Quarterly Data (Unaudited) - Schedule of Quarterly Financial Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended									12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Mar. 31, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Quarterly Financial Information Disclosure [Abstract]
Total Revenues	$ 1,923	$ 2,266	$ 2,479	$ 2,340	$ 2,466	$ 2,457	$ 2,627	$ 2,524		$ 9,008	$ 10,074	$ 9,024
Net (loss) income	(401)	(1,036)	103	(211)	(42)	23	119	128		(1,545)	228	(1,444)
Net income (loss) attributable to News Corporation stockholders	$ (397)	$ (730)	$ 85	$ (227)	$ (51)	$ 10	$ 95	$ 101		$ (1,269)	$ 155	$ (1,514)
Net income (loss) available to News Corporation stockholders per share—basic	$ (0.67)	$ (1.24)	$ 0.15	$ (0.39)						$ (2.16)	$ 0.27	$ (2.60)
Net income (loss) available to News Corporation stockholders per share—diluted	$ (0.67)	$ (1.24)	$ 0.14	$ (0.39)						$ (2.16)	$ 0.26	$ (2.60)
Income (loss) available to News Corporation stockholders per share—basic and diluted					$ (0.09)	$ 0.02	$ 0.16	$ 0.17
Goodwill [Line Items]
Non-cash impairment charge	$ 292									$ 1,690	$ 96	$ 280
Non-cash impairment of goodwill									$ 41	1,098	49
New Foxtel | News Media
Goodwill [Line Items]
Non-cash impairment of goodwill					$ 87
Foxtel
Goodwill [Line Items]
Non-cash impairment charge		$ 1,106
Non-cash impairment of goodwill		$ 882
News Media
Goodwill [Line Items]
Non-cash impairment of goodwill										216	$ 49
News America Marketing | News Media
Goodwill [Line Items]
Non-cash impairment charge				$ 273
Non-cash impairment of goodwill				$ 122						$ 235