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Net Income Per Share (Tables)
 3 Months Ended
Apr. 30, 2022
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 April 30,
20222021
Numerator:
Net income $146 $156 
Denominator:
Denominator for basic net income per share—weighted average shares217 220 
Effect of dilutive securities2 2 
Denominator for dilutive net income per share219 222 
Basic net income per share$0.67 $0.71 
Diluted net income per share$0.67 $0.70