Property Casualty Loss and Loss Expenses (Tables)

3 Months Ended

Mar. 31, 2013

Premiums Written, Net, Property and Casualty [Abstract]

Consolidated Property Casualty Loss And Loss Expense Reserves

This table summarizes activity for our consolidated property casualty loss and loss expense reserves:

(In millions)	Three months ended March 31,
	2013			2012
Gross loss and loss expense reserves, beginning of period	$	4,169		$	4,280
Less reinsurance receivable	356			375
Net loss and loss expense reserves, beginning of period	3,813			3,905
Net incurred loss and loss expenses related to:
Current accident year	534			655
Prior accident years	(10		)	(116		)
Total incurred	524			539
Net paid loss and loss expenses related to:
Current accident year	121			132
Prior accident years	392			375
Total paid	513			507
Net loss and loss expense reserves, end of period	3,824			3,937
Plus reinsurance receivable	349			352
Gross loss and loss expense reserves, end of period	$	4,173		$	4,289