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Goodwill and Other Intangibles (Tables)
 12 Months Ended
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes in the carrying value of goodwill by reporting segment
Changes in the carrying value of goodwill during 2013, 2014 and 2015, by reporting segment, are presented in the following table (in millions):
 
Property and
Casualty
 
Annuity
 
Total
Balance at January 1, 2013 and January 1, 2014
$
152

 
$
33

 
$
185

Acquisition of subsidiary in 2014
16

 
—

 
16

Balance at December 31, 2014
168

 
33

 
201

Sale of subsidiaries in 2015
—

 
(2
)
 
(2
)
Balance at December 31, 2015
$
168

 
$
31

 
$
199