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BUSINESS SEGMENT INFORMATION | 3 Months Ended
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Mar. 31, 2013
Segment Reporting [Abstract] |
BUSINESS SEGMENT INFORMATION | BUSINESS SEGMENT INFORMATION The Company consists of two reportable insurance business segments: Aflac Japan and Aflac U.S., both of which sell supplemental health and life insurance. Operating business segments that are not individually reportable and business activities not included in Aflac Japan or Aflac U.S. are included in the "Other business segments" category. We do not allocate corporate overhead expenses to business segments. We evaluate and manage our business segments using a financial performance measure called pretax operating earnings. Our definition of operating earnings excludes the following items from net earnings on an after-tax basis: realized investment gains/losses (securities transactions, impairments, and the impact of derivative and hedging activities) and nonrecurring items. We then exclude income taxes related to operations to arrive at pretax operating earnings. Information regarding operations by segment follows:
| Three Months Ended March 31,
(In millions) | 2013 |  | 2012
Revenues: |  |  |  |  |  |  |
Aflac Japan: |  |  |  |  |  |  |
Earned premiums |  | $ | 3,905 |  |  |  |  | $ | 4,148 |  |
Net investment income |  | 674 |  |  |  |  | 730 |  |
Other income |  | 26 |  |  |  |  | 16 |  |
Total Aflac Japan |  | 4,605 |  |  |  |  | 4,894 |  |
Aflac U.S.: |  |  |  |  |  |  |
Earned premiums |  | 1,280 |  |  |  |  | 1,231 |  |
Net investment income |  | 157 |  |  |  |  | 152 |  |
Other income |  | 1 |  |  |  |  | 2 |  |
Total Aflac U.S. |  | 1,438 |  |  |  |  | 1,385 |  |
Other business segments |  | 12 |  |  |  |  | 14 |  |
Total business segment revenues |  | 6,055 |  |  |  |  | 6,293 |  |
Realized investment gains (losses) |  | 156 |  |  |  |  | (45 | ) |
Corporate |  | 92 |  |  |  |  | 68 |  |
Intercompany eliminations |  | (95 | ) |  |  |  | (76 | ) |
Total revenues |  | $ | 6,208 |  |  |  |  | $ | 6,240 |  |
| Three Months Ended March 31,
(In millions) | 2013 |  | 2012
Pretax earnings: |  |  |  |  |  |  |
Aflac Japan |  | $ | 989 |  |  |  |  | $ | 1,040 |  |
Aflac U.S. |  | 281 |  |  |  |  | 271 |  |
Total business segment pretax operating earnings |  | 1,270 |  |  |  |  | 1,311 |  |
Interest expense, noninsurance operations |  | (48 | ) |  |  |  | (44 | ) |
Corporate and eliminations |  | (17 | ) |  |  |  | (20 | ) |
Pretax operating earnings |  | 1,205 |  |  |  |  | 1,247 |  |
Realized investment gains (losses) |  | 156 |  |  |  |  | (45 | ) |
Total earnings before income taxes |  | $ | 1,361 |  |  |  |  | $ | 1,202 |  |
Income taxes applicable to pretax operating earnings |  | $ | 415 |  |  |  |  | $ | 433 |  |
Effect of foreign currency translation on operating earnings |  | (71 | ) |  |  |  | 20 |  |
Assets were as follows:
(In millions) | March 31, 2013 |  | December 31, 2012
Assets: |  |  |  |  |  |  |
Aflac Japan |  | $ | 103,098 |  |  |  |  | $ | 113,678 |  |
Aflac U.S. |  | 16,130 |  |  |  |  | 16,122 |  |
Other business segments |  | 152 |  |  |  |  | 154 |  |
Total business segment assets |  | 119,380 |  |  |  |  | 129,954 |  |
Corporate |  | 19,861 |  |  |  |  | 20,318 |  |
Intercompany eliminations |  | (18,703 | ) |  |  |  | (19,178 | ) |
Total assets |  | $ | 120,538 |  |  |  |  | $ | 131,094 |  |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8864-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8380-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8538-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
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