Segment Information (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Segment Information

Segment information is summarized in the following table: 

(Dollars in millions)	Three months ended June 30,						Six months ended June 30,
	2017			2016			2017			2016
Revenues:
Commercial lines insurance
Commercial casualty	$	271		$	263		$	536		$	520
Commercial property	226			215			449			429
Commercial auto	158			147			313			291
Workers' compensation	86			89			170			178
Other commercial	55			57			109			113
Commercial lines insurance premiums	796			771			1,577			1,531
Fee revenues	1			1			2			2
Total commercial lines insurance	797			772			1,579			1,533
Personal lines insurance
Personal auto	144			135			285			266
Homeowner	128			121			253			240
Other personal	35			32			69			65
Personal lines insurance premiums	307			288			607			571
Fee revenues	1			1			3			2
Total personal lines insurance	308			289			610			573
Excess and surplus lines insurance	52			45			100			88
Fee revenues	1			—			1			—
Total excess and surplus lines insurance	53			45			101			88
Life insurance premiums	60			59			117			117
Fee revenues	1			1			3			2
Total life insurance	61			60			120			119
Investments
Investment income, net of expenses	151			149			300			294
Realized investment gains and losses, net	(11		)	44			149			105
Total investment revenue	140			193			449			399
Other
Cincinnati Re insurance premiums	26			10			48			20
Other	1			2			2			3
Total other revenues	27			12			50			23
Total revenues	$	1,386		$	1,371		$	2,909		$	2,735
Income (loss) before income taxes:
Insurance underwriting results
Commercial lines insurance	$	24		$	26		$	22		$	76
Personal lines insurance	(24		)	(20		)	(39		)	8
Excess and surplus lines insurance	19			5			37			22
Life insurance	4			1			4			—
Investments	117			171			403			355
Other	(12		)	(17		)	(23		)	(30		)
Total income before income taxes	$	128		$	166		$	404		$	431

Identifiable assets:	June 30, 2017		December 31, 2016
Property casualty insurance	$	3,042	$	2,967
Life insurance	1,427		1,366
Investments	16,431		15,569
Other	338		484
Total	$	21,238	$	20,386