Reinsurance (Tables)

3 Months Ended

Mar. 31, 2018

Reinsurance Disclosures [Abstract]

Property Casualty Insurance Premiums Written On Assumed And Ceded Business

The tables below summarize our consolidated property casualty insurance net written premiums, earned premiums and incurred loss and loss expenses:

(Dollars in millions)	Three months ended March 31,
	2018			2017
Direct written premiums	$	1,247		$	1,226
Assumed written premiums	49			33
Ceded written premiums	(38		)	(28		)
Net written premiums	$	1,258		$	1,231

Earned Consolidated Property Casualty Insurance Premiums On Assumed And Ceded Business

(Dollars in millions)	Three months ended March 31,
	2018			2017
Direct earned premiums	$	1,207		$	1,163
Assumed earned premiums	33			27
Ceded earned premiums	(40		)	(39		)
Earned premiums	$	1,200		$	1,151

Incurred Consolidated Property Casualty Insurance Loss And Loss Expenses On Assumed And Ceded Business

(Dollars in millions)	Three months ended March 31,
	2018			2017
Direct incurred loss and loss expenses	$	781		$	788
Assumed incurred loss and loss expenses	16			15
Ceded incurred loss and loss expenses	(6		)	(15		)
Incurred loss and loss expenses	$	791		$	788

Earned Life Insurance Premiums On Ceded Business

(Dollars in millions)	Three months ended March 31,
	2018			2017
Direct earned premiums	$	77		$	74
Ceded earned premiums	(17		)	(17		)
Earned premiums	$	60		$	57

Life Insurance Contract Holders' Benefits Incurred On Ceded Business

(Dollars in millions)	Three months ended March 31,
	2018			2017
Direct contract holders' benefits incurred	$	76		$	76
Ceded contract holders' benefits incurred	(13		)	(11		)
Contract holders' benefits incurred	$	63		$	65