Investments - Schedule of (Losses) Earnings of Equity Affiliates (Parenthetical) (Detail) - Foxtel [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Investments written-off	$ 227		$ 227
Equity (Losses) Earnings of Affiliates [Member]
Schedule of Equity Method Investments [Line Items]
Amortization of excess basis allocated to finite-lived intangible assets	$ 18	$ 13	$ 37	$ 25