SHAREHOLDERS' EQUITY - Reconciliation of Number of Shares of Common Stock (Detail) - shares shares in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Common Stock Issued [Roll Forward]
Balance, beginning of period	1,355,398	1,354,079
Exercise of stock options and issuance of restricted shares	1,220	1,148
Balance, end of period	1,356,618	1,355,227
Treasury Stock [Roll Forward]
Balance, beginning of period	776,919	738,823
Share repurchase program	18,564	20,809
Balance, end of period	795,249	759,258
Shares outstanding, end of period	561,369	595,969
Treasury Stock
Treasury Stock [Roll Forward]
Other purchases	480	354
Shares issued to AFL Stock Plan	(430)	(498)
Exercise of stock options	(98)	(52)
Other dispositions	(186)	(178)