Segment Information - Schedule of Reconciliation of Revenues and Segment EBITDA from Segments to Consolidated (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Revenues		$ 5,182	$ 5,078	$ 8,920	$ 8,642
Amortization of cable distribution investments		0	(4)	0	(8)
Depreciation and amortization		(100)	(97)	(198)	(188)
Restructuring, impairment and other corporate matters		(14)	(170)	(6)	(196)
Equity earnings of affiliates		3	4	2	7
Interest expense, net		(98)	(80)	(148)	(130)
Non-operating other, net		(161)	81	(286)	314
Income before income tax expense		322	515	1,121	1,628
Income tax expense		(75)	(127)	(265)	(408)
Net income		247	388	856	1,220
Less: Net income attributable to noncontrolling interests	[1]	(18)	(15)	(28)	(20)
Net income attributable to Fox Corporation stockholders		229	373	828	1,200
Operating Segments | Cable Network Programming
Segment Reporting Information [Line Items]
Revenues		2,275	2,165	3,937	3,762
Segment EBITDA		687	657	1,487	1,405
Amortization of cable distribution investments		0	4	0	8
Depreciation and amortization		(27)	(25)	(53)	(45)
Operating Segments | Television
Segment Reporting Information [Line Items]
Revenues		2,937	2,961	4,987	4,914
Segment EBITDA		143	205	542	577
Depreciation and amortization		(30)	(30)	(60)	(59)
Corporate and Other
Segment Reporting Information [Line Items]
Revenues		124	58	213	123
Segment EBITDA		(138)	(81)	(272)	(153)
Depreciation and amortization		(43)	(42)	(85)	(84)
Eliminations
Segment Reporting Information [Line Items]
Revenues		$ (154)	$ (106)	$ (217)	$ (157)

[1] Net income attributable to noncontrolling interests includes $3 million and $1 million for the three months ended December 31, 2025 and 2024, respectively, and $4 million and $(1) million for the six months ended December 31, 2025 and 2024, respectively, relating to redeemable noncontrolling interests.