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Operating Expenses - Summary of Details of Employee Benefits (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Profit (loss) [abstract]
Short-term employee benefits	₩ 4,161,874	₩ 3,837,359	₩ 3,770,786
Post-employment benefits (Defined benefit plan)	225,404	236,831	239,102
Post-employment benefits (Defined contribution plan)	72,576	71,068	61,912
Share-based payment	16,799	47,415	28,604
Others	19,232	23,137	23,276
Total	₩ 4,495,885	₩ 4,215,810	₩ 4,123,680

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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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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