XML 38 R25.htm IDEA: XBRL DOCUMENT v3.10.0.1
Supplemental Financial Information (Tables)
 6 Months Ended
Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Supplemental Financial Information
 
As of
In millions
June 30,
2018
 
December 31,
2017
Inventories
 
 
 
Finished goods
$
17

 
$
18

Service parts
11

 
12

Total inventories
$
28

 
$
30

 
 
 
 
Deferred revenue
 
 
 
Deferred revenue, current
$
461

 
$
414

Long-term deferred revenue
109

 
85

Total deferred revenue
$
570

 
$
499