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Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Sep. 30, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II Valuation and Qualifying Accounts
ATMOS ENERGY CORPORATION
Valuation and Qualifying Accounts
Three Years Ended September 30, 2020
 
 
 
 
Additions
 
 
 
 
 
 
Balance at
beginning
of period
 
Charged to
cost &
expenses
 
Charged to
other
accounts
 
Deductions
 
 
Balance
at end
of period
 
 
 
(In thousands)
 
 
 
 
 
2020
 
 
 
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
15,899

 
$
23,837

 
$
—

 
$
9,787

(1) 
 
$
29,949

2019
 
 
 
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
14,795

 
$
17,633

 
$
—

 
$
16,529

(1) 
 
$
15,899

2018
 
 
 
 
 
 
 
 
 
 
Allowance for doubtful accounts
$
10,865

 
$
14,894

 
$
—

 
$
10,964

(1) 
 
$
14,795

 
(1) 
Uncollectible accounts written off.