Supplemental Balance Sheet Information - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Restricted Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	$ 1,492,971	$ 1,550,004	$ 308,128	$ 380,801
Restricted cash included in prepaid expenses and other current assets	2,197		0
Restricted Cash Equivalents, Noncurrent	40,677		6,139
Total cash, cash equivalents and restricted cash	$ 1,535,845	$ 1,592,928	$ 314,267	$ 385,877