Borrowings - Schedule of Borrowings (Detail) $ in Millions, $ in Millions		Sep. 30, 2021 USD ($)	Sep. 30, 2021 AUD ($)	Jun. 30, 2021 USD ($)
Debt and Financial Instruments [Line Items]
Total borrowings		$ 2,264		$ 2,313
Finance lease and other liabilities		89		100
Less: current portion	[1]	(300)		(28)
Long-term borrowings		1,964		2,285
Finance lease liabilities, current		27		28
Credit facility 2019 | Foxtel
Debt and Financial Instruments [Line Items]
Total borrowings		$ 218		232
Interest rate		2.32%	2.32%
Term loan facility 2019 | Foxtel
Debt and Financial Instruments [Line Items]
Total borrowings		$ 181		190
Interest rate		6.25%	6.25%
Working Capital Facility 2017 | Foxtel
Debt and Financial Instruments [Line Items]
Debt instrument unused borrowing capacity			$ 339
Working Capital Facility 2017 | New Foxtel
Debt and Financial Instruments [Line Items]
Total borrowings		$ 0		0
Interest rate		2.32%	2.32%
Telstra Facility | Foxtel
Debt and Financial Instruments [Line Items]
Total borrowings		$ 68		60
Interest rate		7.82%	7.82%
US Private Placement 2012 - USD Portion -Tranche 2 | New Foxtel
Debt and Financial Instruments [Line Items]
Total borrowings		$ 199		202
Interest rate		4.27%	4.27%
US Private Placement 2012 - USD Portion -Tranche 3 | New Foxtel
Debt and Financial Instruments [Line Items]
Total borrowings		$ 150		152
Interest rate		4.42%	4.42%
US Private Placement 2012 - AUD Portion | New Foxtel
Debt and Financial Instruments [Line Items]
Total borrowings		$ 74		78
Interest rate		7.04%	7.04%
Bridge Facility 2021 | REA Group
Debt and Financial Instruments [Line Items]
Total borrowings		$ 0		314
Interest rate		0.00%	0.00%
2022 Credit Facility | REA Group
Debt and Financial Instruments [Line Items]
Debt instrument unused borrowing capacity			$ 187
2022 Credit facility — tranche 1 | REA Group
Debt and Financial Instruments [Line Items]
Total borrowings		$ 290		0
Interest rate		1.06%	1.06%
2022 Credit facility — tranche 2 | REA Group
Debt and Financial Instruments [Line Items]
Total borrowings		$ 9		0
Interest rate		1.21%	1.21%
2021 Senior notes
Debt and Financial Instruments [Line Items]
Total borrowings		$ 986		$ 985
Interest rate		3.875%	3.875%

[1] The Company classifies the current portion of long term debt as non-current liabilities on the Balance Sheets when it has the intent and ability to refinance the obligation on a long-term basis, in accordance with ASC 470-50 “Debt.” $27 million and $28 million relates to the current portion of finance lease liabilities as of September 30, 2021 and June 30, 2021, respectively.