Borrowings - Additional Information (Detail)		12 Months Ended
	Aug. 11, 2023 AUD ($) facility	Jun. 30, 2023 AUD ($) extension	Aug. 11, 2023 USD ($) facility	Jun. 30, 2023 USD ($) extension
Foxtel
Debt Instrument [Line Items]
Operating income leverage ratio		325.00%
New Foxtel | Maximum
Debt Instrument [Line Items]
Unused capacity commitment fee percentage		45.00%
Australian BBSY | Minimum
Debt Instrument [Line Items]
Interest rate margin		2.00%
Australian BBSY | Maximum
Debt Instrument [Line Items]
Interest rate margin		3.25%
Revolving Credit Facility
Debt Instrument [Line Items]
Face amount of debt				$ 750,000,000
2019 Term loan facility | Foxtel
Debt Instrument [Line Items]
Interest rate		6.25%		6.25%
2019 Term loan facility | Foxtel
Debt Instrument [Line Items]
Proceeds from long-term lines of credit		$ 250,000,000
Interest coverage ratio		350.00%
Telstra facility | Foxtel
Debt Instrument [Line Items]
Telstras ownership percentage of Foxtel		35.00%
Telstra facility | Australian BBSY | Foxtel
Debt Instrument [Line Items]
Interest rate margin		7.75%
Unsecured revolving credit facility available amount		$ 170,000,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum amount of credit facility				$ 750,000,000
Unused capacity commitment fee percentage		0.225%
Line of Credit | Revolving Credit Facility | Foxtel | Subsequent Event
Debt Instrument [Line Items]
Maximum amount of credit facility	$ 1,200,000,000
Line of Credit | Term Loan A Credit Facility
Debt Instrument [Line Items]
Maximum amount of credit facility				$ 500,000,000
Amortization percentage, tranche one		0.00%		0.00%
Amortization percentage, tranche two		2.50%		2.50%
Amortization percentage, tranche three		2.50%		2.50%
Amortization percentage, tranche four		5.00%		5.00%
Amortization percentage, tranche five		5.00%		5.00%
Extension term		1 year
Number of extension options | extension		2		2
Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Maximum amount of credit facility				$ 100,000,000
Line of Credit | 2022 Credit Agreement
Debt Instrument [Line Items]
Increase to maximum borrowing capacity				250,000,000
Operating income leverage ratio		300.00%
Interest coverage ratio		300.00%
Line of Credit | 2022 Credit Agreement | Base Rate
Debt Instrument [Line Items]
Interest rate margin		0.50%
Line of Credit | 2022 Credit Agreement | Relevant Rate
Debt Instrument [Line Items]
Interest rate margin		1.50%
Line of Credit | 2019 Term loan facility | Foxtel | Subsequent Event
Debt Instrument [Line Items]
Maximum amount of credit facility	250,000,000
Term A Loan | Senior Notes
Debt Instrument [Line Items]
Face amount of debt				1,978,000,000
2021 Senior notes | Senior Notes
Debt Instrument [Line Items]
Face amount of debt				$ 1,978,000,000
Interest rate		3.875%		3.875%
2022 Senior notes | Senior Notes
Debt Instrument [Line Items]
Face amount of debt				$ 1,978,000,000
Percentage of principal amount that may be redeemed upon change in control		101.00%		101.00%
Interest rate		5.125%		5.125%
2019 Credit Facility | Foxtel
Debt Instrument [Line Items]
Maximum amount of credit facility		$ 610,000,000
Interest rate		6.65%		6.65%
2019 Credit Facility | Line of Credit | Foxtel | Subsequent Event
Debt Instrument [Line Items]
Maximum amount of credit facility	610,000,000
2017 Working Capital Facility | Foxtel
Debt Instrument [Line Items]
Maximum amount of credit facility		$ 40,000,000
2017 Working Capital Facility | New Foxtel
Debt Instrument [Line Items]
Interest rate		6.65%		6.65%
2022 Credit Facilities | REA Group
Debt Instrument [Line Items]
Maximum amount of credit facility				$ 211,000,000
Unused capacity commitment fee percentage		40.00%
Operating income leverage ratio		350.00%
Interest coverage ratio		300.00%
Credit Facility 2022 | REA Group
Debt Instrument [Line Items]
Amount of unused borrowing capacity		$ 281,000,000
2022 Credit Facility - Tranche 2 | REA Group
Debt Instrument [Line Items]
Increase to maximum borrowing capacity		$ 500,000,000
Interest rate		5.50%		5.50%
2022 Credit Facility - Tranche 2 | Australian BBSY | REA Group | Minimum
Debt Instrument [Line Items]
Interest rate margin		1.15%
2022 Credit Facility - Tranche 2 | Australian BBSY | REA Group | Maximum
Debt Instrument [Line Items]
Interest rate margin		2.25%
2022 Credit Facility - Tranche 1 | REA Group
Debt Instrument [Line Items]
Interest rate		5.35%		5.35%
2022 Credit Facility - Tranche 1 | Australian BBSY | REA Group | Minimum
Debt Instrument [Line Items]
Interest rate margin		1.00%
2022 Credit Facility - Tranche 1 | Australian BBSY | REA Group | Maximum
Debt Instrument [Line Items]
Interest rate margin		2.10%
2023 Credit Facility - Tranche 1 | Line of Credit | Foxtel | Subsequent Event
Debt Instrument [Line Items]
Maximum amount of credit facility	$ 817,500,000
Unused capacity commitment fee percentage	45.00%
Number of facilities | facility	3		3
Debt instrument term	3 years
2023 Credit Facility - Tranche 1 | Line of Credit | Australian BBSY | Foxtel | Minimum | Subsequent Event
Debt Instrument [Line Items]
Interest rate margin	2.35%
2023 Credit Facility - Tranche 1 | Line of Credit | Australian BBSY | Foxtel | Maximum | Subsequent Event
Debt Instrument [Line Items]
Interest rate margin	3.60%
2023 Credit Facility - Tranche 2 | Line of Credit | Foxtel | Subsequent Event
Debt Instrument [Line Items]
Maximum amount of credit facility			$ 48,700,000
Debt instrument term	4 years
Annual amortization amount, period one	$ 35,000,000
Annual amortization amount, period two	$ 40,000,000
2023 Credit Facility - Tranche 2 | Line of Credit | SOFR | Foxtel | Minimum | Subsequent Event
Debt Instrument [Line Items]
Interest rate margin	2.50%
2023 Credit Facility - Tranche 2 | Line of Credit | SOFR | Foxtel | Maximum | Subsequent Event
Debt Instrument [Line Items]
Interest rate margin	3.75%
2023 Credit Facility - Tranche 3 | Line of Credit | Foxtel | Subsequent Event
Debt Instrument [Line Items]
Maximum amount of credit facility	$ 311,000,000
Debt instrument term	4 years
Annual amortization amount, period one	$ 35,000,000
Annual amortization amount, period two	$ 40,000,000
2023 Credit Facility - Tranche 3 | Line of Credit | Australian BBSY | Foxtel | Minimum | Subsequent Event
Debt Instrument [Line Items]
Interest rate margin	2.50%
2023 Credit Facility - Tranche 3 | Line of Credit | Australian BBSY | Foxtel | Maximum | Subsequent Event
Debt Instrument [Line Items]
Interest rate margin	3.75%