XML 141 R126.htm IDEA: XBRL DOCUMENT v3.20.4

GOODWILL AND INTANGIBLE ASSETS OF INDEFINITE USEFUL LIFE (Details) - Schedule of CGU is sensitive to annual growth, discount and exchange rates - Air Transportation CGU [Member]	12 Months Ended
	Dec. 31, 2020
GOODWILL AND INTANGIBLE ASSETS OF INDEFINITE USEFUL LIFE (Details) - Schedule of CGU is sensitive to annual growth, discount and exchange rates [Line Items]
Increase Maximum WACC	9.65%
Decrease Minimum terminal growth rate	0.60%

X

- Definition

Decrease minimum terminal growth rate.

+ References

No definition available.

+ Details

Name:	ltm_DecreaseMinimumTerminalGrowthRate
Namespace Prefix:	ltm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	ltm_GOODWILLANDINTANGIBLEASSETSOFINDEFINITEUSEFULLIFEDetailsScheduleofCGUissensitivetoannualgrowthdiscountandexchangeratesLineItems
Namespace Prefix:	ltm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Related to discount rate term.

+ References

No definition available.

+ Details

Name:	ltm_WeightedAverageCostOfCapitalDiscountRate
Namespace Prefix:	ltm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis=ltm_AirTransportationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: