Carrying Amount of Goodwill (Detail) $ in Millions	6 Months Ended
Dec. 31, 2017 USD ($)
Goodwill [Line Items]
Beginning Balance	$ 35,122
Acquisitions	125
Other	108
Ending Balance	35,355
Productivity and Business Processes
Goodwill [Line Items]
Beginning Balance	23,739
Acquisitions	0
Other	31
Ending Balance	23,770
Intelligent Cloud
Goodwill [Line Items]
Beginning Balance	5,555
Acquisitions	68
Other	6
Ending Balance	5,629
More Personal Computing
Goodwill [Line Items]
Beginning Balance	5,828
Acquisitions	57
Other	71
Ending Balance	$ 5,956

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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