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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

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Represents the carrying value of the cash call guarantee liability as of the balance sheet date.

+ References

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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

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- Definition

Barrels of crude oil to be redelivered to their owners under various agreements.

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- Definition

Certain of our lease agreements contain renewal options. Represents the maximum renewal term of our lease agreements.

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Represents the maximum lease agreement term in years of material lease agreements.

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Represents the minimum lease agreement term in years of material lease agreements.

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- Definition

Natural gas to be redelivered to their owners under various agreements.

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Barrels of NGL and Petrochemical products to be redelivered to their owners under various agreements.

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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.

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Percentage of Centennial's debt guaranteed by Enterprise.

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The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

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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.

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Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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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.

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Amount of loss contingency liability.

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