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Income Taxes
 6 Months Ended
Jun. 30, 2014
Income Tax Disclosure [Abstract]  
Income Taxes
INCOME TAXES
As of June 30, 2014, and December 31, 2013, we had no liability for unrecognized tax benefits.
 
The differences between the 35 percent statutory income tax rate and our effective income tax rate were as follows:
(In millions)
 
Three months ended June 30,
 
Six months ended June 30,
 
 
2014
 
2013
 
2014
 
2013
Tax at statutory rate
 
$
37

 
35.0
 %
 
$
52

 
35.0
 %
 
$
79

 
35.0
 %
 
$
128

 
35.0
 %
  Increase (decrease) resulting from:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

Tax-exempt income from municipal bonds
 
(8
)
 
(7.5
)
 
(9
)
 
(6.1
)
 
(16
)
 
(7.1
)
 
(16
)
 
(4.4
)
Dividend received exclusion
 
(7
)
 
(6.5
)
 
(6
)
 
(4.2
)
 
(14
)
 
(6.2
)
 
(12
)
 
(3.3
)
Other
 
1

 
0.5

 
1

 
1.0

 
2

 
0.9

 
1

 
0.4

Provision for income taxes
 
$
23

 
21.5
 %
 
$
38

 
25.7
 %
 
$
51

 
22.6
 %
 
$
101

 
27.7
 %
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
The change in our effective tax rate was primarily due to changes in pretax income from underwriting results and realized investment gains and losses, compared with immaterial changes in the amount of permanent book-tax differences.