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Receivables, net
 12 Months Ended
Dec. 31, 2023
Receivables [Abstract]  
Receivables, net

4. Receivables, net

Receivables are recorded and carried at the original invoiced amount less an allowance for doubtful accounts.

Activity in the allowance for doubtful accounts was as follows (in millions):

 

 

December 31,

 

 

 

2023

 

 

2022

 

 

2021

 

Allowance for doubtful accounts

 

 

 

 

 

 

 

 

 

Beginning balance

 

$

25

 

 

$

25

 

 

$

28

 

Additions (deductions) charged to expenses

 

 

2

 

 

 

2

 

 

 

(2

)

Charge-offs and other

 

 

(1

)

 

 

(2

)

 

 

(1

)

Ending balance

 

$

26

 

 

$

25

 

 

$

25