Equity - Summary of Changes in Equity (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Changes In Equity [Line Items]
Balance, beginning of period	$ 10,434	$ 11,158	$ 10,477	$ 11,073
Cumulative impact from adoption of new accounting standards			20
Net income (loss)	23	(1,110)	270	(1,089)
Other comprehensive income (loss)	67	1	(170)	136
Dividends	(78)	(78)	(160)	(158)
Other	12	20	21	29
Balance, end of period	$ 10,458	9,991	$ 10,458	9,991
Class A Common Stock [Member]
Changes In Equity [Line Items]
Balance, beginning of period, Shares			383,385,353
Balance, end of period, Shares	385,444,822		385,444,822
Class B Common Stock [Member]
Changes In Equity [Line Items]
Balance, beginning of period, Shares			199,630,240
Balance, end of period, Shares	199,630,240		199,630,240
Common Stock [Member] | Class A Common Stock [Member]
Changes In Equity [Line Items]
Balance, beginning of period	$ 4	$ 4	$ 4	$ 4
Balance, beginning of period, Shares	385,000,000	383,000,000	383,000,000	382,000,000
Cumulative impact from adoption of new accounting standards			$ 0
Net income (loss)	$ 0	$ 0	0	$ 0
Other comprehensive income (loss)	0	0	0	0
Dividends	0	0	0	0
Other	0	0	$ 0	$ 0
Other, Shares			2,000,000	1,000,000
Balance, end of period	$ 4	$ 4	$ 4	$ 4
Balance, end of period, Shares	385,000,000	383,000,000	385,000,000	383,000,000
Common Stock [Member] | Class B Common Stock [Member]
Changes In Equity [Line Items]
Balance, beginning of period	$ 2	$ 2	$ 2	$ 2
Balance, beginning of period, Shares	200,000,000	200,000,000	200,000,000	200,000,000
Cumulative impact from adoption of new accounting standards			$ 0
Net income (loss)	$ 0	$ 0	0	$ 0
Other comprehensive income (loss)	0	0	0	0
Dividends	0	0	0	0
Other	0	0	0	0
Balance, end of period	$ 2	$ 2	$ 2	$ 2
Balance, end of period, Shares	200,000,000	200,000,000	200,000,000	200,000,000
Additional Paid-in Capital [Member]
Changes In Equity [Line Items]
Balance, beginning of period	$ 12,271	$ 12,350	$ 12,322	$ 12,395
Cumulative impact from adoption of new accounting standards			0
Net income (loss)	0	0	0	0
Other comprehensive income (loss)	0	0	0	0
Dividends	(58)	(59)	(117)	(118)
Other	16	19	24	33
Balance, end of period	12,229	12,310	12,229	12,310
Accumulated Deficit [Member]
Changes In Equity [Line Items]
Balance, beginning of period	(1,937)	(664)	(2,163)	(648)
Cumulative impact from adoption of new accounting standards			32
Net income (loss)	10	(1,128)	206	(1,143)
Other comprehensive income (loss)	0	0	0	0
Dividends	0	0	0	0
Other	0	0	(2)	(1)
Balance, end of period	(1,927)	(1,792)	(1,927)	(1,792)
Accumulated Other Comprehensive Loss [Member]
Changes In Equity [Line Items]
Balance, beginning of period	(1,076)	(832)	(874)	(964)
Cumulative impact from adoption of new accounting standards			(22)
Net income (loss)	0	0	0	0
Other comprehensive income (loss)	57	3	(124)	135
Dividends	0	0	0	0
Other	0	0	1	0
Balance, end of period	(1,019)	(829)	(1,019)	(829)
Total News Corporation Equity
Changes In Equity [Line Items]
Balance, beginning of period	9,264	10,860	9,291	10,789
Cumulative impact from adoption of new accounting standards			10
Net income (loss)	10	(1,128)	206	(1,143)
Other comprehensive income (loss)	57	3	(124)	135
Dividends	(58)	(59)	(117)	(118)
Other	16	19	23	32
Balance, end of period	9,289	9,695	9,289	9,695
Noncontrolling Interest [Member]
Changes In Equity [Line Items]
Balance, beginning of period	1,170	298	1,186	284
Cumulative impact from adoption of new accounting standards			10
Net income (loss)	13	18	64	54
Other comprehensive income (loss)	10	(2)	(46)	1
Dividends	(20)	(19)	(43)	(40)
Other	(4)	1	(2)	(3)
Balance, end of period	$ 1,169	$ 296	$ 1,169	$ 296