XML 170 R158.htm IDEA: XBRL DOCUMENT v3.19.1
Lease - Summary of Details of Finance Lease Assets (Detail) - KRW (₩)
₩ in Millions
Dec. 31, 2018
Dec. 31, 2017
Disclosure of recognised finance lease as assets by lessee [Line Items]    
Finance lease assets ₩ 190,811 ₩ 199,884
Gross carrying amount [member]    
Disclosure of recognised finance lease as assets by lessee [Line Items]    
Finance lease assets 343,055 325,975
Accumulated depreciation and amortisation [member]    
Disclosure of recognised finance lease as assets by lessee [Line Items]    
Finance lease assets ₩ (152,244) ₩ (126,091)