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Acquisitions and Dispositions - Investment Acquisition (Details) - USD ($) shares in Millions, $ in Millions | Apr. 03, 2017 | Jun. 30, 2017 | Dec. 31, 2016
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Schedule of Equity Method Investments [Line Items] |  |  |
Equity method investment |  | $ 2,626.0 | $ 2,343.0
Advantage |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Cash consideration | $ 26.0 |  |
Ownership percentage | 50.00% |  |
Equity method investment | $ 66.5 |  |
Common Units | Advantage |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Value of common units | 40.0 |  |
Advantage Joint Venture | Advantage |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Consideration transferred | $ 133.0 |  |
PAA | Common Units | Advantage |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Contribution of common units (units) | 1.3 |  |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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