Financial Instruments and Fair Value Measurements - Summary of Derivative Instruments Designated as Cash Flow Hedges (Detail) - Cash Flow Hedging - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) recognized in Accumulated Other Comprehensive Loss	$ (1)	$ (13)	$ (16)	$ (13)
(Gain) loss reclassified from Accumulated Other Comprehensive Loss	1	13	15	(4)
Foreign currency derivatives | Operating expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) recognized in Accumulated Other Comprehensive Loss	0	(1)	0	(2)
(Gain) loss reclassified from Accumulated Other Comprehensive Loss	(1)	0	(1)	(2)
Cross currency interest rate derivatives | Interest expense, net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) recognized in Accumulated Other Comprehensive Loss	0	(13)	(15)	(8)
(Gain) loss reclassified from Accumulated Other Comprehensive Loss	0	12	13	3
Interest rate derivatives | Interest expense, net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) recognized in Accumulated Other Comprehensive Loss	(1)	1	(1)	(3)
(Gain) loss reclassified from Accumulated Other Comprehensive Loss	$ 2	$ 1	$ 3	$ (5)