Revenue Classified by Significant Product and Service Offerings (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Revenue from External Customer [Line Items]
Revenue	$ 30,571	$ 26,819	$ 92,126	$ 80,275
Office Products and Cloud Services
Revenue from External Customer [Line Items]
Revenue	7,889	7,088	23,258	20,739
Server Products and Cloud Services
Revenue from External Customer [Line Items]
Revenue	8,053	6,343	22,902	18,139
Windows
Revenue from External Customer [Line Items]
Revenue	4,944	4,612	14,603	14,094
Gaming
Revenue from External Customer [Line Items]
Revenue	2,363	2,251	9,333	8,067
Search Advertising
Revenue from External Customer [Line Items]
Revenue	1,911	1,784	5,675	5,243
LinkedIn
Revenue from External Customer [Line Items]
Revenue	1,696	1,335	4,919	3,795
Devices
Revenue from External Customer [Line Items]
Revenue	1,423	1,219	4,632	3,851
Enterprise Services
Revenue from External Customer [Line Items]
Revenue	1,542	1,489	4,513	4,295
Other
Revenue from External Customer [Line Items]
Revenue	$ 750	$ 698	$ 2,291	$ 2,052