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Stockholders' Equity - Summary of Total Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	$ 300,898	$ 192,080	$ 794,571	$ 550,300
Cost of Revenue
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	9,132	2,623	14,635	6,471
Research and Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	198,893	132,003	537,177	377,836
Sales and Marketing
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	51,675	27,393	118,250	79,306
General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	$ 41,198	$ 30,061	$ 124,509	$ 86,687

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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