INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2020

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Schedule of intangible assets

The following table provides the weighted average amortization rate, gross carrying value, accumulated amortization and net carrying value for each of our major classes of intangible assets:

	Weighted Average			Accumulated
December 31, 2020	Amortization Rate		Cost	Amortization	Net
(millions of Canadian dollars)
Customer relationships	5.0	%	724	(139)	585
Power purchase agreements	4.5	%	63	(18)	45
Project agreement1	4.0	%	153	(21)	132
Software	10.5	%	2,292	(1,334)	958
Other intangible assets2	2.7	%	456	(96)	360
			3,688	(1,608)	2,080

	Weighted Average			Accumulated
December 31, 2019	Amortization Rate		Cost	Amortization	Net
(millions of Canadian dollars)
Customer relationships	5.0	%	734	(104)	630
Power purchase agreements	4.5	%	64	(16)	48
Project agreement1	4.0	%	156	(16)	140
Software	11.0	%	2,115	(1,141)	974
Other intangible assets2	2.9	%	463	(82)	381
			3,532	(1,359)	2,173

1 Represents a project agreement acquired from the merger of Enbridge and Spectra Energy.

2 The measurement of weighted average amortization rate excludes non-depreciable intangible assets.

Schedule of future amortization expense

The following table presents our expected amortization expense associated with existing intangible assets for the years indicated as follows:

	2021	2022	2023	2024	2025
Forecast of amortization expense (millions of Canadian dollars)	298	270	245	222	202