Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Narrative) (Details)

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Fair Value Measurements (Narrative) (Details) - USD ($)
$ in Millions
Nov. 30, 2022
May 31, 2022
Senior Notes, Series A [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of long-term borrowings $ 392.5 $ 404.1
Senior Notes, Series B [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of long-term borrowings $ 389.5 $ 402.5