Business Combinations - Additional Information (Detail) $ in Millions		12 Months Ended
Oct. 25, 2018 USD ($)	Jun. 30, 2020 USD ($) Acquisition
GitHub, Inc.
Business Acquisition [Line Items]
Acquisition date	Oct. 25, 2018
Total consideration transferred	$ 7,500
Cash paid to acquire the business	1,300
Transactions recognized separately from preliminary purchase price allocation	$ 600
Other
Business Acquisition [Line Items]
Cash paid to acquire the business		$ 2,400
Business combination, number of business acquisitions \| Acquisition		15

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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The number of businesses acquired by the entity during the period.

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