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Accounts Receivable Accounts Receivable (Tables)
 12 Months Ended
Dec. 31, 2024
Accounts Receivable [Abstract]  
Summary of activity in the allowance for doubtful accounts
A summary of activity in the allowance for credit losses was as follows:
(in millions)Balance
beginning
of year		Additions-
charged
to expense		Deductions-
write-offs		Balance
end of
year
2024$101 57 (69)89 
2023102 58 (59)101 
202299 80 (77)102