SUBSEQUENT EVENTS - Additional Information (Details) - ALIJ - Aflac Re Bermuda - Subsequent Event $ in Billions	Jan. 01, 2023 USD ($)
Subsequent Event [Line Items]
Ceded insurance, percentage	28.00%
Ceded reinsurance, amount of reserves transferred	$ 2.1

Percentage of risk undertaken originally by insurer ceded to reinsurer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=99397103&loc=d3e6811-158387

Name:	us-gaap_ReinsuranceRetentionPolicyReinsuredRiskPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration