Equity - Summary of Changes in Equity (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Changes In Equity [Line Items]
Beginning balance	$ 9,829	$ 10,430	$ 10,311	$ 10,477
Cumulative impact from adoption of new standards			9	20
Net (loss) income	103	119	(108)	247
Other comprehensive (loss) income	186	(134)	(2)	(237)
Dividends	0	0	(81)	(82)
Other	9	19	(2)	9
Ending balance	$ 10,127	10,434	$ 10,127	10,434
Class A Common Stock [Member]
Changes In Equity [Line Items]
Beginning balance, shares			385,580,015
Ending balance, shares	388,601,457		388,601,457
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	388,000,000	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	1,000,000	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	$ 12,174	$ 12,257	$ 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	0	0	(59)	(59)
Other	9	14	(1)	8
Ending balance	12,183	12,271	12,183	12,271
Accumulated Deficit [Member]
Changes In Equity [Line Items]
Beginning balance	(2,200)	(2,032)	(1,979)	(2,163)
Cumulative impact from adoption of new standards			6	32
Net (loss) income	85	95	(142)	196
Other comprehensive (loss) income	0	0	0	0
Dividends	0	0	0	0
Other	1	0	1	(2)
Ending balance	(2,114)	(1,937)	(2,114)	(1,937)
Accumulated Other Comprehensive Loss [Member]
Changes In Equity [Line Items]
Beginning balance	(1,266)	(970)	(1,126)	(874)
Cumulative impact from adoption of new standards			3	(22)
Net (loss) income	0	0	0	0
Other comprehensive (loss) income	150	(106)	7	(181)
Dividends	0	0	0	0
Other	(1)	0	(1)	1
Ending balance	(1,117)	(1,076)	(1,117)	(1,076)
Total News Corporation Equity
Changes In Equity [Line Items]
Beginning balance	8,714	9,261	9,144	9,291
Cumulative impact from adoption of new standards			9	10
Net (loss) income	85	95	(142)	196
Other comprehensive (loss) income	150	(106)	7	(181)
Dividends	0	0	(59)	(59)
Other	9	14	(1)	7
Ending balance	8,958	9,264	8,958	9,264
Noncontrolling Interest [Member]
Changes In Equity [Line Items]
Beginning balance	1,115	1,169	1,167	1,186
Cumulative impact from adoption of new standards			0	10
Net (loss) income	18	24	34	51
Other comprehensive (loss) income	36	(28)	(9)	(56)
Dividends	0	0	(22)	(23)
Other	0	5	(1)	2
Ending balance	$ 1,169	$ 1,170	$ 1,169	$ 1,170