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Related Party Transactions - Summary of Related Parties Outstanding Balances of Receivables and Payables (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of transactions between related parties [line items] |  |
Payables | ₩ 57,907 |
Trade receivables [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receivables | 1,625 | ₩ 2,078
Trade receivables [member] | K-Realty CR-REITs No.1 [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receivables | 608 | 674
Trade receivables [member] | K Bank Inc. [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receivables | 583 | 627
Trade receivables [member] | Others [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receivables | 434 | 777
Loans and receivables [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receivables | 37,941 | 44,570
Loans and receivables [member] | K-Realty CR-REITs No.1 [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receivables | 23,100 | 30,910
Loans and receivables [member] | K Bank Inc. [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receivables | 13,664 | 12,435
Loans and receivables [member] | Others [member] |  |
Disclosure of transactions between related parties [line items] |  |
Receivables | 1,177 | 1,225
Trade payables [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables |  | 4
Trade payables [member] | Others [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables |  | 4
Other payables [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | 1,268 | 1,412
Other payables [member] | K-Realty CR-REITs No.1 [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | 57,907 |
Other payables [member] | K Bank Inc. [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | 557 | 296
Other payables [member] | Others [member] |  |
Disclosure of transactions between related parties [line items] |  |
Payables | ₩ 711 | ₩ 1,116

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- Definition The amounts payable resulting from related party transactions. [Refer: Related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2019-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2019-en-r&anchor=para_20&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2019-01-01 -Paragraph 18 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2019-en-r&anchor=para_18_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amounts receivable resulting from related party transactions. [Refer: Related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2019-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2019-en-r&anchor=para_20&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2019-01-01 -Paragraph 18 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2019-en-r&anchor=para_18_b&doctype=Standard -URIDate 2019-03-27 + Details
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