QUARTERLY FINANCIAL DATA (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information

	Q1	Q2	Q3		Q4		Total
(unaudited; millions of Canadian dollars, except per share amounts)
20171
Operating revenues	11,146	11,116	9,227		12,889		44,378
Operating income/(loss)	1,358	1,684	1,490		(2,961	)	1,571
Earnings	945	1,241	1,015		65		3,266
Earnings attributable to controlling interests	721	1,000	847		291		2,859
Earnings attributable to common shareholders	638	919	765		207		2,529
Earnings per common share
Basic	0.54	0.56	0.47		0.13		1.66
Diluted	0.54	0.56	0.47		0.12		1.65
2016
Operating revenues	8,795	7,939	8,488		9,338		34,560
Operating income/(loss)	1,674	794	(216	)	329		2,581
Earnings/(loss)	1,347	352	(237	)	847		2,309
Earnings/(loss) attributable to controlling interests	1,286	372	(30	)	441		2,069
Earnings/(loss) attributable to common shareholders	1,213	301	(103	)	365		1,776
Earnings/(loss) per common share
Basic	1.38	0.33	(0.11	)	0.39		1.95
Diluted	1.38	0.33	(0.11	)	0.39		1.93

1 The 2017 quarterly financial data reflects the effect of the Merger Transaction closed on February 27, 2017 (Note 7).