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, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net income (loss)	$ 261	$ 103	$ 308	$ (108)
Less: Net income attributable to noncontrolling interests	(30)	(18)	(43)	(34)
Net income (loss) attributable to News Corporation stockholders	$ 231	$ 85	$ 265	$ (142)
Weighted-average number of shares of common stock outstanding - basic (in shares)	590.7	588.2	590.1	587.4
Dilutive effect of equity awards (in shares)	1.9	2.1	1.6	0.0
Weighted-average number of shares of common stock outstanding - diluted	592.6	590.3	591.7	587.4
Net income (loss) attributable to News Corporation stockholders per share - basic (in dollars per share)	$ 0.39	$ 0.15	$ 0.45	$ (0.24)
Net income (loss) attributable to News Corporation stockholders per share - diluted (in dollars per share)	$ 0.39	$ 0.14	$ 0.45	$ (0.24)