Segment Revenue (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
Segment Reporting Information [Line Items]
Revenue	$ 30,085	$ 26,819	$ 28,918	$ 24,538	$ 25,605		$ 23,212		$ 25,826		$ 21,928		$ 110,360	$ 96,571	[1]	$ 91,154
Productivity and Business Processes
Segment Reporting Information [Line Items]
Revenue													35,865	29,870		25,792
Intelligent Cloud
Segment Reporting Information [Line Items]
Revenue													32,219	27,407		24,952
More Personal Computing
Segment Reporting Information [Line Items]
Revenue													$ 42,276	$ 39,294		$ 40,410

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