LEASE COMMITMENTS - LEASE ASSETS AND LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets:
Operating lease assets	$ 726	$ 1,062
Finance lease assets	581	365
Total lease assets	1,307	1,427
Assets and Liabilities, Lessee [Abstract]
Current operating lease liabilities	186	473
Current finance lease liabilities	85	42
Non-current operating lease liabilities	585	641
Non-current finance lease liabilities	504	316
Total lease liabilities	$ 1,360	$ 1,472
Property, plant and equipment	Property, plant and equipment, net	Property, plant and equipment, net
Current maturities of long-term debt	Long-term Debt and Lease Obligation, Current	Long-term Debt and Lease Obligation, Current
Long-term debt, net	Long-term debt, net	Long-term debt, net