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SIGNIFICANT ACCOUNTING POLICIES - REGULATION (Details) - CAD ($) | Dec. 31, 2021 | Dec. 31, 2020
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REGULATION |  |
Regulatory assets (Note 7) | $ 5,865,000,000 | $ 5,629,000,000
Deferral for Depreciation for Phase-In Plans under U.S. GAAP Guidance |  |
REGULATION |  |
Regulatory assets (Note 7) | $ 0 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Period Type: | duration

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- Definition The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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- Details
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