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SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2023
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS
SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS
For the Years Ended December 31, 2023, 2022 and 2021
(In millions)
Balance at
Beginning of
Period
Charged to
Costs and
Expenses
Charged to
Other Accounts
Deductions
Balance at
End of Period
Allowance for credit losses, deducted from accounts receivable and other non-current assets
     
Year Ended December 31, 2023$133 $251 $35 $(274)
(a)
$145 
Year Ended December 31, 2022683 11 — (561)
(a)
133 
Year Ended December 31, 202167 698 112 (194)
(a)
683 
Income tax valuation allowance, deducted from deferred tax assets
      
Year Ended December 31, 2023$224 $42 $9 $— $275 
Year Ended December 31, 2022248 (20)(4)— 224 
Year Ended December 31, 2021266 (29)11 — 

248 
(a) Represents principally net amounts charged as uncollectible