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PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - CAD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Property, Plant and Equipment [Line Items] |  |  |
Total property, plant and equipment | $ 117,954 | $ 113,963 |
Total accumulated depreciation | (23,383) | (20,240) |
Property, plant and equipment, net | $ 94,571 | 93,723 | $ 94,540
Pipelines |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Weighted Average Depreciation Rate (percent) | 2.70% |  |
Total property, plant and equipment | $ 57,391 | 56,330 |
Facilities and equipment |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Weighted Average Depreciation Rate (percent) | 2.80% |  |
Total property, plant and equipment | $ 30,057 | 29,287 |
Land and right-of-way |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Weighted Average Depreciation Rate (percent) | 2.10% |  |
Total property, plant and equipment | $ 2,924 | 2,947 |
Gas mains, services and other |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Weighted Average Depreciation Rate (percent) | 2.70% |  |
Total property, plant and equipment | $ 12,476 | 12,194 |
Storage |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Weighted Average Depreciation Rate (percent) | 2.40% |  |
Total property, plant and equipment | $ 2,872 | 2,748 |
Wind turbines, solar panels and other |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Weighted Average Depreciation Rate (percent) | 4.10% |  |
Total property, plant and equipment | $ 4,877 | 4,914 |
Other |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Weighted Average Depreciation Rate (percent) | 8.10% |  |
Total property, plant and equipment | $ 1,595 | 1,486 |
Under construction |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Weighted Average Depreciation Rate (percent) | 0.00% |  |
Total property, plant and equipment | $ 5,762 | $ 4,057 |

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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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