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Convertible Senior Notes (Tables)
 12 Months Ended
Jan. 31, 2022
Debt Disclosure [Abstract]  
Schedule of Components of Convertible Senior Notes
The 2026 Notes, 2025 Notes and 2023 Notes consisted of the following (in thousands):

As of January 31, 2022As of January 31, 2021
2026 Notes2025 Notes2023 Notes2026 Notes2025 Notes2023 Notes
Liability:
Principal$1,380,000 $804,990 $1,752 $1,380,000 $804,999 $8,832 
Unamortized debt discount and issuance costs (1)
(408,467)(162,266)(113)(482,475)(203,638)(1,125)
Net carrying amount$971,533 $642,724 $1,639 $897,525 $601,361 $7,707 
Carrying amount of the equity component (2)
$501,053 $246,966 $460 $501,053 $246,966 $1,560 

(1)Included in the consolidated balance sheets within Convertible senior notes, net and amortized over the remaining lives of the convertible senior notes. The 2026 Notes and 2025 Notes were classified as noncurrent liabilities, and the 2023 Notes was classified as current liabilities.
(2)Included in the consolidated balance sheets within additional paid-in capital and temporary equity.