Related Party Transactions

12 Months Ended

Dec. 31, 2017

Certain of our businesses in Panama and the Dominican Republic are partially owned by governments either directly or through state-owned institutions. In the ordinary course of business, these businesses enter into energy purchase and sale transactions, and transmission agreements with other state-owned institutions which are controlled by such governments. At two of our generation businesses in Mexico, the offtakers exercise significant influence, but not control, through representation on these businesses' Boards of Directors. These offtakers are also required to hold a nominal ownership interest in such businesses. In Chile, we provide capacity and energy under contractual arrangements to our investment which is accounted for under the equity method of accounting. Additionally, the Company provides certain support and management services to several of its affiliates under various agreements.

The Company's Consolidated Statements of Operations included the following transactions with related parties for the periods indicated (in millions):



Years Ended December 31,	2017		2016		2015
Revenue—Non-Regulated	$	1,297	$	1,100	$	1,099
Cost of Sales—Non-Regulated	220		210		330
Interest income	8		4		25
Interest expense	36		39		33

The following table summarizes the balances receivable from and payable to related parties included in the Company's Consolidated Balance Sheets as of the periods indicated (in millions):



December 31,	2017		2016
Receivables from related parties	$	250	$	218
Accounts and notes payable to related parties	727		892

The Company entered into an equity transaction with our related party, Linda Group, see Note 14—Equity for further information.