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Sales Inducements
 3 Months Ended
Mar. 31, 2014
Insurance [Abstract]  
Sales Inducements
Sales Inducements

The balances of and changes in sales inducements as of and for the periods ended March 31, 2014 and 2013 are as follows:

Changes in Deferred Sales Inducement Activity:
Three Months Ended
($ in millions)
March 31,
 
2014
 
2013
 
 
 
 
Balance, beginning of period
$
75.7

 
$
60.9

Sales inducements deferred
2.1

 
2.8

Amortization charged to income
(0.7
)
 
(0.7
)
Offsets to net unrealized investment gains or losses included in AOCI
(3.2
)
 
1.3

Balance, end of period
$
73.9

 
$
64.3