Business Segments (Tables)

6 Months Ended

Jun. 30, 2016

Segment Reporting [Abstract]

Significant components of the Company's continuing operations and selected balance sheet items

The Company's results of operations and selected balance sheet items by segment are presented in the following tables.

Three months ended June 30, 2016	Specialty			Commercial			International			Life & Group Non-Core			Corporate & Other Non-Core
(In millions)																Eliminations			Total
Operating revenues
Net earned premiums	$	702		$	696		$	197		$	136		$	—		$	(1	)	$	1,730
Net investment income	133			164			13			188			4			—			502
Other revenues	89			8			—			3			—			—			100
Total operating revenues	924			868			210			327			4			(1		)	2,332
Claims, Benefits and Expenses
Net incurred claims and benefits	377			469			157			340			(8		)	—			1,335
Policyholders’ dividends	1			3			—			—			—			—			4
Amortization of deferred acquisition costs	148			117			40			—			—			—			305
Other insurance related expenses	73			130			37			31			—			(1		)	270
Other expenses	79			11			7			2			47			—			146
Total claims, benefits and expenses	678			730			241			373			39			(1		)	2,060
Operating income (loss) before income tax	246			138			(31		)	(46		)	(35		)	—			272
Income tax (expense) benefit on operating income (loss)	(82		)	(46		)	4			42			11			—			(71		)
Net operating income (loss)	164			92			(27		)	(4		)	(24		)	—			201
Net realized investment gains (losses)	4			8			4			(2		)	2			—			16
Income tax (expense) benefit on net realized investment gains (losses)	(2		)	(3		)	(1		)	(3		)	1			—			(8		)
Net realized investment gains (losses), after tax	2			5			3			(5		)	3			—			8
Net income (loss)	$	166		$	97		$	(24	)	$	(9	)	$	(21	)	$	—		$	209

Three months ended June 30, 2015	Specialty			Commercial			International			Life & Group Non-Core			Corporate & Other Non-Core
(In millions)																Eliminations			Total
Operating revenues
Net earned premiums	$	689		$	703		$	207		$	137		$	—		$	(1	)	$	1,735
Net investment income	134			169			13			179			5			—			500
Other revenues	81			9			(1		)	—			3			—			92
Total operating revenues	904			881			219			316			8			(1		)	2,327
Claims, Benefits and Expenses
Net incurred claims and benefits	416			507			114			344			85			—			1,466
Policyholders’ dividends	1			2			—			—			—			—			3
Amortization of deferred acquisition costs	146			117			45			6			—			—			314
Other insurance related expenses	66			130			31			34			(1		)	(1		)	259
Other expenses	69			5			(5		)	5			47			—			121
Total claims, benefits and expenses	698			761			185			389			131			(1		)	2,163
Operating income (loss) before income tax	206			120			34			(73		)	(123		)	—			164
Income tax (expense) benefit on operating income (loss)	(69		)	(42		)	(12		)	49			42			—			(32		)
Net operating income (loss)	137			78			22			(24		)	(81		)	—			132
Net realized investment gains (losses)	—			2			1			(5		)	2			—			—
Income tax (expense) benefit on net realized investment gains (losses)	—			2			(1		)	6			(1		)	—			6
Net realized investment gains (losses), after tax	—			4			—			1			1			—			6
Net income (loss)	$	137		$	82		$	22		$	(23	)	$	(80	)	$	—		$	138

Six months ended June 30, 2016	Specialty			Commercial			International			Life & Group Non-Core			Corporate & Other Non-Core
(In millions)																Eliminations			Total
Operating revenues
Net earned premiums	$	1,384		$	1,384		$	395		$	267		$	—		$	(1	)	$	3,429
Net investment income	240			290			25			375			7			—			937
Other revenues	176			14			1			3			3			—			197
Total operating revenues	1,800			1,688			421			645			10			(1		)	4,563
Claims, Benefits and Expenses
Net incurred claims and benefits	767			911			278			663			120			—			2,739
Policyholders’ dividends	2			6			—			—			—			—			8
Amortization of deferred acquisition costs	292			233			87			—			—			—			612
Other insurance related expenses	148			271			65			64			—			(1		)	547
Other expenses	154			16			16			5			101			—			292
Total claims, benefits and expenses	1,363			1,437			446			732			221			(1		)	4,198
Operating income (loss) before income tax	437			251			(25		)	(87		)	(211		)	—			365
Income tax (expense) benefit on operating income (loss)	(146		)	(85		)	4			81			73			—			(73		)
Net operating income (loss)	291			166			(21		)	(6		)	(138		)	—			292
Net realized investment gains (losses)	(7		)	(10		)	8			(5		)	(6		)	—			(20		)
Income tax (expense) benefit on net realized investment gains (losses)	2			3			(2		)	(3		)	3			—			3
Net realized investment gains (losses), after tax	(5		)	(7		)	6			(8		)	(3		)	—			(17		)
Net income (loss)	$	286		$	159		$	(15	)	$	(14	)	$	(141	)	$	—		$	275

June 30, 2016
(In millions)
Reinsurance receivables	$	856	$	621	$	128	$	492	$	2,623	$	—		$	4,720
Insurance receivables	1,005		1,120		274		11		3		—			2,413
Deferred acquisition costs	308		228		84		—		—		—			620
Goodwill	117		—		30		—		—		—			147
Insurance reserves
Claim and claim adjustment expenses	6,414		8,973		1,409		3,382		2,797		—			22,975
Unearned premiums	1,871		1,417		450		128		—		(1		)	3,865
Future policy benefits	—		—		—		11,140		—		—			11,140

Six months ended June 30, 2015	Specialty			Commercial			International			Life & Group Non-Core			Corporate & Other Non-Core
(In millions)																Eliminations			Total
Operating revenues
Net earned premiums	$	1,369		$	1,381		$	398		$	275		$	—		$	(1	)	$	3,422
Net investment income	289			373			27			358			11			—			1,058
Other revenues	159			18			(1		)	9			5			(1		)	189
Total operating revenues	1,817			1,772			424			642			16			(2		)	4,669
Claims, Benefits and Expenses
Net incurred claims and benefits	845			961			230			684			81			—			2,801
Policyholders’ dividends	2			5			—			—			—			—			7
Amortization of deferred acquisition costs	290			234			80			13			—			—			617
Other insurance related expenses	135			257			68			69			(1		)	(1		)	527
Other expenses	136			13			—			9			93			(1		)	250
Total claims, benefits and expenses	1,408			1,470			378			775			173			(2		)	4,202
Operating income (loss) before income tax	409			302			46			(133		)	(157		)	—			467
Income tax (expense) benefit on operating income (loss)	(137		)	(104		)	(15		)	92			54			—			(110		)
Net operating income (loss)	272			198			31			(41		)	(103		)	—			357
Net realized investment gains (losses)	4			6			2			(4		)	2			—			10
Income tax (expense) benefit on net realized investment gains (losses)	(1		)	(1		)	(1		)	8			(1		)	—			4
Net realized investment gains (losses), after tax	3			5			1			4			1			—			14
Net income (loss)	$	275		$	203		$	32		$	(37	)	$	(102	)	$	—		$	371

December 31, 2015
(In millions)
Reinsurance receivables	$	724	$	639	$	144	$	497	$	2,487	$	—	$	4,491
Insurance receivables	890		993		233		11		2		—		2,129
Deferred acquisition costs	307		213		78		—		—		—		598
Goodwill	117		—		33		—		—		—		150
Insurance reserves
Claim and claim adjustment expenses	6,269		9,183		1,347		3,220		2,644		—		22,663
Unearned premiums	1,839		1,297		415		120		—		—		3,671
Future policy benefits	—		—		—		10,152		—		—		10,152

Revenues by line of business

The following table presents revenue by line of business for each reportable segment. Revenues are comprised of Operating revenues and Net realized investment gains and losses.

Periods ended June 30	Three Months						Six Months
(In millions)	2016			2015			2016			2015
Specialty
Management & Professional Liability	$	659		$	674		$	1,277		$	1,371
Surety	133			125			260			245
Warranty & Alternative Risks	136			105			256			205
Specialty revenues	928			904			1,793			1,821
Commercial
Middle Market	434			412			835			821
Small Business	151			158			294			323
Other Commercial Insurance	291			313			549			634
Commercial revenues	876			883			1,678			1,778
International
Canada	51			54			101			109
CNA Europe	81			77			159			154
Hardy	82			89			169			163
International revenues	214			220			429			426
Life & Group Non-Core revenues	325			311			640			638
Corporate & Other Non-Core revenues	6			10			4			18
Eliminations	(1		)	(1		)	(1		)	(2		)
Total revenues	$	2,348		$	2,327		$	4,543		$	4,679