Impacts of Adoption of Standards Related to Revenue Recognition and Leases to Previously Reported Results - (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Jul. 01, 2016
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Revenue	$ 24,538	$ 21,928
Provision for income taxes	1,408	1,160
Net income	$ 6,576	$ 5,667
Diluted earnings per share	$ 0.84	$ 0.72
Balance Sheets
Accounts receivable, net of allowance for doubtful accounts	$ 14,561		$ 22,431
Operating lease right-of-use assets	6,844		6,555
Other current and long-term assets			11,179
Unearned revenue	24,904		26,656	$ 22,200
Deferred income taxes	5,513		5,734
Operating lease liabilities	5,768		5,372
Other current and long-term liabilities			24,621
Stockholders' equity	$ 89,647	$ 82,462	87,711
As Previously Reported
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Revenue		20,453
Provision for income taxes		635
Net income		$ 4,690
Diluted earnings per share		$ 0.60
Balance Sheets
Accounts receivable, net of allowance for doubtful accounts			19,792
Operating lease right-of-use assets			0
Other current and long-term assets			11,147
Unearned revenue			44,479
Deferred income taxes			531
Operating lease liabilities			0
Other current and long-term liabilities			23,464
Stockholders' equity			72,394
New Revenue Standard Adjustment | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Revenue		$ 1,475
Provision for income taxes		525
Net income		$ 977
Diluted earnings per share		$ 0.12
Balance Sheets
Accounts receivable, net of allowance for doubtful accounts			2,639
Operating lease right-of-use assets			0
Other current and long-term assets			32
Unearned revenue			(17,823)
Deferred income taxes			5,203
Operating lease liabilities			0
Other current and long-term liabilities			(26)
Stockholders' equity			15,317
New Lease Standard Adjustment | Restatement Adjustment
Balance Sheets
Accounts receivable, net of allowance for doubtful accounts			0
Operating lease right-of-use assets			6,555
Other current and long-term assets			0
Unearned revenue			0
Deferred income taxes			0
Operating lease liabilities			5,372
Other current and long-term liabilities			1,183
Stockholders' equity			$ 0