Related Parties and Others - Details of Significant Financing Transactions with Related Parties (Paranthetical) (Detail) - KRW (₩) ₩ in Millions				12 Months Ended
	Apr. 20, 2023	Mar. 30, 2023	Mar. 27, 2023	Dec. 31, 2023
LG Electronics Inc [member]
Disclosure of transactions between related parties [line items]
Borrowings from related party	₩ 350,000	₩ 650,000	₩ 1,000,000	₩ 1,000,000	[1]

[1] (*) The Group entered into a loan agreement with LG Electronics Inc. on March 27, 2023 for a total borrowing amount of W1,000,000 million, and received W650,000 million on March 30, 2023 and W350,000 million on April 20, 2023. The repayment plan is instalment payment for a period of one year, granting grace period of two years and the maturity date is March 30, 2026 (see note 12(c)