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Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2016
Oxy  
Related Party Transactions  
Schedule of related party transactions
The impact to our Consolidated Statements of Operations from those transactions is included below (in millions):

 
Year Ended December 31,
 
2016
 
2015
 
2014
Revenues
$
655

 
$
866

 
$
1,212

 
 
 
 
 
 
Purchases and related costs (1)
$
42

 
$
41

 
$
925

 
(1) 
Purchases and related costs include crude oil buy/sell transactions that are accounted for as inventory exchanges and are presented net in our Consolidated Statements of Operations.

We currently have a netting arrangement with Oxy. Our gross receivable and payable amounts with Oxy were as follows (in millions):

 
December 31,
 
2016
 
2015
Trade accounts receivable and other receivables
$
789

 
$
405

 
 
 
 
Accounts payable
$
836

 
$
363