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Trade Accounts and Notes Receivable - Summary of Trade Accounts and Notes Receivables (Detail) - KRW (₩) ₩ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Current |  |
Current trade accounts and notes receivable | ₩ 11,183,974 | ₩ 10,821,488
Non-current |  |
Non-current trade accounts and notes receivable | 19,708 | 27,779
Gross amount [member] |  |
Current |  |
Trade accounts and notes receivable | 10,133,140 | 9,654,809
Due from customers for contract work | 1,580,558 | 1,488,180
Non-current |  |
Trade accounts and notes receivable | 64,902 | 72,387
Allowance for credit losses [member] |  |
Current |  |
Less: Allowance for doubtful accounts | (529,724) | (321,501)
Non-current |  |
Less: Allowance for doubtful accounts | ₩ (45,194) | ₩ (44,608)

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