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Property, Plant and Equipment, Significant Sales (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2011 Crystal Holding L.L.C. [Member] | Dec. 31, 2013 Crystal Holding L.L.C. [Member] | Dec. 31, 2012 Crystal Holding L.L.C. [Member] | Dec. 31, 2011 Crystal Holding L.L.C. [Member] | Mar. 31, 2013 Seminole Pipeline segment [Member] | Dec. 31, 2013 Seminole Pipeline segment [Member] | Dec. 31, 2012 Seminole Pipeline segment [Member] | Dec. 31, 2011 Seminole Pipeline segment [Member]
Significant Acquisitions and Disposals [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from disposal of assets | $ 280.6 | $ 1,198.8 | $ 1,053.8 | $ 547.8 | $ 0 | $ 0 | $ 547.8 | $ 86.9 | $ 86.9 | $ 0 | $ 0
Gains attributable to disposal of assets | 83.3 | 86.4 | 155.7 | 129.1 | 0 | 0 | 129.1 | 52.5 | 52.5 | 0 | 0
Net carrying value of property, plant and equipment | 26,946.6 | 24,846.4 | 22,191.6 | 356.2 |  |  | 356.2 |  |  |  |
Total assets | $ 40,138.7 | $ 35,934.4 |  | $ 411.9 |  |  | $ 411.9 |  |  |  |

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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