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v3.26.1

Leases - Summary of the changes in the right-of-use assets (Details) - KRW (₩) ₩ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Summary of the changes in the right-of-use assets [Line Items] |  |  |  |  |
Beginning balance |  | ₩ 4,157,592 |  | ₩ 3,972,304 |
Disposals |  | (68,928) | [1] | (57,580) | [2]
Depreciation | [3] | (598,890) |  | (596,443) |
Impairment loss recognized |  | 923 |  | 1,650 |
Effects of foreign currency adjustments |  | 2,158 |  | 27,060 |
Effects of business combinations |  | 127,968 |  |  |
Ending balance |  | 4,153,186 |  | 4,157,592 |
Right-of-use assets |  |  |  |  |
Summary of the changes in the right-of-use assets [Line Items] |  |  |  |  |
Beginning balance |  | 875,250 |  | 606,475 |
Acquisitions |  | 289,866 |  | 624,103 |
Disposals |  | (63,119) |  | (45,452) |
Depreciation | [4] | (334,935) |  | (329,946) |
Impairment loss recognized |  |  |  | 53 |
Effects of foreign currency adjustments |  | 961 |  | 20,017 |
Effects of business combinations |  | 4 |  |  |
Ending balance |  | 768,027 |  | 875,250 |
Real estate | Right-of-use assets |  |  |  |  |
Summary of the changes in the right-of-use assets [Line Items] |  |  |  |  |
Beginning balance |  | 836,925 |  | 566,941 |
Acquisitions |  | 271,932 |  | 601,686 |
Disposals |  | (57,574) |  | (40,522) |
Depreciation | [4] | (317,022) |  | (311,077) |
Impairment loss recognized |  |  |  | 53 |
Effects of foreign currency adjustments |  | 1,153 |  | 19,844 |
Effects of business combinations |  | 0 |  |  |
Ending balance |  | 735,414 |  | 836,925 |
Vehicle | Right-of-use assets |  |  |  |  |
Summary of the changes in the right-of-use assets [Line Items] |  |  |  |  |
Beginning balance |  | 25,993 |  | 28,417 |
Acquisitions |  | 13,205 |  | 15,454 |
Disposals |  | (4,788) |  | (4,222) |
Depreciation | [4] | (13,060) |  | (13,843) |
Impairment loss recognized |  |  |  | 0 |
Effects of foreign currency adjustments |  | (232) |  | 187 |
Effects of business combinations |  | 4 |  |  |
Ending balance |  | 21,122 |  | 25,993 |
Others | Right-of-use assets |  |  |  |  |
Summary of the changes in the right-of-use assets [Line Items] |  |  |  |  |
Beginning balance |  | 12,332 |  | 11,117 |
Acquisitions |  | 4,729 |  | 6,963 |
Disposals |  | (757) |  | (708) |
Depreciation | [4] | (4,853) |  | (5,026) |
Impairment loss recognized |  |  |  | 0 |
Effects of foreign currency adjustments |  | 40 |  | (14) |
Effects of business combinations |  | 0 |  |  |
Ending balance |  | ₩ 11,491 |  | ₩ 12,332 |
[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.
[4] | Included in general administrative expense, other operating expense and insurance service expense of the consolidated statements of comprehensive income.

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- Definition The increase in property, plant and equipment resulting from acquisitions through business combinations. [Refer: Total for all business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2025-01-01 -Paragraph 73 -Subparagraph e -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e_iii&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 -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e_iii&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 -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e_iii&doctype=Standard -URIDate 2025-03-27 + Details
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