Disclosure of transactions between related parties [table] Disclosure of transactions between related parties [table] Revenue from Contracts with Customers [Abstract] Revenue from Contracts with Customers [Abstract] Liabilities [member] Liabilities [member] Citibank Revolving Credit Facility Citibank Revolving Credit Facility [Member] Citibank Revolving Credit Facility Common Share Issued capital [member] Disclosure of reconciliation of summarised financial information of joint venture accounted for using equity method to carrying amount of interest in joint venture Disclosure of reconciliation of summarised financial information of joint venture accounted for using equity method to carrying amount of interest in joint venture [text block] Net income (loss) for the period Net loss for the year Net income (loss) Profit (loss) Investment in equity securities Debt securities [member] Assets [abstract] Assets [abstract] Adjustments to reconcile net (loss) income to net cash provided by 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liabilities [table] Gains on disposals of property, plant and equipment Gains on disposals of property, plant and equipment Total other comprehensive income (loss) for the period Other comprehensive loss Other comprehensive income Revenue recognized over time Goods or services transferred over time [member] Current lease liabilities Current lease liabilities TPI Loan TPI Loan [Member] TPI Loan Other income, net Other operating income (expense) Gross profit Gross profit Disclosure of terms and conditions of share-based payment arrangement [line items] Disclosure of terms and conditions of share-based payment arrangement [line items] Borrowings by name [member] Borrowings by name [member] Due to related parties Amounts payable, related party transactions Purchases of property, plant and equipment Purchase of property, plant and equipment, classified as investing activities Other operating activities Other inflows (outflows) of cash, classified as operating activities Trade and other 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Park East Fishkill i. Park East Fishkill [Member] i. Park East Fishkill Equity [abstract] Equity [abstract] Non-current assets [abstract] Non-current assets [abstract] Non-current assets [abstract] Share of foreign exchange fluctuation reserve of joint ventures Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, before tax Par value per share (in dollars per share) Par value per share Accumulated other comprehensive income Accumulated other comprehensive income Equity and liabilities [abstract] Equity and liabilities [abstract] Societe Generale Singapore Revolving Credit Facility Societe Generale Singapore Revolving Credit Facility [Member] Societe Generale Singapore Revolving Credit Facility Share of profits for the period Share of profit (loss) from continuing operations of associates and joint ventures accounted for using equity method Other receivables Other current receivables Beginning balance Ending balance Investments in joint ventures accounted for using equity method Receivables from related parties (Note 29) Current receivables due from related parties Total assets Total financial assets Assets Entity's total for related parties [member] Entity's total for related parties [member] Financial assets, category [member] Financial assets, category [member] Basic loss per share (in USD per share) Total basic EPS attributable to equity shareholders (in USD per share) Basic earnings (loss) per share Joint operations Joint operations [member] Current provisions Current provisions Total Loans and borrowings Borrowings Shareholders of GLOBALFOUNDRIES INC. Net income (loss) available to equity shareholders of the Company Profit (loss), attributable to owners of parent CASH FLOWS FROM OPERATING ACTIVITIES Cash flows from (used in) operating activities [abstract] Profit (loss) from operations Profit (loss) from operating activities Net proceeds from borrowings Proceeds from borrowings, classified as financing activities Effective portion of changes in the fair value of cash flow hedges Other comprehensive income, before tax, cash flow hedges Payment in Lieu of Tax (“PILOT”’) Bonds Non-Current Bonds Receivable Non-Current Bonds Receivable Research and development expenses Research and development expense Silicon Manufacturing Partners Pte Ltd. (“SMP”) SMP [Member] SMP Disclosure of detailed information about borrowings [table] Disclosure of detailed information about borrowings [table] Levels of fair value hierarchy [axis] Levels of fair value hierarchy [axis] Total comprehensive income (loss) for the period Comprehensive income Purchases from Purchases of goods, related party transactions Non-trade receivables Non-Current Nontrade Receivables Non-Current Nontrade Receivables Total Equity attributable to owners of parent [member] Fair Value Financial assets, at fair value Trade receivables, other than related parties Current trade receivables Accounting Policies, Changes In Accounting Estimates And Errors [Abstract] Accounting Policies, Changes In Accounting Estimates And Errors [Abstract] Assets [member] Assets [member] Share-based payments Increase (decrease) through share-based payment transactions, equity Non- controlling Interest Non-controlling interests [member] Shareholders of GLOBALFOUNDRIES INC. Comprehensive income, attributable to owners of parent Share-Based Payment Arrangement, Shares Available Share-Based Payment Arrangement, Shares Available Share-Based Payment Arrangement, Shares Available USD Term Loan A USD Term Loan A [Member] USD Term Loan A Engineering and other pre-fabrication services Engineering And Other Pre-Fabrication Services [Member] Engineering And Other Pre-Fabrication Services Shareholders of GLOBALFOUNDRIES INC. Other comprehensive income, attributable to owners of parent Disclosure of contingent liabilities [table] Disclosure of contingent liabilities [table] Net cash provided by operating activities Cash flows from (used in) operating activities Statement of financial position [abstract] Accounts Receivable Factoring Accounts Receivable Factoring [Member] Accounts Receivable Factoring Revenue Revenue from contracts with customers Selling, general and administrative expenses Selling, general and administrative expense Minimum Minimum [Member] Long-Term Debt Disclosure of borrowings [text block] Document Period End Date Document Period End Date EUR Term Loan A EUR Term Loan A [Member] EUR Term Loan A Entity Central Index Key Entity Central Index Key Level 1 Level 1 of fair value hierarchy [member] Advances and proceeds from sale of property, plant and equipment and intangible assets Proceeds from disposals of property, plant and equipment, intangible assets other than goodwill, investment property and other non-current assets Additional Paid-In Capital Additional paid-in capital [member] Prepaid expenses Non-Current Prepaid Expenses Non-Current Prepaid Expenses Statement of changes in equity [table] Statement of changes in equity [table] Fair value measurement Disclosure of fair value measurement [text block] Number of shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Number of shares outstanding Disclosure of terms and conditions of share-based payment arrangement [table] Disclosure of terms and conditions of share-based payment arrangement [table] Profit (loss) before income taxes Profit (loss) before tax Trade and other current payables Trade and other current payables Current portion of non-current borrowings Current total Current portion of non-current borrowings Fair value measurements of assets and liabilities [Abstract] Fair value measurements of assets and liabilities [Abstract] Disclosure of detailed information about property, plant and equipment [abstract] Related Party Disclosures Disclosure of related party [text block] Finance expenses, net Finance costs Intangible assets and goodwill Intangible assets and goodwill Non-current government grants Non-current government grants Inventories Adjustments for decrease (increase) in inventories Depreciation Adjustments for depreciation expense Share-Based Payment Arrangement, Maximum Shares Issuable Share-Based Payment Arrangement, Maximum Grant Limit Share-Based Payment Arrangement, Maximum Grant Limit Receivables, Prepayments and Other Assets Disclosure of trade and other receivables [text block] Voting rights (as a percent) Proportion of voting rights held in joint venture Revenue recognized during the year Current Unbilled Receivables, Revenue Recognized During The Year Current Unbilled Receivables, Revenue Recognized During The Year Share-based payment arrangements [Abstract] Share-based payment arrangements [Abstract] Net earnings (loss) per share attributable to the equity holders of the Company: Earnings per share [abstract] Interest and income taxes paid Interest And Income Taxes Paid Interest And Income Taxes Paid Share-based compensation Adjustments for share-based payments Net revenue Revenue Total equity and liabilities Equity and liabilities Disclosure of joint ventures [line items] Disclosure of joint ventures [line items] Amortization of deferred income from government grants Adjustments For Amortization Of Deferred Income From Government Grants Adjustments For Amortization Of Deferred Income From Government Grants Loan from Shareholder Loan From Shareholder [Member] Loan From Shareholder Finance income Finance income Income tax expense Tax expense (income) Tax expense (income) Inventories Disclosure of inventories [text block] Earnings Per Share Disclosure of earnings per share [text block] Employee Share Purchase Plan Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan Disclosure of transactions between related parties [line items] Disclosure of transactions between related parties [line items] Dividends declared during the period Dividends received Other non-current financial assets Other non-current financial assets PILOT Bonds, Letters Of Credit PILOT Bonds, Letters Of Credit [Member] PILOT Bonds, Letters Of Credit 2019 USD Dresden Equipment Financing 2019 USD Dresden Equipment Financing [Member] 2019 USD Dresden Equipment Financing Provisions Other provisions Non-current liabilities [abstract] Non-current liabilities [abstract] Contracts for operating expenditures Contractual Operating Commitments Contractual Operating Commitments Operating expenses Operating expense Schedule of disaggregation of revenue Disclosure of disaggregation of revenue from contracts with customers [text block] Interest paid Interest paid, classified as operating activities Contractual capital and operating commitments Contractual Capital And Operating Commitments Contractual Capital And Operating 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[Member] Cash And Cash Equivalents [Member] Schedule of basic and diluted earnings per share Earnings per share [text block] Contracts for capital expenditures Contractual capital commitments Goodwill and Intangible Assets Disclosure of intangible assets and goodwill [text block] Total current assets Current assets Other Other non-current assets Other non-current liabilities Other non-current liabilities Borrowings by name [axis] Borrowings by name [axis] Amounts payable for intangible assets Amounts Payable For Intangible Assets Amounts Payable For Intangible Assets Noncash investing and financing activities: Non-Cash Investing And Financing Activities [Abstract] Non-Cash Investing And Financing Activities Disclosure of fair value measurement of assets and liabilities Disclosure of fair value measurement of assets [text block] Total other comprehensive income (loss) Other comprehensive income that will be reclassified to profit or loss, net of tax Property, Plant And Equipment Disclosure of property, plant and equipment [text block] 2018 IKB Term Loan 2018 IKB Term Loan [Member] 2018 IKB Term Loan Categories of related parties [axis] Categories of related parties [axis] Entity's total for joint ventures [member] Entity's total for joint ventures [member] Total liabilities Total financial liabilities Liabilities Gain on disposal of property, plant and equipment Adjustments for gain (loss) on disposals, property, plant and equipment Amortization of intangible assets Adjustments for amortisation expense Non-controlling interest Other comprehensive income, attributable to non-controlling interests Net (decrease) increase in cash and cash equivalents Increase (decrease) in cash and cash equivalents after effect of exchange rate changes Deferred tax assets Deferred tax assets Intangible Assets [Abstract] Intangible Assets [Abstract] Intangible Assets [Abstract] 2018 IKB Term Loan 2 2018 IKB Term Loan 2 [Member] 2018 IKB Term Loan 2 Components of other 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Disclosure of income tax [text block] Schedule of inventories Schedule Of Inventory, Current [Table Text Block] Schedule Of Inventory, Current Level 2 Level 2 of fair value hierarchy [member] Wafer fabrication Water Fabrication [Member] Water Fabrication Non-Current Prepayments And Other Current Assets Total Non-Current Prepayments And Other Current Assets Non-Current Prepayments And Other Current Assets Derivatives Derivatives [member] Due from related parties Amounts receivable, related party transactions Various Loans Two Various Loans Two [Member] Various Loans Two Commitments and Contingencies Disclosure of commitments and contingent liabilities [text block] Entity's total for joint operations [member] Entity's total for joint operations [member] Property, plant and equipment acquired through lease Property, Plant And Equipment Acquired Through Lease Property, Plant And Equipment Acquired Through Lease Finance expenses, net Adjustments for finance costs Cost of revenue Cost of sales Cash and cash equivalents Cash and cash equivalents at the beginning of the period Cash and cash equivalents at the end of the period Cash and cash equivalents Components of equity [axis] Components of equity [axis] Non-current portion of non-current borrowings Noncurrent total Non-current portion of non-current borrowings Non-current provisions Non-current provisions Current Fiscal Year End Date Current Fiscal Year End Date Work in progress, net Current work in progress Retained earnings Retained earnings Inventory Reserve Inventory Reserve, Current Inventory Reserve, Current Trade and other current receivables [abstract] Property, plant and equipment Property, plant and equipment Total non-current assets Non-current assets 2020 USD Equipment Financing 2020 USD Equipment Financing [Member] 2020 USD Equipment Financing Attributable to: Comprehensive income attributable to [abstract] Profit or loss [abstract] Inventories [Abstract] Inventories [Abstract] Receivables from government grants Current Receivables From Government Grants Current Receivables From Government Grants Borrowing costs Abstract [Abstract] Borrowing costs [Abstract] Types of share-based payment arrangements [axis] Types of share-based payment arrangements [axis] Maximum Maximum [Member] Diluted weighted average common shares outstanding (in shares) Weighted average shares outstanding, diluted (in shares) Weighted average number of ordinary shares used in calculating diluted earnings per share Statistical Measurement [Axis] Statistical Measurement [Axis] Beginning balance Ending balance Current Unbilled Receivables Current Unbilled Receivables SMP Joint ventures where entity is venturer [member] Summary of commitments Disclosure of commitments [text block] Various Debt One Various Debt One [Member] Various Debt One Other current financial assets Other current financial assets Other investing activities Other inflows (outflows) of cash, classified as investing activities Disposals of property, plant and equipment Disposals, property, plant and equipment Net cash (used in) provided by financing activities Cash flows from (used in) financing activities 2021 SGD EDB Loan 2021 SGD EDB Loan [Member] 2021 SGD EDB Loan Additions Additions other than through business combinations, intangible assets other than goodwill Schedule of accounts receivable Disclosure Of Detailed Information About Accounts Receivable [Table Text Block] Disclosure Of Detailed Information About Accounts Receivable Non-controlling interests Non-controlling interests Repayments of shareholder loan Repayments Of Shareholder Loans Repayments Of Shareholder Loans Share-Based Payments Disclosure of share-based payment arrangements [text block] 2019 Tool Equipment Purchase and Lease Financing 2019 Tool Equipment Purchase and Lease Financing [Member] 2019 Tool Equipment Purchase and Lease Financing Hedging Reserve Reserve of cash flow hedges [member] Income tax paid Income taxes paid, classified as operating activities All levels of fair value hierarchy [member] All levels of fair value hierarchy [member] Cash flows from (used in) operations Cash flows from (used in) operations Equity Equity [member] Total equity attributable to owners of parent Equity attributable to owners of parent