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LEASES - Maturity of Operating and Finance Lease Liabilities (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
Operating Leases
2021	$ 50
2022	49
2023	46
2024	38
2025	36
Thereafter	147
Total lease payments	366
Less imputed interest	61
Total net present value	305
Finance Leases
2021	18
2022	15
2023	8
2024	4
2025	4
Thereafter	12
Total lease payments	61
Less imputed interest	16
Total net present value	45
Total
2021	68
2022	64
2023	54
2024	42
2025	40
Thereafter	159
Total lease payments	427
Less imputed interest	77
Total net present value	350
Sublease income	$ 11
Sublease income term	12 years

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