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SCHEDULE IV REINSURANCE
 12 Months Ended
Dec. 31, 2017
Reinsurance Disclosures [Abstract]  
SCHEDULE IV REINSURANCE
SCHEDULE IV
REINSURANCE
Aflac Incorporated and Subsidiaries
Years Ended December 31,
(In millions)
Gross
Amount
 
Ceded to
Other
Companies
 
Assumed
from Other
companies
 
Net
Amount
 
Percentage
of Amount
Assumed
to Net
2017:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Life insurance in force
$
152,502

 
 
$
4,121

 
 
 
$
0

 
 
$
148,381

 
 
0
%
 
Premiums:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Health insurance
$
14,829

 
 
$
554

 
 
 
$
222

 
 
$
14,497

 
 
1
%
 
Life insurance
4,046

 
 
12

 
 
 
0

 
 
4,034

 
 
0

 
Total earned premiums
$
18,875

 
 
$
566

 
 
 
$
222

 
 
$
18,531

 
 
1
%
 
2016:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Life insurance in force
$
151,093

 
 
$
3,741

 
 
 
$
0

 
 
$
147,352

 
 
0
%
 
Premiums:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Health insurance
$
14,839

 
 
$
595

 
 
 
$
241

 
 
$
14,485

 
 
1
%
 
Life insurance
4,753

 
 
13

 
 
 
0

 
 
4,740

 
 
0

 
Total earned premiums
$
19,592

 
 
$
608

 
 
 
$
241

 
 
$
19,225

 
 
1
%
 
2015:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Life insurance in force
$
146,610

 
 
$
3,547

 
 
 
$
0

 
 
$
143,063

 
 
0
%
 
Premiums:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Health insurance
$
13,604

 
 
$
509

 
 
 
$
186

 
 
$
13,281

 
 
1
%
 
Life insurance
4,300

 
 
11

 
 
 
0

 
 
4,289

 
 
0

 
Total earned premiums
$
17,904

 
 
$
520

 
 
 
$
186

 
 
$
17,570

 
 
1
%
 

Premiums by type may not agree in total to the corresponding consolidated amounts due to rounding.
See the accompanying Report of Independent Registered Public Accounting Firm.