v3.26.1
EMPLOYEE BENEFIT PLANS - Schedule of Retirement Income Plans Assets Carried at Fair Value (Details) - Retirement Income - USD ($)
$ in Millions
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value $ 29 $ 27 $ 25
Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Total common collective trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 29 27  
Cash equivalents — Level 1 | Fair Value, Inputs, Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Bond funds | Total common collective trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 5 6  
International equity funds | Total common collective trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 20 17  
Real estate fund | Total common collective trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 2 2  
Other | Total common collective trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value $ 2 $ 2