SUPPLEMENTAL FINANCIAL INFORMATION - Restructuring Activity (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Restructuring Reserve [Roll Forward]
Beginning balance	$ 166	$ 174
Cost incurred	1,114	659	$ 329
Cost paid/settled	(1,090)	(667)
Ending balance	189	166	174
Separation Costs
Restructuring Reserve [Roll Forward]
Beginning balance	133	155
Cost incurred	145	202
Cost paid/settled	(158)	(224)
Ending balance	120	133	155
Asset-Related Costs
Restructuring Reserve [Roll Forward]
Beginning balance	0	0
Cost incurred	55	101
Cost paid/settled	(55)	(101)
Ending balance	0	0	0
Other Costs
Restructuring Reserve [Roll Forward]
Beginning balance	32	19
Cost incurred	914	355
Cost paid/settled	(877)	(342)
Ending balance	$ 69	$ 32	$ 19