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Condensed Consolidating Financial Information (Narrative) (Details) | Jun. 30, 2016 USD ($)
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Phillips 66 [Member] | Senior Notes [Member] |
Condensed Financial Statements, Captions [Line Items] |
Debt issued and guaranteed | $ 7,500,000,000.0
Guarantor Subsidiaries [Member] |
Condensed Financial Statements, Captions [Line Items] |
Percentage of ownership in subsidiary guarantor | 100.00%

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
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