Segments Information (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Revenues and Income Before Income Tax of Each Operating Segment

Revenues and income before income tax of each operating segment were as follows:

	Periods Ended June 30
	Second Quarter						Six Months
	2013			2012			2013			2012
	(in millions)
Revenues
Property and casualty insurance
Premiums earned
Personal insurance	$	1,050		$	1,014		$	2,081		$	2,004
Commercial insurance		1,299			1,305			2,607			2,591
Specialty insurance		645			664			1,311			1,336
Total insurance		2,994			2,983			5,999			5,931
Reinsurance assumed		1			—			—			3
		2,995			2,983			5,999			5,934
Investment income		361			381			724			772
Total property and casualty insurance		3,356			3,364			6,723			6,706
Corporate and other		16			12			28			24
Realized investment gains, net		179			47			317			103
Total revenues	$	3,551		$	3,423		$	7,068		$	6,833
Income (loss) before income tax
Property and casualty insurance
Underwriting
Personal insurance	$	75		$	58		$	225		$	219
Commercial insurance		124			18			319			69
Specialty insurance		96			65			191			131
Total insurance		295			141			735			419
Reinsurance assumed		6			8			10			19
		301			149			745			438
Increase in deferred policy acquisition costs		16			10			57			24
Underwriting income		317			159			802			462
Investment income		349			373			700			753
Other income		9			6			14			5
Total property and casualty insurance		675			538			1,516			1,220
Corporate and other		(58	)		(58	)		(121	)		(117	)
Realized investment gains, net		179			47			317			103
Total income before income tax	$	796		$	527		$	1,712		$	1,206