ADDITIONAL FINANCIAL INFORMATION - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions		12 Months Ended
		Jun. 30, 2026	Jun. 30, 2025		Jun. 30, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		$ 9,389	$ 9,011		$ 8,945
Fiscal year activity		33	(325)		(5)
Ending balance		9,236	9,389		9,011
Net change in the fair value of cash flow hedges, income tax expense (benefit)		(1)	(4)		(4)
Pensions plans, income tax (expense) benefit		6	(7)		6
Other comprehensive loss attributable to noncontrolling interests	[1]	38	(33)		(1)
Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(1,543)	(1,251)		(1,247)
Fiscal year activity		(5)	(292)	[2]	(4)
Ending balance		(1,548)	(1,543)		(1,251)
Cash flow hedge adjustments:
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		9	22		33
Fiscal year activity		(4)	(13)		(11)
Ending balance		5	9		22
Benefit plan adjustments:
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(327)	(309)		(328)
Fiscal year activity		18	(18)		19
Ending balance		(309)	(327)		(309)
Foreign currency translation adjustments:
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(1,225)	(964)		(952)
Fiscal year activity		(19)	(261)		(12)
Ending balance		$ (1,244)	$ (1,225)		$ (964)

[1] Primarily consists of foreign currency translation adjustments.

[2] Primarily relates to the disposition of Foxtel.