SEGMENT INFORMATION - Revenue and Long-Lived Assets by Geographic Region (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting [Line Items]
Revenues:	$ 9,028	$ 8,452	$ 8,252
Total long-lived assets	3,430	3,120
U.S. and Canada
Segment Reporting [Line Items]
Revenues:	4,368	4,121	4,004
Total long-lived assets	1,686	1,415
Domestic Pension Benefits
Segment Reporting [Line Items]
Revenues:	4,200	4,000	3,900
Europe
Segment Reporting [Line Items]
Revenues:	1,830	1,710	1,734
Total long-lived assets	901	924
U.K.
Segment Reporting [Line Items]
Revenues:	1,300	1,200	1,300
Australasia and Other
Segment Reporting [Line Items]
Revenues:	2,830	2,621	2,514
Total long-lived assets	843	781
Australia
Segment Reporting [Line Items]
Revenues:	$ 2,400	$ 2,200	$ 2,100