XML 124 R87.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Income and other taxes - Change in deferred income tax liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Net |  |
Net, beginning of period | $ (153,639) | $ (223,757)
Deferred income tax recovery (expense) included in net income (loss) | (10,284) | 63,956
Impact of U.S. tax rate change in other comprehensive income | (8,621) | 0
Deferred income tax recovery (expense) included in other comprehensive income (loss) | 9,295 | 6,597
Other | (842) | (435)
Net, end of period | (164,091) | (153,639)
Deferred tax assets |  |
Deferred tax assets, beginning of period | 137,341 | 61,881
Deferred income tax recovery (expense) included in net income (loss) | (34,517) | 69,110
Impact of U.S. tax rate change in other comprehensive income | (8,621) | 0
Deferred income tax recovery (expense) included in other comprehensive income (loss) | 8,398 | 6,364
Other | (260) | (14)
Deferred tax assets, end of period | 102,341 | 137,341
Deferred tax liabilities |  |
Deferred tax liabilities, beginning of period | (290,980) | (285,638)
Deferred income tax recovery (expense) included in net income (loss) | 24,233 | (5,154)
Impact of U.S. tax rate change in other comprehensive income | 0 | 0
Deferred income tax recovery (expense) included in other comprehensive income (loss) | 897 | 233
Other | (582) | (421)
Deferred tax liabilities, end of period | $ (266,432) | $ (290,980)

X
- Definition The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_g_i&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph o -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_o&doctype=Standard -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 56 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_56&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DeferredTaxAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph g -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_g_ii&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of deferred tax expense or income relating to tax rate changes or the imposition of new taxes. [Refer: Deferred tax expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 80 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_80_d&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amounts of income taxes payable in future periods in respect of taxable temporary differences. [Refer: Temporary differences [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_g_i&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph o -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_o&doctype=Standard -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 56 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_56&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DeferredTaxLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_g_i&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DeferredTaxLiabilityAsset
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_NetDeferredTaxAssetsAndLiabilitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred Tax Assets [Abstract] + References No definition available. + Details
Name: | mx_DeferredTaxAssetsAbstract
Namespace Prefix: | mx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred Tax Assets, Deferred Tax Expense (Income) Recognized In Profit Or Loss + References No definition available. + Details
Name: | mx_DeferredTaxAssetsDeferredTaxExpenseIncomeRecognizedInProfitOrLoss
Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Deferred Tax Assets, Deferred Tax Expense (Income) Relating To Tax Rate Changes Or Imposition Of New Taxes + References No definition available. + Details
Name: | mx_DeferredTaxAssetsDeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes
Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Deferred Tax Assets, Income Tax Relating To Components Of Other Comprehensive Income + References No definition available. + Details
Name: | mx_DeferredTaxAssetsIncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Deferred Tax Assets, Other Increase (Decrease) + References No definition available. + Details
Name: | mx_DeferredTaxAssetsOtherIncreaseDecrease
Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Deferred Tax Expense (Income) Recognised In Other Comprehensive Income (Loss) + References No definition available. + Details
Name: | mx_DeferredTaxExpenseIncomeRecognisedInOtherComprehensiveIncomeLoss
Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Deferred Tax Liabilities [Abstract] + References No definition available. + Details
Name: | mx_DeferredTaxLiabilities1Abstract
Namespace Prefix: | mx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred Tax Liabilities, Deferred Tax Expense (Income) Recognized In Profit Or Loss + References No definition available. + Details
Name: | mx_DeferredTaxLiabilitiesDeferredTaxExpenseIncomeRecognizedInProfitOrLoss
Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Deferred Tax Liabilities, Deferred Tax Expense (Income) Relating To Tax Rate Changes Or Imposition Of New Taxes + References No definition available. + Details
Name: | mx_DeferredTaxLiabilitiesDeferredTaxExpenseIncomeRelatingToTaxRateChangesOrImpositionOfNewTaxes
Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Deferred Tax Liabilities, Income Tax Relating To Components Of Other Comprehensive Income + References No definition available. + Details
Name: | mx_DeferredTaxLiabilitiesIncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Deferred Tax Liabilities, Other Increase (Decrease) + References No definition available. + Details
Name: | mx_DeferredTaxLiabilitiesOtherIncreaseDecrease
Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other Increase (Decrease) In Deferred Tax Liability (Asset) + References No definition available. + Details
Name: | mx_OtherIncreaseDecreaseInDeferredTaxLiabilityAsset
Namespace Prefix: | mx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration