Revenue Classified by Major Geographic Areas (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues		$ 41,706	$ 35,021	$ 121,936	$ 104,982
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	[1]	20,373	17,428	61,234	53,847
Other Countries
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues		$ 21,333	$ 17,593	$ 60,702	$ 51,135

[1] Includes billings to OEMs and certain multinational organizations because of the nature of these businesses and the impracticability of determining the geographic source of the revenue.