Revenue Classified by Significant Product and Service Offerings (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Revenue from External Customer [Line Items]
Revenue	$ 24,538	$ 21,928
Office Products and Cloud Services
Revenue from External Customer [Line Items]
Revenue	6,575	5,982
Server Products and Cloud Services
Revenue from External Customer [Line Items]
Revenue	5,496	4,689
Windows
Revenue from External Customer [Line Items]
Revenue	4,643	4,643
Gaming
Revenue from External Customer [Line Items]
Revenue	1,896	1,885
Search Advertising
Revenue from External Customer [Line Items]
Revenue	1,639	1,429
Enterprise Services
Revenue from External Customer [Line Items]
Revenue	1,371	1,355
Devices
Revenue from External Customer [Line Items]
Revenue	1,154	1,362
LinkedIn
Revenue from External Customer [Line Items]
Revenue	1,148	0
Other products and services
Revenue from External Customer [Line Items]
Revenue	$ 616	$ 583