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Contingent Liabilities - Additional Information (Detail) $ in Millions, $ in Millions |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Sep. 26, 2023 USD ($) | Sep. 26, 2023 CAD ($) | Nov. 02, 2016 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2023 CAD ($) | Sep. 30, 2023
Loss Contingencies [Line Items] |  |  |  |  |  |
Complaint filling date |  |  |  |  |  | November 2016
Name of plaintiff |  |  |  |  |  | SNC ATP
Estimated damages from defendants |  |  | $ 56.0 |  |  |
Defendants And Plaintiff Settlement Agreement [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Total settlement required to be paid | $ 3.2 | $ 4.3 |  |  |  |
Total settlement previously paid | $ 1.8 | $ 2.5 |  |  |  |
Total settlement paid |  |  |  | $ 1.4 | $ 1.8 |

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