Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2018

Accounts receivable from related companies reflected on the consolidated balance sheets primarily related to services provided to ET, ETO and other affiliates. Accounts payable to related companies and advance from affiliates reflected on the consolidated balance sheets related to various services provided by ETO and other affiliates.

The following tables provide a summary of related party activity included in our consolidated statements of operations:



	Years Ended December 31,
	2018		2017		2016
Operating revenues	$	97	$	43	$	17
Operating and maintenance	3		7		14
General and administrative	24		23		27
Interest income — affiliates	—		10		26
Interest expense — affiliates	13		—		—