Financial Instruments and Fair Value Measurements - Summary of Derivative Instruments Designated as Cash Flow Hedges (Detail) - Cash Flow Hedging [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
(Gain) loss recognized in Accumulated Other Comprehensive Income	$ (31)	$ 0	$ (18)	$ 0
Gain (loss) reclassified from Accumulated Other Comprehensive Income	25	0	10	0
Foreign Currency Derivatives [Member] | Operating Expense [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
(Gain) loss recognized in Accumulated Other Comprehensive Income	(2)	0	(4)	0
Gain (loss) reclassified from Accumulated Other Comprehensive Income	1	0	2	0
Cross Currency Interest Rate Derivatives [Member] | Interest (Expense) Income, Net [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
(Gain) loss recognized in Accumulated Other Comprehensive Income	(30)	0	(16)	0
Gain (loss) reclassified from Accumulated Other Comprehensive Income	26	0	12	0
Interest Rate Contract [Member] | Interest (Expense) Income, Net [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
(Gain) loss recognized in Accumulated Other Comprehensive Income	1	0	2	0
Gain (loss) reclassified from Accumulated Other Comprehensive Income	$ (2)	$ 0	$ (4)	$ 0