EMPLOYEE BENEFIT PLANS - Changes in Pension Plan Level 3 Assets (Details) - Pension Plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Summary of changes in fair value of the pension plans' level 3 assets
Fair value of plan assets at January 1	$ 1,600	$ 2,294
Return on plan assets:
Fair value of plan assets at December 31	1,642	1,600
Level 3
Summary of changes in fair value of the pension plans' level 3 assets
Fair value of plan assets at January 1	115	122
Return on plan assets:
Relating to assets still held at the reporting date	(3)	(9)
Purchases, sales, settlements and expenses	325	2
Fair value of plan assets at December 31	$ 437	$ 115