Equity - Schedule of Changes in Accumulated Other Comprehensive Loss in Shareholders' Equity by Component (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 13,786	$ 12,901	$ 13,691	$ 12,081
Reclassified from accumulated other comprehensive loss:
Other comprehensive income (loss)	21	(446)	(20)	(98)
Ending balance	14,320	13,127	14,320	13,127
AOCI Attributable to Parent
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(924)	(1,090)	(883)	(1,438)
Reclassified from accumulated other comprehensive loss:
Other comprehensive income (loss)	21	(445)	(20)	(97)
Ending balance	(903)	(1,535)	(903)	(1,535)
Foreign Currency Translation Adjustment and Other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(762)	(785)	(717)	(1,130)
Other comprehensive income (loss) before reclassifications	20	(441)	(29)	(102)
Income tax	(1)	(8)	3	(2)
Other comprehensive income (loss), net of tax	19	(449)	(26)	(104)
Reclassified from accumulated other comprehensive loss:
Ending balance	(743)	(1,234)	(743)	(1,234)
Retirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(162)	(305)	(166)	(308)
Other comprehensive income (loss) before reclassifications	0	1	2	0
Reclassified from accumulated other comprehensive loss:
Amortization of net actuarial loss and other	3	4	6	9
Tax benefit	(1)	(1)	(2)	(2)
Other comprehensive income (loss)	2	4	6	7
Ending balance	$ (160)	$ (301)	$ (160)	$ (301)