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		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Net income (loss)	$ 119	$ (66)	$ 247	$ 21
Less: Net income attributable to noncontrolling interests	(24)	(17)	(51)	(36)
Less: Redeemable preferred stock dividends	0	(1)	0	(1)
Net income (loss) available to News Corporation stockholders	$ 95	$ (84)	$ 196	$ (16)
Weighted-average number of shares of common stock outstanding—basic	584.9	582.7	584.4	582.5
Dilutive effect of equity awards	2.2	0.0	1.9	0.0
Weighted-average number of shares of common stock outstanding—diluted	587.1	582.7	586.3	582.5
Net income (loss) available to News Corporation stockholders per share—basic	$ 0.16	$ (0.14)	$ 0.34	$ (0.03)
Net income (loss) available to News Corporation stockholders per share—diluted	$ 0.16	$ (0.14)	$ 0.33	$ (0.03)