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LEASES - Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Finance leases | $ 1 | $ 1
Operating leases | 176 | 159
Total right-of-use assets | 177 | 160
Current Liabilities: |  |
Operating leases | 48 | 44
Noncurrent liabilities |  |
Finance leases | 1 | 1
Operating leases | 130 | 120
Total lease liabilities | $ 179 | $ 165
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:AccruedLiabilitiesCurrent | us-gaap:AccruedLiabilitiesCurrent
Weighted-average discount rate |  |
Finance leases | 3.70% | 3.60%
Operating leases | 3.00% | 2.90%
Weighted-average remaining lease term in years |  |
Finance leases | 6 years 6 months | 7 years
Operating leases | 5 years 2 months 12 days | 5 years 3 months 18 days

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