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Net Income Per Share
 12 Months Ended
Mar. 31, 2025
Earnings Per Share [Abstract]  
Net Income Per Share Net Income Per Share
The following table summarizes the computations of basic and diluted net income per share for fiscal years 2025, 2024 and 2023 (in thousands except per share amounts):
 Years Ended March 31,
 202520242023
Net income $631,529 $612,143 $364,575 
Shares used in net income per share computation:
Weighted average shares outstanding - basic151,322 156,776 162,302 
Effect of potentially dilutive equivalent shares1,462 1,395 1,402 
Weighted average shares outstanding - diluted152,784 158,171 163,704 
   
Net income per share:
Basic$4.17 $3.90 $2.25 
Diluted$4.13 $3.87 $2.23 
Share equivalents attributable to outstanding stock options, restricted stock units and employee share purchase plans ("ESPP") totaling 0.7 million, 1.1 million, and 2.0 million shares during fiscal years 2025, 2024 and 2023, respectively, were excluded from the calculation of diluted net income per share because their effect would have been antidilutive. A small number of PSUs were not included in the dilutive net income per share calculation because all necessary conditions had not been satisfied by the end of the respective period, and those shares were not issuable if the end of the reporting period were the end of the performance contingency period.