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Insurance Expenses (Tables)
 12 Months Ended
Dec. 31, 2017
Insurance Expenses [Abstract]  
Schedule of Insurance Expenses
Insurance Expenses for the years ended December 31, 2017, 2016 and 2015 were:
DOLLARS IN MILLIONS
 
2017
 
2016
 
2015
Commissions
 
$
425.6

 
$
399.2

 
$
357.6

General Expenses
 
194.1

 
209.0

 
241.1

Taxes, Licenses and Fees
 
52.8

 
48.8

 
44.2

Total Costs Incurred
 
672.5

 
657.0

 
642.9

Policy Acquisition Costs:
 
 
 
 
 
 
Deferred
 
(351.6
)
 
(314.9
)
 
(270.6
)
Amortized
 
318.3

 
299.3

 
257.4

Net Policy Acquisition Costs Deferred
 
(33.3
)
 
(15.6
)
 
(13.2
)
Amortization of Insurance in Force
 
5.1

 
5.9

 
15.4

Insurance Expenses
 
$
644.3

 
$
647.3

 
$
645.1