Shareholders' Equity - Changes in Ordinary and Treasury Shares (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Beginning Balance	$ 4,411	$ 4,519	$ 4,141	$ 4,821
Share buyback / cancellations	(160)	(128)	(200)	(423)
Purchase of treasury shares	0	0	(221)	(133)
Ending Balance	4,308	4,577	$ 4,308	$ 4,577
Ordinary Shares
Beginning Balance (in shares)			1,489	1,538
Beginning Balance	15	15	$ 15	$ 15
Share buyback / cancellations (in shares)			(18)	(36)
Share buyback / cancellations	$ 0	$ 0	$ 0	$ 0
Ending Balance (in shares)	1,471	1,503	1,471	1,503
Ending Balance	$ 15	$ 15	$ 15	$ 15
Treasury Shares
Beginning Balance (in shares)			2	3
Beginning Balance	(18)	(37)	$ (18)	$ (29)
Options exercised and shares vested (in shares)			(19)	(11)
Options exercised and shares vested			$ 225	$ 127
Purchase of treasury shares (in shares)			18	11
Purchase of treasury shares	$ 0	$ 0	$ (221)	$ (133)
Ending Balance (in shares)	1	3	1	3
Ending Balance	$ (14)	$ (35)	$ (14)	$ (35)