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Supplemental Financial Information
 9 Months Ended
Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Supplemental Financial Information Supplemental Financial Information
 As of
In millionsSeptember 30,
2022		December 31,
2021
Inventories
Finished goods$9 $17 
Service parts4 9 
Total inventories$13 $26 
Deferred revenue
Deferred revenue, current$462 $552 
Long-term deferred revenue14 27 
Total deferred revenue$476 $579 
 Three Months Ended September 30,Nine Months Ended September 30,
In millions2022202120222021
Other expense
Foreign currency losses$9 $3 $24 $5 
Other4 3 10 10 
Total Other expense$13 $6 $34 $15