XML 210 R197.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Segment Information - Summary of Operating Revenues and Non Current Assets by Geographical Regions (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of geographical areas [Line Items]      
Operating revenues ₩ 26,595,245 ₩ 26,234,206 ₩ 25,205,659
Non-current assets 20,909,038 21,115,704  
Domestic [member]      
Disclosure of geographical areas [Line Items]      
Operating revenues 26,425,735 26,074,349 25,114,719
Non-current assets 20,725,694 20,845,214  
Overseas [member]      
Disclosure of geographical areas [Line Items]      
Operating revenues 169,510 159,857 ₩ 90,940
Non-current assets ₩ 183,344 ₩ 270,490