Investments - Schedule of Investments (Parenthetical) (Detail) In Millions, unless otherwise specified	6 Months Ended						1 Months Ended
	Dec. 31, 2014 Foxtel Shareholder Notes [Member]	Dec. 31, 2014 Loan Receivable from Foxtel [Member] USD ($)		Dec. 31, 2014 Loan Receivable from Foxtel [Member] AUD	Jun. 30, 2014 Loan Receivable from Foxtel [Member] USD ($)		Nov. 30, 2014 SEEK Asia Limited [Member] USD ($)	Dec. 31, 2014 iProperty Group Limited [Member] USD ($)	Oct. 31, 2014 iProperty Group Limited [Member]	Jul. 31, 2014 iProperty Group Limited [Member] USD ($)
Schedule of Investments [Line Items]
Ownership interest percentage on investment							12.10%		19.90%	17.22%
Equity method investment, cash consideration paid										$ 100
Additional ownership interest percentage on investment								2.20%
Carrying value of investment								96
Other investments		366	[1]	451	425	[1]
Earliest date subordinated note can be repaid	Jul. 01, 2022
Maturity date of subordinated note	Jul. 15, 2027
Percentage of interest payable on subordinated note	12.00%
Other investments, amount							$ 60

[1] In May 2012, Foxtel purchased Austar United Communications Ltd. The transaction was funded by Foxtel bank debt and Foxtel's shareholders made pro rata capital contributions in the form of subordinated shareholder notes based on their respective ownership interests. The Company's share of the subordinated shareholder notes was approximately A$451 million ($366 million and $425 million as of December 31, 2014 and June 30, 2014, respectively). The subordinated shareholder note can be repaid beginning in July 2022 provided that Foxtel's senior debt has been repaid. The subordinated shareholder note has a maturity date of July 15, 2027, with interest of 12% payable on June 30 each year and at maturity. Upon maturity, the principal advanced will be repayable.