SUBSEQUENT EVENTS	9 Months Ended
Sep. 30, 2023
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTSIn October 2023, the Company received BMA approval for Aflac Re and ALIJ to enter into a coinsurance transaction whereby ALIJ will cede 30% of the liabilities associated with certain cancer insurance policies and riders to Aflac Re. The Company intends to execute this transaction in the fourth quarter of 2023. This transaction is expected to transfer approximately ¥286 billion of reserves associated with these policies and is expected to also involve the transfer of assets by ALIJ to Aflac Re to support these reserves. This internal reinsurance transaction will have no financial statement impact on a consolidated basis, except for the effect of foreign currency accounting.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//855/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

Name:	us-gaap_SubsequentEventsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration