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Supplemental Financial Information
 9 Months Ended
Sep. 30, 2022
Supplemental Financial Information [Abstract]  
SUPPLEMENTAL FINANCIAL INFORMATION
The components of accounts receivable are summarized as follows:
In millionsSeptember 30, 2022December 31, 2021
Accounts receivable
Trade$1,087 $939 
Other58 44 
Accounts receivable, gross1,145 983 
Less: allowance for credit losses(29)(24)
Total accounts receivable, net$1,116 $959 
Our allowance for credit losses as of September 30, 2022 and December 31, 2021 was $29 million and $24 million, respectively. The impact to our allowance for credit losses for the three and nine months ended September 30, 2022 was an expense of $7 million and $15 million, respectively. We continue to evaluate our reserves in light of the age and quality of our outstanding accounts receivable, risks to specific industries or countries, as well as the COVID-19 pandemic, and adjust the reserves accordingly. The impact to our allowance for credit losses for the the three months ended September 30, 2021 was a benefit of $2 million and for the nine months ended September 30, 2021 was an expense of $1 million. The Company recorded write-offs against the reserve for the three months ended September 30, 2022 and 2021 of $4 million and $7 million, respectively. The Company recorded write-offs against the reserve for the nine months ended September 30, 2022 and 2021 of $10 million and $21 million, respectively.
The components of inventory are summarized as follows:
In millionsSeptember 30, 2022December 31, 2021
Inventories
Work in process and raw materials$113 $184 
Finished goods299 185 
Service parts415 385 
Total inventories$827 $754