Corporate and Other Operating Income (Loss) Activity (Detail) - USD ($) $ in Millions	3 Months Ended												12 Months Ended
	Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017		Jun. 30, 2016	Jun. 30, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)	$ 5,330		$ 5,594		$ 6,177		$ 5,225		$ 3,080	$ 5,283	$ 6,026	$ 5,793	$ 22,326	[1]	$ 20,182	$ 18,161
Corporate and Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)													(7,013)		(7,753)	(10,011)
Corporate and Other | Net revenue deferral from Windows 10
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)													(6,707)		(6,643)	0
Corporate and Other | Impairment, integration, and restructuring expenses
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)													$ (306)		$ (1,110)	$ (10,011)

[1] On December 8, 2016, we acquired LinkedIn Corporation. LinkedIn has been included in our consolidated results of operations starting on the acquisition date.