UNAUDITED COMBINED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 24	$ 882	$ 639	$ 1,282
Other comprehensive income, net of tax
Unrealized holding gains on securities		0	96	0	177
Benefit plan adjustments		2	2	3	3
Other comprehensive income, net of tax		2	98	3	180
Comprehensive income		26	980	642	1,462
Less: Net income attributable to noncontrolling interests	[1]	(16)	(13)	(27)	(23)
Comprehensive income attributable to Fox Corporation		$ 10	$ 967	$ 615	$ 1,439

[1] Net income attributable to noncontrolling interests includes $10 million and $13 million for the three months ended December 31, 2018 and 2017, respectively, and $21 million and $23 million for the six months ended December 31, 2018 and 2017, respectively, relating to redeemable noncontrolling interests.