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Deferred Policy Acquisition Costs (Tables)
 12 Months Ended
Dec. 31, 2019
Deferred Policy Acquisition Costs Disclosures [Abstract]  
Deferred Policy Acquisition Costs [Table Text Block]
The following reflects the amounts of policy acquisition costs deferred and amortized (dollars in millions):
 
Years ended December 31,
 
2019
 
2018
 
2017
Balance, beginning of year
 
$
3,398

 
$
3,240

 
$
3,339

Capitalization
 
526

 
608

 
348

Amortization (including interest)
 
(315
)
 
(438
)
 
(433
)
Change in value of embedded derivatives
 
(15
)
 
14

 
(70
)
Attributed to unrealized investment gains (losses)
 
(97
)
 
27

 
(8
)
Foreign currency translation
 
15

 
(53
)
 
64

Balance, end of year
 
$
3,512

 
$
3,398

 
$
3,240