EMPLOYEE BENEFIT PLANS - Schedule of Net Actuarial Loss (Gain) Recorded in Accumulated Other Comprehensive Net (Loss) Income (Details) $ in Millions	12 Months Ended
	Jun. 30, 2024 USD ($)
Retirement Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net actuarial loss (gain) as of beginning of year	$ 213
Amortization, curtailment and settlement during the year	(182)
Loss (gain) during the year	(11)
Net actuarial loss (gain) as of end of year	20
Retirement Health Care
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Net actuarial loss (gain) as of beginning of year	(14)
Amortization, curtailment and settlement during the year	2
Loss (gain) during the year	(2)
Net actuarial loss (gain) as of end of year	$ (14)