Revenue Classified by Major Geographic Areas (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues		$ 35,021	$ 30,571	$ 104,982	$ 92,126
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	[1]	17,428	15,372	53,847	46,899
Other Countries
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues		$ 17,593	$ 15,199	$ 51,135	$ 45,227

[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.