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Financing Arrangements (Tables)
3 Months Ended
Mar. 31, 2016
Financing Arrangements [Abstract]  
Schedule of Notes Payable
The following table summarizes the carrying value of notes payable at March 31, 2016 and December 31, 2015:
Millions of dollars
 
March 31, 2016
 
December 31, 2015
Commercial paper
 
$
868

 
$

Short-term borrowings to banks
 
130

 
20

Total notes payable
 
$
998

 
$
20