LEASES - Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Finance lease cost, amortization of leased assets	$ 109	$ 120	$ 131
Finance lease cost, interest of lease liabilities	42	45	55
Operating lease cost	981	949	863
Short-term lease cost	258	281	245
Variable lease cost	2,230	1,859	1,599
Total lease cost	$ 3,620	$ 3,254	$ 2,893