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Note 4 - Financing Arrangements (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Schedule of Debt [Table Text Block]
  

March 31, 2022

  

December 31, 2021

 

Senior notes

 $1,296.8  $1,301.2 

Less current portion of long-term debt

  (351.2)  (356.0)

Total long-term debt

 $945.6  $945.2