Annual report pursuant to Section 13 and 15(d)

Quarterly Financial Data and Revision to Previously Reported Quarterly Financial Statements (Unaudited) - Impact of Revisions (Details)

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Quarterly Financial Data and Revision to Previously Reported Quarterly Financial Statements (Unaudited) - Impact of Revisions (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2021
Jun. 30, 2021
Sep. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Current assets:            
Cash and cash equivalents $ 3,303,033 $ 2,365,140 $ 1,369,816 $ 1,506,647 $ 3,300,482  
Short-term investments 205,000 385,000 565,000 240,000    
Cash flows from investing activities            
Purchases of short-term investments (205,000) (385,000) (770,000) (1,010,000)    
Proceeds from maturities of short-term investments     205,000 770,000    
Net cash used in investing activities (343,266) (700,215) (1,107,971) (1,004,044) (975,362) $ (1,680,192)
Net increase (decrease) in cash and cash equivalents 2,551 (935,342) (1,930,666) $ (1,793,835) $ 3,047,606 $ 89,025
Previously Reported            
Current assets:            
Cash and cash equivalents 3,508,033 2,750,140 1,934,816      
Cash flows from investing activities            
Net cash used in investing activities (138,266) (315,215) (542,971)      
Net increase (decrease) in cash and cash equivalents 207,551 (550,342) (1,365,666)      
Adjustments | Short term investments classification            
Current assets:            
Cash and cash equivalents (205,000) (385,000) (565,000)      
Short-term investments 205,000 385,000 565,000      
Cash flows from investing activities            
Purchases of short-term investments (205,000) (385,000) (770,000)      
Proceeds from maturities of short-term investments     205,000      
Net cash used in investing activities (205,000) (385,000) (565,000)      
Net increase (decrease) in cash and cash equivalents $ (205,000) $ (385,000) $ (565,000)