Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 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 March 31
	2020		2019
Operating and maintenance expenses	$	48	105
General and administrative expenses	17		17
Total	$	65	122

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
	March 31 2020		December 31 2019
Prepaid expenses and other current assets	$	12	7
Other assets	48		44
Deferred revenues	18		16
Other current liabilities	1		1
Other liabilities	68		70