Financial Instruments and Fair Value Measurements - Summary of Mandatorily Redeemable Noncontrolling Interest Liabilities Classified Level 3 (Detail) - Financial Instruments Subject To Mandatory Redemption Settlement Terms Share Value [Member] - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance - beginning of period	$ 12	$ 12
Payments	(11)	0
Accretion	0	1
Foreign exchange movements	0	(1)
Other	(1)	0
Balance - end of period	$ 0	$ 12