Revenues - Summary of Deferred Revenue from Contract with Customers (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Deferred Revenue [Abstract]
Balance—beginning of period	$ 428	$ 510
Deferral of revenue	821	595
Recognition of deferred revenue	(794)	(670)
Other	(7)	1
Balance—end of period	$ 448	$ 436