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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, 2017 | Dec. 31, 2016
Disclosure of detailed information about borrowings [Line Items] |  |
Used amount | ₩ 6,683,662 | ₩ 8,120,791
Shinhan Bank [Member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Subject to payment guarantees | Daegu Beomeo -Crossroads SeohanIDaum Buyers |
Limit | ₩ 81,722 |
Used amount | ₩ 14,237 |
Cash Payers [member] | Guarantees [member] |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Subject to payment guarantees | KEB Hana Bank |
Limit | ₩ 384 |
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 | ₩ 48,536 |
Used amount | ₩ 8,309 |
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, 2017 |
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 19, 2018 |
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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