QUARTERLY FINANCIAL DATA (unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

QUARTERLY FINANCIAL DATA (unaudited)

Schedule of selected unaudited financial data

Quarter ended (millions of dollars except per common unit amounts)	Mar 31	Jun 30	Sept 30	Dec 31
2015
Transmission revenues	87	85	83	89
Equity earnings(a)	31	15	17	34
Impairment of equity-method investment(b)	–	–	–	(199)
Net income (loss)	64	44	49	(137)
Net income (loss) attributable to controlling interests	57	44	49	(137)
Net income (loss) per common unit	$ 0.88	$ 0.66	$ 0.70	(2.24)
Cash distribution paid	55	55	59	59
2014
Transmission revenues	87	82	80	87
Equity earnings(a)	33	18	15	22
Net income	67	45	39	53
Net income attributable to controlling interests	57	37	31	47
Net income per common unit	$ 0.90	$ 0.58	$ 0.48	$ 0.71
Cash distributions paid	51	52	54	55

(a)	Equity Earnings represents our share in investee's earnings and does not include any impairment charge on equity method goodwill included as part of the carrying value of our investments in unconsolidated affiliates.
(b)	During the three months ended December 31, 2015, we recognized an impairment charge on our investment in Great Lakes amounting to $199 million. No impairment has been identified on our investment in Northern Border (Refer to Note 4).