XML 134 R122.htm IDEA: XBRL DOCUMENT v3.19.1
Investment Properties - Summary of Investment Properties Provided as Collateral (Detail) - Land and buildings [member] - KRW (₩)
₩ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Deposits 1 [member]    
Disclosure of detailed information about investment property [line items]    
Carrying amount ₩ 548,567 ₩ 583,778
Secured amount ₩ 66,551 ₩ 74,963
Related account Deposits Deposits
Related amount ₩ 59,492 ₩ 63,923
Borrowings [member]    
Disclosure of detailed information about investment property [line items]    
Carrying amount 5,292 7,897
Secured amount ₩ 3,987 ₩ 7,905
Related account Borrowings Borrowings
Related amount ₩ 3,322 ₩ 5,270