Corporate and Other Operating Income (Loss) Activity (Parenthetical) (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)		$ 6,026	$ 7,776	$ 11,819	$ 13,620
Corporate and Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)		(1,897)	83	(3,160)	(1,087)
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]	(1,897)	326	(3,160)	296
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)		1,700		3,000
Halo 5 | 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)		$ 191		$ 191
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)			$ 326		$ 297

[1] Revenue reconciling amounts and other for the three months ended December 31, 2015 included a net $1.7 billion of revenue deferrals related to sales of Windows 10 and a net $191 million of revenue deferrals related to Halo 5. Revenue reconciling amounts and other for the three months ended December 31, 2014 included the net recognition of $326 million of previously deferred revenue related to sales of bundled products and services ("Bundled Offerings"). Revenue reconciling amounts and other for the six months ended December 31, 2015 included a net $3.0 billion of revenue deferrals related to sales of Windows 10 and a net $191 million of revenue deferrals related to Halo 5. Revenue reconciling amounts and other for the six months ended December 31, 2014 included the net recognition of $297 million of previously deferred revenue related to Bundled Offerings.