Goodwill - Summary of Discount Rates and Perpetual Growth Rates (Detail) |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Shinsegi Telecom, Inc. [member] | ||
| Disclosure of reconciliation of changes in goodwill [line items] | ||
| Annual discount rate | 4.80% | 5.20% |
| Pre-tax annual discount rate | 6.50% | 7.00% |
| Annual growth rate | 0.00% | 0.00% |
| SK Broadband Co., Ltd. [member] | ||
| Disclosure of reconciliation of changes in goodwill [line items] | ||
| Annual discount rate | 5.00% | 6.00% |
| Pre-tax annual discount rate | 6.30% | 7.60% |
| Annual growth rate | 1.00% | 1.00% |
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- Definition The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Total for all cash-generating units [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The growth rate used to extrapolate cash flow projections beyond the period covered by the most recent budgets/forecasts for a cash-generating unit (group of units). [Refer: Total for all cash-generating units [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. No definition available.
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- Definition PreTax annual discount rate No definition available.
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