Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Narrative) (Details)

v3.20.2
Fair Value Measurements (Narrative) (Details) - USD ($)
$ in Millions
May 31, 2020
May 31, 2019
Senior Notes, Series A [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of long-term borrowings $ 441.9 $ 416.6
Senior Notes, Series B [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of long-term borrowings $ 448.7 $ 418.3