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Valuation and Qualifying Accounts
 12 Months Ended
Sep. 30, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Valuation and Qualifying Accounts
VALUATION AND QUALIFYING ACCOUNTS
(In thousands)
 
  
Accounts
 
Receivable
Allowances
 
  
Valuation 
Allowances on
Net Deferred
 
Tax Assets
 
Balance as of September 30, 2017
  $
28,726
     $
94,573
  
Charged to costs and expenses
   
6,134
      
18,173
  
Charged to other accounts
   
1,226
      
6,121
 (1)
Deductions
   
(14,875
)(2)
    
(6,140
 )
                 
Balance as of September 30, 2018
   
21,211
      
112,727
  
Charged to costs and expenses
   
22,260
      
1,009
  
Charged to other accounts
   
2,406
      
6,008
 (1)
Deductions
   
(9,756
)(4)
    
(34,211
)(3)
                 
Balance as of September 30, 2019
   
36,121
      
85,533
  
Charged to costs and expenses
   
18,465
      
8,521
  
Charged to other accounts
   
(3,523
 )     
1,005
 (1)
Deductions
   
(27,644
)(6)
    
(25,604
 )(5)
                 
Balance as of September 30, 2020
  $
23,419
     $
69,455
  
                 
 
(1)
Includes valuation allowances on deferred tax assets incurred in connection with an acquisition.
(2)
$6,659 of accounts receivable allowances were written off against the related accounts receivables, and the remaining deductions in the accounts receivable allowances were released to earnings.
(3)
$7,588 of valuation allowances on deferred tax assets were written off against the related deferred tax assets, and the remaining deductions in the valuation allowances on net deferred tax assets were released to earnings.
(4)
$3,539 of accounts receivable allowances were written off against the related accounts receivables, and the remaining deductions in the accounts receivable allowances were released to earnings.
(5)
$2,283 of valuation allowances on deferred tax assets were written off against the related deferred tax assets, and the remaining deductions in the valuation allowances on net deferred tax assets were released to earnings.
(6)
$4,969 of accounts receivable allowances were written off against the related accounts receivables,
$7,089
were written off against deferred revenue and the remaining deductions in the accounts receivable allowances were released to
earnings
.