Business Segments, Segment Reporting Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Information by business segment [Abstract]
Revenues from third parties	$ 7,466.4epd_ThirdPartyRevenue	$ 12,874.4epd_ThirdPartyRevenue
Revenues from related parties	6.1us-gaap_RevenueFromRelatedParties	35.5us-gaap_RevenueFromRelatedParties
Intersegment and intrasegment revenues	0epd_IntersegmentAndIntrasegmentRevenues	0epd_IntersegmentAndIntrasegmentRevenues
Total revenues	7,472.5us-gaap_SalesRevenueNet	12,909.9us-gaap_SalesRevenueNet
Equity in income (loss) of unconsolidated affiliates	89.2	56.5
Gross operating margin	1,334.4epd_TotalSegmentGrossOperatingMargin	1,329.8epd_TotalSegmentGrossOperatingMargin
Property, plant and equipment, net (see Note 6)	30,367.6us-gaap_PropertyPlantAndEquipmentNet		29,881.6us-gaap_PropertyPlantAndEquipmentNet
Investments in unconsolidated affiliates (see Note 7)	3,064.9us-gaap_EquityMethodInvestments		3,042.0us-gaap_EquityMethodInvestments
Intangible assets, net (see Note 8)	2,804.1		4,302.1
Goodwill (see Note 8)	5,654.0us-gaap_Goodwill		4,199.9us-gaap_Goodwill
Segment assets	41,890.6epd_SegmentAssets		41,425.6epd_SegmentAssets
NGL Pipelines and Services [Member]
Information by business segment [Abstract]
Equity in income (loss) of unconsolidated affiliates	11.6	1.4
Intangible assets, net (see Note 8)	249.1		689.2
Goodwill (see Note 8)	2,613.0		2,180.4
Onshore Natural Gas Pipelines and Services [Member]
Information by business segment [Abstract]
Equity in income (loss) of unconsolidated affiliates	0.9	0.9
Intangible assets, net (see Note 8)	963.0		972.9
Goodwill (see Note 8)	296.3		296.3
Onshore Crude Oil Pipelines and Services [Member]
Information by business segment [Abstract]
Equity in income (loss) of unconsolidated affiliates	59.9	42.7
Intangible assets, net (see Note 8)	1,351.5		2,223.6
Goodwill (see Note 8)	1,710.6		859.9
Offshore Pipelines And Services [Member]
Information by business segment [Abstract]
Equity in income (loss) of unconsolidated affiliates	20.2	11.1
Intangible assets, net (see Note 8)	39.3		41.6
Goodwill (see Note 8)	82.0		82.0
Petrochemical and Refined Products Services [Member]
Information by business segment [Abstract]
Equity in income (loss) of unconsolidated affiliates	(3.4)	0.4
Intangible assets, net (see Note 8)	201.2		374.8
Goodwill (see Note 8)	952.1		781.3
Reportable Business Segments [Member] \| NGL Pipelines and Services [Member]
Information by business segment [Abstract]
Revenues from third parties	2,674.8	5,173.7
Revenues from related parties	1.5	5.8
Intersegment and intrasegment revenues	2,443.1	3,861.0
Total revenues	5,119.4	9,040.5
Equity in income (loss) of unconsolidated affiliates	11.6	1.4
Gross operating margin	695.2	780.0
Property, plant and equipment, net (see Note 6)	11,775.8		11,766.9
Investments in unconsolidated affiliates (see Note 7)	681.6		682.3
Intangible assets, net (see Note 8)	249.1		689.2
Goodwill (see Note 8)	2,613.0		2,180.4
Segment assets	15,319.5		15,318.8
Reportable Business Segments [Member] \| Onshore Natural Gas Pipelines and Services [Member]
Information by business segment [Abstract]
Revenues from third parties	730.9	1,200.0
Revenues from related parties	3.0	4.6
Intersegment and intrasegment revenues	170.0	309.4
Total revenues	903.9	1,514.0
Equity in income (loss) of unconsolidated affiliates	0.9	0.9
Gross operating margin	204.5	220.4
Property, plant and equipment, net (see Note 6)	8,839.5		8,835.5
Investments in unconsolidated affiliates (see Note 7)	23.1		23.2
Intangible assets, net (see Note 8)	963.0		972.9
Goodwill (see Note 8)	296.3		296.3
Segment assets	10,121.9		10,127.9
Reportable Business Segments [Member] \| Onshore Crude Oil Pipelines and Services [Member]
Information by business segment [Abstract]
Revenues from third parties	2,677.0	4,935.4
Revenues from related parties	1.0	22.9
Intersegment and intrasegment revenues	1,277.1	2,550.7
Total revenues	3,955.1	7,509.0
Equity in income (loss) of unconsolidated affiliates	59.9	42.7
Gross operating margin	214.0	159.7
Property, plant and equipment, net (see Note 6)	2,382.8		2,332.2
Investments in unconsolidated affiliates (see Note 7)	1,797.9		1,767.7
Intangible assets, net (see Note 8)	1,351.5		2,223.6
Goodwill (see Note 8)	1,710.6		859.9
Segment assets	7,242.8		7,183.4
Reportable Business Segments [Member] \| Offshore Pipelines And Services [Member]
Information by business segment [Abstract]
Revenues from third parties	34.6	34.7
Revenues from related parties	0.6	2.2
Intersegment and intrasegment revenues	0.4	2.3
Total revenues	35.6	39.2
Equity in income (loss) of unconsolidated affiliates	20.2	11.1
Gross operating margin	46.1	39.3
Property, plant and equipment, net (see Note 6)	1,130.1		1,145.1
Investments in unconsolidated affiliates (see Note 7)	487.5		493.7
Intangible assets, net (see Note 8)	39.3		41.6
Goodwill (see Note 8)	82.0		82.0
Segment assets	1,738.9		1,762.4
Reportable Business Segments [Member] \| Petrochemical and Refined Products Services [Member]
Information by business segment [Abstract]
Revenues from third parties	1,349.1	1,530.6
Revenues from related parties	0	0
Intersegment and intrasegment revenues	285.6	437.0
Total revenues	1,634.7	1,967.6
Equity in income (loss) of unconsolidated affiliates	(3.4)	0.4
Gross operating margin	174.6	130.4
Property, plant and equipment, net (see Note 6)	3,042.8		3,047.2
Investments in unconsolidated affiliates (see Note 7)	74.8		75.1
Intangible assets, net (see Note 8)	201.2		374.8
Goodwill (see Note 8)	952.1		781.3
Segment assets	4,270.9		4,278.4
Eliminations [Member]
Information by business segment [Abstract]
Revenues from third parties	0	0
Revenues from related parties	0	0
Intersegment and intrasegment revenues	(4,176.2)	(7,160.4)
Total revenues	(4,176.2)	(7,160.4)
Equity in income (loss) of unconsolidated affiliates	0	0
Gross operating margin	0	0
Adjustments [Member]
Information by business segment [Abstract]
Property, plant and equipment, net (see Note 6)	3,196.6		2,754.7
Investments in unconsolidated affiliates (see Note 7)	0		0
Intangible assets, net (see Note 8)	0		0
Goodwill (see Note 8)	0		0
Segment assets	$ 3,196.6		$ 2,754.7

Amount of revenue from transactions with other operating segments of the same entity.

No definition available.

Name:	epd_IntersegmentAndIntrasegmentRevenues
Namespace Prefix:	epd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of total assets attributed to the reportable segment.

+ References

No definition available.

+ Details

Name:	epd_SegmentAssets
Namespace Prefix:	epd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Revenues from third parties.

+ References

No definition available.

+ Details

Name:	epd_ThirdPartyRevenue
Namespace Prefix:	epd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Operating income before: (i) depreciation, amortization and accretion expense; (ii) non-cash consolidated asset impairment charges; (iii) operating lease expenses for which we do not have the payment obligation; (iv) gains and losses from asset sales and related transactions and (v) general and administrative costs.

+ References

No definition available.

+ Details

Name:	epd_TotalSegmentGrossOperatingMargin
Namespace Prefix:	epd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ 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 210.5-02.12)

-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 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570

+ Details

Name:	us-gaap_EquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

+ Details

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 9

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.12)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 11

-Article 7

+ Details

Name:	us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph ((a)(1),(b))

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_IntangibleAssetsNetExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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 210.5-02.13)

-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 02

-Paragraph 13

-Subparagraph a

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 7

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Related Parties

-URI http://asc.fasb.org/extlink&oid=16382449

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.6-07.1(c))

-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 07

-Paragraph b

-Subparagraph 1

-Article 6

+ Details

Name:	us-gaap_RevenueFromRelatedParties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

+ Details

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_SegmentReportingInformationProfitLossAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConsolidationItemsAxis=us-gaap_MaterialReconcilingItemsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=epd_NglPipelinesAndServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=epd_OffshorePipelinesAndServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=epd_OnshoreCrudeOilPipelinesAndServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=epd_OnshoreNaturalGasPipelinesAndServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=epd_PetrochemicalAndRefinedProductsServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: