Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Stockholders' Equity (Parenthetical)

v3.24.3
Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Aug. 31, 2024
Aug. 31, 2023
Unrealized gains (losses) on securities, tax $ 20.2 $ (7.6)
Reclassification adjustment for realized gains (loss) on securities, tax $ 0.0 $ 0.0
Cash dividends declared, per share $ 0.98 $ 0.89
Authorized In July 2021 [Member]    
Expiration date Jan. 31, 2024  
Authorized In July 2021 [Member] | Maximum [Member]    
Approved repurchase amount $ 400.0  
Authorized In January 2024 [Member]    
Approved repurchase amount $ 400.0  
Expiration date May 31, 2027