Segment Information - Reconciliation of Assets from Segments to Consolidated (Detail) - USD ($) $ in Millions	Mar. 31, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Total assets	$ 21,717	$ 21,866
Investments	1,250	1,034
Cable Network Programming
Segment Reporting Information [Line Items]
Total assets	2,778	2,658
Television
Segment Reporting Information [Line Items]
Total assets	8,111	7,803
Other, Corporate and Eliminations
Segment Reporting Information [Line Items]
Total assets	$ 9,578	$ 10,371