Equity - Summary of Changes in Equity (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Changes In Equity [Line Items]
Beginning balance	$ 10,127	$ 10,434	$ 10,311	$ 10,477
Cumulative impact from adoption of new standards			9	20
Net (loss) income	(1,036)	23	(1,144)	270
Other comprehensive (loss) income	(460)	67	(462)	(170)
Dividends	(78)	(78)	(159)	(160)
Other	15	12	13	21
Ending balance	$ 8,568	10,458	$ 8,568	10,458
Class A Common Stock [Member]
Changes In Equity [Line Items]
Beginning balance, shares			385,580,015
Ending balance, shares	388,843,519		388,843,519
Class B Common Stock [Member]
Changes In Equity [Line Items]
Beginning balance, shares			199,630,240
Ending balance, shares	199,630,240		199,630,240
Common Stock [Member] | Class A Common Stock [Member]
Changes In Equity [Line Items]
Beginning balance	$ 4	$ 4	$ 4	$ 4
Beginning balance, shares	389,000,000	385,000,000	386,000,000	383,000,000
Cumulative impact from adoption of new standards			$ 0	$ 0
Net (loss) income	$ 0	$ 0	0	0
Other comprehensive (loss) income	0	0	0	0
Dividends	0	0	0	0
Other	$ 0	$ 0	$ 0	$ 0
Other, Shares	0	0	3,000,000	2,000,000
Ending balance	$ 4	$ 4	$ 4	$ 4
Ending balance, shares	389,000,000	385,000,000	389,000,000	385,000,000
Common Stock [Member] | Class B Common Stock [Member]
Changes In Equity [Line Items]
Beginning balance	$ 2	$ 2	$ 2	$ 2
Beginning balance, shares	200,000,000	200,000,000	200,000,000	200,000,000
Cumulative impact from adoption of new standards			$ 0	$ 0
Net (loss) income	$ 0	$ 0	0	0
Other comprehensive (loss) income	0	0	0	0
Dividends	0	0	0	0
Other	$ 0	$ 0	$ 0	$ 0
Other, Shares	0	0	0	0
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 [Member]
Changes In Equity [Line Items]
Beginning balance	$ 12,183	$ 12,271	$ 12,243	$ 12,322
Cumulative impact from adoption of new standards			0	0
Net (loss) income	0	0	0	0
Other comprehensive (loss) income	0	0	0	0
Dividends	(59)	(58)	(118)	(117)
Other	13	16	12	24
Ending balance	12,137	12,229	12,137	12,229
Accumulated Deficit [Member]
Changes In Equity [Line Items]
Beginning balance	(2,114)	(1,937)	(1,979)	(2,163)
Cumulative impact from adoption of new standards			6	32
Net (loss) income	(730)	10	(872)	206
Other comprehensive (loss) income	0	0	0	0
Dividends	0	0	0	0
Other	(1)	0	0	(2)
Ending balance	(2,845)	(1,927)	(2,845)	(1,927)
Accumulated Other Comprehensive Loss [Member]
Changes In Equity [Line Items]
Beginning balance	(1,117)	(1,076)	(1,126)	(874)
Cumulative impact from adoption of new standards			3	(22)
Net (loss) income	0	0	0	0
Other comprehensive (loss) income	(351)	57	(344)	(124)
Dividends	0	0	0	0
Other	2	0	1	1
Ending balance	(1,466)	(1,019)	(1,466)	(1,019)
Total News Corporation Equity
Changes In Equity [Line Items]
Beginning balance	8,958	9,264	9,144	9,291
Cumulative impact from adoption of new standards			9	10
Net (loss) income	(730)	10	(872)	206
Other comprehensive (loss) income	(351)	57	(344)	(124)
Dividends	(59)	(58)	(118)	(117)
Other	14	16	13	23
Ending balance	7,832	9,289	7,832	9,289
Noncontrolling Interest [Member]
Changes In Equity [Line Items]
Beginning balance	1,169	1,170	1,167	1,186
Cumulative impact from adoption of new standards			0	10
Net (loss) income	(306)	13	(272)	64
Other comprehensive (loss) income	(109)	10	(118)	(46)
Dividends	(19)	(20)	(41)	(43)
Other	1	(4)	0	(2)
Ending balance	$ 736	$ 1,169	$ 736	$ 1,169