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Operating Expenses - Summary of Details of Employee Benefits (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Profit (loss) [abstract]
Salaries & Wages	₩ 4,231,781	₩ 4,161,874	₩ 3,837,359
Post-employment benefits (Defined benefit plan)	183,026	225,404	236,831
Post-employment benefits (Defined contribution plan)	85,174	72,576	71,068
Share-based payment	15,450	16,799	47,415
Others	41,401	19,232	23,137
Total	₩ 4,556,832	₩ 4,495,885	₩ 4,215,810

X

- Definition

The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment.

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- Definition

The amount of employee expenses that the entity does not separately disclose in the same statement or note.

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- Definition

The amount of post-employment benefit expense included in profit or loss relating to defined benefit plans. [Refer: Profit (loss); Defined benefit plans [member]] [Contrast: Increase (decrease) in net defined benefit liability (asset) resulting from expense (income) in profit or loss]

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The amount of post-employment benefit expense relating to defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods.

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- Definition

The amount of expense from employee benefits (other than termination benefits) that are expected to be settled wholly within twelve months after the end of the annual reporting period in which the employees render the related services.

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