Fair Value Measurement - Schedule of Financial Assets and Liabilities at Fair Value (Details) - Fair Value, Recurring - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financial assets:
Cash and cash equivalents	$ 3,107,535	$ 3,487,708
Total financial assets	3,272,154	3,810,347
Level 1
Financial assets:
Cash and cash equivalents	3,107,535	3,487,708
Total financial assets	3,272,154	3,810,347
Level 2
Financial assets:
Cash and cash equivalents	0	0
Total financial assets	0	0
Level 3
Financial assets:
Cash and cash equivalents	0	0
Total financial assets	0	0
Money market trust
Financial assets:
Restricted cash	63,432	68,961
Money market trust | Level 1
Financial assets:
Restricted cash	63,432	68,961
Money market trust | Level 2
Financial assets:
Restricted cash	0	0
Money market trust | Level 3
Financial assets:
Restricted cash	0	0
Time deposit
Financial assets:
Restricted cash	100,036	250,839
Long-term restricted cash	1,151	2,839
Time deposit | Level 1
Financial assets:
Restricted cash	100,036	250,839
Long-term restricted cash	1,151	2,839
Time deposit | Level 2
Financial assets:
Restricted cash	0	0
Long-term restricted cash	0	0
Time deposit | Level 3
Financial assets:
Restricted cash	0	0
Long-term restricted cash	$ 0	$ 0