Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Income Tax Contingency [Line Items]
Income tax expense (benefit), net	$ (21)	$ 50
Income before income tax benefit (loss)	(232)	178
Gross income tax paid	27	29
Income tax refunds	$ 3	$ 10