Property Casualty Loss and Loss Expenses (Tables)

3 Months Ended

Mar. 31, 2017

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 March 31,
	2017			2016
Gross loss and loss expense reserves, beginning of period	$	5,035		$	4,660
Less reinsurance recoverable	298			281
Net loss and loss expense reserves, beginning of period	4,737			4,379
Net incurred loss and loss expenses related to:
Current accident year	826			723
Prior accident years	(38		)	(62		)
Total incurred	788			661
Net paid loss and loss expenses related to:
Current accident year	185			146
Prior accident years	509			416
Total paid	694			562
Net loss and loss expense reserves, end of period	4,831			4,478
Plus reinsurance recoverable	297			272
Gross loss and loss expense reserves, end of period	$	5,128		$	4,750