Revenue Classified by Major Geographic Areas (Detail) - USD ($) $ in Millions		3 Months Ended												12 Months Ended
		Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2016
Geographic Information [Line Items]
Revenues		$ 30,085	$ 26,819	$ 28,918	$ 24,538	$ 25,605		$ 23,212		$ 25,826		$ 21,928		$ 110,360	$ 96,571	[1]	$ 91,154
United States
Geographic Information [Line Items]
Revenues	[2]													55,926	51,078		46,416
Other Countries
Geographic Information [Line Items]
Revenues														$ 54,434	$ 45,493		$ 44,738

[1] On December 8, 2016, we acquired LinkedIn Corporation. LinkedIn has been included in our consolidated results of operations starting on the acquisition date.

[2] 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.