Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2015

As of December 31, 2015, Oxy owned approximately 13% of the limited partner interests in our general partner and had a representative on the board of directors of GP LLC. During the three years ended December 31, 2015, we recognized sales and transportation revenues and purchased petroleum products from Oxy. These transactions were conducted at posted tariff rates or prices that we believe approximate market. A portion of these transactions was conducted under a crude oil buy/sell agreement that includes a multi-year minimum volume commitment. The impact to our Consolidated Statements of Operations from those transactions is included below (in millions):

	Year Ended December 31,
	2015		2014		2013
Revenues	$	866	$	1,212	$	1,309

Purchases and related costs (1)	$	41	$	925	$	863

(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 on our Consolidated Balance Sheets were as follows as of the dates indicated (in millions):

	December 31,
	2015		2014
Trade accounts receivable and other receivables	$	405	$	489

Accounts payable	$	363	$	441