SHAREHOLDERS' EQUITY - Reconciliation of Number of Shares of Common Stock (Detail) - shares shares in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Common Stock Issued [Roll Forward]
Balance, beginning of period	1,352,739	1,351,018
Exercise of stock options and issuance of restricted shares	1,230	1,544
Balance, end of period	1,353,969	1,352,562
Treasury Stock [Roll Forward]
Balance, beginning of period	700,607	658,564
Balance, end of period	730,101	689,745
Shares outstanding, end of period	623,868	662,817
Treasury Stock
Treasury Stock [Roll Forward]
Stock acquired under share repurchase program, shares	30,249	32,186
Other purchases	354	419
Shares issued to AFL Stock Plan	(787)	(967)
Exercise of stock options	(108)	(240)
Other dispositions	(214)	(217)