Segment Information (Reconciliation of Revenues and Segment EBITDA from Segments to Consolidated) (Details) - USD ($) $ in Millions		3 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Revenues		$ 2,717	$ 2,667
Amortization of cable distribution investments		(5)	(9)
Depreciation and amortization		(68)	(50)
Impairment and restructuring charges		(35)	(9)
Interest expense		(99)	(90)
Interest income		1	17
Other, net		519	(15)
Income before income tax expense		1,479	700
Income tax expense		(362)	(187)
Net income		1,117	513
Less: Net income attributable to noncontrolling interests	[1]	(11)	(14)
Net income attributable to Fox Corporation stockholders		1,106	499
Operating Segments | Cable Network Programming Segment
Segment Reporting Information [Line Items]
Revenues		1,325	1,285
Segment EBITDA		781	684
Depreciation and amortization		(13)	(13)
Operating Segments | Television Segment
Segment Reporting Information [Line Items]
Revenues		1,350	1,356
Segment EBITDA		457	251
Depreciation and amortization		(25)	(15)
Operating Segments | Other, Corporate and Eliminations Segment
Segment Reporting Information [Line Items]
Revenues		42	26
Segment EBITDA		(72)	(79)
Depreciation and amortization		$ (30)	$ (22)

[1] Net income attributable to noncontrolling interests includes $4 million and $9 million for the three months ended September 30, 2020 and 2019, respectively, relating to redeemable noncontrolling interests.