Share-Based Payments - Additional Information (Detail) - Employee stock options [member]	3 Months Ended
Jan. 31, 2026 CAD ($) $ / shares	Jan. 31, 2025 CAD ($)
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of share options, granted	1,428,056
Exercise price of options granted \| $ / shares	$ 100.35
Weighted average grant date fair value of options granted	$ 10.68
Increase to equity	$ 8,000,000	$ 8,000,000
Vesting period of 3 Years [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock options vesting percentage	50.00%
Vesting period of 4 Years [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock options vesting percentage	50.00%

Share-based compensation arrangement by share-based payment award vesting rights percentage.

No definition available.

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- Definition

The increase (decrease) in equity. [Refer: Equity]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 106
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-URIDate 2025-03-27

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The exercise price of share options granted.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2025-01-01
-Paragraph 47
-Subparagraph a
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-URIDate 2025-03-27

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- Definition

The number of share options granted in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2025-01-01
-Paragraph 45
-Subparagraph b
-Clause ii
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-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
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-IssueDate 2025-01-01
-Paragraph 31
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-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
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-IssueDate 2025-01-01
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-URIDate 2025-03-27

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- Definition

The weighted average fair value of share options granted during the period at the measurement date. [Refer: Weighted average [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
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-URIDate 2025-03-27

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