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Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Product Warranty Liability
The Company recorded the activity related to the warranty reserve for the nine months ended September 30 as follows:
In millions
2017
 
2016
Warranty reserve liability
 
 
 
Beginning balance as of January 1
$
27

 
$
24

Accruals for warranties issued
29

 
31

Settlements (in cash or in kind)
(31
)
 
(29
)
Ending balance as of September 30
$
25

 
$
26