3
2013							—		—		1.6		3.1
2014									—		6.4		9.7
2015											2.8		8.1
2016													1.9
													$	24.8
All outstanding liabilities before 2010, net of reinsurance													$	(3.5	)
Liability for losses and loss expenses, net of reinsurance													$	25.0

Other specialty - Excluding RSA acquired reserves
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	0.1	$	0.1	$	0.1	$	0.1	$	—	$	—	$	—	$	—	—
2011			1.0		1.0		1.0		—		—		—		—		3
2012					4.3		4.3		1.7		1.6		1.7		—		5
2013							7.2		16.0		20.2		19.7		1.1		110
2014									31.9		41.4		52.1		3.2		750
2015											44.0		46.4		8.6		1,086
2016													55.1		19.1		1,049
													$	174.9
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	—	$	—	$	—	$	—	$	—	$	—	$	—
2011			—		—		—		—		—		—
2012					—		0.1		1.4		1.6		1.6
2013							0.2		4.8		16.6		18.4
2014									8.9		27.0		32.9
2015											12.7		29.3
2016													24.7
													$	107.0
All outstanding liabilities before 2010, net of reinsurance													$	—
Liability for losses and loss expenses, net of reinsurance													$	67.9

Other specialty - RSA acquired reserves
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR			Cumulative Reported Claims
2010	$	—	$	—	$	—	$	—	$	—	$	1.1	$	1.1	$	—		115
2011			—		—		—		—		1.3		2.6		—			239
2012					—		—		—		2.4		2.6		(0.1		)	411
2013							—		—		7.0		7.0		0.2			857
2014									—		20.6		21.8		(0.9		)	2,808
2015											39.0		41.5		0.9			14,366
2016													31.3		7.9			15,908
													$	107.8
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	—	$	—	$	—	$	—	$	—	$	0.1	$	0.3
2011			—		—		—		—		0.3		0.8
2012					—		—		—		0.4		1.4
2013							—		—		2.1		3.2
2014									—		5.5		10.0
2015											7.2		19.1
2016													6.7
													$	41.5
All outstanding liabilities before 2010, net of reinsurance													$	0.4
Liability for losses and loss expenses, net of reinsurance													$	66.7

Reinsurance Segment:

Property
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	80.3	$	78.7	$	73.0	$	68.6	$	68.0	$	67.9	$	67.0	$	0.6	n/a
2011			219.8		223.9		207.2		199.4		197.8		199.2		1.2		n/a
2012					190.9		143.0		131.2		126.9		124.5		3.1		n/a
2013							176.3		143.7		133.6		123.1		2.9		n/a
2014									196.5		165.0		152.8		5.2		n/a
2015											202.1		174.4		26.3		n/a
2016													180.4		74.4		n/a
													$	1,021.3
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	11.1	$	38.2	$	50.2	$	57.6	$	63.2	$	64.8	$	65.2
2011			53.4		116.6		162.9		182.1		190.5		193.9
2012					38.5		87.8		105.8		111.7		114.6
2013							29.7		84.8		110.6		115.7
2014									57.5		112.8		131.0
2015											53.9		104.2
2016													52.8
													$	777.5
All outstanding liabilities before 2010, net of reinsurance													$	1.9
Liability for losses and loss expenses, net of reinsurance													$	245.7

Casualty
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	200.0	$	222.1	$	225.9	$	223.2	$	213.2	$	197.9	$	196.0	$	48.4	n/a
2011			165.2		184.6		189.4		192.7		185.6		180.5		51.8		n/a
2012					190.5		214.7		216.9		223.8		231.2		68.9		n/a
2013							177.4		192.5		198.6		214.9		92.8		n/a
2014									167.2		179.5		182.0		120.0		n/a
2015											159.2		157.5		123.6		n/a
2016													130.2		120.5		n/a
													$	1,292.3
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	2.6	$	32.2	$	58.6	$	76.3	$	97.9	$	114.5	$	126.8
2011			8.4		26.9		49.0		71.3		93.2		105.0
2012					12.6		39.2		57.3		92.5		127.5
2013							7.8		22.4		60.2		81.4
2014									1.7		12.5		31.0
2015											1.5		14.5
2016													1.8
													$	487.9
All outstanding liabilities before 2010, net of reinsurance													$	225.9
Liability for losses and loss expenses, net of reinsurance													$	1,030.3

Specialty
Incurred Claims and Loss Adjustment Expenses, Net of Reinsurance
															As of December 31, 2016
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016		Total IBNR		Cumulative Reported Claims
2010	$	11.3	$	7.7	$	9.0	$	8.8	$	8.6	$	8.3	$	8.1	$	0.4	n/a
2011			30.0		26.9		21.9		22.7		22.1		21.4		1.5		n/a
2012					123.1		132.0		138.3		137.2		136.5		4.5		n/a
2013							111.6		106.7		100.3		102.0		4.2		n/a
2014									121.0		124.8		118.4		6.2		n/a
2015											130.0		128.0		23.9		n/a
2016													118.4		101.6		n/a
													$	632.8
Cumulative Paid Claims and Loss Adjustment Expenses, Net of Reinsurance
Accident Year	Unaudited 2010		Unaudited 2011		Unaudited 2012		Unaudited 2013		Unaudited 2014		Unaudited 2015		2016
2010	$	2.1	$	4.1	$	6.1	$	6.5	$	7.0	$	7.1	$	7.3
2011			3.2		12.7		16.3		17.5		18.4		19.0
2012					24.5		108.0		121.8		125.5		127.9
2013							3.3		75.7		92.0		93.3
2014									14.8		102.8		107.7
2015											7.2		95.3
2016													9.8
													$	460.4
All outstanding liabilities before 2010, net of reinsurance													$	3.3
Liability for losses and loss expenses, net of reinsurance													$	175.7

(Reconciliation of incurred and paid loss development triangles to the reserve for losses and loss expenses)

The following table reconciles the net reserve for losses and loss expenses derived from the incurred and paid loss development triangles to the reserve for losses and loss expenses in the consolidated balance sheet as of December 31, 2016

		December 31, 2016
Net reserve for losses and loss expenses per the loss development triangles:
North American Insurance:	Casualty	$	1,079.9
	Professional liability	891.6
	Property	79.0
	Programs	265.8
	Healthcare	301.2
	Other specialty	134.0
Global Markets Insurance:	Casualty	88.3
	Casualty - RSA acquired reserves	148.6
	Professional liability	246.2
	Professional liability - RSA acquired reserves	6.8
	Property	47.8
	Property - RSA acquired reserves	25.0
	Other specialty	67.9
	Other specialty - RSA acquired reserves	66.7
Reinsurance:	Property	245.7
	Casualty	1,030.3
	Specialty	175.7
Total net reserves for losses and loss expenses per the loss development triangles:		$	4,900.4
Reinsurance recoverable for each loss development triangle:
North American Insurance:	Casualty	$	605.9
	Professional liability	352.7
	Property	74.5
	Programs	83.8
	Healthcare	135.6
	Other Specialty	55.6
Global Markets Insurance:	Casualty	62.9
	Casualty - RSA acquired reserves	5.0
	Professional liability	111.9
	Professional liability - RSA acquired reserves	1.0
	Property	4.0
	Property - RSA acquired reserves	15.3
	Other specialty	30.7
	Other specialty - RSA acquired reserves	31.5
Reinsurance:	Property	3.8
	Casualty	—
	Specialty	—
Total reinsurance recoverables per the loss development triangles:		$	1,574.0
Total gross reserves for losses and loss expenses per the loss development triangles:		$	6,474.4
Other balances not included in the loss development triangles:
	Unallocated loss adjustment expenses	118.6
	Other reserves not included in the loss development triangles	43.6
	Fair value adjustment	6.0
	Currency translation adjustment	(3.0		)
	Other	(0.4		)
		164.8
Total gross reserves for losses and loss expenses		$	6,639.2

(Average historical claims duration)

Years	1		2		3		4		5		6		7
North American Insurance
Casualty	3	%	13	%	18	%	13	%	14	%	6	%	7	%
Professional liability	5	%	20	%	18	%	16	%	12	%	8	%	14	%
Property	34	%	44	%	17	%	7	%	2	%	1	%	—	%
Programs	9	%	20	%	21	%	15	%	11	%	6	%	4	%
Healthcare	1	%	9	%	23	%	21	%	17	%	14	%	5	%
Other specialty	8	%	23	%	13	%	9	%	3	%	3	%	66	%
Global Markets Insurance - excluding the RSA acquired reserves
Casualty	2	%	5	%	2	%	16	%	3	%	—	%	—	%
Professional liability	1	%	4	%	13	%	6	%	12	%	2	%	38	%
Property	25	%	34	%	18	%	11	%	5	%	1	%	—	%
Other specialty	18	%	23	%	37	%	7	%	—	%	—	%	—	%
Reinsurance
Property	28	%	37	%	18	%	7	%	5	%	2	%	1	%
Casualty	3	%	10	%	12	%	12	%	13	%	7	%	6	%
Specialty	13	%	57	%	14	%	4	%	4	%	2	%	3	%