Segment Information - Schedule of Reconciliation of Revenues and Segment EBITDA from Segments to Consolidated (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenues		$ 5,078	$ 4,234	$ 8,642	$ 7,441
Amortization of cable distribution investments		(4)	(4)	(8)	(8)
Depreciation and amortization		(97)	(97)	(188)	(193)
Restructuring, impairment and other corporate matters		(170)	(18)	(196)	(9)
Equity earnings of affiliates		4	1	7	2
Interest expense, net		(80)	(72)	(130)	(114)
Non-operating other, net		81	(29)	314	(205)
Income before income tax expense		515	131	1,628	692
Income tax expense		(127)	(16)	(408)	(162)
Net income		388	115	1,220	530
Less: Net income attributable to noncontrolling interests	[1]	(15)	(6)	(20)	(14)
Net income attributable to Fox Corporation stockholders		373	109	1,200	516
Corporate and Other
Segment Reporting Information [Line Items]
Revenues		58	49	123	103
Segment EBITDA		(81)	(76)	(153)	(165)
Depreciation and amortization		(42)	(50)	(84)	(99)
Eliminations
Segment Reporting Information [Line Items]
Revenues		(106)	(15)	(157)	(29)
Cable Network Programming | Operating Segments
Segment Reporting Information [Line Items]
Revenues		2,165	1,658	3,762	3,045
Segment EBITDA		657	564	1,405	1,171
Depreciation and amortization		(25)	(19)	(45)	(37)
Television | Operating Segments
Segment Reporting Information [Line Items]
Revenues		2,961	2,542	4,914	4,322
Segment EBITDA		205	(138)	577	213
Depreciation and amortization		$ (30)	$ (28)	$ (59)	$ (57)

[1] Net income attributable to noncontrolling interests includes $1 million and $(4) million for the three months ended December 31, 2024 and 2023, respectively, and $(1) million and $(4) million for the six months ended December 31, 2024 and 2023, respectively, relating to redeemable noncontrolling interests.