Unearned Revenue by Segment (Detail) - USD ($) $ in Millions		Mar. 31, 2017	Jun. 30, 2016
Deferred Revenue Arrangement [Line Items]
Unearned revenue		$ 35,733	$ 33,909
Reportable Segments | Productivity and Business Processes
Deferred Revenue Arrangement [Line Items]
Unearned revenue		11,159	12,497
Reportable Segments | Intelligent Cloud
Deferred Revenue Arrangement [Line Items]
Unearned revenue		9,722	11,472
Reportable Segments | More Personal Computing
Deferred Revenue Arrangement [Line Items]
Unearned revenue		2,930	3,334
Corporate and Other
Deferred Revenue Arrangement [Line Items]
Unearned revenue	[1]	$ 11,922	$ 6,606

[1] Consists of the net revenue deferral from Windows 10.