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Income Taxes
 3 Months Ended
Mar. 31, 2020
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The following table sets forth the reconciliation between actual federal income tax expense and the amount computed at the indicated statutory rate for the three months ended March 31, 2020 and 2019:
($ millions)
Three months ended March 31
 
2020
 
2019
Amount at statutory rate
$
(30.2
)
 
21.0
 %
 
$
12.9

 
21.0
 %
Tax-exempt interest and dividends received deduction
(0.7
)
 
0.5

 
(0.7
)
 
(1.1
)
Other, net
1.5

 
(1.1
)
 
—

 
—

Federal income tax (benefit) expense
(29.4
)
 
20.4
 %
 
12.2

 
19.9
 %