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NONCONTROLLING INTERESTS
 9 Months Ended
Sep. 30, 2017
Noncontrolling Interest [Abstract]  
NONCONTROLLING INTERESTS
10. NONCONTROLLING INTERESTS
 
Three months ended September 30,
 
Nine months ended September 30,
  
2017
 
2016
 
2017
 
2016
 
 
 
 
 
 
 
 
  
(in millions)
Eastern Access Interests
$
37.6

 
$
48.3

 
$
113.9

 
$
153.0

U.S. Mainline Expansion Interests
39.1

 
39.0

 
108.3

 
99.7

North Dakota Pipeline Company Interests
1.8

 
(269.6
)
 
18.6

 
(269.6
)
Line 3 Replacement Interests
8.1

 
—

 
18.7

 
—

Enbridge Holdings (DakTex) L.L.C. Interests
16.3

 
—

 
21.1

 
—

Midcoast Energy Partners, L.P. – Discontinued Operations
—

 
(9.6
)
 
(18.8
)
 
(35.9
)
Total
$
102.9

 
$
(191.9
)
 
$
261.8

 
$
(52.8
)

On June 28, 2017, we completed the Midcoast sale to our General Partner, reducing our noncontrolling interest in MEP to nil upon the closing of the sale. For further details refer to Note 6 - Dispositions, Asset Impairment and Discontinued Operations
On April 27, 2017, we finalized the previously announced joint funding arrangement with our General Partner for our investment in the Bakken Pipeline System. Our equity investment in MarEn is held by our consolidated subsidiary, DakTex. Under the terms of the agreement, our General Partner contributed approximately $1.14 billion in exchange for Class A units in DakTex to obtain its 75% ownership interest while we retain the remaining 25%. NCI represent our General Partner’s 75% interest. For further details refer to Note 14 - Related Party Transactions.
On January 26, 2017, we entered into a joint funding arrangement with our General Partner for the U.S. Line 3 Replacement Program (U.S. L3R Program). Under the term of the arrangement, our General Partner will fund 99% and we will fund 1% of the capital costs of the U.S. L3R Program. The carrying amount of our 99% interest in the project at the transaction date was $411.0 million and was recorded as an increase to noncontrolling interest. The $39.1 million difference between the cash received and the carrying amount was recorded as an increase to the capital accounts of our common units, i-units, and General Partner interest on a pro-rated basis. For further details, refer to Note 14 - Related Party Transactions.
On January 26, 2017, we exercised our option under the Eastern Access Project joint funding arrangement to acquire an additional 15% interest in the Eastern Access Project, at its book value of approximately $360 million, which is now in service. This transaction reduced noncontrolling interest by approximately $360 million. We and our General Partner own 40% and 60% of the partnership interest in Series EA of Enbridge Energy, Limited Partnership (OLP), which we refer to as the EA interest, respectively. For further details, refer to Note 14 - Related Party Transactions.