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Borrowings - Summary of Short-term Borrowing (Detail) ₩ in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 KRW (₩) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 KRW (₩) | Dec. 31, 2022 USD ($)
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 0.00% | 0.00% |  |
Short-term borrowings [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings | ₩ 425,785 | $ 504,998 |  |
Short-term borrowings [member] | NongHyup Bank [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 4.88% | 4.88% |  |
Short-term borrowings | ₩ 8,500 |  | ₩ 9,000 |
Short-term borrowings [member] | Shinhan Bank [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings | ₩ 151,500 |  | 105,000 |
Short-term borrowings [member] | Shinhan Bank [member] | Bottom of range [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 3.84% | 3.84% |  |
Short-term borrowings [member] | Shinhan Bank [member] | Top of range [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 6.43% | 6.43% |  |
Short-term borrowings [member] | Shinhan Bank 1 [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings |  |  | 30,000 |
Short-term borrowings [member] | Korea Development Bank [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings | ₩ 34,900 |  | 27,201 |
Short-term borrowings [member] | Korea Development Bank [member] | Bottom of range [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 3.23% | 3.23% |  |
Short-term borrowings [member] | Korea Development Bank [member] | Top of range [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 4.95% | 4.95% |  |
Short-term borrowings [member] | Woori Bank [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings |  |  | 50,000 |
Short-term borrowings [member] | Industrial Bank Of Korea [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 4.862% | 4.862% |  |
Short-term borrowings | ₩ 6,000 |  | 6,000 |
Short-term borrowings [member] | Hana Bank [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings | ₩ 4,800 |  | 5,000 |
Annual interest rates description | CD(91D)+0.126 |  |  |
Short-term borrowings [member] | KB SECURITIES [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings | ₩ 69,635 |  | 94,822 |
Short-term borrowings [member] | KB SECURITIES [Member] | Bottom of range [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 4.11% | 4.11% |  |
Short-term borrowings [member] | KB SECURITIES [Member] | Top of range [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 4.91% | 4.91% |  |
Short-term borrowings [member] | NH INVESTMENT SECURITIES [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings |  |  | 20,000 |
Short-term borrowings [member] | HSBC [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings | ₩ 30,450 | $ 23,600 | 23,451 | $ 18,500
Annual interest rates description | SOFR +2.100 |  |  |
Short-term borrowings [member] | IBK Securities [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings |  |  | 20,000 |
Short-term borrowings [member] | Hi Investment Securities [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings |  |  | 99,524 |
Short-term borrowings [member] | Woori Bank One [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 4.40% | 4.40% |  |
Short-term borrowings | ₩ 70,000 |  |  |
Short-term borrowings [member] | Nong Hyup Bank One [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings |  |  | ₩ 15,000 |
Short-term borrowings [member] | Woori Bank Two [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Short-term borrowings | ₩ 20,000 |  |  |
Annual interest rates description | CD(91D)+1.960 |  |  |
Short-term borrowings [member] | Korea Investment [member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Annual interest rates | 4.91% | 4.91% |  |
Short-term borrowings | ₩ 30,000 |  |  |

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