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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, 2024	Dec. 31, 2023	Dec. 31, 2022
Construction Services Contracts [Abstract]
Beginning balance	₩ 5,795,600	₩ 5,594,946	₩ 2,783,935
Increase and decrease
New orders and foreign exchange impact	1,299,281	1,029,165	3,578,599
Changes in scope of construction work	109,000	43,116	81,401
Increase (decrease) in Construction contracts from new orders and foreign exchange	1,190,281	986,049	3,457,964
Recognized as revenue	(849,108)	(785,395)	(646,953)
Ending balance	₩ 6,136,773	₩ 5,795,600	₩ 5,594,946

X

- Definition

The amount of revenue arising from construction contracts. Construction contracts are contracts specifically negotiated for the construction of an asset or a combination of assets that are closely interrelated or interdependent in terms of their design, technology and function or their ultimate purpose or use. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

+ Details

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Balance Type:	credit
Period Type:	duration

X

- Definition

Changes in scope of construction work.

+ References

No definition available.

+ Details

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X

- Definition

New orders and other.

+ References

No definition available.

+ Details

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X

- Definition

Increase (decrease) in Construction contracts.

+ References

No definition available.

+ Details

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X

- Definition

Construction contracts amounts.

+ References

No definition available.

+ Details

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X

- Definition

Construction Services Contracts.

+ References

No definition available.

+ Details

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X

- Definition

Increase and decrease.

+ References

No definition available.

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