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Commitments and Contingencies - Summary of Guarantees Received from Financial Institutions (Detail) - Dec. 31, 2021 $ in Thousands, ₩ in Millions | KRW (₩) | USD ($)
--- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | ₩ 1,491,586 | $ 89,508
Hana Bank [Member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | $ |  | 1,200,000
Performance guarantee [member] | Seoul Guarantee Insurance and others [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | 171,043 |
Guarantee for payment in korean currency [member] | Shinhan Bank and others [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | 20,911 |
Guarantee for payment in foreign currency [member] | Kookmin Bank and Others [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | $ |  | 70,092,000
Comprehensive credit line [member] | KEB Hana Bank and others [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | 24,800 | 8,700,000
Bid guarantee [member] | KEB Hana Bank [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | $ |  | 400
Bid guarantee [member] | Korea Software Financial Cooperative and others [Member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | 108,407 |
Performance guarantee/Warrant guarantee [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | 558,359 |
Guarantee for advance payments/others [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | 574,103 |
Refund guarantee for advances received [Member] | Korea Development Bank [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | $ |  | 8,536
Guarantees for depositions [Member] | HSBC [Member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | $ |  | $ 580,000
Construction Fund Guarantee Insurance And Others [Member] | Seoul guarantee insurance [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Guarantees limit | ₩ 33,963 |

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