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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 MMBTU bbl | Dec. 31, 2012 | Dec. 31, 2011
Redelivery commitments [Abstract] |  |  |
Redelivery commitments of natural gas (in Btus) | 9,700,000 |  |
Redelivery commitments of crude oil (in MMBbls) | 9,200,000 |  |
Redelivery commitments of NGL and petrochemical products (in MMBbls) | 25,100,000 |  |
Operating lease obligations [Abstract] |  |  |
Minimum term of material lease agreements (in years) | 5 years |  |
Maximum term of material lease agreements (in years) | 20 years |  |
Renewal option years for certain leases (in years) | 20 years |  |
Lease and rental expense included in costs and expenses | $ 87.6 | $ 95.1 | $ 86.2
Other claims [Abstract] |  |  |
Claims against various parties related to contractual agreements | 39.2 |  |
Claims against us related to contractual agreements | 76.0 |  |
Centennial debt guarantee [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Percentage of debt obligations guaranteed (in hundredths) | 50.00% |  |
Guarantee of debt obligations | 42.2 |  |
Fair value of debt guarantee | 6.0 |  |
Cash call guarantee | 50.0 |  |
Fair value of cash call guarantee | 2.6 |  |
Centennial Pipeline LLC [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt obligations | 84.4 |  |
Litigation matters [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Litigation accruals on an undiscounted basis | $ 3.7 | $ 4.4 |

X
- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the cash call agreement for certain unconsolidated affiliates. The cash call agreement has been entered into in lieu of insurance. + References No definition available. + Details
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- Definition Represents the carrying value of the cash call guarantee liability as of the balance sheet date. + References No definition available. + Details
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- Definition Claims made against joint ventures, partners, certain customers and suppliers related to contractual agreements by the company during the normal course of business. + References No definition available. + Details
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- Definition Barrels of crude oil to be redelivered to their owners under various agreements. + References No definition available. + Details
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X
- Definition Certain of our lease agreements contain renewal options. Represents the maximum renewal term of our lease agreements. + References No definition available. + Details
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- Definition Represents the maximum lease agreement term in years of material lease agreements. + References No definition available. + Details
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- Definition Represents the minimum lease agreement term in years of material lease agreements. + References No definition available. + Details
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- Definition Natural gas to be redelivered to their owners under various agreements. + References No definition available. + Details
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- Details
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- Definition Barrels of NGL and Petrochemical products to be redelivered to their owners under various agreements. + References No definition available. + Details
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- Definition As part of our normal business activities we occasionally have claims made against us as a result of disputes related to contractual agreements or other communications. These matters are in various stages of assessment and the ultimate outcome of such disputes cannot be reasonably estimated at this time. However, in our opinion, the likelihood of a material adverse outcome to us resulting from such disputes is remote. + References No definition available. + Details
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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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