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Share-based Payments Arrangement - CHIEF Share-based Compensation Plan (Detail) - CHIEF Telecom Inc. (CHIEF) [Member] | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2019 $ / shares | Jun. 30, 2019 $ / shares | Dec. 31, 2018 $ / shares | Aug. 31, 2018 $ / shares | Jul. 31, 2018 $ / shares | Jun. 30, 2018 $ / shares | Dec. 19, 2017 $ / shares
Grant Date 2015.10.22 [Member] |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |  |  |  |  |
Effective Date | 2015.11.17 |  |  |  |  |  |
Grant Date | 2015.10.22 |  |  |  |  |  |
Stock Options Units | 2,000.00 |  |  |  |  |  |
Exercise Price | $ 34.40 |  | $ 34.40 |  |  |  |
Original price | $ 43.00 |  |  |  |  |  |
Grant Date 2017.12.19 [Member] |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |  |  |  |  |
Effective Date | 2017.12.18 |  |  |  |  |  |
Grant Date | 2017.12.19 |  |  |  |  |  |
Stock Options Units | 950.00 |  |  |  |  |  |
Exercise Price | $ 135.60 | $ 135.60 | 140.60 | $ 140.60 | $ 144.10 | $ 144.10 | $ 147.00
Original price | $ 147.00 |  |  |  |  |  |
Granted on October 31, 2018 [Member] |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |  |  |  |  |  |
Effective Date | 2017.12.18 |  |  |  |  |  |
Grant Date | 2018.10.31 |  |  |  |  |  |
Stock Options Units | 50.00 |  |  |  |  |  |
Exercise Price | $ 141.70 | $ 141.70 | $ 147.00 |  |  |  |
Original price | $ 147.00 |  |  |  |  |  |

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- Definition The date on which share-based payment arrangements are granted. [Refer: Share-based payment arrangements [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph IG23 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_IG23&doctype=Implementation%20Guidance -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 2 -IssueDate 2019-01-01 -Paragraph 45 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_a&doctype=Standard -URIDate 2019-03-27 + Details
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