Segments Information (Tables)

3 Months Ended

Mar. 31, 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:

	Three Months Ended March 31
	2013			2012
	(in millions)
Revenues
Property and casualty insurance
Premiums earned
Personal insurance	$	1,031		$	990
Commercial insurance		1,308			1,286
Specialty insurance		666			672
Total insurance		3,005			2,948
Reinsurance assumed		(1	)		3
		3,004			2,951
Investment income		363			391
Total property and casualty insurance		3,367			3,342
Corporate and other		12			12
Realized investment gains, net		138			56
Total revenues	$	3,517		$	3,410
Income (loss) before income tax
Property and casualty insurance
Underwriting
Personal insurance	$	150		$	161
Commercial insurance		195			51
Specialty insurance		95			66
Total insurance		440			278
Reinsurance assumed		4			11
		444			289
Increase in deferred policy acquisition costs		41			14
Underwriting income		485			303
Investment income		351			380
Other income (charges)		5			(1	)
Total property and casualty insurance		841			682
Corporate and other		(63	)		(59	)
Realized investment gains, net		138			56
Total income before income tax	$	916		$	679