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Equity-based Awards, Profits Interest Awards (Details) - Profits Interest Awards [Member] $ in Millions | 6 Months Ended
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Jun. 30, 2016 USD ($) shares
EPD PubCo I [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting period | 30 days |
Common units owned by Employee Partnership (in units) | shares | 2,723,052 |
Class A Capital Base | $ 63.5 | [1]
Class A Partner Preferred Return Rate (in hundredths) | 0.066638 | [2]
Expected Liquidation Date | Feb. 01, 2020 |
Aggregate grant date fair value | $ 13.2 | [3]
Unrecognized Compensation Expense [Abstract] |  |
Recognition period for total unrecognized compensation cost (in years) | 3 years 7 months 6 days |
Estimated Grant Date Fair Value Assumptions [Abstract] |  |
Expected Life of Award (in years) | 4 years |
Risk-Free Interest Rate (in hundredths) | 1.09% |
Expected Distribution Yield (in hundredths) | 6.68% |
Expected Unit Price Volatility (in hundredths) | 40.00% |
EPD PubCo I [Member] | Enterprise [Member] |  |
Unrecognized Compensation Expense [Abstract] |  |
Unrecognized compensation cost | $ 11.9 | [4]
EPD PubCo II [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting period | 30 days |
Common units owned by Employee Partnership (in units) | shares | 2,834,198 |
Class A Capital Base | $ 66.1 | [1]
Class A Partner Preferred Return Rate (in hundredths) | 0.066638 | [2]
Expected Liquidation Date | Feb. 01, 2021 |
Aggregate grant date fair value | $ 14.8 | [3]
Unrecognized Compensation Expense [Abstract] |  |
Recognition period for total unrecognized compensation cost (in years) | 4 years 7 months 6 days |
Estimated Grant Date Fair Value Assumptions [Abstract] |  |
Expected Life of Award (in years) | 5 years |
Risk-Free Interest Rate (in hundredths) | 1.25% |
Expected Distribution Yield (in hundredths) | 6.68% |
Expected Unit Price Volatility (in hundredths) | 40.00% |
EPD PubCo II [Member] | Enterprise [Member] |  |
Unrecognized Compensation Expense [Abstract] |  |
Unrecognized compensation cost | $ 13.6 | [4]
EPD PubCo III [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting period | 30 days |
Common units owned by Employee Partnership (in units) | shares | 105,000 |
Class A Capital Base | $ 2.5 | [1]
Class A Partner Preferred Return Rate (in hundredths) | 0.065381 | [2]
Expected Liquidation Date | Apr. 01, 2020 |
Aggregate grant date fair value | $ 0.5 | [3]
Unrecognized Compensation Expense [Abstract] |  |
Recognition period for total unrecognized compensation cost (in years) | 3 years 9 months 18 days |
Estimated Grant Date Fair Value Assumptions [Abstract] |  |
Expected Life of Award (in years) | 4 years |
Risk-Free Interest Rate (in hundredths) | 1.04% |
Expected Distribution Yield (in hundredths) | 6.18% |
Expected Unit Price Volatility (in hundredths) | 40.00% |
EPD PubCo III [Member] | Enterprise [Member] |  |
Unrecognized Compensation Expense [Abstract] |  |
Unrecognized compensation cost | $ 0.5 | [4]
EPD PrivCo I [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting period | 30 days |
Common units owned by Employee Partnership (in units) | shares | 1,111,438 |
Class A Capital Base | $ 25.9 | [1]
Class A Partner Preferred Return Rate (in hundredths) | 0.066638 | [2]
Expected Liquidation Date | Feb. 01, 2021 |
Aggregate grant date fair value | $ 5.8 | [3]
Unrecognized Compensation Expense [Abstract] |  |
Recognition period for total unrecognized compensation cost (in years) | 4 years 7 months 6 days |
Estimated Grant Date Fair Value Assumptions [Abstract] |  |
Expected Life of Award (in years) | 5 years |
Risk-Free Interest Rate (in hundredths) | 1.25% |
Expected Distribution Yield (in hundredths) | 6.68% |
Expected Unit Price Volatility (in hundredths) | 40.00% |
EPD PrivCo I [Member] | Enterprise [Member] |  |
Unrecognized Compensation Expense [Abstract] |  |
Unrecognized compensation cost | $ 1.1 | [4]
[1] | Represents the fair market value of the Enterprise common units contributed at the contribution date.
[2] | For each period and Employee Partnership, the Class A Preference Return amount equals the Class A Capital Base, after adjusting for certain retained cash distributions and other amounts as defined in the underlying agreements, multiplied by the applicable Class A Partner Preferred Return Rate divided by 365 or 366 days, as the case may be during such calendar year, multiplied by the number of days in the applicable period.
[3] | Represents the total grant date fair value of the profits interest awards irrespective of how such costs will be allocated between us and EPCO and its privately held affiliates.
[4] | Represents our expected share of the unrecognized compensation cost at June 30, 2016. We expect to recognize our share of the unrecognized compensation cost for EPD PubCo I, EPD PubCo II, EPD PubCo III and EPD PrivCo I over a weighted-average period of 3.6 years, 4.6 years, 3.8 years and 4.6 years, respectively.

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- Definition The Class A Preference Return equals the Class A Capital Base, after adjusting for certain retained cash distributions and other amounts as defined in the underlying agreements, multiplied by the stated rate divided by 365 or 366 days, as the case may be during such calendar year, multiplied by the number of days in the applicable period. + References No definition available. + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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