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Sales Inducements (Tables)
 12 Months Ended
Dec. 31, 2012
Deferred Sales Inducements [Abstract]  
Changes in Deferred Sales Inducements
Changes in sales inducement activity are as follows: 
 
For the years ended December 31,
 
2012
2011
2010
Balance, beginning of period
$
186

$
197

$
194

Sales inducements deferred
4

6

10

Amortization—Unlock
(59
)
(4
)
(9
)
Amortization charged to income
(13
)
(13
)
2

Balance, end of period
$
118

$
186

$
197