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Fair Value (Tables) | 12 Months Ended
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Dec. 31, 2024
Text block Explanatory [Abstract] |
Summary of Carrying Amount and Fair Value of Financial Instruments by Category | Carrying amount and fair value of financial instruments by category as of December 31, 2023 and 2024, are as follows:
(in millions of Korean won) |  | December 31, 2023 |  |  | December 31, 2024 |
|  | Carrying amount |  |  | Fair value |  |  | Carrying amount |  |  | Fair value |
Financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | ￦ | 2,879,554 |  |  |  | 1 |  |  | ￦ | 3,716,680 |  |  |  | 1 |
Trade and other receivables |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial assets measured at amortized cost 2 |  |  | 8,326,229 |  |  |  | 1 |  |  |  | 7,380,901 |  |  |  | 1 |
Financial assets at fair value through other comprehensive income |  |  | 116,198 |  |  |  | 116,198 |  |  |  | 114,774 |  |  |  | 114,774 |
Other financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial assets measured at amortized cost |  |  | 1,385,921 |  |  |  | 1 |  |  |  | 962,653 |  |  |  | 1 |
Financial assets at fair value through profit or loss |  |  | 939,661 |  |  |  | 939,661 |  |  |  | 1,029,926 |  |  |  | 1,029,926 |
Financial assets at fair value through other comprehensive income |  |  | 1,680,168 |  |  |  | 1,680,168 |  |  |  | 1,665,368 |  |  |  | 1,665,368 |
Derivative financial assets for hedging |  |  | 159,211 |  |  |  | 159,211 |  |  |  | 445,471 |  |  |  | 445,471 |
Total |  | ￦ | 15,486,942 |  |  |  |  |  |  | ￦ | 15,315,773 |  |  |  |  |
Financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade and other payables |  | ￦ | 8,317,822 |  |  |  | 1 |  |  | ￦ | 7,214,174 |  |  |  | 1 |
Borrowings |  |  | 10,218,165 |  |  |  | 9,979,545 |  |  |  | 10,520,690 |  |  |  | 10,423,619 |
Other financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial liabilities at amortized cost |  |  | 915,185 |  |  |  | 1 |  |  |  | 942,135 |  |  |  | 1 |
Financial liabilities at fair value through profit or loss |  |  | 136,106 |  |  |  | 136,106 |  |  |  | 132,011 |  |  |  | 132,011 |
Derivative financial liabilities for hedging purpose |  |  | 24,547 |  |  |  | 24,547 |  |  |  | 3 |  |  |  | 3 |
Total |  | ￦ | 19,611,825 |  |  |  |  |  |  | ￦ | 18,809,013 |  |  |  |  |
| 1 | The Group did not conduct fair value estimation since the book amount is a reasonable approximation of the fair value.
| 2 | Lease receivables are excluded from fair value disclosure in accordance with IFRS 7 .
Summary of Fair Value Hierarchy Classifications of Financial Assets and Financial Liabilities That are Measured at Fair Value | Fair value hierarchy classifications of the financial assets and financial liabilities that are measured at fair value disclosed in fair value as of December 31, 2023 and 2024, are as follows:
(in millions of Korean won) |  | December 31, 2023 |
| Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade and other receivables |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial assets at fair value through other comprehensive income |  | ￦ | — |  |  | ￦ | 116,198 |  |  | ￦ | — |  |  | ￦ | 116,198 |
Other financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial assets at fair value through profit or loss |  |  | 13,911 |  |  |  | 156,918 |  |  |  | 768,832 |  |  |  | 939,661 |
Financial assets at fair value through other comprehensive income |  |  | 1,230,936 |  |  |  | 5,206 |  |  |  | 444,026 |  |  |  | 1,680,168 |
Derivative financial assets for hedging |  |  | — |  |  |  | 159,211 |  |  |  | — |  |  |  | 159,211 |
Investment properties |  |  | — |  |  |  | — |  |  |  | 5,276,169 |  |  |  | 5,276,169 |
Total |  | ￦ | 1,244,847 |  |  | ￦ | 437,533 |  |  | ￦ | 6,489,027 |  |  | ￦ | 8,171,407 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  | ￦ | — |  |  | ￦ | 9,979,545 |  |  | ￦ | — |  |  | ￦ | 9,979,545 |
Other financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial liabilities at fair value through profit or loss |  |  | — |  |  |  | 1,545 |  |  |  | 134,561 |  |  |  | 136,106 |
Derivative financial liabilities for hedging purpose |  |  | — |  |  |  | 24,547 |  |  |  | — |  |  |  | 24,547 |
Total |  | ￦ | — |  |  | ￦ | 10,005,637 |  |  | ￦ | 134,561 |  |  | ￦ | 10,140,198 |
(in millions of Korean won) |  | December 31, 2024 |
| Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade and other receivables |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial assets at fair value through other comprehensive income |  | ￦ | — |  |  | ￦ | 114,774 |  |  | ￦ | — |  |  | ￦ | 114,774 |
Other financial assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial assets at fair value through profit or loss |  |  | 5,620 |  |  |  | 181,694 |  |  |  | 842,612 |  |  |  | 1,029,926 |
Financial assets at fair value through other comprehensive income |  |  | 1,317,120 |  |  |  | 5,418 |  |  |  | 342,830 |  |  |  | 1,665,368 |
Derivative financial assets for hedging |  |  | — |  |  |  | 445,471 |  |  |  | — |  |  |  | 445,471 |
Investment properties |  |  | — |  |  |  | — |  |  |  | 6,899,105 |  |  |  | 6,899,105 |
Total |  | ￦ | 1,322,740 |  |  | ￦ | 747,357 |  |  | ￦ | 8,084,547 |  |  | ￦ | 10,154,644 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  | ￦ | — |  |  | ￦ | 10,423,619 |  |  | ￦ | — |  |  | ￦ | 10,423,619 |
Other financial liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financial liabilities at fair value through profit or loss |  |  | — |  |  |  | — |  |  |  | 132,011 |  |  |  | 132,011 |
Derivative financial liabilities for hedging purpose |  |  | — |  |  |  | 3 |  |  |  | — |  |  |  | 3 |
Total |  | ￦ | — |  |  | ￦ | 10,423,622 |  |  | ￦ | 132,011 |  |  | ￦ | 10,555,633 |
Summary of Changes in Level 3 of Fair Value Hierarchy for Recurring Fair Value Measurements | Details of changes in Level 3 of the fair value hierarchy for the recurring fair value measurements as of December 31, 2023 and 2024, are as follows:
|  | 2023 |
|  | Financial assets |  |  | Financial liabilities |
(in millions of Korean won) |  | Financial assets at fair value through profit or loss |  |  | Financial assets at fair value through other comprehensive income |  |  | Derivative financial assets for hedging |  |  | Financial liabilities at fair value through profit or loss |
Beginning balance |  | ￦ | 612,069 |  |  | ￦ | 497,129 |  |  | ￦ | 1,113 |  |  | ￦ | 141,280 |
Acquisition |  |  | 216,838 |  |  |  | 10,267 |  |  |  | — |  |  |  | — |
Reclassification |  |  | 26,471 |  |  |  | (5,532 | ) |  |  | (1,113) |  |  |  | (7,363 | )
Acquisition and disposition of businesses |  |  | 252 |  |  |  | — |  |  |  | — |  |  |  | — |
Disposal |  |  | (44,323 | ) |  |  | (6 | ) |  |  | — |  |  |  | (5,205 | )
Amount recognized in profit or loss 1 |  |  | (42,475 | ) |  |  | (61 | ) |  |  | — |  |  |  | 5,849 |
Amount recognized in other comprehensive income 2 |  |  | — |  |  |  | (57,771 | ) |  |  | — |  |  |  | — |
Ending balance |  | ￦ | 768,832 |  |  | ￦ | 444,026 |  |  | ￦ | — |  |  | ￦ | 134,561 |
| 1 | The recognition of gains and losses on derivatives financial liabilities (assets) for hedging purposes consists entirely of derivatives valuation losses.
| 2 | The recognition of gains and losses on financial liabilities measured at fair value through profit or loss consists of derivative valuation losses.
|  | 2024 |
|  | Financial assets |  |  | Financial liabilities |
|  | Financial assets at fair value through profit or loss |  |  | Financial assets at fair value through other comprehensive income |  |  | Derivative financial assets for hedging |  |  | Financial liabilities at fair value through profit or loss |
Beginning balance |  | ￦ | 768,832 |  |  | ￦ | 444,026 |  |  | ￦ | — |  |  | ￦ | 134,561 |
Acquisition |  |  | 109,198 |  |  |  | 1,011 |  |  |  | — |  |  |  | — |
Reclassification |  |  | 51,194 |  |  |  | (45 | ) |  |  | — |  |  |  | (5,772 | )
Disposal |  |  | (36,663 | ) |  |  | — |  |  |  | — |  |  |  | — |
Amount recognized in profit or loss 1, |  |  | (49,949 | ) |  |  | — |  |  |  | — |  |  |  | 3,222 |
Amount recognized in other comprehensive income 2 |  |  | — |  |  |  | (102,162 | ) |  |  | — |  |  |  | — |
Ending balance |  | ￦ | 842,612 |  |  | ￦ | 342,830 |  |  | ￦ | — |  |  | ￦ | 132,011 |
| 1 | The recognition of gains and losses on financial liabilities measured at fair value through profit or loss consists of derivative valuation gains and losses.
| 2 | The recognition of gains and losses on financial liabilities measured at fair value through profit or loss consists of derivative valuation losses.
Summary of Valuation Techniques and Inputs | Valuation techniques and inputs used in the recurring, non-recurring fair value measurements and disclosed fair values categorized within Level 2 and Level 3 of the fair value hierarchy as of December 31, 2023 and 2024, are as follows:
|  | December 31, 2023
(in millions of Korean won) |  | Fair value |  |  | Level |  |  | Valuation techniques |  | Inputs
Assets |  |  |  |  |  |  |  |  |  |  |  |
Trade and other receivables |  |  |  |  |  |  |  |  |  |  |  |
Financial assets at fair value through other comprehensive income |  | ￦ | 116,198 |  |  |  | 2 |  |  | DCF Model |  | Guaranteed bond interest rate
Other financial assets |  |  |  |  |  |  |  |  |  |  |  |
Financial assets at fair value through profit or loss |  |  | 925,750 |  |  |  | 2,3 |  |  | DCF Model, Adjusted Net Asset Model, Monte-Carlo Simulation |  | Market Interest rate, Underlying asset price
Financial assets at fair value through other comprehensive income |  |  | 449,232 |  |  |  | 2,3 |  |  | DCF Model, Market Approach Model |  | Discount rate
Derivative financial assets for hedging |  |  | 159,211 |  |  |  | 2 |  |  | DCF Model |  | Market observation discount rate, Swap interest rate
Investment properties |  |  | 5,276,169 |  |  |  | 3 |  |  | DCF Model |  |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  | ￦ | 9,979,545 |  |  |  | 2 |  |  | DCF Model |  | Bond interest rate
Other financial liabilities |  |  |  |  |  |  |  |  |  |  |  |
Financial liabilities at fair value through profit or loss |  |  | 136,106 |  |  |  | 2,3 |  |  | DCF Model, Binomial Option Pricing Model, |  | Forward exchange rate Forward interest rate
Derivative financial liabilities for hedging |  |  | 24,547 |  |  |  | 2 |  |  | DCF Model |  | Market observation discount rate
(in millions of Korean won) |  | December 31, 2024
|  | Fair value |  |  | Level |  |  | Valuation techniques |  | Inputs
Assets |  |  |  |  |  |  |  |  |  |  |  |
Trade and other receivables |  |  |  |  |  |  |  |  |  |  |  |
Financial assets at fair value through other comprehensive income |  | ￦ | 114,774 |  |  |  | 2 |  |  | DCF Model |  | Guaranteed bond interest rate
Other financial assets |  |  |  |  |  |  |  |  |  |  |  |
Financial assets at fair value through profit or loss |  |  | 1,024,306 |  |  |  | 2,3 |  |  | DCF Model, Adjusted Net Asset Model, Market Approach Model T-F Model |  | Market Interest rate, Underlying asset price
Financial assets at fair value through other comprehensive income |  |  | 348,248 |  |  |  | 2,3 |  |  | DCF Model, Market Approach Model |  | Discount rate
Derivative financial assets for hedging |  |  | 445,471 |  |  |  | 2 |  |  | DCF Model |  | Market observation discount rate
Investment properties |  |  | 6,899,105 |  |  |  | 3 |  |  | DCF Model |  |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Borrowings |  | ￦ | 10,423,619 |  |  |  | 2 |  |  | DCF Model |  | Bond interest rate
Other financial liabilities |  |  |  |  |  |  |  |  |  |  |  |
Financial liabilities at fair value through profit or loss |  |  | 132,011 |  |  |  | 3 |  |  | Binomial Option Pricing Model, |  | Treasury Bond Interest rate
Derivative financial liabilities for hedging |  |  | 3 |  |  |  | 2 |  |  | DCF Model |  | Market observation discount rate

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