Components of Other Income (Expense), Net (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Other Income And Expenses [Abstract]
Interest and dividends income	$ 673	$ 668	$ 2,085	$ 2,053
Interest expense	(614)	(671)	(1,905)	(2,017)
Net recognized gains (losses) on investments	(101)	44	4	381
Net gains on derivatives	49	51	136	89
Net gains (losses) on foreign currency remeasurements	(136)	37	(218)	(32)
Other, net	(3)	16	(40)	64
Total	$ (132)	$ 145	$ 62	$ 538