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Business combination - Summary of Net cash flows from business combinations (Details) - HIEP HIEP THANH Investment Company Limited - KRW (₩) ₩ in Millions	12 Months Ended
	Dec. 31, 2025	Oct. 20, 2025
Disclosure of Net cash flows from business combinations [Line Items]
Cash	₩ 132,519
Less: Cash and cash equivalents held by the subsidiary	8,515	₩ 8,515
Net cash flows from business combinations	₩ 124,004

X

- Definition

The amount recognised as of the acquisition date for cash and cash equivalents acquired in a business combination. [Refer: Cash and cash equivalents; Total for all business combinations [member]]

+ References

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X

- Definition

The fair value, at acquisition date, of cash transferred as consideration in a business combination. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Net cash flows from business combinations.

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