Segment Information (Reconciliation of Revenues and Segment EBITDA from Segments to Consolidated) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Revenues		$ 3,778	$ 3,583	$ 6,445	$ 6,124
Amortization of cable distribution investments		(5)	(9)	(14)	(19)
Depreciation and amortization		(57)	(51)	(107)	(94)
Impairment and restructuring charges		0	0	(9)	0
Interest expense		(90)	(15)	(180)	(31)
Interest income		8	0	25	0
Other, net		302	(339)	287	(200)
Income before income tax expense		419	31	1,119	862
Income tax expense		(105)	(7)	(292)	(223)
Net income		314	24	827	639
Less: Net income attributable to noncontrolling interests	[1]	(14)	(16)	(28)	(27)
Net income attributable to Fox Corporation stockholders		300	8	799	612
Operating Segments | Cable Network Programming Segment
Segment Reporting Information [Line Items]
Revenues		1,469	1,434	2,754	2,699
Segment EBITDA		556	519	1,240	1,152
Depreciation and amortization		(16)	(12)	(29)	(23)
Operating Segments | Television Segment
Segment Reporting Information [Line Items]
Revenues		2,266	2,149	3,622	3,426
Segment EBITDA		(214)	(14)	37	157
Depreciation and amortization		(14)	(26)	(29)	(52)
Operating Segments | Other, Corporate and Eliminations Segment
Segment Reporting Information [Line Items]
Revenues		43	0	69	(1)
Segment EBITDA		(81)	(60)	(160)	(103)
Depreciation and amortization		$ (27)	$ (13)	$ (49)	$ (19)

[1] Net income attributable to noncontrolling interests includes $3 million and $10 million for the three months ended December 31, 2019 and 2018, respectively, and $12 million and $21 million for the six months ended December 31, 2019 and 2018, respectively, relating to redeemable noncontrolling interests.