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Income Taxes (Parenthetical) (Detail) | Jun. 28, 2019 | Nov. 02, 2017
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Alberta government [Member] |  |
Schedule Of Income Tax [Line Items] |  |
Increase/Decrease in the provincial tax rate | (4.00%) |
Alberta government [Member] | Minimum |  |
Schedule Of Income Tax [Line Items] |  |
Provincial tax rate | 8.00% |
Alberta government [Member] | Maximum |  |
Schedule Of Income Tax [Line Items] |  |
Provincial tax rate | 12.00% |
British columbia government [Member] |  |
Schedule Of Income Tax [Line Items] |  |
Increase/Decrease in the provincial tax rate |  | 1.00%
British columbia government [Member] | Minimum |  |
Schedule Of Income Tax [Line Items] |  |
Provincial tax rate |  | 11.00%
British columbia government [Member] | Maximum |  |
Schedule Of Income Tax [Line Items] |  |
Provincial tax rate |  | 12.00%

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- Details
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