XML 186 R171.htm IDEA: XBRL DOCUMENT v3.23.1
Construction Contracts - Summary of Changes in Total Contract Amount in Which Revenue is Not Yet Recognized (Details) - KRW (₩)
₩ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Construction Services Contracts [Abstract]      
Beginning balance ₩ 2,783,935 ₩ 3,152,725 ₩ 2,735,141
Increase and decrease      
New orders and foreign exchange impact 3,578,599 458,635 1,512,460
Changes in scope of construction work 81,401 72,427 282,701
Increase (decrease) in Construction contracts from new orders and foreign exchange 3,457,964 386,208 1,229,759
Recognized as revenue (646,953) (754,998) (812,175)
Ending balance ₩ 5,594,946 ₩ 2,783,935 ₩ 3,152,725