Corporate and Other Activity (Parenthetical) (Detail) - USD ($) $ in Millions		3 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)		$ 5,793	$ 5,844
Revenue reconciling amounts
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)	[1]	(1,278)	(44)
Windows 10 Licenses | Revenue reconciling amounts
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)		$ 1,300
Bundled Offerings | Revenue reconciling amounts
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)			$ 29

[1] Revenue reconciling amounts for the three months ended September 30, 2015, included a net $1.3 billion of revenue deferrals related to sales of Windows 10. Revenue reconciling amounts for the three months ended September 30, 2014 included a net $29 million of revenue deferrals related to sales of bundled products and services ("Bundled Offerings").