Segment Information (Reconciliation of Depreciation and Amortization from Segments to Consolidated and Reconciliation of Capital Expenditures from Segments to Consolidated) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 300	$ 258	$ 212
Capital expenditures	484	359	235
Operating Segments | Cable Network Programming Segment
Segment Reporting Information [Line Items]
Depreciation and amortization	55	59	48
Capital expenditures	53	43	83
Operating Segments | Television Segment
Segment Reporting Information [Line Items]
Depreciation and amortization	104	73	96
Capital expenditures	100	72	71
Operating Segments | Other, Corporate and Eliminations Segment
Segment Reporting Information [Line Items]
Depreciation and amortization	141	126	68
Capital expenditures	$ 331	$ 244	$ 81