Equity-Based Awards, Phantom Unit Awards (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Summary of awards activity, equity instruments other than options, additional disclosures [Abstract]
Cash payments made in connection with DERs				$ 10.5	$ 8.6
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]			6,836,920
Vested (in units)				(3,561,704)
Forfeited (in units)				(182,095)
End of period (in units)		13,426,398		13,426,398
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]			27.58
Forfeited weighted-average grant date fair value per unit (in dollars per unit)	[2]			27.18
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				$ 189.7
Estimated forfeiture rate				3.00%
Cash payments made in connection with DERs		$ 6.0	$ 4.7	$ 10.5	8.6
Total intrinsic value of phantom unit awards that vested during period		4.7	$ 3.1	101.7	$ 85.1
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost		209.3		$ 209.3
Recognition period for total unrecognized compensation cost				2 years 2 months 12 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)				$ 28.55
Phantom Unit Awards [Member] | Enterprise [Member]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation cost		$ 178.2		$ 178.2

[1] The aggregate grant date fair value of phantom unit awards issued during 2019 was $189.7 million based on a grant date market price of EPD common units ranging from $27.75 to $28.55 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.