Operating Income (Loss) by Segment (Detail) - USD ($) $ in Millions	3 Months Ended												12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	[1],[2]	Mar. 31, 2017	[2]	Dec. 31, 2016	[2]	Sep. 30, 2016	[2]	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2016
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 10,379	$ 8,292	$ 8,679	$ 7,708	$ 7,682		$ 6,723		$ 7,905		$ 6,715		$ 35,058	$ 29,025	[1],[2]	$ 26,078
Reportable Segments | Productivity and Business Processes
Segment Reporting Information [Line Items]
Operating Income (Loss)													12,924	11,389		11,756
Reportable Segments | Intelligent Cloud
Segment Reporting Information [Line Items]
Operating Income (Loss)													11,524	9,127		9,249
Reportable Segments | More Personal Computing
Segment Reporting Information [Line Items]
Operating Income (Loss)													10,610	8,815		6,183
Corporate and Other
Segment Reporting Information [Line Items]
Operating Income (Loss)													$ 0	$ (306)		$ (1,110)

[1] Includes $306 million of employee severance expenses primarily related to our sales and marketing restructuring plan, which decreased operating income, net income, and diluted EPS by $306 million, $243 million, and $0.04, respectively.

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