Commitments and Contingencies - Schedule of Commitments by Fiscal Year Maturity (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Jun. 30, 2019 USD ($)
Commitments and Contingencies [Line Items]
Rights payable period	2024
Operating leases, expected payment period	2021
Subleases from 21st Century Fox	$ 45
Transponder Commitment Date	2029