Financial Instruments and Fair Value Measurements - Additional Information (Details) $ in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2024 AUD ($)	Jun. 30, 2024 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimates of net derivative gains related to cash flow hedges included in Accumulated other comprehensive loss					$ 0
Cross Currency Interest Rate Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative gain, net	$ 5
Estimates of net derivative gains related to cash flow hedges included in Accumulated other comprehensive loss					0
Cross Currency Interest Rate Derivatives | Other, Net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain from discontinued cash flow hedges	3	$ 4	$ 25
Cross Currency Interest Rate Derivatives | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative					49
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative gain, net	$ 7
Estimates of net derivative gains related to cash flow hedges included in Accumulated other comprehensive loss					15
Interest Rate Contract | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative					484
Foreign Exchange Contract | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative notional amount					$ 79
Foxtel | Cash Flow Hedging | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative interest rate				4.248%	4.248%
Foxtel | Cash Flow Hedging | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative interest rate				4.338%	4.338%
Foxtel | Cross Currency Interest Rate Derivatives | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative					$ 49
Derivative interest rate				4.375%	4.375%
Foxtel | Interest Rate Swap | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative				$ 610
Foxtel | Interest Rate Contract | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative				$ 610