Borrowings - Schedule of Borrowings (Detail) - USD ($) $ in Millions		12 Months Ended
		Jun. 30, 2019	Jun. 30, 2018
Debt and Financial Instruments [Line Items]
Total borrowings		$ 1,453	$ 1,952
Less: current portion		(449)	(462)
Long-term borrowings		$ 1,004	1,490
New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Due date	[1],[2]	May 30, 2019
REA Group Inc [Member]
Debt and Financial Instruments [Line Items]
Due date	[3],[4]	Apr. 27, 2021
Credit Facility 2013 [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[1],[2]		222
Due date	[1],[2]	Apr. 07, 2019
Credit Facility 2014 Tranche 1 [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[1],[2]		148
Working Capital Facility 2017 [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[1],[5]	$ 56	59
Interest rate	[1],[5]	3.47%
Due date	[1],[5]	Jul. 03, 2020
Credit Facility 2014 Tranche 2 [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[1]	$ 56	148
Interest rate	[1]	3.07%
Due date	[1]	Jan. 31, 2020
Credit Facility 2015 [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[1]	$ 281	296
Interest rate	[1]	3.32%
Due date	[1]	Jul. 31, 2020
Credit Facility 2016 [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[1],[5]	$ 193	108
Interest rate	[1],[5]	3.81%
Due date	[1],[5]	Sep. 11, 2021
US Private Placement 2009 Tranche 3 [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings		$ 75	75
Interest rate		6.20%
Due date		Sep. 24, 2019
US Private Placement 2012 USD Portion Tranche 1 [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[6]	$ 150	150
Interest rate	[6]	3.68%
Due date	[6]	Jul. 25, 2019
US Private Placement 2012 USD Portion Tranche 2 [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[6]	$ 199	196
Interest rate	[6]	4.27%
Due date	[6]	Jul. 25, 2022
US Private Placement 2012 USD Portion Tranche 3 [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[6]	$ 149	146
Interest rate	[6]	4.42%
Due date	[6]	Jul. 25, 2024
US Private Placement 2012 AUD Portion [Member] | New Foxtel [Member]
Debt and Financial Instruments [Line Items]
Total borrowings		$ 77	83
Interest rate		7.04%
Due date		Jul. 25, 2022
Credit Facility Fiscal 2016 Tranche 2 [Member] | REA Group Inc [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[3],[4]		89
Due date	[3],[4]	Dec. 31, 2018
Credit Facility Fiscal 2016 Tranche 3 [Member] | REA Group Inc [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[3],[4]	$ 168	178
Interest rate	[3],[4]	2.97%
Due date	[3],[4]	Dec. 31, 2019
Credit Facility Fiscal 2018 [Member] | REA Group Inc [Member]
Debt and Financial Instruments [Line Items]
Total borrowings	[3],[4]	$ 49	$ 54
Interest rate	[3],[4]	2.73%

[1] Borrowings under these facilities bear interest at a floating rate of Australian BBSY plus an applicable margin of between 1.20% and 2.70% per annum payable quarterly.

[2] During the fiscal year ended June 30, 2019, the Foxtel Group repaid its A$300 million (approximately $216 million) facility maturing in April 2019 and tranche 1 of its A$200 million (approximately $139 million) facility maturing in May 2019 using A$500 million of shareholder loans provided by the Company.

[3] Borrowings under these facilities bear interest at a floating rate of the Australian BBSY plus a margin in the range of 0.85% and 1.45% depending on REA Group’s net leverage ratio. As of June 30, 2019, REA Group was paying a margin of between 0.85% and 1.05%.

[4] During the fiscal year ended June 30, 2019, REA Group repaid $87 million (A$120 million) for its unsecured loan facility due December 2018. REA Group had remaining borrowings of $217 million, of which approximately $168 million (A$240 million) will mature in fiscal 2020.

[5] As of June 30, 2019, the Foxtel Group has undrawn commitments of $181 million under these facilities for which it pays a commitment fee in the range of 40% and 45% of the applicable margin.

[6] The carrying values of the borrowings include any fair value adjustments related to the Company’s fair value hedges. See Note 11—Financial Instruments and Fair Value Measurements.