Segment Information (Tables)

3 Months Ended

Mar. 31, 2017

Segment Reporting [Abstract]

Segment Information

Segment information is summarized in the following table: 

(Dollars in millions)	Three months ended March 31,
	2017			2016
Revenues:
Commercial lines insurance
Commercial casualty	$	265		$	257
Commercial property	223			214
Commercial auto	155			144
Workers' compensation	84			89
Other commercial	54			56
Commercial lines insurance premiums	781			760
Fee revenues	1			1
Total commercial lines insurance	782			761
Personal lines insurance
Personal auto	141			131
Homeowner	125			119
Other personal	34			33
Personal lines insurance premiums	300			283
Fee revenues	2			1
Total personal lines insurance	302			284
Excess and surplus lines insurance	48			43
Life insurance premiums	57			58
Fee revenues	2			1
Total life insurance	59			59
Investments
Investment income, net of expenses	149			145
Realized investment gains, net	160			61
Total investment revenue	309			206
Other
Cincinnati Re insurance premiums	22			10
Other	1			1
Total other revenues	23			11
Total revenues	$	1,523		$	1,364
Income (loss) before income taxes:
Insurance underwriting results
Commercial lines insurance	$	(2	)	$	50
Personal lines insurance	(15		)	28
Excess and surplus lines insurance	18			17
Life insurance	—			(1		)
Investments	286			184
Other	(11		)	(13		)
Total income before income taxes	$	276		$	265

Identifiable assets:	March 31, 2017		December 31, 2016
Property casualty insurance	$	2,886	$	2,967
Life insurance	1,359		1,366
Investments	16,123		15,569
Other	385		484
Total	$	20,753	$	20,386