Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Loss Contingencies [Line Items]
Other current assets	$ 393	$ 515
U.K. Newspaper Matters
Loss Contingencies [Line Items]
Selling, general and administrative expenses (benefit), net	8	$ 10	$ (35)
Litigation liability accrued	64
Impact due to reversal of previous accrued liability due to settlement with tax authority	5		$ (46)
U.K. Newspaper Matters Indemnification | 21st Century Fox
Loss Contingencies [Line Items]
Other current assets	$ 66