Segments Information (Tables)

12 Months Ended

Dec. 31, 2011

Segments Information [Abstract]

Revenues, income before income tax and assets of each operating segment

	Years Ended December 31
	2011			2010			2009
	(in millions)
Revenues
Property and casualty insurance
Premiums earned
Personal insurance	$	3,917		$	3,768		$	3,692
Commercial insurance		4,945			4,647			4,762
Specialty insurance		2,769			2,787			2,829
Total insurance		11,631			11,202			11,283
Reinsurance assumed		13			13			48
		11,644			11,215			11,331
Investment income		1,598			1,590			1,585
Other revenues		—			—			2
Total property and casualty insurance		13,242			12,805			12,918
Corporate and other		55			88			75
Realized investment gains, net		288			426			23
Total revenues	$	13,585		$	13,319		$	13,016
Income (loss) before income tax
Property and casualty insurance
Underwriting
Personal insurance	$	47		$	303		$	600
Commercial insurance		1			347			510
Specialty insurance		427			512			474
Total insurance		475			1,162			1,584
Reinsurance assumed		36			30			74
		511			1,192			1,658
Increase (decrease) in deferred policy acquisition costs		63			30			(27	)
Underwriting income		574			1,222			1,631
Investment income		1,562			1,558			1,549
Other income (charges)		21			2			(3	)
Total property and casualty insurance		2,157			2,782			3,177
Corporate and other loss		(246	)		(220	)		(238	)
Realized investment gains, net		288			426			23
Total income before income tax	$	2,199		$	2,988		$	2,962

	December 31
	2011			2010			2009
	(in millions)
Assets
Property and casualty insurance	$	48,435		$	47,838		$	47,682
Corporate and other		2,513			2,483			2,876
Adjustments and eliminations		(83	)		(72	)		(109	)
Total assets	$	50,865		$	50,249		$	50,449

Revenues of the property and casualty group by geographic area

	Years Ended December 31
	2011		2010		2009
	(in millions)
Revenues
United States	$	9,729	$	9,642	$	9,991
International		3,513		3,163		2,927
Total	$	13,242	$	12,805	$	12,918