Equity - Schedule of Changes in Accumulated Other Comprehensive Loss in Shareholders' Equity by Component (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 12,081	$ 10,338	$ 8,860
Reclassified from accumulated other comprehensive loss:
Other comprehensive income (loss), net of tax	555	(145)	250
Ending balance	13,691	12,081	10,338
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,438)	(1,293)	(1,543)
Reclassified from accumulated other comprehensive loss:
Other comprehensive income (loss), net of tax	555	(145)	250
Ending balance	(883)	(1,438)	(1,293)
Foreign Currency Translation Adjustment and Other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,130)	(962)	(1,149)
Other comprehensive income (loss) before reclassifications	418	(153)	225
Income tax	(5)	(15)	(38)
Other comprehensive income (loss), net of tax	413	(168)	187
Reclassified from accumulated other comprehensive loss:
Ending balance	(717)	(1,130)	(962)
Retirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(308)	(331)	(394)
Other comprehensive income (loss) before reclassifications	163	23	75
Income tax	(34)	(6)	(22)
Reclassified from accumulated other comprehensive loss:
Amortization of net actuarial loss and other	18	8	14
Tax benefit	(5)	(2)	(4)
Other comprehensive income (loss), net of tax	142	23	63
Ending balance	$ (166)	$ (308)	$ (331)