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Business Combination - Additional Information (Detail) - Spark and Associates Inc. [Member]
₩ in Millions
Sep. 30, 2021
KRW (₩)
shares
Disclosure of detailed information about business combination [Line Items]  
Percentage of ownership interest (100.00%)
Number of shares acquired | shares 100,000
Number of Shares Acquired Value | ₩ ₩ 20,328