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Borrowings - Summary of Borrowings (Parenthetical) (Detail) ₩ in Millions	Dec. 31, 2019 KRW (₩)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 KRW (₩)
Disclosure of detailed information about borrowings [line items]
Borrowings | ₩	₩ 7,298,867		₩ 6,648,293
Libor rate	1.908%	1.908%
Medium Term Note Programme [member] | Fixed interest rate [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 100,000,000
Medium Term Note Programme [member] | Top of range [member] | Fixed interest rate [member]
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 2,000,000,000

X

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard
-URIDate 2019-03-27

+ Details

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X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

Borrowings, interest rate basis spread on LIBOR rate.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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