Summary of Significant Accounting Policies - Revisions to Previously Reported Quarterly Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 2,130,858	$ 3,302,072	$ 1,500,357
Short-term investments.			$ 240,000
Cash flows from investing activities
Purchases of short-term investments		(205,000)
Proceeds from maturities of short-term investments	240,000
Net cash used in investing activities	79,656	(343,266)
Net increase (decrease) in cash and cash equivalents	$ 630,501	2,732
Previously reported
Current assets:
Cash and cash equivalents		3,507,072
Cash flows from investing activities
Net cash used in investing activities		(138,266)
Net increase (decrease) in cash and cash equivalents		207,732
Adjustments | Short term investments classification
Current assets:
Cash and cash equivalents		(205,000)
Cash flows from investing activities
Purchases of short-term investments		(205,000)
Net cash used in investing activities		(205,000)
Net increase (decrease) in cash and cash equivalents		$ (205,000)