Unearned Revenue by Segment (Detail) - USD ($) $ in Millions	Sep. 30, 2015	Jun. 30, 2015
Deferred Revenue Arrangement [Line Items]
Unearned revenue	$ 24,387	$ 25,318
Reportable Segments \| Productivity and Business Processes
Deferred Revenue Arrangement [Line Items]
Unearned revenue	10,719	11,643
Reportable Segments \| Intelligent Cloud
Deferred Revenue Arrangement [Line Items]
Unearned revenue	9,291	10,346
Reportable Segments \| More Personal Computing
Deferred Revenue Arrangement [Line Items]
Unearned revenue	3,035	3,246
Corporate and Other
Deferred Revenue Arrangement [Line Items]
Unearned revenue	$ 1,342	$ 83

Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response)

-URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A

Name:	us-gaap_DeferredRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant