EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of year (in shares)	10,564	24,218	57,111
Granted (in shares)	0	0	0
Exercised (in shares)	(8,288)	(13,654)	(22,429)
Forfeited (in shares)	(1,630)	0	(3,156)
Expired (in shares)	0	0	(7,308)
Outstanding, end of year (in shares)	646	10,564	24,218
Options exercisable at year-end (in shares)	646	10,564	24,218
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Outstanding, beginning of year (in dollars per share)	$ 20.45	$ 20.01	$ 18.92
Exercised (in dollars per share)	20.45	19.67	18.96
Forfeited (in dollars per share)	20.45		19.20
Expired (in dollars per share)			15.06
Outstanding, end of year (in dollars per share)	20.45	20.45	20.01
Options exercisable at year-end (in dollars per share)	20.45	$ 20.45	20.01
Weighted-average fair value of options forfeited (in dollars per share)	$ 5.50		$ 4.59