Financial Instruments and Fair Value Measurements - Summary of Hedges Classified as Current or Non-current in Balance Sheets Based on Maturity Dates (Details) - Cash Flow Hedging - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024
Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, reported under other current assets	$ 7	$ 15
Derivatives, reported under other non-current assets	7	14
Derivatives, reported under other current liability	1	0
Derivative Liability, Noncurrent	4	0
Cross currency interest rate derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, reported under other current liability	1	0
Derivative Liability, Noncurrent	3	2
Foreign Exchange Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, reported under other current liability	$ 2	$ 0