Segment Information (Reconciliation of Assets from Segments to Consolidated) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Total assets	$ 21,866	$ 22,185
Investments	1,034	578
Cable Network Programming
Segment Reporting Information [Line Items]
Total assets	2,658	2,682
Television
Segment Reporting Information [Line Items]
Total assets	7,803	7,915
Other, Corporate and Eliminations
Segment Reporting Information [Line Items]
Total assets	$ 10,371	$ 11,010