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REINSURANCE (Tables)
 3 Months Ended
Mar. 31, 2018
Reinsurance Disclosures [Abstract]  
Effects of Reinsurance
The following table reconciles direct premium income and direct benefits and claims to net amounts after the effect of reinsurance.
 
Three Months Ended
March 31,
 
(In millions)
2018
 
2017
 
Direct premium income
 
$
4,833

 
 
 
$
4,724

 
 
Ceded to other companies:
 
 
 
 
 
 
 
 
    Ceded Aflac Japan closed blocks
 
(129
)
 
 
 
(130
)
 
 
    Other
 
(15
)
 
 
 
(12
)
 
 
Assumed from other companies:
 
 
 
 
 
 
 
 
    Retrocession activities
 
54

 
 
 
54

 
 
    Other
 
2

 
 
 
2

 
 
Net premium income
 
$
4,745

 
 
 
$
4,638

 
 
 
 
 
 
 
 
 
 
 
Direct benefits and claims
 
$
3,119

 
 
 
$
3,129

 
 
Ceded benefits and change in reserves for future benefits:
 
 
 
 
 
 
 
 
    Ceded Aflac Japan closed blocks
 
(117
)
 
 
 
(122
)
 
 
    Eliminations
 
12

 
 
 
13

 
 
    Other
 
(12
)
 
 
 
(11
)
 
 
Assumed from other companies:
 
 
 
 
 
 
 
 
    Retrocession activities
 
52

 
 
 
54

 
 
    Eliminations
 
(12
)
 
 
 
(13
)
 
 
    Other
 
0

 
 
 
2

 
 
Benefits and claims, net
 
$
3,042

 
 
 
$
3,052