XML 126 R114.htm IDEA: XBRL DOCUMENT v3.19.1
Inventories - Additional Information (Detail) - KRW (₩)
₩ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Classes of current inventories [abstract]      
Inventories recognised as expense ₩ 3,926,199 ₩ 3,855,089 ₩ 3,589,809
Valuation loss and reversal of valuation loss ₩ 55,288 ₩ 11,165 ₩ (20,223)