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Income Taxes - Summary of Income Tax Rate (Detail) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Income Tax Disclosure [Abstract] |  |  |
Canadian statutory income tax rate |  | 26.50% | 26.50%
Tax on repatriation of foreign earnings |  | 2.90% | 4.40%
Net effect of losses not benefited |  | 1.80% | 8.10%
Re-measurement of deferred tax assets | [1] | 1.50% | 0.00%
Foreign exchange re-measurement | [2] | 1.20% | 3.40%
Impairment of investments [note 2] |  | 0.00% | 8.60%
Manufacturing and processing profits deduction |  | (0.20%) | (0.10%)
Valuation allowance on deferred tax assets |  | (0.70%) | 0.60%
Earnings of equity accounted investees |  | (1.30%) | (3.60%)
Reserve for uncertain tax positions |  | (2.50%) | (4.00%)
Research and development tax credits |  | (3.40%) | (3.70%)
Foreign rate differentials |  | (3.90%) | (7.30%)
Others |  | (1.60%) | (0.20%)
Effective income tax rate |  | 20.30% | 32.70%
[1] | Re-measurement of deferred tax assets of a China subsidiary.
[2] | Includes foreign exchange gains reported on U.S. dollar denominated assets for Mexican tax purposes that are not recognized for GAAP purposes and losses related to the re-measurement of financial statement balances of foreign subsidiaries, primarily in Mexico, that are maintained in a currency other than their functional currency.

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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