Revenue Classified by Significant Product and Service Offerings (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Revenue from External Customer [Line Items]
Revenue	$ 29,084	$ 24,538
Office Products and Cloud Services
Revenue from External Customer [Line Items]
Revenue	7,622	6,575
Server Products and Cloud Services
Revenue from External Customer [Line Items]
Revenue	7,058	5,496
Windows
Revenue from External Customer [Line Items]
Revenue	4,901	4,643
Gaming
Revenue from External Customer [Line Items]
Revenue	2,738	1,896
Search Advertising
Revenue from External Customer [Line Items]
Revenue	1,788	1,639
LinkedIn
Revenue from External Customer [Line Items]
Revenue	1,530	1,148
Enterprise Services
Revenue from External Customer [Line Items]
Revenue	1,450	1,371
Devices
Revenue from External Customer [Line Items]
Revenue	1,261	1,154
Other products and services
Revenue from External Customer [Line Items]
Revenue	$ 736	$ 616