Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2020

Related Party Transactions [Abstract]

Summary of Related Party Transactions

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

	Millions of Dollars
	Three Months Ended September 30			Nine Months Ended September 30
	2020		2019	2020	2019
Operating and maintenance expenses	$	46	48	136	203
General and administrative expenses	15		14	46	47

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
	September 30 2020		December 31 2019
Prepaid expenses and other current assets	$	4	7
Other assets	48		44
Deferred revenues	22		16
Other current liabilities	1		1
Other liabilities	66		70