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Share-based Payments Arrangement - CHIEF's Outstanding Stock Options (Detail) - CHIEF Telecom Inc. (CHIEF) [Member] | 12 Months Ended
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Dec. 31, 2024 $ / shares | Dec. 31, 2023 $ / shares | Dec. 31, 2022 $ / shares
Granted on December 19, 2017 [Member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |
Number of options, Options outstanding at beginning of the year |  | 0 | 213.25
Number of options, Options exercised |  |  | (213.25)
Number of options, Options forfeited |  |  | 0
Number of options, Options outstanding at end of the year |  |  | 0
Number of options, Options exercisable at end of the year |  |  | 0
Weighted-average exercise price, Options outstanding at beginning of the year |  | $ 0 | $ 128.7
Weighted average exercise price, Options exercised |  |  | 124.7
Weighted average exercise price, Options forfeited |  |  | 0
Weighted-average exercise price, Options outstanding at end of the year |  |  | 0
Weighted average exercise price, Options exercisable at end of the year |  |  | $ 0
Number of options, Weighted average remaining contractual life (years) |  |  | 0 years
Granted on October 31, 2018 [Member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |
Number of options, Options outstanding at beginning of the year |  | 0 | 10.5
Number of options, Options exercised |  |  | (10.5)
Number of options, Options forfeited |  |  | 0
Number of options, Options outstanding at end of the year |  |  | 0
Number of options, Options exercisable at end of the year |  |  | 0
Weighted-average exercise price, Options outstanding at beginning of the year |  | $ 0 | $ 134.5
Weighted average exercise price, Options exercised |  |  | 130.3
Weighted average exercise price, Options forfeited |  |  | 0
Weighted-average exercise price, Options outstanding at end of the year |  |  | 0
Weighted average exercise price, Options exercisable at end of the year |  |  | $ 0
Number of options, Weighted average remaining contractual life (years) |  |  | 9 months 29 days
Granted on November 13, 2020 [Member] |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |
Number of options, Options outstanding at beginning of the year | 93 | 142.25 | 194
Number of options, Options exercised | (85) | (47) | (51)
Number of options, Options forfeited | (1) | (2.25) | (0.75)
Number of options, Options outstanding at end of the year | 7 | 93 | 142.25
Number of options, Options exercisable at end of the year | 7 | 0 | 0.5
Weighted-average exercise price, Options outstanding at beginning of the year | $ 171.7 | $ 193.5 | $ 199.7
Weighted average exercise price, Options exercised | 166.5 | 171.7 | 193.5
Weighted average exercise price, Options forfeited | 0 | 0 | 0
Weighted-average exercise price, Options outstanding at end of the year | 166.5 | 171.7 | 193.5
Weighted average exercise price, Options exercisable at end of the year | $ 166.5 | $ 0 | $ 193.5
Number of options, Weighted average remaining contractual life (years) | 10 months 13 days | 1 year 10 months 13 days | 2 years 10 months 13 days

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