STOCKHOLDERS' EQUITY - Schedule of Changes in Accumulated Other Comprehensive Net (Loss) Income (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 482	$ 492	$ 388
Total other comprehensive (loss) income, net of tax	0	(2)	338
Ending balance	252	482	492
Accumulated other comprehensive net (loss) income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(157)	(155)	(493)
Other comprehensive (loss) income before reclassifications	22	7	(7)
Amounts reclassified from Accumulated other comprehensive net (loss) income	(22)	(8)	390
Income tax benefit (expense)	0	(1)	(45)
Total other comprehensive (loss) income, net of tax	0	(2)	338
Ending balance	(157)	(157)	(155)
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(233)	(239)	(445)
Other comprehensive (loss) income before reclassifications	1	5	(16)
Amounts reclassified from Accumulated other comprehensive net (loss) income	0	0	223
Income tax benefit (expense)	2	1	(1)
Total other comprehensive (loss) income, net of tax	3	6	206
Ending balance	(230)	(233)	(239)
Net unrealized gains (losses) on derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	77	85	99
Other comprehensive (loss) income before reclassifications	19	0	(8)
Amounts reclassified from Accumulated other comprehensive net (loss) income	(20)	(6)	(7)
Income tax benefit (expense)	(2)	(2)	1
Total other comprehensive (loss) income, net of tax	(3)	(8)	(14)
Ending balance	74	77	85
Pension and postretirement benefit adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1)	(1)	(147)
Other comprehensive (loss) income before reclassifications	2	2	17
Amounts reclassified from Accumulated other comprehensive net (loss) income	(2)	(2)	174
Income tax benefit (expense)	0	0	(45)
Total other comprehensive (loss) income, net of tax	0	0	146
Ending balance	$ (1)	$ (1)	$ (1)