Property Casualty Loss and Loss Expenses (Tables)

6 Months Ended

Jun. 30, 2019

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 June 30,						Six months ended June 30,
	2019			2018			2019			2018
Gross loss and loss expense reserves, beginning    of period	$	5,886		$	5,293		$	5,646		$	5,219
Less reinsurance recoverable	266			184			238			187
Net loss and loss expense reserves, beginning    of period	5,620			5,109			5,408			5,032
Net loss and loss expense reserves related to    acquisition of MSP at February 28, 2019	—			—			246			—
Net incurred loss and loss expenses related to:
Current accident year	947			852			1,804			1,691
Prior accident years	(84		)	(31		)	(151		)	(79		)
Total incurred	863			821			1,653			1,612
Net paid loss and loss expenses related to:
Current accident year	361			341			538			536
Prior accident years	437			354			1,084			873
Total paid	798			695			1,622			1,409
Net loss and loss expense reserves, end of period	5,685			5,235			5,685			5,235
Plus reinsurance recoverable	269			188			269			188
Gross loss and loss expense reserves, end of    period	$	5,954		$	5,423		$	5,954		$	5,423