Related Party Transactions (Tables)

6 Months Ended

Jun. 30, 2020

Related Party Transactions [Abstract]

Summary of Related Party Transactions

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

	Millions of Dollars
	Three Months Ended June 30			Six Months Ended June 30
	2020		2019	2020	2019
Operating and maintenance expenses	$	42	50	90	155
General and administrative expenses	21		16	38	33
Total	$	63	66	128	188

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
	June 30 2020		December 31 2019
Prepaid expenses and other current assets	$	6	7
Other assets	48		44
Deferred revenues	24		16
Other current liabilities	1		1
Other liabilities	67		70