BUSINESS SEGMENT INFORMATION - Additional Information (Details) $ in Millions |
3 Months Ended | 6 Months Ended | |||||
|---|---|---|---|---|---|---|---|
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Jun. 30, 2026
USD ($)
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Jun. 30, 2025
USD ($)
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Jun. 30, 2026
USD ($)
segment
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Jun. 30, 2025
USD ($)
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Dec. 31, 2025 |
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| Segment Reporting [Line Items] | |||||||
| Number of reportable insurance business segments | segment | 2 | ||||||
| Net earned premiums | [1] | $ 3,252 | $ 3,470 | $ 6,562 | $ 6,851 | ||
| Aflac Re Bermuda Ltd. (Aflac Re) | |||||||
| Segment Reporting [Line Items] | |||||||
| Net earned premiums | $ 152 | $ 178 | $ 310 | $ 356 | |||
| Aflac Japan | |||||||
| Segment Reporting [Line Items] | |||||||
| Percentage of the Company's total revenues | 51.00% | 54.00% | 51.00% | 54.00% | |||
| Percentage of the Company's total assets | 75.00% | 75.00% | 76.00% | ||||
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| X | ||||||||||
- Definition Percentage of Company Assets. No definition available.
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- Definition Percentage of Company Revenue. No definition available.
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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- Details
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