v3.26.1
FAIR VALUE MEASUREMENTS Assets and Liabilities Measured at Fair Value Subject to Three-Tier Hierarchy (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Inputs, Level 1    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Cash and cash equivalents $ 3 $ 3
Fair Value, Net Asset (Liability) 46 59
Fair Value, Inputs, Level 2    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Fair Value, Net Asset (Liability) 1 (1)
Fair Value, Inputs, Level 3    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Fair Value, Net Asset (Liability) 0 0
Mutual fund - fixed income securities [Member] | Fair Value, Inputs, Level 1    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Mutual funds 27 41
Mutual fund - equity securities [Member] | Fair Value, Inputs, Level 1    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Mutual funds 16 15
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Interest Rate Swaps Derivatives $ 1 3
Interest Rate Derivative Liabilities, at Fair Value   $ 4