v3.26.1
FAIR VALUE MEASUREMENTS - Long-term Debt (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Carrying Amount    
Carrying amount and fair value of financial instruments    
Long-term debt, including current maturities $ 8,187.1 $ 8,125.3
Fair Value | Level 2    
Carrying amount and fair value of financial instruments    
Long-term debt, including current maturities $ 7,351.5 $ 7,381.8