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Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2022
Fair Value Disclosures [Abstract]  
Schedule of Fair Value Assets Measured On Recurring Basis
The following table presents information about the Company’s financial instruments that are measured at fair value on a recurring basis using the input categories discussed in Note 1:   

As of March 31, 2022
Level 1Level 2Level 3Total
Cash equivalents
Money market funds$349.7 $— $— $349.7 
Commercial paper— 10.0 — 10.0 
Total cash equivalents$349.7 $10.0 $— $359.7 
Short-term investments
Corporate notes and obligations— 516.1 — 516.1 
U.S. Treasury securities— 255.4 — 255.4 
Asset backed securities— 134.3 — 134.3 
Commercial paper— 24.4 — 24.4 
Municipal securities— 65.9 — 65.9 
Certificates of deposit— 19.0 — 19.0 
U.S. agency obligations— 14.0 — 14.0 
Foreign government obligations— 13.2 — 13.2 
Supranational securities— 7.8 — 7.8 
Total short-term investments— 1,050.1 — 1,050.1 
Total $349.7 $1,060.1 $— $1,409.8 
As of December 31, 2021
Level 1Level 2Level 3Total
Cash equivalents
Money market funds$390.3 $— $— $390.3 
Total cash equivalents$390.3 $— $— $390.3 
Short-term investments
Corporate notes and obligations— 603.8 — 603.8 
U.S. Treasury securities— 237.5 — 237.5 
Asset backed securities— 139.6 — 139.6 
Municipal securities— 69.8 — 69.8 
Commercial paper— 61.7 — 61.7 
Certificates of deposit— 32.1 — 32.1 
Foreign government obligations— 18.3 — 18.3 
U.S. agency obligations— 14.4 — 14.4 
Supranational securities— 7.9 — 7.9 
Total short-term investments— 1,185.1 — 1,185.1 
Total $390.3 $1,185.1 $— $1,575.4