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ACCOUNTS RECEIVABLE AND OTHER
 3 Months Ended
Mar. 31, 2020
Receivables [Abstract]  
ACCOUNTS RECEIVABLE AND OTHER ACCOUNTS RECEIVABLE AND OTHER
(unaudited)
 
 
 
 
(millions of dollars)
 
March 31, 2020
 
December 31, 2019
Trade accounts receivable, net of allowance of nil
 
34

 
37

Imbalance receivable from affiliates
 
—

 
—

Other
 
3

 
6

 
 
37

 
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