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Risk Management - Summary of Maturity Analysis for Non Derivative Financial Assets (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |  |
Cash and cash equivalents |  | ₩ 4,342,887 | ₩ 3,234,780
Financial assets at fair value through other comprehensive income |  | 502,443 | 502,829
Financial assets at amortized cost |  | 38,843 | 26,998
Loans |  | 1,024,806 | 1,046,521
Long-term/short-term financial instruments |  | 1,412,315 | 1,353,080
Financial assets at fair value through profit or loss |  | 2,711,285 | 3,709,508
Trade and other receivables |  | 14,196,156 | 12,628,615
Financial assets held for managing liquidity risk |  | 24,228,735 | 22,502,331
Less than 1 year |  |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |  |
Cash and cash equivalents |  | 4,342,887 | 3,234,780
Financial assets at fair value through other comprehensive income |  | 0 | 0
Financial assets at amortized cost |  | 28,905 | 16,762
Loans |  | 139,168 | 132,877
Long-term/short-term financial instruments |  | 578,578 | 666,758
Financial assets at fair value through profit or loss |  | 2,054,021 | 3,181,791
Trade and other receivables |  | 11,990,515 | 10,464,191
Financial assets held for managing liquidity risk |  | 19,134,074 | 17,697,159
1~5 Years |  |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |  |
Cash and cash equivalents |  | 0 | 0
Financial assets at fair value through other comprehensive income |  | 0 | 0
Financial assets at amortized cost |  | 9,938 | 10,231
Loans |  | 465,666 | 411,594
Long-term/short-term financial instruments |  | 22 | 0
Financial assets at fair value through profit or loss |  | 1,381 | 645
Trade and other receivables |  | 911,822 | 1,083,593
Financial assets held for managing liquidity risk |  | 1,388,829 | 1,506,063
More than 5 years |  |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |  |
Cash and cash equivalents |  | 0 | 0
Financial assets at fair value through other comprehensive income |  | 0 | 0
Financial assets at amortized cost |  | 0 | 5
Loans |  | 411,100 | 502,050
Long-term/short-term financial instruments |  | 23 | 25
Financial assets at fair value through profit or loss |  | 6,523 | 3,535
Trade and other receivables |  | 1,292,539 | 1,080,831
Financial assets held for managing liquidity risk |  | 1,710,185 | 1,586,446
Other |  |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |  |
Cash and cash equivalents | [1] | 0 | 0
Financial assets at fair value through other comprehensive income | [1] | 502,443 | 502,829
Financial assets at amortized cost | [1] | 0 | 0
Loans | [1] | 8,872 | 0
Long-term/short-term financial instruments | [1] | 833,692 | 686,297
Financial assets at fair value through profit or loss | [1] | 649,360 | 523,537
Trade and other receivables | [1] | 1,280 | 0
Financial assets held for managing liquidity risk | [1] | ₩ 1,995,647 | ₩ 1,712,663
[1] | The maturities cannot be presently determined.

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