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Share-Based Compensation (Narrative) (Details) - USD ($) shares in Thousands, $ 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]
Tax benefit related to share-based compensation	$ 12
Total expense on employee retirement savings plans	$ 66	$ 60	$ 55
Performance Share Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target performance goal (as a percent)	234.00%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	0	0	0
2021 LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant	21,000
2021 LTIP [Member] \| Awards Other than Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant	8,000
2021 LTIP [Member] \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant	21,000