Expected Impacts of Adoption of Standards Related to Revenue Recognition and Leases to Reported Results - (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended																12 Months Ended
	Jun. 30, 2017		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
Income statements:
Revenue	$ 23,317	[1],[2]	$ 22,090	[2]	$ 24,090	[2]	$ 20,453	[2]	$ 20,614	[3]	$ 20,531	[3]	$ 23,796	[3]	$ 20,379	[3]	$ 89,950	[1],[2]	$ 85,320	[3]	$ 93,580
Provision for income taxes																	1,945		2,953		6,314
Net income	$ 6,513	[1],[4]	$ 4,801		$ 5,200		$ 4,690		$ 3,122	[5]	$ 3,756		$ 5,018		$ 4,902		$ 21,204	[1],[4]	$ 16,798	[5]	$ 12,193
Diluted	$ 0.83	[1],[4]	$ 0.61		$ 0.66		$ 0.60		$ 0.39	[5]	$ 0.47		$ 0.62		$ 0.61		$ 2.71	[1],[4]	$ 2.10	[5]	$ 1.48
Balance sheets:
Accounts receivable, net	$ 19,792								$ 18,277								$ 19,792		$ 18,277
Operating lease right-of-use assets	0								0								0		0
Other current and long-term assets	11,147								9,308								11,147		9,308
Unearned revenue	44,479								33,909								44,479		33,909
Deferred income taxes	531								1,476								531		1,476
Operating lease liabilities	0								0								0		0
Other current and long-term liabilities	23,464								19,589								23,464		19,589
Stockholders' equity	72,394								71,997								72,394		71,997		$ 80,083
Scenario Plan
Income statements:
Revenue																	96,571		91,154
Provision for income taxes																	4,412		5,100
Net income																	$ 25,489		$ 20,539
Diluted																	$ 3.25		$ 2.56
Balance sheets:
Accounts receivable, net	22,431								20,636								$ 22,431		$ 20,636
Operating lease right-of-use assets	6,555								5,198								6,555		5,198
Other current and long-term assets	11,179								11,180								11,179		11,180
Unearned revenue	26,656								22,193								26,656		22,193
Deferred income taxes	5,734								6,313								5,734		6,313
Operating lease liabilities	5,372								4,257								5,372		4,257
Other current and long-term liabilities	24,621								20,547								24,621		20,547
Stockholders' equity	87,711								83,090								87,711		83,090
New Revenue Standard Adjustment | Scenario Plan
Income statements:
Revenue																	6,621		5,834
Provision for income taxes																	2,467		2,147
Net income																	$ 4,285		$ 3,741
Diluted																	$ 0.54		$ 0.46
Balance sheets:
Accounts receivable, net	2,639								2,359								$ 2,639		$ 2,359
Operating lease right-of-use assets	0								0								0		0
Other current and long-term assets	32								1,872								32		1,872
Unearned revenue	(17,823)								(11,716)								(17,823)		(11,716)
Deferred income taxes	5,203								4,837								5,203		4,837
Operating lease liabilities	0								0								0		0
Other current and long-term liabilities	(26)								17								(26)		17
Stockholders' equity	15,317								11,093								15,317		11,093
New Lease Standard Adjustment | Scenario Plan
Income statements:
Revenue																	0		0
Provision for income taxes																	0		0
Net income																	$ 0		$ 0
Diluted																	$ 0		$ 0
Balance sheets:
Accounts receivable, net	0								0								$ 0		$ 0
Operating lease right-of-use assets	6,555								5,198								6,555		5,198
Other current and long-term assets	0								0								0		0
Unearned revenue	0								0								0		0
Deferred income taxes	0								0								0		0
Operating lease liabilities	5,372								4,257								5,372		4,257
Other current and long-term liabilities	1,183								941								1,183		941
Stockholders' equity	$ 0								$ 0								$ 0		$ 0

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

[2] Reflects the impact of the net revenue deferral from Windows 10 of $1.9 billion, $2.0 billion, $1.5 billion, and $1.4 billion, for the first, second, third, and fourth quarter of fiscal year 2017, respectively, and $6.7 billion for fiscal year 2017.

[3] Reflects the impact of the net revenue deferral from Windows 10 of $1.3 billion, $1.7 billion, $1.6 billion, and $2.0 billion, for the first, second, third, and fourth quarter of fiscal year 2016, respectively, and $6.6 billion for fiscal year 2016.

[4] 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 $0.03, respectively.

[5] Includes $630 million of asset impairment charges related to our phone business, and $480 million of restructuring charges associated with our 2016 restructuring plans, which together decreased operating income, net income, and diluted EPS by $1.1 billion, $895 million, and $0.11, respectively.