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Phillips 66 Partners LP (Tables)
6 Months Ended
Jun. 30, 2021
Limited Liability Company or Limited Partnership, Business Organization and Operations [Abstract]  
Schedule of Variable Interest Entities
The most significant assets of Phillips 66 Partners that are available to settle only its obligations, along with its most significant liabilities for which its creditors do not have recourse to Phillips 66’s general credit, were:

 Millions of Dollars
 June 30
2021
December 31
2020
Equity investments*$2,962 3,244 
Net properties, plants and equipment3,653 3,639 
Short-term debt465 465 
Long-term debt3,445 3,444 
* Included in the “Investments and long-term receivables” line item on the Phillips 66 consolidated balance sheet.