XML 140 R130.htm IDEA: XBRL DOCUMENT v3.26.1
Property, Plant and Equipment, Net - Borrowing Costs Capitalized and Capitalized Interest Rate (Detail) - KRW (₩)
₩ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about property, plant and equipment [line items]      
Expenditure ₩ 5,665,151 ₩ 7,669,700 ₩ 6,733,289
Borrowing costs capitalized 148,383 193,093 126,260
Weighted average [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Expenditure ₩ 3,740,288 ₩ 4,016,832 ₩ 3,585,047
Bottom of range [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Capitalization rate (%) 1.11% 0.70% 1.53%
Top of range [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Capitalization rate (%) 8.04% 5.78% 6.91%