Investments - Schedule of Summarized Financial Information (Detail) - USD ($) $ in Millions		3 Months Ended								9 Months Ended	12 Months Ended
	Apr. 02, 2018	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, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Schedule of Equity Method Investments [Line Items]
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 income (loss) attributable to News Corporation stockholders		$ (397)	$ (730)	$ 85	$ (227)	$ (51)	$ 10	$ 95	$ 101		$ (1,269)	$ 155	$ (1,514)
Foxtel
Schedule of Equity Method Investments [Line Items]
Total Revenues										$ 1,818
Operating income										155
Net income (loss) attributable to News Corporation stockholders										$ 64
Depreciation and amortization	$ 187
Operating income before depreciation and amortization	$ 342