SHAREHOLDERS' EQUITY - Reconciliation of Number of Shares of Common Stock (Detail) - shares shares in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 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	1,294	1,233
Balance, end of period	1,356,692	1,355,312
Treasury Stock [Roll Forward]
Balance, beginning of period	776,919	738,823
Share repurchase program	23,446	30,199
Balance, end of period	799,975	768,415
Shares outstanding, end of period	556,717	586,897
Treasury Stock
Treasury Stock [Roll Forward]
Other purchases	491	360
Shares issued to AFL Stock Plan	(594)	(707)
Exercise of stock options	(99)	(81)
Other dispositions	(188)	(179)