Investments, Loans and Long-Term Receivables	6 Months Ended
Investments, Loans and Long-Term Receivables	Jun. 30, 2020
Equity Method Investments and Joint Ventures [Abstract]
Investments, Loans and Long-Term Receivables	Investments, Loans and Long-Term Receivables Equity Investments DCP Midstream, LLC (DCP Midstream) The fair value of our investment in DCP Midstream depends on the market value of DCP Midstream, LP (DCP Partners) common units. The market value of DCP Partners common units declined by approximately 85% in the first quarter of 2020. As a result, at March 31, 2020, the fair value of our investment in DCP Midstream was significantly lower than its book value. We concluded the difference between its fair value and book value was not temporary primarily due to its magnitude. Accordingly, we recorded a $1.2 billion before-tax impairment of our investment in the first quarter of 2020. This charge is included in the “Impairments” line item on our consolidated statement of operations for the six months ended June 30, 2020. The impairment increased the basis difference for our investment in DCP Midstream to $1.8 billion at March 31, 2020, which indicated the carrying value of our investment was lower than our share of DCP Midstream’s recorded net assets at March 31, 2020. The basis difference is being amortized and recognized as a benefit to equity earnings over a period of 22 years, which was the estimated remaining useful life of DCP Midstream’s properties, plants and equipment (PP&E) at March 31, 2020. Equity earnings for the three and six months ended June 30, 2020, were increased by approximately $20 million and $30 million, respectively, due to the amortization of the basis difference. See Note 13—Fair Value Measurements, for additional information on the techniques used to determine the fair value of our investment in DCP Midstream. At June 30, 2020, our investment in DCP Midstream had a book value of $254 million. Gray Oak Pipeline, LLC Phillips 66 Partners LP (Phillips 66 Partners) has a consolidated holding company that owns 65% of Gray Oak Pipeline, LLC. Excluding a co-venturer’s 35% interest in the consolidated holding company, Phillips 66 Partners has an effective ownership interest of 42.25% in Gray Oak Pipeline, LLC. Gray Oak Pipeline, LLC has a third-party term loan facility with a borrowing capacity of $1,379 million, inclusive of accrued interest. Borrowings under the facility are due on June 3, 2022. Phillips 66 Partners and its co-venturers provided a guarantee through an equity contribution agreement requiring proportionate equity contributions to Gray Oak Pipeline, LLC up to the total outstanding loan amount, plus any additional accrued interest and associated fees, if Gray Oak Pipeline, LLC defaults on certain of its obligations thereunder. At June 30, 2020, the term loan facility was fully utilized by Gray Oak Pipeline, LLC, and Phillips 66 Partners’ 42.25% proportionate exposure under the equity contribution agreement was $583 million. During its development phase, Gray Oak Pipeline, LLC was considered a variable interest entity (VIE) because it did not have sufficient equity at risk to fully fund the construction of all assets required for principal operations. We determined we were not the primary beneficiary because we and our co-venturers jointly directed the activities of Gray Oak Pipeline, LLC that most significantly impacted economic performance. The Gray Oak Pipeline commenced full operations in the second quarter of 2020 and ceased being a VIE. At June 30, 2020, Phillips 66 Partners’ investment in the Gray Oak Pipeline had a book value of $896 million. See Note 19—Phillips 66 Partners LP, for additional information regarding Phillips 66 Partners’ ownership in Gray Oak Pipeline, LLC. Dakota Access, LLC (Dakota Access) and Energy Transfer Crude Oil Company, LLC (ETCO) In March 2019, a wholly owned subsidiary of Dakota Access closed an offering of $2.5 billion aggregate principal amount of unsecured senior notes, consisting of: •$650 million aggregate principal amount of 3.625% Senior Notes due 2022. •$1.0 billion aggregate principal amount of 3.900% Senior Notes due 2024. •$850 million aggregate principal amount of 4.625% Senior Notes due 2029. Dakota Access and ETCO have guaranteed repayment of the notes. In addition, Phillips 66 Partners and its co-venturers in Dakota Access provided a Contingent Equity Contribution Undertaking (CECU) in conjunction with the notes offering. Under the CECU, the co-venturers may be severally required to make proportionate equity contributions to Dakota Access if there is an unfavorable final judgment in the ongoing litigation related to an easement granted by the U.S. Army Corps of Engineers (USACE) to allow the pipeline to be constructed under Lake Oahe in North Dakota. Contributions may be required if Dakota Access determines that the issues included in any such final judgment cannot be remediated and Dakota Access has or is projected to have insufficient funds to satisfy repayment of the notes. If Dakota Access undertakes remediation to cure issues raised in a final judgment, contributions may be required if any series of the notes become due, whether by acceleration or at maturity, during such time, to the extent Dakota Access has or is projected to have insufficient funds to pay such amounts. At June 30, 2020, Phillips 66 Partners’ share of the maximum potential equity contributions under the CECU was approximately $631 million. In March 2020, the court presiding over this litigation ordered the USACE to prepare an Environmental Impact Statement (EIS), and requested additional information to enable a decision on whether the Dakota Access Pipeline should be shut down while the EIS is being prepared. On July 6, 2020, the court ordered the Dakota Access Pipeline to be shut down and emptied of crude oil by August 5, 2020, and that the pipeline should remain shut down pending the preparation of the EIS by the USACE, which the USACE has indicated is expected to take approximately 13 months. Dakota Access filed an appeal and a request for a stay of the order. On July 14, 2020, an appeals court granted a temporary stay of the lower court’s order directing the pipeline to be shut down and emptied of crude oil. The appeals court has not yet ruled on the motion for a stay during the appeals process. In addition to the potential obligations under the CECU, if the pipeline is required to cease operations pending the preparation of the EIS, and should Dakota Access and ETCO not have sufficient funds to pay ongoing expenses, Phillips 66 Partners also could be asked to support its share of the ongoing expenses, including scheduled interest payments on the notes of approximately $25 million annually. CF United LLC (CF United) We hold a 50% voting interest and a 48% economic interest in CF United, a retail marketing joint venture with operations primarily on the U.S. West Coast. CF United is considered a VIE because our co-venturer has an option to sell its interest to us based on a fixed multiple. The put option becomes effective July 1, 2023, and expires on March 31, 2024. The put option is viewed as a variable interest as the purchase price on the exercise date may not represent the then-current fair value of CF United. We have determined that we are not the primary beneficiary because we and our co-venturer jointly direct the activities of CF United that most significantly impact economic performance. At June 30, 2020, our maximum exposure to loss was comprised of our $322 million investment in CF United and any potential future loss resulting from the put option, if the purchase price based on a fixed multiple exceeds the then-current fair value of CF United. Liberty Pipeline LLC (Liberty) Liberty is a 50 percent-owned joint venture formed to develop and construct the Liberty Pipeline system which, upon completion, will transport crude oil from the Rockies and Bakken production areas to Cushing, Oklahoma. Liberty is considered a VIE because it does not have sufficient equity at risk to fully fund the construction of all assets required for principal operations. We have determined we are not the primary beneficiary because we and our co-venturer jointly direct the activities of Liberty that most significantly impact economic performance. On March 2, 2020, Phillips 66 Partners closed a transaction to acquire our 50% interest in Liberty for $75 million. The development and construction of the Liberty Pipeline system have been deferred as a result of the current challenging business environment. At June 30, 2020, our maximum exposure to loss was $251 million, which represented the book value of Phillips 66 Partners’ investment in Liberty of $202 million and our outstanding proportionate vendor guarantees of $49 million. Red Oak Pipeline LLC (Red Oak) We hold a 50% interest in a joint venture formed to develop and construct the Red Oak Pipeline system which, upon completion, will transport crude oil from Cushing, Oklahoma, and the Permian to multiple destinations along the Texas Gulf Coast, including Corpus Christi, Ingleside, Houston, and Beaumont, Texas. Red Oak is considered a VIE because it does not have sufficient equity at risk to fully fund the construction of all assets required for principal operations. We have determined we are not the primary beneficiary because we and our co-venturer jointly direct the activities of Red Oak that most significantly impact economic performance. The development and construction of the Red Oak Pipeline system have been deferred as a result of the current challenging business environment. In June 2020, Red Oak fully repaid its outstanding member loan. At June 30, 2020, our maximum exposure to loss was the book value of our investment in Red Oak of $104 million. OnCue Holdings, LLC (OnCue) We hold a 50% interest in OnCue, a joint venture that owns and operates retail convenience stores. We fully guaranteed various debt agreements of OnCue and our co-venturer did not participate in the guarantees. This entity is considered a VIE because our debt guarantees resulted in OnCue not being exposed to all potential losses. We have determined we are not the primary beneficiary because we do not have the power to direct the activities that most significantly impact OnCue’s economic performance. At June 30, 2020, our maximum exposure to loss was $155 million, which represented the book value of our investment in OnCue of $86 million and guaranteed debt obligations of $69 million.