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Note 23 - Schedule II Valuation and Qualifying Accounts and Reserves (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Valuation Allowances and Reserves [Table Text Block]
  

Balance at

  

Charged to

         
  

Beginning

  

Costs and

  

Deductions—

  

Balance at

 

Description

 

of Year

  

Expenses (1)

  

Write-offs (2)

  

End of Year

 

Year ended December 31, 2020

                

Allowance for doubtful accounts

 $11.7  $13.1  $(7.1) $17.7 

Valuation allowance for income taxes

 $46.5  $10.7  $(9.2) $48.0 

Year ended December 31, 2019

                

Allowance for doubtful accounts

 $5.7  $7.2  $(1.2) $11.7 

Valuation allowance for income taxes

 $34.5  $16.7  $(4.7) $46.5 

Year ended December 31, 2018

                

Allowance for doubtful accounts

 $4.6  $5.6  $(4.5) $5.7 

Valuation allowance for income taxes

 $17.6  $21.2  $(4.3) $34.5