Accounting Policies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Jul. 01, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Significant Accounting Policies [Line Items]
Operating income		$ 69,916	$ 52,959	$ 42,959
Net income		$ 61,271	$ 44,281	$ 39,240
Income per basic share		$ 8.12	$ 5.82	$ 5.11
Income per diluted share		$ 8.05	$ 5.76	$ 5.06
Description of payment terms in contract with customer		Payment terms and conditions vary by contract type, although terms generally include a requirement of payment within 30 to 60 days.
Financing receivables, net		$ 4,400	$ 5,200
Other receivables due from suppliers		965	442
Long-term accounts receivable, net of allowance for doubtful accounts		3,400	2,700
Advertising expense		$ 1,500	$ 1,600	$ 1,600
Lower Limit
Significant Accounting Policies [Line Items]
Estimated useful lives of intangible assets		1 year
Upper Limit
Significant Accounting Policies [Line Items]
Estimated useful lives of intangible assets		20 years
Service Life
Significant Accounting Policies [Line Items]
Operating income		$ 2,700
Net income		$ 2,300
Income per basic share		$ 0.30
Income per diluted share		$ 0.30
Server Equipment | Service Life
Significant Accounting Policies [Line Items]
Estimated useful lives	4 years		3 years
Network Equipment | Service Life
Significant Accounting Policies [Line Items]
Estimated useful lives	4 years		2 years
Software | Lower Limit
Significant Accounting Policies [Line Items]
Estimated useful lives		3 years
Software | Upper Limit
Significant Accounting Policies [Line Items]
Estimated useful lives		7 years
Computer Equipment | Lower Limit
Significant Accounting Policies [Line Items]
Estimated useful lives		2 years
Computer Equipment | Upper Limit
Significant Accounting Policies [Line Items]
Estimated useful lives		4 years
Buildings and Improvements | Lower Limit
Significant Accounting Policies [Line Items]
Estimated useful lives		5 years
Buildings and Improvements | Upper Limit
Significant Accounting Policies [Line Items]
Estimated useful lives		15 years
Leasehold Improvements | Lower Limit
Significant Accounting Policies [Line Items]
Estimated useful lives		3 years
Leasehold Improvements | Upper Limit
Significant Accounting Policies [Line Items]
Estimated useful lives		20 years
Furniture and Fixtures | Lower Limit
Significant Accounting Policies [Line Items]
Estimated useful lives		1 year
Furniture and Fixtures | Upper Limit
Significant Accounting Policies [Line Items]
Estimated useful lives		10 years