Financial Instruments and Fair Value Measurements - Additional Information (Details) $ in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2023 AUD ($)	Dec. 31, 2023 USD ($)
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 gain (loss) related to cash flow hedges included in AOCL						$ 0
Cross currency interest rate derivatives | Other , net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) from discontinued cash flow hedges	$ 0	$ (1)	3	$ 2
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 AOCL						13
Interest Rate Contract | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative						491
Interest Rate Contract | Cash Flow Hedging | Foxtel
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative					$ 610
Foreign Exchange Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimates of net derivative gain (loss) related to cash flow hedges included in AOCL						(1)
Foreign Exchange Contract | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional value of derivative						$ 63
Foreign Exchange Contract | Cash Flow Hedging | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term of contract			1 year
Foxtel | Cash Flow Hedging | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed interest rate of derivative					4.248%	4.248%
Foxtel | Cash Flow Hedging | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed interest rate of derivative					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]
Derivative asset, notional amount						$ 49
Fixed interest rate of derivative					4.375%	4.375%
Foxtel | Interest Rate Swap | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, notional amount					$ 610