Segment Information (Reconciliation of Assets from Segments to Consolidated) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Total assets	$ 22,185	$ 22,926
Investments	578	899
Operating Segments | Cable Network Programming
Segment Reporting Information [Line Items]
Total assets	2,682	2,577
Operating Segments | Television
Segment Reporting Information [Line Items]
Total assets	7,915	7,305
Operating Segments | Other, Corporate and Eliminations
Segment Reporting Information [Line Items]
Total assets	$ 11,010	$ 12,145