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
	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net income (loss)	$ 47	$ (211)
Less: Net income attributable to noncontrolling interests	(13)	(16)
Net income (loss) attributable to News Corporation stockholders	$ 34	$ (227)
Weighted-average number of shares of common stock outstanding - basic (in shares)	589.5	586.7
Dilutive effect of equity awards (in shares)	1.3	0.0
Weighted-average number of shares of common stock outstanding - diluted	590.8	586.7
Net loss attributable to News Corporation stockholders per share - basic and diluted (in dollars per share)	$ 0.06	$ (0.39)