FAIR VALUE MEASUREMENTS - Book Values and Fair Values of Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Book values
Fair Value And Carrying Value By Balance Sheet Grouping [Line Items]
Current maturities of long-term debt and finance lease obligations	$ 2,634	$ 2,668
Long-term debt and finance lease obligations	11,092	11,130
Fair values
Fair Value And Carrying Value By Balance Sheet Grouping [Line Items]
Current maturities of long-term debt and finance lease obligations	2,606	2,621
Long-term debt and finance lease obligations	$ 9,872	$ 10,067