Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2019

Significant related party transactions included in our total costs and expenses were:



	Millions of Dollars
	2019		2018	2017

Operating and maintenance expenses	$	258	214	189
General and administrative expenses	65		60	64
Total	$	323	274	253

Other related party balances were included in the following line items on our consolidated balance sheet, all of which were related to commercial agreements with Phillips 66:



	Millions of Dollars
	2019		2018

Prepaid expenses and other current assets	$	7	4
Other assets	44		—
Deferred revenues	16		60
Other current liabilities	1		—
Other liabilities	70		18