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Claim and Claim Adjustment Expense Reserves (Tables)
 3 Months Ended
Mar. 31, 2015
Claim and Claim Adjustment Expense Reserves [Abstract]  
Net prior year development
The following tables and discussion present net prior year development recorded for Specialty, Commercial, International and Corporate & Other Non-Core segments.
Three months ended March 31, 2015
 
 
 
 
 
 
 
 
 
(In millions)

Specialty
 
 Commercial
 
International
 
Corporate
& Other
Non-Core
 
Total
Pretax (favorable) unfavorable net prior year claim and allocated claim adjustment expense reserve development
$
2

 
$
(5
)
 
$
(4
)
 
$
—

 
$
(7
)
Pretax (favorable) unfavorable premium development
(6
)
 
(1
)
 
16

 
—

 
9

Total pretax (favorable) unfavorable net prior year development
$
(4
)
 
$
(6
)
 
$
12

 
$
—

 
$
2


Three months ended March 31, 2014
 
 
 
 
 
 
 
 
 
(In millions)

Specialty
 
 Commercial
 
International
 
Corporate
& Other
Non-Core
 
Total
Pretax (favorable) unfavorable net prior year claim and allocated claim adjustment expense reserve development
$
(3
)
 
$
18

 
$
10

 
$
—

 
$
25

Pretax (favorable) unfavorable premium development
(6
)
 
(18
)
 
(7
)
 
—

 
(31
)
Total pretax (favorable) unfavorable net prior year development
$
(9
)
 
$
—

 
$
3

 
$
—

 
$
(6
)
Net prior year claim and allocated claim adjustment expense reserve development for Specialty segment
The following table presents further detail of the net prior year claim and allocated claim adjustment expense reserve development (development) recorded for the Specialty segment.
Three months ended March 31
 
 
 
(In millions)
2015
 
2014
Pretax (favorable) unfavorable net prior year claim and allocated claim adjustment expense reserve development:
 
 
 
Medical Professional Liability
$
14

 
$
—

Other Professional Liability and Management Liability
(3
)
 
(6
)
Surety
1

 
1

Warranty
—

 
—

Other
(10
)
 
2

Total pretax (favorable) unfavorable net prior year claim and allocated claim adjustment expense reserve development
$
2

 
$
(3
)
Net prior year claim and allocated claim adjustment expense reserve development for Commercial segment
The following table presents further detail of the development recorded for the Commercial segment.
Three months ended March 31



(In millions)
2015

2014
Pretax (favorable) unfavorable net prior year claim and allocated claim adjustment expense reserve development:

 
 
 
Commercial Auto
$
—

 
$
20

General Liability
4

 
—

Workers' Compensation
(1
)
 
11

Property and Other
(8
)
 
(13
)
Total pretax (favorable) unfavorable net prior year claim and allocated claim adjustment expense reserve development

$
(5
)
 
$
18
Net prior year claim and allocated claim adjustment expense reserve development for International segment
The following table presents further detail of the development recorded for the International segment.
Three months ended March 31
 
 
 
(In millions)
2015
 
2014
Pretax (favorable) unfavorable net prior year claim and allocated claim adjustment expense reserve development:

 
 
 
Medical Professional Liability
$
—

 
$
1

Other Professional Liability
—

 
(1
)
Liability
(5
)
 
(2
)
Property & Marine
(6
)
 
8

Other
7

 
(6
)
Commutations
—

 
10

Total pretax (favorable) unfavorable net prior year claim and allocated claim adjustment expense reserve development

$
(4
)
 
$
10