Marketable Securities - Additional Information (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2022 USD ($) Security	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) Security
Marketable Securities [Abstract]
Number of available-for-sale debt securities, continuous unrealized loss position for less than 12 months | Security	121		113
Aggregate fair value of available-for-sale debt securities, continuous unrealized loss position for less than 12 months	$ 467,000,000.0		$ 515,400,000
Number of available-for-sale debt securities, contractual maturity of less than 12 months | Security	86		79
Fair value of available-for-sale debt securities, contractual maturity of less than 12 months	$ 387,100,000		$ 394,400,000
Number of available-for-sale debt securities, contractual maturity of greater than 12 months | Security	38		37
Fair value of available-for-sale debt securities, contractual maturity of greater than 12 months	$ 102,478,000		$ 125,187,000
Sales of marketable securities	0	$ 0
Available-for-sale securities, credit losses	$ 0		$ 0