Corporate and Other Operating Income (Loss) Activity (Parenthetical) (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Operating income (loss) $ 5,283 $ 6,594 $ 17,102 $ 20,214
Corporate and Other        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Operating income (loss) (1,544) (192) (4,705) (1,279)
Revenue reconciling amounts and other | Corporate and Other        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Operating income (loss) [1] (1,544) $ (2) (4,705) 294
Windows 10 Licenses | Revenue reconciling amounts and other | Corporate and Other        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Operating income (loss) $ 1,600   $ 4,600  
Bundled Offerings | Revenue reconciling amounts and other | Corporate and Other        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Operating income (loss)       $ 296
[1] Revenue reconciling amounts and other for the three months ended March 31, 2016 primarily consisted of a net $1.6 billion of revenue deferrals related to sales of Windows 10. Revenue reconciling amounts and other for the nine months ended March 31, 2016 primarily consisted of a net $4.6 billion of revenue deferrals related to sales of Windows 10. Revenue reconciling amounts and other for the nine months ended March 31, 2015 included the net recognition of $296 million of previously deferred revenue related to bundled products and services.