Equity-Based Awards, Profits Interest Awards (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares shares
EPD PubCo II [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price (in dollars per unit) | $ / shares	$ 25.41
Incremental cost due to plan modification	$ 1.2
Vesting period	30 days
Partnership common units contributed by EPCO Holdings (in units) | shares	2,834,198
Class A capital base	$ 66.3	[1]
Class A preference return | $ / shares	$ 0.3900
Estimated fair value of profits interest awards	$ 2.5	[2]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost	$ 2.3	[3]
Recognition period for total unrecognized compensation cost	2 years 1 month 6 days
Estimated Grant Date Fair Value Assumptions [Abstract]
Expected life of award from grant date	7 years
EPD PubCo II [Member] | Minimum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-free interest rate	0.10%
Expected distribution yield	5.90%
Expected unit price volatility	19.00%
EPD PubCo II [Member] | Maximum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-free interest rate	3.00%
Expected distribution yield	7.00%
Expected unit price volatility	40.00%
EPD PrivCo I [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price (in dollars per unit) | $ / shares	$ 25.41
Incremental cost due to plan modification	$ 0.5
Vesting period	30 days
Partnership common units contributed by EPCO Holdings (in units) | shares	1,111,438
Class A capital base	$ 26.0	[1]
Class A preference return | $ / shares	$ 0.3900
Estimated fair value of profits interest awards	$ 0.9	[2]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost	$ 0.2	[3]
Recognition period for total unrecognized compensation cost	2 years 1 month 6 days
Estimated Grant Date Fair Value Assumptions [Abstract]
Expected life of award from grant date	7 years
EPD PrivCo I [Member] | Minimum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-free interest rate	0.10%
Expected distribution yield	6.10%
Expected unit price volatility	19.00%
EPD PrivCo I [Member] | Maximum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-free interest rate	1.60%
Expected distribution yield	6.70%
Expected unit price volatility	40.00%
EPD IV [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	30 days
Partnership common units contributed by EPCO Holdings (in units) | shares	6,400,000
Class A capital base	$ 172.9	[1]
Class A preference return | $ / shares	$ 0.4325
Estimated fair value of profits interest awards	$ 26.7	[2]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost	$ 13.6	[3]
Recognition period for total unrecognized compensation cost	2 years 10 months 24 days
Estimated Grant Date Fair Value Assumptions [Abstract]
Expected life of award from grant date	5 years
EPD IV [Member] | Minimum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-free interest rate	2.80%
Expected distribution yield	6.50%
Expected unit price volatility	27.00%
EPD IV [Member] | Maximum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-free interest rate	2.80%
Expected distribution yield	6.50%
Expected unit price volatility	27.00%
EPCO Unit II [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	30 days
Partnership common units contributed by EPCO Holdings (in units) | shares	1,600,000
Class A capital base	$ 43.2	[1]
Class A preference return | $ / shares	$ 0.4325
Estimated fair value of profits interest awards	$ 6.6	[2]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost	$ 0.3	[3]
Recognition period for total unrecognized compensation cost	2 years 10 months 24 days
Estimated Grant Date Fair Value Assumptions [Abstract]
Expected life of award from grant date	5 years
EPCO Unit II [Member] | Minimum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-free interest rate	1.60%
Expected distribution yield	6.30%
Expected unit price volatility	24.00%
EPCO Unit II [Member] | Maximum [Member]
Estimated Grant Date Fair Value Assumptions [Abstract]
Risk-free interest rate	2.80%
Expected distribution yield	6.80%
Expected unit price volatility	27.00%

[1] Represents the fair market value of EPD common units contributed to each Employee Partnership at the applicable contribution date.

[2] Represents the total fair value of the profits interest awards awarded to the Class B limited partners of each Employee Partnership irrespective of how such costs will be allocated between us and EPCO and its privately held affiliates.  The fair value is as of the grant date or as of the plan modification date, as applicable.

[3] Represents our expected share of the unrecognized compensation cost at December 31, 2020. We expect to recognize our share of the unrecognized compensation cost for PubCo II, PrivCo I, EPD IV and EPCO II over a weighted-average period of 2.1 years, 2.1 years, 2.9 years and 2.9 years, respectively.