Income Taxes - Schedule of (Loss) Income from Continuing Operations Before Income Tax Expense (Benefit) Attributable to Jurisdictions (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
U.S.	$ (310)	$ 99	$ (55)
Foreign	(1,214)	255	(1,034)
(Loss) income before income tax expense	$ (1,524)	$ 354	$ (1,089)