Inventories - Inventories Recognized as Cost of Sales and Inventory Write-downs Included in Cost of Sales and Usage of Inventory Write-downs (Detail) - KRW (₩) ₩ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Write-downs (reversals of write-downs) of inventories [abstract]
Inventories recognized as cost of sales	₩ 20,985,643	₩ 25,027,703	₩ 24,572,939
Including: Inventory write-downs	192,627	245,619	224,576
Usage of inventory write-downs	₩ 245,619	₩ 224,576	₩ 213,932

The amount of all expenses directly or indirectly attributed to the goods or services sold. Attributed expenses include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, such as depreciation and maintenance of factory buildings and equipment used in the production process, unallocated production overheads, and abnormal amounts of production costs of inventories.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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