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LEASES - Balance Sheet Components (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Assets |  |
Right of Use Assets | $ 43 | $ 46
Finance lease assets | 30 | 33
Total leased assets | 73 | 79
Current |  |
Operating | 16 | 14
Finance | 2 | 2
Noncurrent |  |
Operating | 27 | 32
Finance | 18 | 21
Total lease liabilities | $ 63 | $ 69
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Plants, Properties and Equipment, net | Plants, Properties and Equipment, net
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Other current liabilities | Other current liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Notes payable and current maturities of long-term debt | Notes payable and current maturities of long-term debt
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Long-term Debt and Lease Obligation | Long-term Debt and Lease Obligation
Finance lease, accumulated amortization | $ 13 | $ 10

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