EMPLOYEE BENEFIT PLANS (Retirement Income Plans' Assets Carried at Fair Value) (Details) - Retirement Income - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	$ 381	$ 412
Total assets in the fair value hierarchy
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	74	0
Total common collect trust measured at net asset value
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	307	412
Cash equivalents — Level 1 | Total assets in the fair value hierarchy
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	74	0
Bond funds | Total common collect trust measured at net asset value
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	289	391
International equity funds | Total common collect trust measured at net asset value
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	15	14
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	1	4
Real estate fund | Total common collect trust measured at net asset value
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	$ 2	$ 3