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v3.19.3.a.u2

Long-Term Debt (Parenthetical) (Detail) - CAD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Debt Instrument [Line Items] |  |
Maximum long-term borrowing from affiliate | $ 7,750,000,000 |
Cancellation period long-term borrowing from affiliate, days | 370 days |
Capitalized lease obligations for marine services, average imputed rate | 7.50% | 7.10%
Total capitalized lease obligations in current liabilities | $ 18,000,000 | $ 27,000,000
Principal payments on capital leases, in two years | 13,000,000 |
Principal payments on capital leases, in three years | 13,000,000 |
Principal payments on capital leases, in four years | 13,000,000 |
Principal payments on capital leases, in five years | $ 13,000,000 |

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- Definition Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737 + Details
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