LEASES - Contractual Maturity Dates (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Finance Leases
2021	$ 0
2022	0
2023	0
2024	0
2025	0
2026 and beyond	1
Total lease payments	1
Less imputed interest	0
Present value of lease liabilities	1
Operating Leases
2021	52
2022	41
2023	31
2024	22
2025	14
2026 and beyond	34
Total lease payments	194
Less imputed interest	16
Present value of lease liabilities	178
Total
2021	52
2022	41
2023	31
2024	22
2025	14
2026 and beyond	35
Total lease payments	195
Less imputed interest	16
Total lease liabilities	$ 179	$ 165