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EMPLOYEE BENEFIT PLANS - Schedule of Retirement Income Plans Assets Carried at Fair Value (Details) - Retirement Income - USD ($)
$ in Millions
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value $ 25 $ 381 $ 412
Total assets in the fair value hierarchy      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 74  
Total common collect trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 25 307  
Cash equivalents — Level 1 | Total assets in the fair value hierarchy      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 74  
Bond funds | Total common collect trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 6 289  
International equity funds | Total common collect trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 16 15  
Domestic equity funds | Total common collect trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Short-term investment fund | Total common collect trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 1  
Real estate fund | Total common collect trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 2 2  
Other | Total common collect trust measured at net asset value      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value $ 1 $ 0