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Earnings Per Common Share (Tables)
 12 Months Ended
Jan. 31, 2026
Earnings Per Share [Abstract]  
Schedule of the computations for basic and diluted earnings per common share
The computations for basic and diluted earnings per common share were as follows for the fiscal years presented below (in thousands, except per share data):
 
202520242023
Numerator:
Net income for earnings per common share – basic
$849,239 $1,165,308 $1,046,519 
Effect of dilutive securities
Interest expense associated with Convertible Senior Notes, net of tax— — 337 
Net income for earnings per common share – diluted
$849,239 $1,165,308 $1,046,856 
Denominator:
Weighted average common shares outstanding – basic
83,135 80,468 82,302 
Dilutive effect of stock-based awards2,009 2,461 2,977 
Dilutive effect of warrants— — 254 
Dilutive effect of Convertible Senior Notes— — 392 
Weighted average common shares outstanding – diluted
85,144 82,929 85,925 
Earnings per common share:
Basic$10.22 $14.48 $12.72 
Diluted$9.97 $14.05 $12.18 
Stock-based awards excluded from diluted shares63 18 186