Significant Reporting And Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2018
Accounting Policies [Abstract]  
Schedule of New Accounting Pronouncements and Changes in Accounting Principles
The following table illustrates the effect of adopting this standard on the Consolidated Balance Sheets ($ in millions):
 
December 31, 2017
 
As Reported
 
As Adjusted
 
Difference
Agents' balances and premium receivable
$
508.1

 
$
508.0

 
$
(0.1
)
Current and deferred income taxes
9.4

 
10.5

 
1.2

Total assets
2,473.4

 
2,474.5

 
1.1

Other liabilities
114.3

 
119.8

 
5.5

Shareholders' equity
720.3

 
715.8

 
(4.5
)
Total liabilities and shareholders' equity
2,473.4

 
2,474.5

 
1.1


The following table illustrates the effect of adopting this standard on the Consolidated Statements of Earnings (in millions, except per share amounts):        
 
Three months ended March 31, 2017
 
As Reported
 
As Adjusted
 
Difference
Installment and other fee income
$
26.9

 
$
26.7

 
$
(0.2
)
Total revenues
377.8

 
377.6

 
(0.2
)
Earnings before income taxes
15.1

 
14.9

 
(0.2
)
Provision for income taxes
4.4

 
4.4

 
(0.1
)
Net earnings
10.6

 
10.5

 
(0.1
)
Net earnings per common share:
 
 
 
 
 
  Basic
$
0.97

 
$
0.96

 
$
(0.01
)
  Diluted
0.96

 
0.94

 
(0.02
)