Financial Instruments - Summary of Hedge Derivative Instruments and Their Corresponding Hedged Instruments (Detail) - CLP ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
SWAP [Member]
Disclosure Of Hedge Accounting [Line Items]
Type of hedging instrument	SWAP
Description of hedging instrument	Exchange rate
Description of hedged item	Unsecured liabilities (bonds)
Fair value of hedged item	$ (9,530,240)	$ (18,892,399)
Type of risks hedged	Cash flow
Forward [Member]
Disclosure Of Hedge Accounting [Line Items]
Type of hedging instrument	FORWARD
Description of hedging instrument	Exchange rate
Description of hedged item	Revenues
Fair value of hedged item	$ (51,297,502)	$ (26,763,187)
Type of risks hedged	Cash flow

The description of the type of risks hedged.

No definition available.

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- Definition

The description of financial instruments designated as hedging instruments. Hedging instruments are designated derivatives or (for a hedge of the risk of changes in foreign currency exchange rates only) designated non-derivative financial assets or non-derivative financial liabilities whose fair value or cash flows are expected to offset changes in the fair value or cash flows of a designated hedged item. [Refer: Derivatives [member]; Derivative financial assets; Derivative financial liabilities; Financial instruments, class [member]; Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 22
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_22_b&doctype=Standard&book=b
-URIDate 2019-03-27

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- Definition

The description of the nature of risks being hedged.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 22
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_22_c&doctype=Standard&book=b
-URIDate 2019-03-27

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- Definition

The description of the type of a hedge used by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 22
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_22_a&doctype=Standard&book=b
-URIDate 2019-03-27

+ Details

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- 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

The fair value of financial instruments designated as hedging instruments. Hedging instruments are designated derivatives or (for a hedge of the risk of changes in foreign currency exchange rates only) designated non-derivative financial assets or non-derivative financial liabilities whose fair value or cash flows are expected to offset changes in the fair value or cash flows of a designated hedged item. [Refer: At fair value [member]; Derivatives [member]; Derivative financial assets; Derivative financial liabilities; Financial instruments, class [member]; Financial assets; Financial liabilities]

+ References

+ Details

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