CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions		12 Months Ended
		Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Operating revenues:
Commodity sales		$ 1,785.6	[1]	$ 2,646.4	[2]	$ 5,693.9	[3]
Transportation and other services		2,696.3	[1]	2,499.7	[2]	2,270.8	[3]
Total operating revenues		4,481.9	[1]	5,146.1	[2]	7,964.7	[3]
Operating expenses:
Commodity costs		1,659.1		2,372.9		5,145.9
Environmental costs, net of recoveries (Note 25)		2.2		3.1		97.3
Operating and administrative		866.5		971.3		934.4
Power		277.4		259.5		226.6
Depreciation and amortization (Notes 11 and 14)		580.9		536.2		458.2
Asset impairment (Note 11)		767.7		74.8		15.6
Goodwill impairment (Note 15)		0.0		246.7		0.0
Costs and Expenses, Total		4,153.8	[4]	4,464.5	[5]	6,878.0
Operating income		328.1		681.6		1,086.7
Interest expense, net (Notes 17 and 21)		(445.5)		(322.0)		(403.2)
Allowance for equity used during construction (Note 6)		45.5		70.3		57.2
Other income (Note 13)		31.5		29.3		8.9
Income (loss) before income tax expense		(40.4)		459.2		749.6
Income tax expense (Note 22)		(0.9)		(4.9)		(9.6)
Net income (loss)		(41.3)		454.3		740.0
Less: Net income (loss) attributable to:
Noncontrolling interest (Note 19)		26.4		221.1		263.3
Series 1 preferred unit distributions		90.0		90.0		90.0
Accretion of discount on Series 1 preferred units		4.7		11.2		14.9
Net income (loss) attributable to general and limited partner ownership interests in Enbridge Energy Partners, L.P.		(162.4)		132.0		371.8
Net income (loss) allocable to common units and i-units		$ (376.5)		$ (84.8)		$ 218.4
Net income (loss) per common unit and i-unit (basic and diluted) (Note 4)	[6]	$ (1.08)		$ (0.25)		$ 0.67
Weighted average common units and i-units outstanding (basic and diluted)		348.0		339.1		328.2
Cash distributions paid per limited partner unit outstanding (in dollars per share)		$ 2.33		$ 2.31		$ 2.20
Third Party [Member]
Operating revenues:
Commodity sales		$ 1,776.2		$ 2,573.4		$ 5,487.8
Transportation and other services		2,589.1		2,369.6		2,191.8
Operating expenses:
Commodity costs		1,621.3		2,295.1		5,026.7
Operating and administrative		429.1		501.2		462.4
Affiliated Entity [Member]
Operating revenues:
Commodity sales		9.4		73.0		206.1
Transportation and other services		107.2		130.1		79.0
Operating expenses:
Commodity costs		37.8		77.8		119.2
Operating and administrative		$ 437.4		$ 470.1		$ 472.0

[1] There were no intersegment revenues for the year ended December 31, 2016.

[2] There were no intersegment revenues for the year ended December 31, 2015.

[3] There were no intersegment revenues for the year ended December 31, 2014.

[4] Third quarter 2016 operating expenses were impacted by an asset impairment of $756.7 million. For more information, refer to Note 11. Property, Plant and Equipment.

[5] Second quarter 2015 operating expenses were impacted by a goodwill impairment of $246.7 million. For more information, refer to Note 15. Goodwill Impairment.

[6] For the years ended December 31, 2016, 2015 and 2014, 43,201,310 anti-dilutive Preferred Units and 66,100,000 anti-dilutive Class D units were excluded from the if-converted method of calculating diluted earnings per unit. For the years ended December 31, 2016 and 2015, 18,114,975 anti-dilutive Class E units were excluded from the if-converted method of calculating diluted earnings per unit.