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Fair Value - Summary of Valuation Techniques and Inputs (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Assets |  |  |
Financial assets at fair value through other comprehensive income | ₩ 326,157 |  |
Other financial assets |  |  |
Available-for-sale financial assets |  | ₩ 380,953 |
Financial assets at fair value through profit or loss | 777,685 | 5,913 |
Financial assets at fair value through other comprehensive income | 326,157 |  |
Derivative financial assets for hedging | 29,843 | 7,389 |
Investment properties | 1,091,084 | 1,189,531 | ₩ 1,148,044
Other financial liabilities |  |  |
Financial liabilities at fair value through profit or loss | 7,758 | 5,051 |
Derivative financial liabilities for hedging | 57,308 | 93,771 |
Level 2 [Member] |  |  |
Other financial assets |  |  |
Derivative financial assets for hedging | ₩ 29,843 | ₩ 7,389 |
Other financial liabilities |  |  |
Valuation techniques | DCF Model | DCF Model |
Level 2 [Member] | Financial assets at fair value through other comprehensive income [member] |  |  |
Other financial liabilities |  |  |
Valuation techniques | DCF Model |  |
Level 2 [Member] | Financial assets at fair value through other comprehensive income [member] | Trades and other receivables [member] |  |  |
Assets |  |  |
Financial assets at fair value through other comprehensive income | ₩ 1,097,348 |  |
Other financial assets |  |  |
Financial assets at fair value through other comprehensive income | 1,097,348 |  |
Level 2, 3 [Member] |  |  |
Other financial liabilities |  |  |
Derivative financial liabilities for hedging | ₩ 57,308 | ₩ 93,770 |
Valuation techniques | Hull-White model, DCF Model | Hull-White model, DCF Model |
Level 2, 3 [Member] | Financial assets at fair value through profit or loss [member] |  |  |
Other financial assets |  |  |
Available-for-sale financial assets |  | ₩ 312,543 |
Financial assets at fair value through profit or loss | ₩ 777,564 |  |
Other financial liabilities |  |  |
Valuation techniques | DCF Model, Adjusted net asset model | DCF Model |
Level 2, 3 [Member] | Financial assets at fair value through other comprehensive income [member] |  |  |
Assets |  |  |
Financial assets at fair value through other comprehensive income | ₩ 317,296 |  |
Other financial assets |  |  |
Financial assets at fair value through other comprehensive income | ₩ 317,296 |  |
Other financial liabilities |  |  |
Valuation techniques | DCF Model |  |
Level 3 [Member] |  |  |
Other financial assets |  |  |
Investment properties | ₩ 1,821,061 | ₩ 1,755,600 |
Other financial liabilities |  |  |
Valuation techniques |  | DCF Model |
Valuation techniques | DCF Model | DCF Model, Comparable Company Analysis |
Level 3 [Member] | Financial assets at fair value through profit or loss [member] |  |  |
Other financial assets |  |  |
Financial assets at fair value through profit or loss |  | ₩ 5,813 |
Other financial liabilities |  |  |
Other derivative financial liabilities |  | ₩ 5,051 |
Financial liabilities at fair value through profit or loss | ₩ 7,758 |  |
Valuation techniques |  | DCF Model |
Valuation techniques | DCF Model, Comparable Company Analysis |  |

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- Definition The description of the valuation techniques (for example, the market approach, cost approach and income approach) used for the fair value measurement of assets. [Refer: Valuation techniques [member]; Cost approach [member]; Income approach [member]; Market approach [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2018-01-01 -Paragraph 93 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=13&date=2018-03-01&anchor=para_93_d&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of financial assets at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 8 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_8_h&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of financial assets that are measured at fair value and for which gains (losses) are recognised in profit or loss. A financial asset shall be measured at fair value through profit or loss unless it is measured at amortised cost or at fair value through other comprehensive income. A gain (loss) on a financial asset measured at fair value shall be recognised in profit or loss unless it is part of a hedging relationship, it is an investment in an equity instrument for which the entity has elected to present gains and losses in other comprehensive income or it is a financial asset measured at fair value through other comprehensive income. [Refer: At fair value [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 8 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_8_a&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of non-derivative financial assets that are designated as available for sale or are not classified as (a) loans and receivables; (b) held-to-maturity investments; or (c) financial assets at fair value through profit or loss. [Refer: Derivative financial assets; Financial assets at fair value through profit or loss; Held-to-maturity investments] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2021-01-01 -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 8 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_8_d&doctype=Standard&book=b -URIDate 2018-03-16 + Details
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- Definition The amount of financial liabilities that meet either of the following conditions: (a) they meet the definition of held for trading; or (b) upon initial recognition they are designated by the entity as at fair value through profit or loss. An entity may use this designation only when permitted by paragraph 4.3.5 of IFRS 9 (embedded derivatives) or when doing so results in more relevant information, because either: (a) it eliminates or significantly reduces a measurement or recognition inconsistency (sometimes referred to as ‘an accounting mismatch’) that would otherwise arise from measuring assets or liabilities or recognising the gains and losses on them on different bases; or (b) a group of financial liabilities or financial assets and financial liabilities is managed and its performance is evaluated on a fair value basis, in accordance with a documented risk management or investment strategy, and information about the group is provided internally on that basis to the entity’s key management personnel (as defined in IAS 24). [Refer: At fair value [member]; Key management personnel of entity or parent [member]; Derivatives [member]; Financial assets; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 8 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_8_e&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Expiry date 2019-01-01: The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee under a finance lease) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business. Effective 2019-01-01: The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee as a right-of-use asset) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2018-01-01 -Paragraph 76 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2018-03-01&anchor=para_76&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2018-01-01 -Paragraph 79 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2018-03-01&anchor=para_79_d&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_b&doctype=Standard -URIDate 2018-03-16 + Details
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