Segment Information (Tables)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Segment Information

Segment information is summarized in the following table: 

(Dollars in millions)	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Revenues:
Commercial lines insurance
Commercial casualty	$	265		$	257		$	785		$	753
Commercial property	217			205			646			604
Commercial auto	151			141			442			416
Workers' compensation	90			93			268			276
Other commercial	56			61			169			186
Commercial lines insurance premiums	779			757			2,310			2,235
Fee revenues	1			1			3			3
Total commercial lines insurance	780			758			2,313			2,238
Personal lines insurance
Personal auto	137			128			403			376
Homeowner	122			117			362			345
Other personal	34			32			99			96
Personal lines insurance premiums	293			277			864			817
Fee revenues	1			1			3			2
Total personal lines insurance	294			278			867			819
Excess and surplus lines insurance	48			42			136			124
Fee revenues	1			—			1			1
Total excess and surplus lines insurance	49			42			137			125
Life insurance premiums	58			51			175			156
Fee revenues	2			2			4			4
Total life insurance	60			53			179			160
Investments
Investment income, net of expenses	148			143			442			422
Realized investment gains, net	56			3			161			110
Total investment revenue	204			146			603			532
Other
Cincinnati Re insurance premiums	13			—			33			—
Other	2			1			5			5
Total other revenues	15			1			38			5
Total revenues	$	1,402		$	1,278		$	4,137		$	3,879
Income (loss) before income taxes:
Insurance underwriting results
Commercial lines insurance	$	72		$	121		$	148		$	244
Personal lines insurance	(8		)	(2		)	—			(30		)
Excess and surplus lines insurance	20			14			42			29
Life insurance	(4		)	1			(4		)	(1		)
Investments	181			125			536			468
Other	(8		)	(16		)	(38		)	(45		)
Total income before income taxes	$	253		$	243		$	684		$	665

Identifiable assets:	September 30, 2016		December 31, 2015
Property casualty insurance	$	2,857	$	2,717
Life insurance	1,417		1,325
Investments	15,682		14,485
Other	499		361
Total	$	20,455	$	18,888