Equity - Summary of Changes in Equity (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Class of Stock [Line Items]
Beginning balance	$ 8,389	$ 10,311
Net income (loss)	47	(211)
Other comprehensive income	113	(188)
Dividends	(79)	(81)
Other	(16)	(11)
Ending balance	$ 8,454	9,829
Cumulative Effect, Period of Adoption, Adjustment
Class of Stock [Line Items]
Beginning balance		9
Class A Common Stock
Class of Stock [Line Items]
Beginning balance, shares	388,922,752
Ending balance, shares	390,954,837
Class B Common Stock
Class of Stock [Line Items]
Beginning balance, shares	199,630,240
Ending balance, shares	199,630,240
Common Stock | Class A Common Stock
Class of Stock [Line Items]
Beginning balance	$ 4	$ 4
Beginning balance, shares	389,000,000	386,000,000
Other, Shares	2,000,000	2,000,000
Ending balance	$ 4	$ 4
Ending balance, shares	391,000,000	388,000,000
Common Stock | Class B Common Stock
Class of Stock [Line Items]
Beginning balance	$ 2	$ 2
Beginning balance, shares	200,000,000	200,000,000
Ending balance	$ 2	$ 2
Ending balance, shares	200,000,000	200,000,000
Additional Paid-in Capital
Class of Stock [Line Items]
Beginning balance	$ 12,148	$ 12,243
Dividends	(59)	(59)
Other	(14)	(10)
Ending balance	12,075	12,174
Accumulated Deficit
Class of Stock [Line Items]
Beginning balance	(3,241)	(1,979)
Net income (loss)	34	(227)
Ending balance	(3,207)	(2,200)
Accumulated Deficit | Cumulative Effect, Period of Adoption, Adjustment
Class of Stock [Line Items]
Beginning balance		6
Accumulated Other Comprehensive Loss
Class of Stock [Line Items]
Beginning balance	(1,331)	(1,126)
Other comprehensive income	96	(143)
Ending balance	(1,235)	(1,266)
Accumulated Other Comprehensive Loss | Cumulative Effect, Period of Adoption, Adjustment
Class of Stock [Line Items]
Beginning balance		3
Total News Corp Equity
Class of Stock [Line Items]
Beginning balance	7,582	9,144
Net income (loss)	34	(227)
Other comprehensive income	96	(143)
Dividends	(59)	(59)
Other	(14)	(10)
Ending balance	7,639	8,714
Total News Corp Equity | Cumulative Effect, Period of Adoption, Adjustment
Class of Stock [Line Items]
Beginning balance		9
Non-controlling Interests
Class of Stock [Line Items]
Beginning balance	807	1,167
Net income (loss)	13	16
Other comprehensive income	17	(45)
Dividends	(20)	(22)
Other	(2)	(1)
Ending balance	$ 815	$ 1,115