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v3.26.1

Leases - Summary of the changes in operating lease assets (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Disclosure of Detailed Information About Changes in Operating Lease Assets Explanatory [Line Items] |  |  |  |  |
Beginning balance |  | ₩ 4,157,592 |  | ₩ 3,972,304 |
Disposals |  | (68,928) | [1] | (57,580) | [2]
Depreciation | [3] | (598,890) |  | (596,443) |
Amounts transferred from (to) property and equipment |  | 30 |  | 80 |
Ending balance |  | 4,153,186 |  | 4,157,592 |
Property Plant And Equipment By Operating Lease Status |  |  |  |  |
Disclosure of Detailed Information About Changes in Operating Lease Assets Explanatory [Line Items] |  |  |  |  |
Beginning balance |  | 2,123,621 |  | 2,077,080 |
Acquisitions |  | 504,347 |  | 740,721 |
Disposals |  | (293,222) |  | (228,384) |
Depreciation |  | (445,157) |  | (465,716) |
Amounts transferred from (to) property and equipment |  | (30) |  | (80) |
Ending balance |  | ₩ 1,889,559 |  | ₩ 2,123,621 |
[1] | During 2024, W26,185 million transferred from assets-under-construction is included.
[2] | During 2023, W82,179 million transferred from assets-under-construction is included.
[3] | Included in general administrative expense, other operating income (loss) and insurance service expense of the consolidated statements of comprehensive income.

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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2025-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 200 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 200 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e&doctype=Standard -URIDate 2025-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 54 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_a&doctype=Standard -URIDate 2025-03-27 + Details
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