Statements of Cash Flows - Changes in Assets and Liabilities from Operating Activities (Detail) - KRW (₩) ₩ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Adjustments to reconcile profit (loss) [abstract] | |||
| Accounts receivable – trade | ₩ 47,995 | ₩ (69,043) | ₩ (46,531) |
| Accounts receivable – other | (44,132) | (51,028) | 79,223 |
| Advanced payments | 15,478 | 4,503 | 3,986 |
| Prepaid expenses | (361,744) | (11,233) | (2,262) |
| Inventories | 33,402 | (35,661) | (17,549) |
| Long-term accounts receivable – other | 34,179 | 135,823 | 66,036 |
| Contract assets | (52,820) | (6,966) | 3,877 |
| Guarantee deposits | 2,013 | 15,552 | (2,117) |
| Accounts payable – trade | (20,297) | (10,039) | 50,442 |
| Accounts payable – other | 233,283 | (161,778) | (188,318) |
| Withholdings | 94,239 | 138,672 | (3,714) |
| Contract liabilities | 185,984 | 17,213 | (19,620) |
| Deposits received | 9,737 | (1,835) | (1,744) |
| Accrued expenses | (135,674) | 81,025 | (73,734) |
| Provisions | (5,555) | (160) | (566) |
| Long-term provisions | (754) | (357) | (1,061) |
| Plan assets | 82,445 | 6,110 | (17,772) |
| Retirement benefits payment | (270,415) | (157,801) | (99,396) |
| Others | 8,428 | (1,810) | (3,343) |
| Changes in assets and liabilities from operating activities | ₩ (144,208) | ₩ (108,813) | ₩ (274,163) |
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- Definition Adjustments for the decrease (increase) in contract assets to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Contract assets; Profit (loss)] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Adjustments for the decrease (increase) in prepaid expenses to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Current prepaid expenses; Profit (loss)] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Adjustments for increase (decrease) in deposits from customers to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Deposits from customers; Profit (loss)] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Adjustments for increase (decrease) in employee benefit liabilities to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition The increase (decrease) in working capital. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Adjustments for decrease (increase) in advance payments. No definition available.
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- Definition Adjustments for decrease increase in contract liabilities. No definition available.
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- Definition Adjustments for decrease (increase) in current accounts receivable -other. No definition available.
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- Definition Adjustments for decrease (increase) in guarantee deposits. No definition available.
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- Definition Adjustments for decrease (increase) in long-term accounts receivable - other. No definition available.
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- Definition Adjustments for decrease (increase) in plan assets. No definition available.
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- Definition Adjustments for increase (decrease) in accrued expenses. No definition available.
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- Definition Adjustments for increase decrease in other assets and liabilities. No definition available.
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- Definition Adjustments for increase (decrease) in other current provisions. No definition available.
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- Definition Adjustments for increase (decrease) in other long-term provisions. No definition available.
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- Definition Adjustments for increase (decrease) in withholdings. No definition available.
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