Property Casualty Loss and Loss Expenses (Tables)

9 Months Ended

Sep. 30, 2016

Premiums Written, Net [Abstract]

Consolidated Property Casualty Loss And Loss Expense Reserves

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

(Dollars in millions)	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Gross loss and loss expense reserves, beginning  of period	$	4,918		$	4,647		$	4,660		$	4,438
Less reinsurance recoverable	310			292			281			282
Net loss and loss expense reserves, beginning of  period	4,608			4,355			4,379			4,156
Net incurred loss and loss expenses related to:
Current accident year	730			661			2,261			2,096
Prior accident years	(40		)	(48		)	(151		)	(140		)
Total incurred	690			613			2,110			1,956
Net paid loss and loss expenses related to:
Current accident year	374			343			848			794
Prior accident years	288			261			1,005			954
Total paid	662			604			1,853			1,748
Net loss and loss expense reserves, end of period	4,636			4,364			4,636			4,364
Plus reinsurance recoverable	301			289			301			289
Gross loss and loss expense reserves, end of  period	$	4,937		$	4,653		$	4,937		$	4,653