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Business Combination - Schedule of Values of Assets and Liabilities Acquired on the Acquisition Date from Major Business Combinations (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
II. Amount recognized as identifiable assets and liabilities |  |  |  |
Cash and cash equivalent | ₩ 2,449,062 | ₩ 3,019,592 | ₩ 2,634,624 | ₩ 2,305,894
Spark and Associates Inc. [Member] |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |
I. Total transfer price (A) | 20,328 |  |  |
II. Amount recognized as identifiable assets and liabilities |  |  |  |
Fair value of identifiable assets | 11,446 |  |  |
Cash and cash equivalent | 427 |  |  |
Trade and other receivables, net | 1,039 |  |  |
Property and equipment, net | 23 |  |  |
Intangible assets, net | 9,715 |  |  |
Other assets | 242 |  |  |
Fair value of identifiable liabilities | 2,793 |  |  |
Trade and other payables | 410 |  |  |
Current income tax liabilities | 32 |  |  |
Net defined benefit liabilities | 21 |  |  |
Other liabilities | 2,330 |  |  |
Total identifiable net assets (B) | 8,653 |  |  |
III. Non-controlling interest (C) | 0 |  |  |
IV. Fair value of net assets acquired (D=B-C) | 8,653 |  |  |
V. Goodwill (E=A-D) | ₩ 11,675 |  |  |

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