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Financing Arrangements (Tables)
6 Months Ended
Jun. 30, 2019
Debt Disclosure [Abstract]  
Schedule of Notes Payable
The following table summarizes the carrying value of notes payable at June 30, 2019 and December 31, 2018:
Millions of dollars
 
June 30, 2019
 
December 31, 2018
Commercial paper
 
$
947

 
$

Short-term borrowings due to banks
 
1,210

 
1,034

Total notes payable
 
$
2,157

 
$
1,034