Share-Based Compensation (Schedule of Total Share-Based Compensation Expense by Type of Award) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 96	$ 81	$ 89
Restricted Share Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	64	69	73
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 32	$ 12	$ 16