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OTHER OPERATING STATEMENT DATA (Tables)
 12 Months Ended
Dec. 31, 2018
Insurance [Abstract]  
Schedule of insurance policy income
Insurance policy income consisted of the following (dollars in millions):

 
2018
 
2017
 
2016
Direct premiums collected
$
4,150.3

 
$
4,013.4

 
$
3,942.7

Reinsurance assumed
27.8

 
30.2

 
33.8

Reinsurance ceded
(156.2
)
 
(114.4
)
 
(132.9
)
Premiums collected, net of reinsurance
4,021.9

 
3,929.2

 
3,843.6

Change in unearned premiums
6.5

 
19.0

 
6.2

Less premiums on interest-sensitive life and products without mortality and morbidity risk which are recorded as additions to insurance liabilities
(1,588.5
)
 
(1,445.9
)
 
(1,386.7
)
Premiums on traditional products with mortality or morbidity risk
2,439.9

 
2,502.3

 
2,463.1

Fees and surrender charges on interest-sensitive products
153.2

 
145.0

 
138.0

Insurance policy income
$
2,593.1

 
$
2,647.3

 
$
2,601.1
Schedule of other operating cost and expense
Other operating costs and expenses were as follows (dollars in millions):

 
2018
 
2017
 
2016
Commission expense
$
122.8

 
$
115.6

 
$
110.5

Salaries and wages
233.2

 
237.3

 
231.0

Other
458.2

 
488.6

 
454.8

Total other operating costs and expenses
$
814.2

 
$
841.5

 
$
796.3
Schedule of changes in present value of future insurance profits
Changes in the present value of future profits were as follows (dollars in millions):

 
2018
 
2017
 
2016
Balance, beginning of year
$
359.6

 
$
401.8

 
$
449.0

Amortization
(45.1
)
 
(54.4
)
 
(62.2
)
Effect of reinsurance transaction
(60.4
)
 
—

 
—

Amounts related to changes in unrealized investment gains (losses) on fixed maturities, available for sale
89.5

 
12.2

 
15.0

Balance, end of year
$
343.6

 
$
359.6

 
$
401.8
Schedule of changes in deferred acquisition costs
Changes in deferred acquisition costs were as follows (dollars in millions):

 
2018
 
2017
 
2016
Balance, beginning of year
$
1,026.8

 
$
1,044.7

 
$
1,083.3

Additions
261.8

 
236.1

 
242.7

Amortization
(219.2
)
 
(184.9
)
 
(191.1
)
Effect of reinsurance transaction
(1.2
)
 
—

 
—

Amounts related to changes in unrealized investment gains (losses) on fixed maturities, available for sale
254.3

 
(69.1
)
 
(90.2
)
Balance, end of year
$
1,322.5

 
$
1,026.8

 
$
1,044.7