XML 89 R16.htm IDEA: XBRL DOCUMENT

Major Customer and Concentration of Credit Risk	12 Months Ended
Major Customer and Concentration of Credit Risk	Dec. 31, 2019
Risks and Uncertainties [Abstract]
Major Customer and Concentration of Credit Risk	Note 8—Major Customer and Concentration of Credit Risk Phillips 66 accounted for 97%, 96%, and 95% of our total operating revenues for the years ended December 31, 2019, 2018 and 2017, respectively. Through our wholly owned and joint venture operations, we provide crude oil, refined petroleum products and NGL pipeline transportation, terminaling and storage, and crude oil gathering, NGL fractionation, crude oil processing, and rail-unloading services to Phillips 66 and other related parties. We are potentially exposed to concentration of credit risk primarily through our accounts receivable with Phillips 66. These receivables have payment terms of 30 days or less and are settled against any existing payables we may have to Phillips 66 through Phillips 66’s interaffiliate settlement process. We monitor the creditworthiness of Phillips 66, which has an investment grade credit rating.