LEASES - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease right-of-use assets	$ 885	$ 1,019
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Operating lease liabilities	$ 977	$ 1,066
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Weighted average remaining lease term (years)	7 years	7 years
Weighted average discount rate	3.10%	2.74%