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Commitments and Contingencies - Summary of Guarantees Provided by the Group for Third Parties (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of detailed information about borrowings [line items] |  |
Used amount | ₩ 7,298,867 | ₩ 6,648,293
Shinhan Bank [member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Subject to payment guarantees | Daegu Beomeo-Crossroads SeohanIDaum Buyers |
Limit | ₩ 8,028 |
Used amount | ₩ 6,985 |
Cash payers [member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Subject to payment guarantees | Shinhan Bank |
Limit | ₩ 683 |
Used amount | ₩ 0 |
KT Estate Inc. [member] | Shinhan Bank [member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Subject to payment guarantees | Busan Gaya Centreville Buyers |
Limit | ₩ 4,829 |
Used amount | ₩ 4,137 |
Bottom of range [member] | Shinhan Bank [member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturity | Oct 29, 2017 |
Bottom of range [member] | Cash payers [member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturity | Apr 19, 2019 |
Bottom of range [member] | KT Estate Inc. [member] | Shinhan Bank [member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturity | Nov 10, 2017 |
Top of range [member] | Shinhan Bank [member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturity | Nov. 30, 2020 |
Top of range [member] | Cash payers [member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturity | Apr 17, 2020 |
Top of range [member] | KT Estate Inc. [member] | Shinhan Bank [member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Maturity | Oct. 31, 2020 |

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