Commitments and Contingencies - Schedule of Commitments by Fiscal Year Maturity (Parenthetical) (Detail) - USD ($) $ in Millions		12 Months Ended
	Apr. 18, 2018	Jun. 30, 2018
Commitments and Contingencies [Line Items]
Rights payable period		2024
Operating leases, expected payment period		2062
Subleases from 21st Century Fox		$ 175
Transponder commitment date		2029
Cricket Australia [Member] | Contractual Rights [Member] | New Foxtel [Member]
Commitments and Contingencies [Line Items]
Rights payable period	6 years
Commitment Period Description	In April 2018, new Foxtel entered into a sports programming rights agreement with Cricket Australia to broadcast domestic cricket for a six year period from 2018 to 2024