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v3.21.1

Related Paty Transactions (Narrative) (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
NSPML | Regulated |  |
Related Party Transaction [Line Items] |  |
Purchases from Related Party | $ 139 | $ 107
M&NP | Non-Regulated |  |
Related Party Transaction [Line Items] |  |
Purchases from Related Party | $ 18 | $ 63

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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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- Definition Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References No definition available. + Details
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- Details
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- Details
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- Details
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