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Borrowings - Summary of Long-term Borrowings (Detail) ₩ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 KRW (₩) | Dec. 31, 2020 SGD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 KRW (₩) | Dec. 31, 2019 USD ($)
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates | 0.00% | 0.00% | 0.00% |  |
Borrowings | ₩ 7,316,298 | $ 284,000,000 | $ 519,598,989 | ₩ 7,298,867 |
Total | 5,898,184 |  |  | 6,113,142 |
Shinhan Bank [member] | Facility loans [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings |  |  | 25,918,000 | 30,008 | $ 25,918,000
Shinhan Bank [member] | Kookmin Bank and other [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | $ |  |  |  |  | 87,940,000
NongHyup Bank [member] | Facility loans [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings |  |  |  | 79 |
Other Financial Instruments [member] | Kookmin Bank and other [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings |  |  | $ 48,855,000 | 950 |
Long-term borrowings [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | 272,263 |  |  | 190,780 |
Less: Current portion | (94,042) |  |  | (50,192) |
Total | 178,221 |  |  | 140,588 |
Long-term borrowings [member] | General loans [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | ₩ 30,000 |  |  | 30,000 |
Long-term borrowings [member] | Export-Import Bank of Korea [member] | Inter-Korean Cooperation Fund [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates | 1.50% | 1.50% | 1.50% |  |
Borrowings | ₩ 2,961 |  |  | 3,454 |
Long-term borrowings [member] | Industrial Bank of Korea [member] | General loans [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates | 2.98% | 2.98% | 2.98% |  |
Borrowings | ₩ 6,000 |  |  | 6,000 |
Long-term borrowings [member] | Shinhan Bank [member] | General loans [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates | 1.94% | 1.94% | 1.94% |  |
Borrowings | ₩ 5,000 |  |  | 5,000 |
Long-term borrowings [member] | Shinhan Bank [member] | General Loans 1 [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates description | LIBOR(3M)+1.650 |  |  |  |
Annual interest rates adjustment rate | 1.65% | 1.65% | 1.65% |  |
Borrowings | ₩ 9,694 |  | $ 8,910,000 | 3,473 | $ 3,000,000
Long-term borrowings [member] | Shinhan Bank [member] | General Loans 2 [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates description | LIBOR(3M)+2.130 |  |  |  |
Annual interest rates adjustment rate | 2.13% | 2.13% | 2.13% |  |
Borrowings | ₩ 27,200 |  | $ 25,000,000 |  |
Long-term borrowings [member] | Shinhan Bank [member] | Facility loans [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates description | LIBOR(3M)+1.340 |  |  |  |
Annual interest rates adjustment rate | 1.34% | 1.34% | 1.34% |  |
Borrowings | ₩ 28,199 |  |  |  |
Long-term borrowings [member] | CA-CIB [member] | Long-term CP [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates | 1.26% | 1.26% | 1.26% |  |
Borrowings | ₩ 100,000 |  |  |  |
Long-term borrowings [member] | NongHyup Bank [member] | General loans [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | ₩ 54 |  |  |  |
Long-term borrowings [member] | NongHyup Bank [member] | Facility loans [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates | 2.00% | 2.00% | 2.00% |  |
Long-term borrowings [member] | Korea Development Bank [member] | General loans [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates | 3.02% | 3.02% | 3.02% |  |
Borrowings | ₩ 10,000 |  |  | 10,000 |
Long-term borrowings [member] | Korea Development Bank [member] | General Loans 1 [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates | 3.31% | 3.31% | 3.31% |  |
Long-term borrowings [member] | Other Financial Instruments [member] | Redeemable convertible preferred stock [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowings | ₩ 53,155 |  |  | ₩ 101,816 |
Long-term borrowings [member] | Other Financial Instruments [member] | Kookmin Bank and other [member] |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Annual interest rates description | LIBOR(3M)+1.850 |  |  |  |
Annual interest rates adjustment rate | 1.85% | 1.85% | 1.85% |  |

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