Segment Information (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Segment Information

Segment information is summarized in the following table: 

(Dollars in millions)	Three months ended March 31,
	2016			2015
Revenues:
Commercial lines insurance
Commercial casualty	$	257		$	244
Commercial property	214			196
Commercial auto	144			136
Workers' compensation	89			93
Other commercial	56			64
Commercial lines insurance premiums	760			733
Fee revenues	1			1
Total commercial lines insurance	761			734
Personal lines insurance
Personal auto	131			123
Homeowner	119			114
Other personal	33			31
Personal lines insurance premiums	283			268
Fee revenues	1			1
Total personal lines insurance	284			269
Excess and surplus lines insurance	43			40
Life insurance premiums	58			53
Separate account investment management fees	1			1
Total life insurance	59			54
Investments
Investment income, net of expenses	145			139
Realized investment gains, net	61			47
Total investment revenue	206			186
Other	11			2
Total revenues	$	1,364		$	1,285
Income (loss) before income taxes:
Insurance underwriting results
Commercial lines insurance	$	50		$	26
Personal lines insurance	28			(3		)
Excess and surplus lines insurance	17			4
Life insurance	(1		)	(3		)
Investments	184			165
Other	(13		)	(15		)
Total income before income taxes	$	265		$	174

Identifiable assets:	March 31, 2016		December 31, 2015
Property casualty insurance	$	2,699	$	2,717
Life insurance	1,372		1,325
Investments	14,978		14,485
Other	398		361
Total	$	19,447	$	18,888