Equity and Distributions, Issuances of Equity (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net Cash Proceeds from Sale of Common Units [Abstract]
Net cash proceeds from the issuance of common units		$ 82.2	$ 538.4	$ 1,073.4
Common units issued in connection with employee compensation (in units)		1,626,041	1,443,586	1,176,103
Common units issued in connection with employee compensation		$ 45.6	$ 39.1	$ 33.7
Treasury Units:
Total of common units repurchased under a buyback program (in units)		2,909,128	1,236,800
Common units acquired in connection with buyback program		$ 81.1	$ 30.8
Phantom units vesting during the period (in units)		3,895,049	3,479,958	2,485,580
Phantom unit and restricted unit awards that vested during the period				3,166,624
Acquisition of treasury units in connection with vesting of equity-based awards (in units)		1,174,446	1,037,522	1,027,798
Capital expenditures		$ 4,531.7	$ 4,223.2	$ 3,101.8
Common units issued in connection with land acquisition (in units)			1,223,242
Land [Member]
Treasury Units:
Property, plant and equipment, additions			$ 85.2
Capital expenditures			$ 55.2
Common units issued in connection with land acquisition (in units)			1,223,242
Phantom Unit Awards [Member]
Treasury Units:
Phantom units vesting during the period (in units)		3,895,049	3,479,958	2,490,081
Treasury Units [Member]
Treasury Units:
Acquisition of treasury units in connection with vesting of equity-based awards (in units)		1,174,446	1,037,522	1,027,798
Common units acquired in connection with phantom unit awards		$ 33.7	$ 27.3	$ 29.5
Junior Debt Obligations [Member]
Net Cash Proceeds from Sale of Common Units [Abstract]
Debt issued under universal shelf registration			$ 700.0	$ 1,700.0
2019 Buyback Program [Member]
Treasury Units:
Total of common units repurchased under a buyback program (in units)		2,909,128
Common units acquired in connection with buyback program		$ 81.1
Amount authorized under 2019 Buyback Program		2,000.0
Remaining available capacity under the 2019 Buyback Program		1,920.0
Legacy Buyback Program [Member]
Treasury Units:
Maximum common units authorized for repurchase under a buyback program (in units)			4,000,000
Total of common units repurchased under a buyback program (in units)			1,236,800
Common units acquired in connection with buyback program			$ 30.8
Universal Shelf Registration [Member] | Senior Debt Obligations [Member]
Net Cash Proceeds from Sale of Common Units [Abstract]
Debt issued under universal shelf registration		2,500.0
Universal Shelf Registration [Member] | Senior Debt Obligations [Member] | Subsequent Event [Member]
Net Cash Proceeds from Sale of Common Units [Abstract]
Debt issued under universal shelf registration	$ 3,000.0
At-the-Market Registration [Member]
Registration Statements and Equity Offerings [Line Items]
Maximum common units authorized for issuance		2,540.0
Net Cash Proceeds from Sale of Common Units [Abstract]
Number of common units issued (in units)				21,807,726
Gross proceeds from the sale of common units				$ 603.1
Net cash proceeds from the issuance of common units				$ 597.0
Remaining units available for issuance		$ 2,540.0
Distribution Reinvestment Plan [Member]
Net Cash Proceeds from Sale of Common Units [Abstract]
Number of common units issued (in units)		2,601,727	19,316,781	18,541,355
Net cash proceeds from the issuance of common units		$ 73.7	$ 523.3	$ 462.9
Distribution reinvestment plan discount rate		0.00%	2.50%
Remaining units available for issuance (in units)		56,320,229
Distribution Reinvestment Plan [Member] | Minimum [Member]
Net Cash Proceeds from Sale of Common Units [Abstract]
Distribution reinvestment plan discount rate range		0.00%
Distribution Reinvestment Plan [Member] | Maximum [Member]
Net Cash Proceeds from Sale of Common Units [Abstract]
Distribution reinvestment plan discount rate range		5.00%
Distribution Reinvestment Plan [Member] | EPCO and its privately held affiliates [Member]
Net Cash Proceeds from Sale of Common Units [Abstract]
Gross proceeds from the sale of common units		$ 29.0	$ 213.0	$ 100.0
Employee Unit Purchase Plan [Member]
Net Cash Proceeds from Sale of Common Units [Abstract]
Number of common units issued (in units)		296,263	545,170	504,664
Net cash proceeds from the issuance of common units		$ 8.5	$ 15.1	$ 13.5
Employer contribution to EUPP		$ 0.9
Remaining units available for issuance (in units)		4,596,585
Distribution Reinvestment and Employee Unit Purchase Plans [Member]
Net Cash Proceeds from Sale of Common Units [Abstract]
Number of common units purchased on the open market and delivered to participants (in units)		2,801,196