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Net Income Per Share (Tables)
 9 Months Ended
Oct. 31, 2025
Earnings Per Share [Abstract]  
Schedule of Calculation of Numerator and Denominator in Net Loss Per Share The following table sets forth the computation of the numerators and denominators used in the basic and diluted net income per share amounts:
 Three Months Ended October 31,Nine Months Ended October 31,
2025202420252024
Numerator:
Net income $343 $275 $808 $809 
Denominator:
Denominator for basic net income per share—weighted average shares213 215 213 215 
Effect of dilutive securities2 2 2 2 
Denominator for dilutive net income per share215 217 215 217 
Basic net income per share$1.61 $1.28 $3.79 $3.76 
Diluted net income per share$1.60 $1.27 $3.76 $3.73