FAIR VALUE MEASUREMENTS - Book Values and Fair Values of Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Book values
Fair Value And Carrying Value By Balance Sheet Grouping [Line Items]
Current maturities of long-term debt and finance lease obligations	$ 842	$ 0
Long-term debt and finance lease obligations	8,621	9,436
Fair values
Fair Value And Carrying Value By Balance Sheet Grouping [Line Items]
Current maturities of long-term debt and finance lease obligations	823	0
Long-term debt and finance lease obligations	$ 7,749	$ 8,714