Components of Other Income (Expense), Net (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Other Income And Expenses [Abstract]
Interest and dividends income	$ 519	$ 673	$ 1,634	$ 2,085
Interest expense	(633)	(614)	(1,793)	(1,905)
Net recognized gains (losses) on investments	353	(101)	837	4
Net gains (losses) on derivatives	(2)	49	(4)	136
Net gains (losses) on foreign currency remeasurements	(55)	(136)	126	(218)
Other, net	6	(3)	76	(40)
Total	$ 188	$ (132)	$ 876	$ 62