Earnings (Loss) Per Share - Computation of Basic And Diluted Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ 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	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net (loss) income	$ (401)	$ (1,036)	$ 103	$ (211)	$ (42)	$ 23	$ 119	$ 128	$ (1,545)	$ 228	$ (1,444)
Less: Net loss (income) attributable to noncontrolling interests									276	(73)	(70)
Less: Redeemable preferred stock dividends									0	0	(2)
Net (loss) income available to News Corporation stockholders									$ (1,269)	$ 155	$ (1,516)
Weighted-average number of shares of common stock outstanding—basic									587.9	584.7	582.7
Dilutive effect of equity awards									0.0	3.2	0.0
Weighted-average number of shares of common stock outstanding—diluted									587.9	587.9	582.7
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)