v3.26.1
Goodwill - Details of the Changes in Goodwill (Parenthetical) (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of reconciliation of changes in goodwill [line items]    
Reclassified as assets held for sale [1]   ₩ 2,516
Disposal groups classified as held for sale [member]    
Disclosure of reconciliation of changes in goodwill [line items]    
Reclassified as assets held for sale ₩ 2,516  
[1] The Group decided to dispose of the shares of NATE Communications Corporation (formerly, SK Communications Co., Ltd.) and SK m&service Co., Ltd., the consolidated subsidiaries, and reclassified the goodwill amounting to ₩2,516 million of SK m&service Co., Ltd. as assets held for sale.