Equity - Summary of Changes in Equity (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Class of Stock [Line Items]
Beginning balance	$ 9,074	$ 10,127	$ 8,389	$ 10,311
Net income (loss)	96	(1,036)	404	(1,144)
Other comprehensive income	29	(460)	450	(462)
Dividends	(83)	(78)	(163)	(159)
Other	13	15	49	13
Ending balance	$ 9,129	8,568	$ 9,129	8,568
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	391,154,191		391,154,191
Class B Common Stock
Class of Stock [Line Items]
Beginning balance, shares			199,630,240
Ending balance, shares	199,630,240		199,630,240
Common Stock | Class A Common Stock
Class of Stock [Line Items]
Beginning balance	$ 4	$ 4	$ 4	$ 4
Beginning balance, shares	391,000,000	389,000,000	389,000,000	386,000,000
Other, shares	0	0	2,000,000	3,000,000
Ending balance	$ 4	$ 4	$ 4	$ 4
Ending balance, shares	391,000,000	389,000,000	391,000,000	389,000,000
Common Stock | Class B Common Stock
Class of Stock [Line Items]
Beginning balance	$ 2	$ 2	$ 2	$ 2
Beginning balance, shares	200,000,000	200,000,000	200,000,000	200,000,000
Ending balance	$ 2	$ 2	$ 2	$ 2
Ending balance, shares	200,000,000	200,000,000	200,000,000	200,000,000
Additional Paid-in Capital
Class of Stock [Line Items]
Beginning balance	$ 12,091	$ 12,183	$ 12,148	$ 12,243
Dividends	(59)	(59)	(118)	(118)
Other	12	13	14	12
Ending balance	12,044	12,137	12,044	12,137
Accumulated Deficit
Class of Stock [Line Items]
Beginning balance	(2,976)	(2,114)	(3,241)	(1,979)
Net income (loss)	79	(730)	344	(872)
Other		(1)		0
Ending balance	(2,897)	(2,845)	(2,897)	(2,845)
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	(990)	(1,117)	(1,331)	(1,126)
Other comprehensive income	25	(351)	366	(344)
Other		2		1
Ending balance	(965)	(1,466)	(965)	(1,466)
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	8,131	8,958	7,582	9,144
Net income (loss)	79	(730)	344	(872)
Other comprehensive income	25	(351)	366	(344)
Dividends	(59)	(59)	(118)	(118)
Other	12	14	14	13
Ending balance	8,188	7,832	8,188	7,832
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	943	1,169	807	1,167
Net income (loss)	17	(306)	60	(272)
Other comprehensive income	4	(109)	84	(118)
Dividends	(24)	(19)	(45)	(41)
Other	1	1	35	0
Ending balance	$ 941	$ 736	$ 941	$ 736