Equity-Based Awards, Phantom Unit Awards (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract]
Cash payments made in connection with DERs				$ 16.4	$ 13.2
Phantom Unit Awards [Member]
Summary of awards activity, equity instruments other than options [Roll Forward]
Beginning of period (in units)				10,333,277
Granted (in units)	[1]			6,851,920
Vested (in units)				(3,810,666)
Forfeited (in units)				(268,621)
End of period (in units)		13,105,910		13,105,910
Phantom units outstanding, weighted-average grant date fair value [Roll Forward]
Weighted-average grant date fair value per unit, at beginning of period (in dollars per unit)	[2]			$ 26.97
Granted weighted-average grant date fair value per unit (in dollars per unit)	[1],[2]			27.75
Vested weighted-average grant date fair value per unit (in dollars per unit)	[2]			27.54
Forfeited weighted-average grant date fair value per unit (in dollars per unit)	[2]			27.21
Weighted-average grant date fair value per unit, at end of period (in dollars per unit)	[2]	$ 27.21		$ 27.21
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract]
Aggregate grant date fair value				$ 190.2
Estimated forfeiture rate				3.00%
Cash payments made in connection with DERs		$ 5.9	$ 4.6	$ 16.4	13.2
Total intrinsic value of phantom unit awards that vested during period		7.2	$ 4.5	108.9	$ 89.6
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost		172.5		$ 172.5
Recognition period for total unrecognized compensation cost				2 years 1 month 6 days
Phantom Unit Awards [Member] | Minimum [Member]
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract]
Grant date market price of common units (in dollars per unit)				$ 27.75
Phantom Unit Awards [Member] | Maximum [Member]
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract]
Grant date market price of common units (in dollars per unit)				$ 29.29
Phantom Unit Awards [Member] | Enterprise [Member]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost		$ 144.2		$ 144.2

[1] The aggregate grant date fair value of phantom unit awards issued during 2019 was $190.2 million based on a grant date market price of EPD common units ranging from $27.75 to $29.29 per unit.  An estimated annual forfeiture rate of 3.0% was applied to these awards.

[2] Determined by dividing the aggregate grant date fair value of awards (before an allowance for forfeitures) by the number of awards issued.