REVENUE (Tables)

9 Months Ended

Sep. 30, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

	Liquids Pipelines	Gas Transmission and Midstream		Gas Distribution	Green Power and Transmission	Energy Services	Eliminations and Other		Consolidated
Three months ended September 30, 2018
(millions of Canadian dollars)
Transportation revenue	2,190	979		97	—	—	—		3,266
Storage and other revenue	31	53		55	—	—	—		139
Gas gathering and processing revenue	—	200		—	—	—	—		200
Gas distribution revenue	—	—		478	—	—	—		478
Electricity and transmission revenue	—	—		—	115	—	—		115
Commodity sales	—	298		—	—	—	—		298
Total revenue from contracts with customers	2,221	1,530		630	115	—	—		4,496
Commodity sales	—	—		—	—	6,621	—		6,621
Other revenue1	222	(6	)	11	2	—	(1	)	228
Intersegment revenue	86	4		4	—	25	(119	)	—
Total revenue	2,529	1,528		645	117	6,646	(120	)	11,345

	Liquids Pipelines		Gas Transmission and Midstream	Gas Distribution	Green Power and Transmission	Energy Services	Eliminations and Other		Consolidated
Nine months ended September 30, 2018
(millions of Canadian dollars)
Transportation revenue	6,327		2,889	487	—	—	—		9,703
Storage and other revenue	113		164	173	—	—	—		450
Gas gathering and processing revenue	—		636	—	—	—	—		636
Gas distribution revenue	—		—	3,260	—	—	—		3,260
Electricity and transmission revenue	—		—	—	417	—	—		417
Commodity sales	—		1,630	—	—	—	—		1,630
Total revenue from contracts with customers	6,440		5,319	3,920	417	—	—		16,096
Commodity sales	—		—	—	—	19,008	—		19,008
Other revenue1	(308	)	2	22	6	—	(10	)	(288	)
Intersegment revenue	256		8	10	—	106	(380	)	—
Total revenue	6,388		5,329	3,952	423	19,114	(390	)	34,816

1  Includes mark-to-market gains/(losses) from our hedging program.

Contract with Customer, Asset and Liability

	Receivables	Contract Assets	Contract Liabilities
(millions of Canadian dollars)
Balance as at January 1, 2018	2,475	290	992
Balance as at September 30, 2018	1,625	267	1,203

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The below table presents the cumulative, immaterial effect of the adoption of ASC 606 on our Consolidated Statement of Financial Position as at January 1, 2018 on each affected financial statement line item. For the three and nine months ended September 30, 2018, the effect of the adoption of ASC 606 on our Consolidated Statement of Earnings wasnot material.

	Balance at December 31, 2017		Adjustments Due to ASC 606		Balance at January 1, 2018
(millions of Canadian dollars)
Assets
Deferred amounts and other assets	6,442		(170	)	6,272
Property, plant and equipment, net	90,711		112		90,823
Liabilities and equity
Accounts payable and other	9,478		62		9,540
Other long-term liabilities	7,510		66		7,576
Deferred income taxes	9,295		(62	)	9,233
Redeemable noncontrolling interests	4,067		(38	)	4,029
Deficit	(2,468	)	(86	)	(2,554	)

	Liquids Pipelines	Gas Transmission and Midstream	Gas Distribution	Green Power and Transmission	Energy Services	Consolidated
Three months ended September 30, 2018
(millions of Canadian dollars)
Revenue from products transferred at a point in time1	—	298	20	—	—	318
Revenue from products and services transferred over time2	2,221	1,232	610	115	—	4,178
Total revenue from contracts with customers	2,221	1,530	630	115	—	4,496

	Liquids Pipelines	Gas Transmission and Midstream	Gas Distribution	Green Power and Transmission	Energy Services	Consolidated
Nine months ended September 30, 2018
(millions of Canadian dollars)
Revenue from products transferred at a point in time1	—	1,630	65	—	—	1,695
Revenue from products and services transferred over time2	6,440	3,689	3,855	417	—	14,401
Total revenue from contracts with customers	6,440	5,319	3,920	417	—	16,096

1 Revenue from sales of crude oil, natural gas and NGLs.

2 Revenue from crude oil and natural gas pipeline transportation, storage, natural gas gathering, compression and treating, natural gas distribution, natural gas storage services and electricity sales.