LEASES - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
Lessee Lease Description [Line Items]
Total leased assets	$ 125	$ 148	$ 165
Total lease liabilities	$ 133	$ 156	172
Amount recorded to retained earnings related to new accounting pronouncement			$ 7
Minimum
Lessee Lease Description [Line Items]
Operating and finance leases remaining lease term	1 year
Maximum
Lessee Lease Description [Line Items]
Operating and finance leases remaining lease term	25 years