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[Policy Text Block] Weighted average shares, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Canceled, weighted average exercise price (USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Document Information [Line Items] Document Information [Line Items] Accrued severance and realignment costs Restructuring Reserve, Current Plan Name [Domain] Plan Name [Domain] Ownership percentage Equity Method Investment, Ownership Percentage Revenue from Contracts with Customer Revenue from Contract with Customer [Text Block] Right-of-use assets obtained in exchange for new operating lease liabilities (1) Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Long-term debt, fair value Long-term Debt, Fair Value Equity Awards and Instruments Shareholders' Equity and Share-based Payments [Text 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Commitment [Table] Long-term Purchase Commitment [Table] Local Phone Number Local Phone Number Cash paid at closing Payments to Acquire Businesses, Gross Finite-lived Intangible Assets Amortization Expense Finite-lived Intangible Assets Amortization Expense [Table Text Block] Share-based Payment Arrangement, Tranche One Share-based Payment Arrangement, Tranche One [Member] Stock options exercised, intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Derivative [Line Items] Derivative [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Stock options exercise price, upper limit (USD per share) Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Long-term debt, gross Long-term Debt, Gross Convertible senior notes expenses included in Accounts payable and Accruals and other current liabilities Convertible Debt Costs Accrued During Period Convertible Debt Costs Accrued During Period Deferred revenues Contract with Customer, Liability Number of trading days after the end of applicable quarter, shares determined upon election by volume-weighted average price Number Of Trading Days After The End Of Applicable Quarter, Shares Determined Upon Election By Volume-Weighted Average Price Number Of Trading Days After The End Of Applicable Quarter, Shares Determined Upon Election By Volume-Weighted Average Price Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Stock option exercises, net Stock Issued During Period, Value, Stock Options Exercised Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Award Type [Axis] Award Type [Axis] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Enterprise subscriptions Enterprise License Subscriptions [Member] Enterprise License Subscriptions Amortization and write-off of deferred debt issuance costs Amortization of Debt Issuance Costs Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Seequent Seequent [Member] Seequent Accumulated deficit Retained Earnings [Member] Debt covenant, percent of note holders threshold by amount of principal outstanding Debt Covenant, Percent Of Note Holders Threshold By Amount Of Principal Outstanding Debt Covenant, Percent Of Note Holders Threshold By Amount Of Principal Outstanding Preferred stock shares outstanding (in shares) Preferred Stock, Shares Outstanding Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Weighted remaining contractual life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Award Type [Domain] Award Type [Domain] Realignment Costs Rollforward Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Weighted average exercise price, shares exercisable (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Property and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage CSS deposits Deposit Liability, Current Aircraft Air Transportation Equipment [Member] Hosted Software Solutions Hosted Software Solutions [Member] Hosted Software Solutions Company's adjusted Management Reported Operating Income (MORI) threshold for bonus plan (up to) Deferred Compensation Arrangement With Individual, Management Report Operating Income Funding Threshold Deferred Compensation Arrangement With Individual, Management Report Operating Income Funding Threshold Earnings Per Share Earnings Per Share [Text Block] Borrowings guaranteed through stock of foreign subsidiaries (as a percent) Line of Credit Facility, Borrowings Guaranteed through Stock of Foreign Subsidiaries, Percentage Line of Credit Facility, Borrowings Guaranteed through Stock of Foreign Subsidiaries, Percentage Current liabilities: Liabilities, Current [Abstract] Shares withheld for tax withholding obligation (in shares) Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Debt covenant, cross-defaults of other debt threshold Debt Covenant, Cross-Defaults Of Other Debt Threshold Debt Covenant, Cross-Defaults Of Other Debt Threshold Recent Accounting Pronouncements and Recently Adopted Accounting Guidance New Accounting Pronouncements, Policy [Policy Text Block] Statement of Financial Position [Abstract]