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Rates Schedule of Long-Term Interest Rates [Table Text Block] Schedule of Long-Term Interest Rates [Table Text Block] Risks and Concentrations Concentration Risk, Credit Risk, Policy [Policy Text Block] Test Equipment, Useful Lives Test Equipment, Useful Lives [Member] Test Equipment, Useful Lives Qualified domestic minimum top-up tax (QDMTT) Effective Income Tax Rate Reconciliation, Qualified Domestic Minimum Top-up Tax, Percent Effective Income Tax Rate Reconciliation, Qualified Domestic Minimum Top-up Tax, Percent LIABILITIES AND EQUITY Liabilities and Equity [Abstract] U.S. state net operating loss carryforwards State and Local Jurisdiction [Member] Gain Contingencies [Table] Gain Contingencies [Table] Cover [Abstract] Cover [Abstract] Fair Value Measurement Portion at Fair Value Measurement [Member] Maximum Maximum [Member] Exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Receivable Deferred Tax Assets, Other Deferred Liabilities Deferred Tax Assets, Other Deferred Liabilities Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Rate of compensation increase for determining benefit obligations at December 31 (as a percent) Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase Term loan, fixed rate at 1.59%, due December 2027 Term Loan Fixed Rate At 1.59% Due December 2027 [Member] Term Loan Fixed Rate At 1.59% Due December 2027 U.S. Foreign Tax Credits Foreign Tax Credit Carryforward [Member] Foreign Tax Credit Carryforward [Member] Schedule Of Government Assistance Schedule Of Government Assistance [Table Text Block] Schedule Of Government Assistance Award vesting percentage of target grant amount Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Percentage Of Target Grant Amount Share-Based Compensation Arrangement by 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Arrangement Terminated [Flag] Grants receivable recorded in: Grant Receivable [Member] Grant Receivable Investment tax credits recorded in: Investment Tax Credits [Member] Investment Tax Credits Income before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Schedule of Net Sales by Country, and Property, Plant and Equipment by Physical Location Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Schedule of Fair Value of Financial Instruments that are not Recorded at Fair Value on Recurring Basis Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Proceeds from sale of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Statement of Stockholders' Equity [Abstract] Statement of 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for determining net periodic pension cost (as a percent) Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Award Timing Method Award Timing Method [Text Block] Furniture, fixtures and other equipment Furniture, fixtures and other equipment Furniture and Fixtures [Member] Award Type [Axis] Award Type [Axis] Remaining lease term Lease, Remaining Lease Term Lease, Remaining Lease Term Korean won Korea (South), Won Trading Symbol Trading Symbol 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Changes in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Issuance of stock through share-based compensation plans (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Entity Address, City or Town Entity Address, City or Town Short-Term Debt, Type [Domain] Short-Term Debt, Type [Domain] Weighted average discount rate, Finance leases Finance Lease, Weighted Average Discount Rate, Percent Other Other Nonoperating Income (Expense), Net The net of miscellaneous income and expense items that are combined together as a component of Other Nonoperating Income (Expense). Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Foreign currency gain (loss) Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) Total deferred tax assets net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Restricted Stock Units (RSUs) & Performance Stock Units (PSUs) Restricted Stock Units (RSUs) [Member] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Term Loan, fixed rate at 1.85%, Due April2024 Term Loan, fixed rate at 1.85%, Due April 2024 [Member] Term Loan, fixed rate at 1.85%, Due April2024 Reductions related to settlements with tax authorities Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Entity Emerging Growth Company Entity Emerging Growth Company 2028 Long-Term Debt, Maturity, Year Three Weighted average remaining lease term, Finance leases Finance Lease, Weighted Average Remaining Lease Term Outstanding beginning balance (in shares) Outstanding ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Debt issuance costs Debt Issuance Costs, Net Difference between forward rate and spot rate of the forward contracts Derivative, Gain (Loss) on Derivative, Net 2026 Defined Benefit Plan, Expected Future Benefit Payment, Year One Deferred gain Deferred Tax Liabilities, Tax Deferred Income Less: Imputed interest Finance Lease, Liability, Undiscounted Excess Amount Common stock, shares outstanding (in shares) Balance at beginning of period, common stock (in shares) Balance at end of period, common stock (in shares) Common Stock, Shares, Outstanding Reportable Segment Reportable Segment [Member] Reportable Segment Tax benefit from income tax holiday Income Tax Holiday, Aggregate Dollar Amount Prepaid benefit cost (included in non-current assets) Assets for Plan Benefits, Defined Benefit Plan Income taxes payable Accrued Income Taxes, Current Valuation allowance reversed Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Schedule of Property, Plant and Equipment, Net, Based on Physical Location Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Change in projected benefit obligation: Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Interest rate at end of period (as a percent) Debt Instrument, Interest Rate, Effective Percentage Pledged Status [Domain] Pledged Status [Domain] Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Total tax provision and effective tax rate Income tax expense Income Tax Expense (Benefit) Interest rate spread (as a percent) Debt Instrument, Basis Spread on Variable Rate Increase of quarterly dividends, percentage Common Stock, Dividends, 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Debt instrument, redemption price, percent Debt Instrument, Redemption Price, Percentage Fully vested and expected to vest (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Accrued expenses Total accrued expenses Accrued Liabilities, Current Contingencies and Litigation Commitments and Contingencies, Policy [Policy Text Block] Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Aggregate accumulated benefit obligation Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation Nonvested beginning balance (in shares) Nonvested ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Payments of short-term debt Repayments of Short-Term Debt Effective Income Tax Rate Reconciliation [Table] Effective Income Tax Rate Reconciliation [Table] Useful life Property, Plant and Equipment, Useful Life Preferred stock designated Series A, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Philippine peso Philippines, Pesos Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Proceeds from sale of short-term investments Proceeds from Sale of Short-Term Investments PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Depreciation expense Depreciation Money market funds Money Market Funds [Member] Fully vested and expected to vest (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, 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Severance benefits are estimated assuming all eligible employees were to terminate their employment at the balance sheet date. Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Pension and Severance Plans Compensation and Employee Benefit Plans [Text Block] Term loan, fixed rate at 1.20%, due December 2025 Term Loan, Fixed Rate at 1.20% Due December 2025 [Member] Term Loan, Fixed Rate at 1.20% Due December 2025 Property, plant and equipment acquired through grants Noncash or Part Noncash Acquisition, Property, Plant and Equipment Acquired through Government Grant Noncash or Part Noncash Acquisition, Property, Plant and Equipment Acquired through Government Grant Deferred tax assets: Components of Deferred Tax Assets [Abstract] Schedule of Significant Accounting Policies [Line Items] Schedule of Significant Accounting Policies [Line Items] Schedule of Significant Accounting Policies [Line Items] Entity Address, State or Province Entity Address, State or Province Payments of finance lease obligations Financing cash flows for finance leases Finance Lease, Principal Payments 2029 Defined Benefit Plan, Expected Future Benefit Payment, Year Four Euro dollar Euro Member Countries, Euro Net operating lease ROU asset Increase (Decrease) In Operating Lease Right-of-use Assets, Net Increase (Decrease) In Operating Lease Right-of-use Assets, Net Amount of unused borrowing capacity Debt Instrument, Unused Borrowing Capacity, Amount Total current liabilities Liabilities, Current Individual: Individual [Axis] Capital expenditures payable Capital Expenditures Payable Amount owed for capital expenditures. Cost recognized Defined Contribution Plan, Cost Total property, plant and equipment Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Equity funds Mutual and Commingled Equity Funds [Member] Mutual and Commingled Equity Funds Right of use assets acquired through finance lease liabilities Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Payments of dividends Payments of Ordinary Dividends, Common Stock Document Annual Report Document Annual Report Research and Development Expense Research and Development Expense [Member] Settlement Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement Cash and cash equivalents Defined Benefit Plan, Cash and Cash Equivalents [Member] Asset-backed securities, amortized cost Debt Securities, Available-for-Sale, Maturity, without Single Maturity Date, Amortized Cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Entity Interactive Data Current Entity Interactive Data Current Mainstream Products Mainstream Products [Member] Mainstream Products [Member] Government Assistance, Type [Axis] Government Assistance, Type [Axis] Finance lease, consideration paid for underlying asset Finance Lease, Consideration Paid For Underlying Asset Finance Lease, Consideration Paid For Underlying Asset Proceeds from foreign exchange forward contracts Proceeds from Derivative Instrument, Investing Activities Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Funded status of the Plans at December 31 Defined Benefit Plan, Funded (Unfunded) Status of Plan Relative Total Shareholder Return PSUs Relative Total Shareholder Return PSUs [Member] Relative Total Shareholder Return PSUs Total, fair value Debt Securities, Available-For-Sale, And Cash Equivalents, Fair Value Disclosure Debt Securities, Available-For-Sale, And Cash Equivalents, Fair Value Disclosure Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Subsidiary Term Loans Subsidiary Term Loans [Member] Subsidiary Term Loans [Member] Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Area of land Area of Land Property, Plant and Equipment by Type [Axis] Long-Lived Tangible Asset [Axis] 2027 Finance Lease, Liability, to be Paid, Year Two Balance at Beginning of Period Balance at End of Period SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount 2027 Defined Benefit Plan, Expected Future Benefit Payment, Year Two Other assets Other Assets, Noncurrent Accrued interest Interest Payable, Current U.S. Other Tax Credits Other Tax Credit Carryforward [Member] Other Tax Credit Carryforward [Member] Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Guaranteed investment contracts Foreign Guaranteed Investment Contract [Member] Foreign Guaranteed Investment Contract [Member] FX gain/loss Effective Income Tax Reconciliation, Foreign Exchange Gain (Loss), Percent The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations that is attributable to gains or losses on foreign exchange. Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Curtailment (gain) loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Defined Benefit Plan [Table] Defined Benefit Plan [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Contract with customer, liability, current Deferred revenue 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Research and development Research and development Research and Development Expense Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Allowance Accounts Receivable, Allowance for Credit Loss, Current Treasury stock acquired through surrender of shares for tax withholding (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Gain (loss) on foreign currency derivative instruments not designated as hedging instruments Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Audit Information [Abstract] Audit Information Total Defined Benefit Pension Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Fair Value as of Grant Date Award Grant Date Fair Value Schedule of Other (Income) Expense Schedule of Other Nonoperating Income (Expense) [Table Text Block] Operating loss carryforwards Operating Loss Carryforwards Changes in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Share-based awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Awards granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Cash equivalents, gross unrealized losses Cash Equivalents, Gross Unrealized Losses Cash Equivalents, Gross Unrealized Losses Awards forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unrecognized compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Senior Notes Due October 2033 Senior Notes Due October 2033 [Member] Senior Notes Due October 2033 Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Insolvency payment (Note 17) Effective Income Tax Rate Reconciliation, Insolvency Payment, Amount Effective Income Tax Rate Reconciliation, Insolvency Payment, Amount Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Outstanding (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] Title Trading Arrangement, Individual Title Peer Group Total 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Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Unrecognized tax benefits, reduction of deferred tax assets Unrecognized Tax Benefits, Reduction Of Deferred Tax Assets Unrecognized Tax Benefits, Reduction Of Deferred Tax Assets Schedule of Amounts Recognized in Other Comprehensive Income (Loss) Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Balance at beginning of the year Balance at the end of year Deferred Compensation Cash-Based Arrangements, Liability, Current and Noncurrent Time-Vested Restricted Stock Units Time-Vested Restricted Stock Units [Member] Time-Vested Restricted Stock Units Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] After 5 years through 10 Years, Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Plans with underfunded or non-funded accumulated benefit obligation: Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract] Performance-Vested Restricted Stock Units Performance-Vested Restricted Stock Units [Member] Performance-Vested Restricted Stock Units Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Foreign earnings and profits Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] 2026 Long-Term Debt, Maturity, Year One Financial Instruments [Domain] Financial Instruments [Domain] Adjustments to net unrealized gains (losses) on available-for-sale debt investments OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Total deferred tax liabilities Deferred Tax Liabilities, Gross 2030 Long-Term Debt, Maturity, Year Five Europe, Middle East and Africa EMEA [Member] Accumulated Other Comprehensive Income (Loss), Net of Tax 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