Revenue Classified by Major Geographic Areas (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Geographic Information [Line Items]
Revenues		$ 30,571	$ 26,819	$ 92,126	$ 80,275
United States
Geographic Information [Line Items]
Revenues	[1]	15,372	13,457	46,899	41,094
Other Countries
Geographic Information [Line Items]
Revenues		$ 15,199	$ 13,362	$ 45,227	$ 39,181

[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.