Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Company's revenues and income by segment [Table Text Block]

The following tables summarize the components of the Company’s revenues, income and total assets by reportable business segments:



(For the three months ended March 31, in millions)	Business Insurance		Bond & Specialty Insurance		Personal Insurance		Total Reportable Segments

2018
Premiums	$	3,568	$	582	$	2,387	$	6,537
Net investment income	446		58		99		603
Fee income	99		—		4		103
Other revenues	31		6		17		54
Total segment revenues ⁽¹⁾	$	4,144	$	646	$	2,507	$	7,297

Segment income ⁽¹⁾	$	452	$	173	$	129	$	754

2017
Premiums	$	3,429	$	555	$	2,199	$	6,183
Net investment income	453		61		96		610
Fee income	109		—		4		113
Other revenues	9		5		16		30
Total segment revenues ⁽¹⁾	$	4,000	$	621	$	2,315	$	6,936

Segment income ⁽¹⁾	$	442	$	145	$	89	$	676

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(1)	Segment revenues for reportable business segments exclude net realized investment gains (losses). Segment income for reportable business segments equals net income excluding the after-tax impact of net realized investment gains (losses).

Business segment reconciliations of revenue and income, net of tax [Table Text Block]



	Three Months Ended March 31,
(in millions)	2018			2017
Revenue reconciliation
Earned premiums
Business Insurance:
Domestic:
Workers’ compensation	$	971		$	976
Commercial automobile	562			506
Commercial property	438			435
General liability	521			491
Commercial multi-peril	805			774
Other	7			7
Total Domestic	3,304			3,189
International	264			240
Total Business Insurance	3,568			3,429
Bond & Specialty Insurance:
Domestic:
Fidelity and surety	246			234
General liability	242			235
Other	47			45
Total Domestic	535			514
International	47			41
Total Bond & Specialty Insurance	582			555
Personal Insurance:
Domestic:
Automobile	1,225			1,094
Homeowners and Other	995			955
Total Domestic	2,220			2,049
International	167			150
Total Personal Insurance	2,387			2,199
Total earned premiums	6,537			6,183
Net investment income	603			610
Fee income	103			113
Other revenues	54			30
Total segment revenues	7,297			6,936
Other revenues	—			1
Net realized investment gains (losses)	(11		)	5
Total revenues	$	7,286		$	6,942
Income reconciliation, net of tax
Total segment income	$	754		$	676
Interest Expense and Other ⁽¹⁾	(76		)	(62		)
Core income	678			614
Net realized investment gains (losses)	(9		)	3
Net income	$	669		$	617

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(1) The primary component of Interest Expense and Other was after-tax interest expense of $70 million and $58 million in the three months ended March 31, 2018 and 2017, respectively.

Asset reconciliation [Table Text Block]



(in millions)	March 31, 2018		December 31, 2017
Asset reconciliation
Business Insurance	$	78,747	$	78,082
Bond & Specialty Insurance	8,787		8,776
Personal Insurance	15,605		15,949
Total segment assets	103,139		102,807
Other assets ⁽¹⁾	537		676
Total consolidated assets	$	103,676	$	103,483

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(1)	The primary components of other assets at March 31, 2018 were accrued over-funded benefit plan assets related to the Company’s qualified domestic pension plan and other intangible assets, and the primary components at December 31, 2017 were accrued over-funded benefit plan assets related to the Company’s qualified domestic pension plan, other intangible assets and deferred taxes.