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, 2019	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 212	$ 171	$ 169
Capital expenditures	235	215	191
Operating Segments | Cable Network Programming Segment
Segment Reporting Information [Line Items]
Depreciation and amortization	48	38	33
Capital expenditures	83	64	41
Operating Segments | Television Segment
Segment Reporting Information [Line Items]
Depreciation and amortization	96	112	116
Capital expenditures	71	89	74
Other, Corporate and Eliminations Segment
Segment Reporting Information [Line Items]
Depreciation and amortization	68	21	20
Capital expenditures	$ 81	$ 62	$ 76