LEASES - Balance Sheet Components (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets
Operating lease assets	$ 41	$ 46
Finance lease assets	29	33
Total leased assets	70	79
Current
Operating	16	14
Finance	4	2
Noncurrent
Operating	26	32
Finance	18	21
Total lease liabilities	$ 64	$ 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