v3.25.1
Fair Value Measurements (Details) - USD ($)
$ in Thousands
Apr. 30, 2025
Jan. 31, 2025
Financial Assets:    
Marketable securities $ 6,563,976 $ 6,442,329
Privately held debt securities included in strategic investments 4,463 4,450
Commercial paper    
Financial Assets:    
Marketable securities 2,930 20,841
Agency bonds    
Financial Assets:    
Marketable securities 997,588 1,174,484
Corporate and other debt securities    
Financial Assets:    
Marketable securities 748,025 720,795
U.S. government agency securities    
Financial Assets:    
Marketable securities 4,732,914 4,415,930
Treasury bills    
Financial Assets:    
Marketable securities 82,519 110,279
Fair Value, Recurring Basis    
Financial Assets:    
Cash equivalents 825,527 867,001
Marketable securities 6,563,976 6,442,329
Publicly held equity securities included in strategic investments 47,479 35,280
Privately held debt securities included in strategic investments 4,463 4,450
Total financial assets 7,441,445 7,349,060
Fair Value, Recurring Basis | Commercial paper    
Financial Assets:    
Marketable securities 2,930 20,841
Fair Value, Recurring Basis | Agency bonds    
Financial Assets:    
Marketable securities 997,588 1,174,484
Fair Value, Recurring Basis | Corporate and other debt securities    
Financial Assets:    
Marketable securities 748,025 720,795
Fair Value, Recurring Basis | U.S. government agency securities    
Financial Assets:    
Marketable securities 4,732,914 4,415,930
Fair Value, Recurring Basis | Treasury bills    
Financial Assets:    
Marketable securities 82,519 110,279
Fair Value, Recurring Basis | Money market funds    
Financial Assets:    
Cash equivalents 764,078 825,044
Fair Value, Recurring Basis | Treasury bills    
Financial Assets:    
Cash equivalents 33,910 17,965
Fair Value, Recurring Basis | Commercial paper    
Financial Assets:    
Cash equivalents 994  
Fair Value, Recurring Basis | Agency bonds    
Financial Assets:    
Cash equivalents 26,545 23,992
Fair Value, Recurring Basis | Level 1    
Financial Assets:    
Cash equivalents 764,078 825,044
Marketable securities 0 0
Publicly held equity securities included in strategic investments 47,479 35,280
Privately held debt securities included in strategic investments 0 0
Total financial assets 811,557 860,324
Fair Value, Recurring Basis | Level 1 | Commercial paper    
Financial Assets:    
Marketable securities 0 0
Fair Value, Recurring Basis | Level 1 | Agency bonds    
Financial Assets:    
Marketable securities 0 0
Fair Value, Recurring Basis | Level 1 | Corporate and other debt securities    
Financial Assets:    
Marketable securities 0 0
Fair Value, Recurring Basis | Level 1 | U.S. government agency securities    
Financial Assets:    
Marketable securities 0 0
Fair Value, Recurring Basis | Level 1 | Treasury bills    
Financial Assets:    
Marketable securities 0 0
Fair Value, Recurring Basis | Level 1 | Money market funds    
Financial Assets:    
Cash equivalents 764,078 825,044
Fair Value, Recurring Basis | Level 1 | Treasury bills    
Financial Assets:    
Cash equivalents 0 0
Fair Value, Recurring Basis | Level 1 | Commercial paper    
Financial Assets:    
Cash equivalents 0  
Fair Value, Recurring Basis | Level 1 | Agency bonds    
Financial Assets:    
Cash equivalents 0 0
Fair Value, Recurring Basis | Level 2    
Financial Assets:    
Cash equivalents 61,449 41,957
Marketable securities 6,563,976 6,442,329
Publicly held equity securities included in strategic investments 0 0
Privately held debt securities included in strategic investments 0 0
Total financial assets 6,625,425 6,484,286
Fair Value, Recurring Basis | Level 2 | Commercial paper    
Financial Assets:    
Marketable securities 2,930 20,841
Fair Value, Recurring Basis | Level 2 | Agency bonds    
Financial Assets:    
Marketable securities 997,588 1,174,484
Fair Value, Recurring Basis | Level 2 | Corporate and other debt securities    
Financial Assets:    
Marketable securities 748,025 720,795
Fair Value, Recurring Basis | Level 2 | U.S. government agency securities    
Financial Assets:    
Marketable securities 4,732,914 4,415,930
Fair Value, Recurring Basis | Level 2 | Treasury bills    
Financial Assets:    
Marketable securities 82,519 110,279
Fair Value, Recurring Basis | Level 2 | Money market funds    
Financial Assets:    
Cash equivalents 0 0
Fair Value, Recurring Basis | Level 2 | Treasury bills    
Financial Assets:    
Cash equivalents 33,910 17,965
Fair Value, Recurring Basis | Level 2 | Commercial paper    
Financial Assets:    
Cash equivalents 994  
Fair Value, Recurring Basis | Level 2 | Agency bonds    
Financial Assets:    
Cash equivalents 26,545 23,992
Fair Value, Recurring Basis | Level 3    
Financial Assets:    
Cash equivalents 0 0
Marketable securities 0 0
Publicly held equity securities included in strategic investments 0 0
Privately held debt securities included in strategic investments 4,463 4,450
Total financial assets 4,463 4,450
Fair Value, Recurring Basis | Level 3 | Commercial paper    
Financial Assets:    
Marketable securities 0 0
Fair Value, Recurring Basis | Level 3 | Agency bonds    
Financial Assets:    
Marketable securities 0 0
Fair Value, Recurring Basis | Level 3 | Corporate and other debt securities    
Financial Assets:    
Marketable securities 0 0
Fair Value, Recurring Basis | Level 3 | U.S. government agency securities    
Financial Assets:    
Marketable securities 0 0
Fair Value, Recurring Basis | Level 3 | Treasury bills    
Financial Assets:    
Marketable securities 0 0
Fair Value, Recurring Basis | Level 3 | Money market funds    
Financial Assets:    
Cash equivalents 0 0
Fair Value, Recurring Basis | Level 3 | Treasury bills    
Financial Assets:    
Cash equivalents 0 0
Fair Value, Recurring Basis | Level 3 | Commercial paper    
Financial Assets:    
Cash equivalents 0  
Fair Value, Recurring Basis | Level 3 | Agency bonds    
Financial Assets:    
Cash equivalents $ 0 $ 0