Financial Instruments and Fair Value Measurements - Summary of Hedges Classified as Current or Non-Current in Balance Sheets Based on Maturity Dates (Detail) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022
Interest Rate Derivatives | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, reported under other current assets	$ 21	$ 4
Derivatives, reported under other non-current assets	20	20
Foreign Currency Derivatives | Cash Flow Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, reported under other current assets	2	1
Cross Currency Interest Rate Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, reported under other current assets	1	46
Derivatives, reported under other non-current assets	36	33
Derivatives, reported under other current liability	(2)	0
Cross Currency Interest Rate Derivatives | Fair Value Hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, reported under other current assets	0	11
Derivatives, reported under other non-current assets	9	8
Derivatives, reported under other current liability	$ (1)	$ 0