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v3.21.1

Segmented information - Information on Operations by Geographic Area (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |
Revenue | $ 1,677,058 | $ 1,626,392
Property, plant and equipment | 8,241,838 | 7,240,980
Intangible assets | 114,913 | 47,616
Canada |  |
Segment Reporting Information [Line Items] |  |
Revenue | 153,569 | 88,697
Property, plant and equipment | 884,195 | 752,016
Intangible assets | 23,123 | 23,795
International |  |
Segment Reporting Information [Line Items] |  |
Revenue | 48,402 | 0
Property, plant and equipment | 691,628 | 0
Intangible assets | 66,965 | 0
United States |  |
Segment Reporting Information [Line Items] |  |
Revenue | 1,475,087 | 1,537,695
Property, plant and equipment | 6,666,015 | 6,488,964
Intangible assets | $ 24,825 | $ 23,821

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