Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Stockholders' Equity (Parenthetical)

v3.20.4
Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
May 31, 2019
Nov. 30, 2020
Nov. 30, 2019
Nov. 30, 2020
Nov. 30, 2019
Unrealized gains (losses) on securities, tax   $ 1.8 $ 3.3 $ 2.4 $ 5.2
Reclassification adjustment for realized gains on securities, tax   $ 0.1 $ 0.2 $ 0.2 $ 0.4
Cash dividends declared, per share   $ 0.62 $ 0.62 $ 1.24 $ 1.24
Authorized In May 2019 [Member]          
Approved repurchase amount $ 400.0        
Expiration date May 31, 2022