Income tax and deferred taxes - Reconciliation of Statutory Tax Rate to Effective Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of accounting profit multiplied by applicable tax rates [abstract]
Consolidated income before taxes	$ 5,486,496	$ 841,221	$ 238,538
Statutory income tax rate in Chile	27.00%	27.00%	27.00%
Tax expense using the statutory tax rate	$ (1,481,354)	$ (227,130)	$ (64,405)
Net effect of royalty tax payments	(57,500)	(13,350)	(4,659)
Tax effect of income from regular activities exempt from taxation and dividends from abroad	3,490	(260)	1,786
Tax rate effect of non-tax-deductible expenses for determining taxable profit (loss)	(11,058)	(2,226)	(2,987)
Tax effect of tax rates supported abroad	(25,053)	(5,622)	(2,077)
Effects of changes resulting from classifying a permanent item as a temporary one		0	4,826
Other tax effects of reconciliation of accounting income to tax expense	(737)	(428)	(2,663)
Income tax expense	$ (1,572,212)	$ (249,016)	$ (70,179)

The amount of profit (loss) for a period before deducting tax expense. [Refer: Profit (loss)]

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The applicable income tax rate.

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The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)]

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that the entity does not separately disclose in the same statement or note. [Refer: Accounting profit; Applicable tax rate]

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to expenses not deductible in determining taxable profit (tax loss). [Refer: Accounting profit]

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to foreign tax rates. [Refer: Accounting profit]

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to tax losses. [Refer: Accounting profit]

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The product of the accounting profit multiplied by the applicable tax rate(s). [Refer: Accounting profit; Applicable tax rate]

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Effective of changes resulting from classifying a permanent item as a temporary one.

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to revenues that are exempt from taxation. [Refer: Accounting profit]

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