Segments Information (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Revenues, Income Before Income Tax and Assets of Each Operating Segment

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

	Years Ended December 31
	2014			2013			2012
	(in millions)
Revenues
Property and casualty insurance
Premiums earned
Personal insurance	$	4,418		$	4,214		$	4,024
Commercial insurance		5,281			5,237			5,144
Specialty insurance		2,628			2,618			2,666
Total insurance		12,327			12,069			11,834
Reinsurance assumed		1			(3	)		4
		12,328			12,066			11,838
Investment income		1,368			1,436			1,518
Total property and casualty insurance		13,696			13,502			13,356
Corporate and other		33			43			46
Realized investment gains, net		369			402			193
Total revenues	$	14,098		$	13,947		$	13,595
Income (loss) before income tax
Property and casualty insurance
Underwriting
Personal insurance	$	370		$	509		$	192
Commercial insurance		492			692			44
Specialty insurance		495			406			262
Total insurance		1,357			1,607			498
Reinsurance assumed		—			9			47
		1,357			1,616			545
Increase in deferred policy acquisition costs		45			59			3
Underwriting income		1,402			1,675			548
Investment income		1,329			1,391			1,482
Other income (charges)		(4	)		6			10
Total property and casualty insurance		2,727			3,072			2,040
Corporate and other		(235	)		(237	)		(237	)
Realized investment gains, net		369			402			193
Total income before income tax	$	2,861		$	3,237		$	1,996

	December 31
	2014			2013			2012
	(in millions)
Assets
Property and casualty insurance	$	49,297		$	48,278		$	49,441
Corporate and other		2,078			2,248			2,830
Adjustments and eliminations		(89	)		(93	)		(87	)
Total assets	$	51,286		$	50,433		$	52,184

Revenues of Property and Casualty Group by Geographic Area

Revenues of the P&C Group by geographic area were as follows:

	Years Ended December 31
	2014		2013		2012
	(in millions)
Revenues
United States	$	10,448	$	10,205	$	9,996
International		3,248		3,297		3,360
Total	$	13,696	$	13,502	$	13,356