Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Loss Contingencies [Line Items]
Other current assets	$ 387		$ 387		$ 393
U.K. Newspaper Matters
Loss Contingencies [Line Items]
Selling, general and administrative expenses, net	3	$ (1)	5	$ 1
Litigation liability accrued	47		47
Impact due to reversal of previous accrued liability due to settlement with tax authority		$ 5		$ 5
U.K. Newspaper Matters Indemnification | 21st Century Fox
Loss Contingencies [Line Items]
Other current assets	$ 54		$ 54