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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Amount of asset retirement obligations incurred during the period.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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No definition available.

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Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

The number of limited partner units issued.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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No definition available.

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- Definition

Monetary value of the issuance of new units of limited partnership interest in a public offering, net of offering costs. This is a parenthetical disclosure.

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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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No definition available.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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No definition available.

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Acquisitions (Narrative) (Details)							1 Months Ended	12 Months Ended
Acquisitions (Narrative) (Details)	Nov. 14, 2016	Jul. 27, 2016 USD ($)	Jul. 24, 2015 USD ($) platform	Jul. 22, 2015 USD ($)	Apr. 10, 2015 USD ($)	Sep. 26, 2014 USD ($)	Jul. 31, 2015 USD ($) shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares	Jul. 25, 2015	Jul. 23, 2015	Dec. 31, 2014 USD ($)	Nov. 13, 2014 USD ($)
Business Acquisition [Line Items]
Common units, issued (in shares) \| shares							10,350,000	117,979,218	109,979,218
Net proceeds received from sale of units, net of underwriter discounts		$ 298,452,000		$ 437,164,000	$ 198,168,000	$ 225,725,000	$ 437,200,000
Debt issued, aggregate principal amount							750,000,000
Proceeds from issuance of debt, net of discount							$ 728,600,000
Asset retirement obligation, preliminary fair value								$ 20,940,000	$ 158,230,000
Asset retirement obligation, retirement costs								$ 213,726,000	188,662,000			$ 14,790,000
Poseidon Oil Pipeline Company [Member]
Business Acquisition [Line Items]
Equity investment, ownership percentage								64.00%
Odyssey Pipeline L.L.C. [Member]
Business Acquisition [Line Items]
Equity investment, ownership percentage								29.00%
SEKCO [Member]
Business Acquisition [Line Items]
Equity investment, ownership percentage										50.00%
Enterprise Offshore Acquisition [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition			Jul. 24, 2015
Transaction costs related to business acquisition			$ 1,500,000,000
Number of offshore hub platforms \| platform			6
Estimated useful life of finite-lived intangible assets acquired			19 years
Acquisition related costs								$ 1,000,000	$ 15,000,000
Enterprise Offshore Acquisition [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Estimated useful lives of property and equipment acquired			2 years
Enterprise Offshore Acquisition [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Estimated useful lives of property and equipment acquired			35 years
Enterprise Offshore Acquisition [Member] \| Poseidon Oil Pipeline Company [Member]
Business Acquisition [Line Items]
Equity investment, ownership percentage			36.00%
Enterprise Offshore Acquisition [Member] \| SEKCO [Member]
Business Acquisition [Line Items]
Equity investment, ownership percentage			50.00%								50.00%
Enterprise Offshore Acquisition [Member] \| CHOPS [Member]
Business Acquisition [Line Items]
Equity investment, ownership percentage			50.00%						50.00%		50.00%
Enterprise Offshore Acquisition [Member] \| Independence Hub, LLC [Member]
Business Acquisition [Line Items]
Equity investment, ownership percentage								80.00%
Noncontrolling interest ownership percentage								20.00%
M/T American Phoenix Acquisition [Member]
Business Acquisition [Line Items]
Transaction costs related to business acquisition													$ 157,000,000
Estimated useful lives of property and equipment acquired	30 years
Accrued Liabilities [Member] \| Enterprise Offshore Acquisition [Member]
Business Acquisition [Line Items]
Asset retirement obligation, retirement costs								$ 22,400,000	$ 9,800,000