Equity - Schedule of Changes in Accumulated Other Comprehensive Loss in Shareholders' Equity by Component (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 14,320	$ 13,127	$ 13,691	$ 12,081
Reclassified from accumulated other comprehensive loss:
Other comprehensive income (loss)	(77)	171	(97)	73
Ending balance	14,617	13,400	14,617	13,400
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(903)	(1,535)	(883)	(1,438)
Reclassified from accumulated other comprehensive loss:
Other comprehensive income (loss)	(77)	171	(97)	74
Ending balance	(980)	(1,364)	(980)	(1,364)
Foreign Currency Translation Adjustment and Other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(743)	(1,234)	(717)	(1,130)
Other comprehensive income (loss) before reclassifications	(78)	167	(107)	65
Income tax	(4)	1	(1)	(1)
Other comprehensive income (loss), net of tax	(82)	168	(108)	64
Reclassified from accumulated other comprehensive loss:
Ending balance	(825)	(1,066)	(825)	(1,066)
Retirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(160)	(301)	(166)	(308)
Other comprehensive income (loss) before reclassifications	4	(1)	6	(1)
Income tax	(1)	0	(1)	0
Reclassified from accumulated other comprehensive loss:
Amortization of net actuarial loss and other	3	6	9	15
Tax benefit	(1)	(2)	(3)	(4)
Other comprehensive income (loss)	5	3	11	10
Ending balance	$ (155)	$ (298)	$ (155)	$ (298)