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Share-based compensation expense Share-Based Payment Arrangement, Expense Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Finite-Lived Intangible Assets, Gross Finite-Lived Intangible Assets, Gross Income tax expense Income Tax Expense (Benefit) Finished products Inventory, Finished Goods, Net of Reserves Schedule of Derivative Instruments, Effect on Other Comprehensive Loss Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Designated as hedging instruments [Member] Designated as Hedging Instrument [Member] Accrued compensation and benefits Employee-related Liabilities, Current Fair Value Measurements Fair Value Disclosures [Text Block] Name Trading Arrangement, Individual Name Amounts reclassified from accumulated other comprehensive loss Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Pension and other post-retirement benefits actuarial gain amortization Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Net sales Revenue from Contract with Customer, Excluding Assessed Tax Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Amendment Flag Amendment Flag Intangible Assets Intangible Assets Disclosure [Text Block] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Diluted Denominator for diluted income per share for both Class A and Class B Weighted Average Number of Shares Outstanding, Diluted Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Operating expenses: Operating Expenses [Abstract] Purchases of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Company Selected Measure Amount Company Selected Measure Amount Additional paid-in capital Additional Paid in Capital, Common Stock Additional Paid-in Capital Additional Paid-in Capital [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Total Assets Name Awards Close in Time to MNPI Disclosures, Individual Name Cover [Abstract] Cover [Abstract] Subsequent Events Subsequent Events [Text Block] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Payment of dividends Payments of Dividends Other liabilities Other Liabilities, Noncurrent Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Non-NEOs Non-NEOs [Member] Options, Forfeited or expired in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Schedule of Cash Flow, Supplemental Lease Disclosures Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Cash Flow Hedging [Member] Cash Flow Hedging [Member] Total operating expenses Operating Expenses Segment Information Segment Reporting Disclosure [Text Block] Net increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Non-PEO NEO Non-PEO NEO [Member] Equity Component [Domain] Equity Component [Domain] Adjustment to Compensation: Adjustment to Compensation [Axis] Work-in-process Inventory, Work in Process, Net of Reserves Unallocated amounts: Unallocated Amounts [Abstract] Unallocated amounts. Text Block [Abstract] Text Block [Abstract] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Basic Denominator for basic income per share for both Class A and Class B Weighted Average Number of Shares Outstanding, Basic Entity Interactive Data Current Entity Current Reporting Status Administrative costs Administrative Costs Administrative costs. Operating income Operating Income (Loss) Revenue Recognition [Abstract] Revenue Recognition [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Business Segments [Axis] Segments [Axis] Statement [Line Items] Statement [Line Items] Schedule of PRSU Activity Schedule of Nonvested Performance-Based Units Activity [Table Text Block] Options, Outstanding, Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Customer Relationships [Member] Customer Relationships [Member]