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STATUTORY ACCOUNTING AND DIVIDEND RESTRICTIONS - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Aflac Re Bermuda |  |
Statutory Accounting Practices [Line Items] |  |
Capital and surplus, statutory accounting practices of the state or country basis | $ 581.0 | $ 439.0
Dividends declared | 0.0 | 0.0
Statutory Accounting Practices, Minimum Margin of Solvency, Assets Threshold | $ 0.5 |
Statutory Accounting Practices, Minimum Margin of Solvency, Percentage of Assets in Excess of Threshold | 1.50% |
Statutory Accounting Practices, Minimum Margin of Solvency, Percentage of Enhanced Capital Requirement | 25.00% |
Aflac |  |
Statutory Accounting Practices [Line Items] |  |
Dividends declared | $ 976.0 | 894.0
Amount available for dividend distribution without prior approval from regulatory agency | 912.0 |
CAIC |  |
Statutory Accounting Practices [Line Items] |  |
Dividends declared | 0.0 | 0.0
TOIC |  |
Statutory Accounting Practices [Line Items] |  |
Dividends declared | 0.0 | 0.0
Aflac New York |  |
Statutory Accounting Practices [Line Items] |  |
Dividends declared | 54.0 | 67.0
Aflac Japan |  |
Statutory Accounting Practices [Line Items] |  |
Capital and surplus, statutory accounting practices of the state or country basis | $ 8,100.0 | $ 8,100.0

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- Definition Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 2 -SubTopic 405 -Topic 942 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477787/942-405-45-2 + Details
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