EQUITY INVESTMENTS (Tables)

12 Months Ended

Dec. 31, 2017

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Equity Investments

(millions of Canadian $)	Ownership   Interest at   December 31, 2017		Income/(Loss) from Equity Investments						Equity Investments
			year ended December 31						at December 31
			2017		2016		2015		2017	2016
Canadian Natural Gas Pipelines
TQM	50.0	%	11		12		12		68	71
U.S. Natural Gas Pipelines
Northern Border1	50.0	%	87		92		85		641	597
Iroquois2	50.0	%	59		54		51		280	309
Millennium3	47.5	%	66		33		—		291	295
Pennant Midstream3	47.0	%	11		6		—		228	246
Other	Various		17		29		26		92	93
Mexico Natural Gas Pipelines
Sur de Texas4	60.0	%	66		(3	)	—		399	255
TransGas	46.5	%	(12	)	—		5		—	28
Liquids Pipelines
Grand Rapids5	50.0	%	17		(1	)	—		996	876
Other6	Various		(20	)	—		—		20	39
Energy
Bruce Power7	48.4	%	434		293		249		2,987	3,356
Portlands Energy8	50.0	%	31		33		30		301	313
ASTC Power Partnership	50.0	%	—		(37	)	(23	)	—	—
Other	Various		6		3		5		63	66
			773		514		440		6,366	6,544

1 At December 31, 2017, the difference between the carrying value of the investment and the underlying equity in the net assets of Northern Border Pipeline Company was US$115 million (2016 – US$116 million) due to the fair value assessment of assets at the time of acquisition.

2 At December 31, 2017, the difference between the carrying value of the investment and the underlying equity in the net assets of Iroquois was US$41 million (2016 – US$48 million) due mainly to the fair value assessment of the assets at the time of acquisition.

3 Acquired as part of Columbia on July 1, 2016. Income from Equity investments reflects equity earnings from the date of acquisition.

4 TCPL has an ownership interest of 60.0 per cent in Sur de Texas, which as a jointly controlled entity applies the equity method of accounting. Income from equity investments includes amounts recorded in the Corporate segment.

5 Grand Rapids was placed in service in August 2017. At December 31, 2017, the difference between the carrying value of the investment and the underlying equity in the net assets of Grand Rapids was $105 million (2016 – $86 million) due mainly to interest capitalized during construction and the fair value of guarantees.

6 Includes investments in Canaport Energy East Marine Terminal Limited Partnership and HoustonLink Pipeline Company LLC. At December 31, 2017, the Canaport Energy East Marine Terminal Limited Partnership investment was nil.

7 At December 31, 2017, the difference between the carrying value of the investment and the underlying equity in the net assets of Bruce Power was $902 million (2016 – $942 million) due to the fair value assessment of assets at the time of acquisitions.

8 At December 31, 2017, the difference between the carrying value of the investment and the underlying equity in the net assets of Portlands Energy was $73 million (2016 – $70 million) due mainly to interest capitalized during construction.

Summary of Financial Information of Equity Investments

year ended December 31	2017		2016		2015
(millions of Canadian $)
Income
Revenues	4,913		4,336		4,337
Operating and other expenses	(2,993	)	(3,068	)	(3,142	)
Net income	1,636		1,080		1,046
Net income attributable to TCPL	773		514		440

at December 31	2017		2016
(millions of Canadian $)
Balance Sheet
Current assets	2,176		1,669
Non-current assets	17,869		15,853
Current liabilities	(1,577	)	(1,120	)
Non-current liabilities	(8,217	)	(5,867	)