Operating Income (Loss) by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Operating income (loss)	$ 8,292	$ 6,723	$ 24,679	$ 21,343
Productivity and Business Processes
Segment Reporting Information [Line Items]
Operating income (loss)	3,115	2,540	9,458	8,498
Intelligent Cloud
Segment Reporting Information [Line Items]
Operating income (loss)	2,654	2,148	7,623	6,216
More Personal Computing
Segment Reporting Information [Line Items]
Operating income (loss)	$ 2,523	$ 2,035	$ 7,598	$ 6,629