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		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income (loss)	$ 96	$ (1,036)	$ 404	$ (1,144)
Less: Net (income) loss attributable to noncontrolling interests	(17)	306	(60)	272
Net income (loss) attributable to News Corporation stockholders	$ 79	$ (730)	$ 344	$ (872)
Weighted-average number of shares of common stock outstanding - basic (in shares)	590.8	588.3	590.3	587.7
Dilutive effect of equity awards (in shares)	3.7	0.0	2.3	0.0
Weighted-average number of shares of common stock outstanding - diluted	594.5	588.3	592.6	587.7
Net income (loss) attributable to News Corporation stockholders per share, basic and diluted (in dollars per share)	$ 0.13	$ (1.24)	$ 0.58	$ (1.48)