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Intangible Assets - Additional Information (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about intangible assets [line items]
Indefinite useful life	₩ 203,240	₩ 239,619
Individual assets or cash-generating units [member]
Disclosure of detailed information about intangible assets [line items]
Impairment loss	₩ 38,519
Discount rate	7.30%

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The discount rate used in the current measurement of fair value less costs of disposal.

+ References

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- Definition

The amount recognised as a reduction of the carrying amount of an asset or cash-generating unit to its recoverable amount. [Refer: Carrying amount [member]]

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- Definition

The amount of intangible assets assessed as having an indefinite useful life. [Refer: Intangible assets other than goodwill]

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