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ASSET RETIREMENT OBLIGATION: (Details) $ in Millions		3 Months Ended	12 Months Ended
	Jun. 24, 2019	Mar. 31, 2022 USD ($)	Dec. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($)	Dec. 31, 2019 USD ($)	Jan. 31, 2024 USD ($)
ASSET RETIREMENT OBLIGATION:
Asset retirement obligation, increase (decrease) in asset due to revision in estimate				$ (43.3)
Maximum annual guarantees secured	50.00%
Percentage of guarantee for Lima complex			50.00%
Percentage of security for LOC			50.00%
Total guarantees						$ 87.7
Asset retirement obligation activity
Balance at the beginning of the year		$ 562.9	$ 585.3	562.9
Changes in estimates			0.2	(10.8)
Additions			1.0	11.9
Closure payments			(0.3)	(7.1)
Accretion expense			26.3	28.4
Balance at the end of the year			$ 612.5	585.3
Cost of goods sold
ASSET RETIREMENT OBLIGATION:
Asset retirement obligations, increase (decrease) in estimate				(16.2)
Peru
ASSET RETIREMENT OBLIGATION:
Period after which successive reviews are required by the law (in years)			5 years
Number of units with future closure costs recognized as an asset retirement obligation | item			3
Change in asset retirement liability				$ (59.5)
Asset retirement obligation activity
Changes in estimates					$ 28.1
Mexico
Asset retirement obligation activity
Changes in estimates		$ 43.3

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- Definition

The amount of increase (decrease) in asset retirement obligation asset due to revision of estimate.

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Represents the period after which successive reviews are required by the law.

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Represents the number of units for which the entity has recognized an asset retirement obligation.

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he amount of increase (decrease) in asset retirement obligations estimate.

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Maximum percentage of annual guarantees secured.

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Percentage of guarantee pledged for office complex.

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Percentage of guarantee for stand by letters of credit.

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The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481999/410-20-25-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 410
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-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481850/410-20-50-1

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Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481879/410-20-45-1

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Amount of asset retirement obligations incurred during the period.

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-SubTopic 20
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-Section 50
-Paragraph 1
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Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481850/410-20-50-1

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Amount of increase (decrease) in asset retirement obligations.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 410
-SubTopic 20
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-Section 50
-Paragraph 1
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-Publisher FASB
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Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(4)
-Publisher FASB
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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
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