Revenue Classified by Significant Product and Service Offerings (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Revenue from External Customer [Line Items]
Revenue	$ 35,021	$ 30,571	$ 104,982	$ 92,126
Server Products and Cloud Services
Revenue from External Customer [Line Items]
Revenue	10,490	8,053	29,801	22,902
Office Products and Cloud Services
Revenue from External Customer [Line Items]
Revenue	8,920	7,889	26,369	23,258
Windows
Revenue from External Customer [Line Items]
Revenue	5,220	4,944	16,166	14,603
Gaming
Revenue from External Customer [Line Items]
Revenue	2,349	2,363	8,218	9,333
Search Advertising
Revenue from External Customer [Line Items]
Revenue	1,986	1,911	6,140	5,675
LinkedIn
Revenue from External Customer [Line Items]
Revenue	2,050	1,696	6,061	4,919
Enterprise Services
Revenue from External Customer [Line Items]
Revenue	1,633	1,542	4,790	4,513
Devices
Revenue from External Customer [Line Items]
Revenue	1,412	1,423	4,662	4,632
Other
Revenue from External Customer [Line Items]
Revenue	$ 961	$ 750	$ 2,775	$ 2,291