Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Acquired Indefinite-lived Intangible Assets by Major Class [Table] Schedule of Acquired Indefinite-lived Intangible Assets by Major Class [Table] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] IPR&D In Process Research and Development [Member] Acquired Indefinite-lived Intangible Assets [Line Items] Acquired Indefinite-lived Intangible Assets [Line Items] IPR&D Indefinite-lived Intangible Assets (Excluding Goodwill) Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Developed technologies Developed Technology Rights [Member] Customer contracts and related relationships Customer Contracts And Relationships [Member] Customer Contracts And Relationships [Member] Trade names Trade Names [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Gross Carrying Amounts Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Net Carrying Amounts Finite-Lived Intangible Assets, Net Weighted average remaining amortization period (years) Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Gross Carrying Amounts, Total acquired intangible assets Intangible Assets, Gross (Excluding Goodwill) Accumulated Amortization Net Carrying Amounts, Total acquired intangible assets Intangible Assets, Net (Excluding Goodwill) Commitments and Contingencies Disclosure [Abstract] Outstanding purchase orders Unrecorded Unconditional Purchase Obligation Revenue from Contract with Customer [Abstract] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Domain] Contract with Customer, Sales Channel [Domain] Direct customers Sales Channel, Directly to Consumer [Member] Distributors Sales Channel, Through Intermediary [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Net revenue Sales Revenue, Net [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Net revenue Revenue from Contract with Customer, Excluding Assessed Tax % of Total Concentration Risk, Percentage Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2014-09 Accounting Standards Update 2014-09 [Member] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Domain] Initial Application Period Cumulative Effect Transition [Domain] Difference between Revenue Guidance in Effect before and after Topic 606 Difference between Revenue Guidance in Effect before and after Topic 606 [Member] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Retained earnings Retained Earnings (Accumulated Deficit) Accounting Changes and Error Corrections [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Accounting Standards Update 2018-11 Accounting Standards Update 2018-11 [Member] Accounting Standards Update 2018-11 [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Lease related right-of-use asset Operating Lease, Right-of-Use Asset Lease liability Operating Lease, Liability Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Notes Senior Notes [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 2023 Notes Senior Notes Due 2023 [Member] Senior Notes Due 2023 [Member] 2028 Notes Senior Notes Due 2028 [Member] Senior Notes Due 2028 [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Aggregate principal amount Debt Instrument, Face Amount Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Redemption price percentage Debt Instrument, Redemption Price, Percentage Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Storage Storage Product Group [Member] Storage Product Group [Member] Networking Networking Product Group [Member] Networking Product Group [Member] Other Other Product Group [Member] Other Product Group [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] China CHINA Malaysia MALAYSIA Philippines PHILIPPINES United States THAILAND Thailand UNITED STATES Other Other Countries [Member] Other Countries [Member] Schedule of Finite-Lived Intangible Assets by Major Class Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Indefinite-Lived Intangible Assets Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Investments, Debt and Equity Securities [Abstract] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Due in one year or less Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Due between one and five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Due over five years Available for sale Securities, Debt Maturities, after Five Years, Amortized Cost Available for sale Securities, Debt Maturities, after Five Years, Amortized Cost Amortized Cost Available-for-sale Securities, Amortized Cost Basis Estimated Fair Value Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] Due in one year or less Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due between one and five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due over five years Available-for-sale Securities, Debt Maturities, after Five Years, Fair Value This item represents the fair value of debt securities which are expected to mature after five years from the balance sheet date which are categorized neither as held-to-maturity nor trading securities. Estimated Fair Value Available-for-sale Securities Fair Value Disclosures [Abstract] Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Business Combinations [Abstract] Business Combination Business Combination Disclosure [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Schedule of Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Schedule of Current Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Changes in Accumulated Other Comprehensive Income (Loss) by Components Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Statement of Financial Position [Abstract] Common shares, par value (in usd per share) Common Stock, Par or Stated Value Per Share Goodwill and Acquired Intangible Assets, Net Goodwill and Intangible Assets Disclosure [Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Machinery and equipment Machinery and Equipment [Member] Land, buildings, and leasehold improvements Land, Buildings and Improvements [Member] Computer software Software and Software Development Costs [Member] Furniture and fixtures Furniture and Fixtures [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property and equipment, gross Property, Plant and Equipment, Gross Less: Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Total property and equipment, net Property, Plant and Equipment, Net Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Anti-dilutive Potential Shares Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of accumulated other comprehensive income (loss) Reclassification out of Accumulated Other Comprehensive Income [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Cash flow hedges Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Research and development Research and Development Expense Selling, general and administrative Selling, General and Administrative Expense Operating costs and expenses Operating Costs and Expenses Numerator: Net Income (Loss) Attributable to Parent [Abstract] Income from continuing operations, net of tax Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Income from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Net income (loss) Net Income (Loss) Attributable to Parent Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted average shares — basic (in shares) Weighted Average Number of Shares Outstanding, Basic Effect of dilutive securities: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Share-based awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted average shares — diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Income from continuing operations per share: Income (Loss) from Continuing Operations, Per Share [Abstract] Income (Loss) from Continuing Operations, Per Share [Abstract] Basic (in usd per share) Income (Loss) from Continuing Operations, Per Basic Share Diluted (in usd per share) Income (Loss) from Continuing Operations, Per Diluted Share Income from discontinued operations per share: Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic and Diluted Share [Abstract] Basic (in usd per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share Diluted (in usd per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Net income per share: Earnings Per Share, Basic and Diluted [Abstract] Net income (loss) per share - Basic (in usd per share) Earnings Per Share, Basic Net income (loss) per share - Diluted (in usd per share) Earnings Per Share, Diluted Fair Value Measurements Fair Value Disclosures [Text Block] Fiscal Period Fiscal Period, Policy [Policy Text Block] Accounting Pronouncements Recently Adopted and Accounting Pronouncements Not Yet Effective New Accounting Pronouncements, Policy [Policy Text Block] Summary of Total Merger Consideration Schedule of Business Acquisitions, by Acquisition [Table Text Block] Purchase Price Allocation Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Supplemental Pro Forma Financial Information Business Acquisition, Pro Forma Information [Table Text Block] Restructuring and Related Activities [Abstract] Reconciliation of Beginning and Ending Restructuring Liability Balances by Major Type of Costs Restructuring and Related Costs [Table Text Block] Term Loan Term Loan [Member] Term Loan [Member] Line of Credit Line of Credit [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Extinguishment of Debt [Axis] Extinguishment of Debt [Axis] Extinguishment of Debt, Type [Domain] Extinguishment of Debt, Type [Domain] Bridge Loan Bridge Loan [Member] Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Amount of debt extinguished Extinguishment of Debt, Amount Interest expense Interest Expense, Debt Fiscal year Long-term Debt, Fiscal Year Maturity [Abstract] 2019 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2020 Long-term Debt, Maturities, Repayments of Principal in Year Two 2021 Long-term Debt, Maturities, Repayments of Principal in Year Three 2022 Long-term Debt, Maturities, Repayments of Principal in Year Four 2023 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Gross realized gains Debt Securities, Available-for-sale, Realized Gain Gross realized losses Debt Securities, Available-for-sale, Realized Loss Total net realized gains (losses) Debt Securities, Available-for-sale, Realized Gain (Loss) Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Cavium Cavium, Inc. [Member] Cavium, Inc. [Member] Payment of debt and interest Repayments Of Debt And Interest Repayments Of Debt And Interest Goodwill Goodwill Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] U.S. government and agency debt US Government Agencies Debt Securities [Member] Foreign government and agency debt Foreign Government Agencies Debt Securities [Member] Foreign Government Agencies Debt Securities [Member] Municipal debt securities Municipal Bonds [Member] Corporate debt securities Corporate Debt Securities [Member] Asset backed securities Asset-backed Securities [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Fair Value Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract] Less than 12 months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 12 months or more Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Total Debt Securities, Available-for-sale, Unrealized Loss Position Unrealized Loss Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Less than 12 months Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 12 months or more Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Restructuring and Other Related Charges Restructuring, Impairment, and Other Activities Disclosure [Text Block] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Intangibles acquired Finite-lived Intangible Assets Acquired Acquired intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Amortization expense of acquired intangible assets Amortization and Impairment of Intangible Assets Amortization and Impairment of Intangible Assets Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Income Statement [Abstract] Cost of goods sold Cost of Goods and Services Sold Gross profit Gross Profit Operating expenses: Costs and Expenses [Abstract] Restructuring related charges Restructuring Costs Total operating expenses Costs and Expenses Operating income (loss) from continuing operations Operating Income (Loss) Interest income Investment Income, Nonoperating Interest expense Interest Expense Other income (loss), net Other Nonoperating Income (Expense) Interest and other income (loss), net Nonoperating Income (Expense) And Interest Income (Expense) Nonoperating Income (Expense) And Interest Income (Expense) Provision (benefit) for income taxes Income Tax Expense (Benefit) Income (loss) from continuing operations, net of tax Income from discontinued operations, net of tax Net income (loss) per share - Basic: Earnings Per Share, Basic [Abstract] Continuing operations (in usd per share) Discontinued operations (in usd per share) Net income (loss) per share - Diluted: Earnings Per Share, Diluted [Abstract] Continuing operations (in usd per share) Discontinued operations (in usd per share) Weighted average shares: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Diluted (in shares) Cash dividends declared per share (in usd per share) Common Stock, Dividends, Per Share, Declared Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Money market funds Money Market Funds [Member] Time deposits Bank Time Deposits [Member] Notes Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets Assets, Fair Value Disclosure [Abstract] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Short-term Investments Investments, Fair Value Disclosure Other non-current assets Other Assets, Fair Value Disclosure Total assets Assets, Fair Value Disclosure Estimated aggregate fair value of debt Long-term Debt, Fair Value Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net income Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Share-based compensation Share-based Compensation Amortization of acquired intangible assets Amortization of Intangible Assets Amortization of inventory fair value adjustment associated with acquisition of Cavium Amortization Of Inventory Fair Value Adjustment Related With Acquisition Amortization Of Inventory Fair Value Adjustment Related With Acquisition Amortization of deferred debt issuance costs and debt discounts Amortization of Debt Issuance Costs and Discounts Restructuring related impairment charges (gain) Non Cash Restructuring And Related Charges (Income) Non-cash restructuring and other related charges (income) Gain from investments in privately-held companies Gain Loss On Investments In Privately Held Companies Gain Loss On Investments In Privately Held Companies Amortization of premium/discount on available-for-sale securities Accretion (Amortization) of Discounts and Premiums, Investments Other non-cash expense (income), net Other Noncash Income (Expense) Deferred income taxes Deferred Income Tax Expense (Benefit) Loss (gain) on sale of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Gain on sale of discontinued operations Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Loss (gain) on sale of business Gain (Loss) on Disposition of Business Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued liabilities and other non-current liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Accrued employee compensation Increase (Decrease) in Employee Related Liabilities Deferred income Increase (Decrease) in Contract with Customer, Liability Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Purchases of available-for-sale securities Payments to Acquire Debt Securities, Available-for-sale Sales of available-for-sale securities Proceeds from Sale of Debt Securities, Available-for-sale Maturities of available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Return of investment from privately-held companies Proceeds from Equity Method Investment, Distribution, Return of Capital Purchases of time deposits Payments to Acquire Time Deposits Payments to Acquire Time Deposits Maturities of time deposits Proceeds from Maturities of Time Deposits Proceeds from Maturities of Time Deposits Purchases of technology licenses Payments to Acquire Intangible Assets Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from sales of property and equipment Proceeds from Sale of Property, Plant, and Equipment Cash payment for acquisition of Cavium, net of cash and cash equivalents acquired Payments to Acquire Businesses, Net of Cash Acquired Net proceeds from sale of discontinued operations Cash Provided by (Used in) Investing Activities, Discontinued Operations Net proceeds (payments) from sale of business Proceeds From (Payments Of) Divestiture Of Businesses Proceeds From (Payments Of) Divestiture Of Businesses Other Payments for (Proceeds from) Other Investing Activities Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Repurchases of common stock Payments for Repurchase of Common Stock Proceeds from employee stock plans Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Excluding Stock Options Tax withholding paid on behalf of employees for net share settlement Payments Related to Tax Withholding for Share-based Compensation Dividend payments to shareholders Payments of Dividends Payments on technology license obligations Payment on Technology License Obligation Payment on Technology License Obligation Proceeds from issuance of debt Proceeds from Issuance of Long-term Debt Principal payments of debt Repayments of Long-term Debt Payment of equity and debt financing costs Payment of Financing and Stock Issuance Costs Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net decrease in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of period Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Unrealized Gain (Loss) on Marketable Securities Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Unrealized Gain (Loss) on Cash Flow Hedges Total AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Increase (Decrease) in AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning balance Stockholders' Equity Attributable to Parent Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Amounts reclassified from accumulated other comprehensive income (loss) Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Ending balance Line of Credit Facility [Table] Line of Credit Facility [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR London Interbank Offered Rate (LIBOR) [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Debt term Debt Instrument, Term Basis spread on variable rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Effective interest rate Line of Credit Facility, Interest Rate at Period End Payment of principal Write off of unamortized debt issuance costs Write off of Deferred Debt Issuance Cost Amount available for draw Line of Credit Facility, Remaining Borrowing Capacity Unused commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Leverage ratio Debt Instrument, Covenant, Leverage Ratio Debt Instrument, Covenant, Leverage Ratio Share-based awards Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Change in Contract with Customer, Asset and Liability [Abstract] Change in Contract with Customer, Asset and Liability [Abstract] Beginning balance Contract with Customer, Liability Estimates for additional shipments Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress Credit memos issued Contract With Customer, Liability, Credit Memos Issued Contract With Customer, Liability, Credit Memos Issued Ending balance Recent Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Accrued liabilities: Accrued Liabilities, Current [Abstract] Contract liabilities Contract with Customer, Liability, Current Technology license obligations Capital Lease Obligations, Current Accrued royalties Accrued Royalties, Current Accrued rebates Accrued Rebate, Current Carrying value as of the balance sheet date of obligations incurred through that date and payable for rebates. Accrued legal related expenses Accrued Professional Fees, Current Unsettled investment trades Unsettled Investment Trade Liabilities, Current Unsettled Investment Trade Liabilities, Current Restructuring liabilities Restructuring Reserve, Current Accrued interest Interest Payable, Current Accrued income tax payable Accrued Income Taxes, Current Other Other Accrued Liabilities, Current Total accrued liabilities Accrued And Contract Liabilities, Current Accrued And Contract Liabilities, Current Revenue Revenue from Contract with Customer [Text Block] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Severance and related costs Employee Severance [Member] Facilities and related costs Facility Closing [Member] Other exit-related costs Other Restructuring [Member] Operating Activities [Axis] Operating Activities [Axis] Operating Activities [Domain] Operating Activities [Domain] Continuing operations Continuing Operations [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Balance at beginning of period Restructuring Reserve Restructuring charges Restructuring Charges Net cash payments Payments for Restructuring Release of reserves Restructuring Reserve, Accrual Adjustment Exchange rate adjustment Restructuring Reserve, Foreign Currency Translation Gain (Loss) Balance at end of period Less: non-current portion Restructuring Reserve, Noncurrent Current portion Summary of Outstanding Debt Schedule of Debt [Table Text Block] Aggregate Future Contractual Maturities of Debt Schedule of Maturities of Long-term Debt [Table Text Block] Remainder of 2019 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Statement of Comprehensive Income [Abstract] Net income (loss) Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Net change in unrealized gain (loss) on marketable securities Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Net change in unrealized gain (loss) on cash flow hedges Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Portion Attributable to Parent Comprehensive income (loss), net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Line Items] Business Acquisition [Line Items] Cash consideration to Cavium common stockholders Payments to Acquire Businesses, Gross Common stock (153,376,408 shares of the Company's common stock at $21.34 per share) Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Cash consideration for intrinsic value of vested director stock options and employee accelerated awards attributable to pre-acquisition service Business Combination, Cash Consideration Transferred, Employee Accelerated Awards Business Combination, Cash Consideration Transferred, Employee Accelerated Awards Stock consideration for employee accelerated awards attributable to pre-acquisition service Business Combination, Consideration Transferred, Employee Accelerated Awards Business Combination, Consideration Transferred, Employee Accelerated Awards Fair value of the replacement equity awards attributable to pre-acquisition service Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value Total merger consideration Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination Number of shares issued in acquisition Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Acquisition share price (in usd per share) Business Acquisition, Share Price Basis of Presentation Business Description and Accounting Policies [Text Block] Authorized repurchase amount Stock Repurchase Program, Authorized Amount Remaining available for future share repurchases (in shares) Stock Repurchase Program, Remaining Authorized Repurchase Amount Number of common shares repurchased and retired during period (in shares) Stock Repurchased and Retired During Period, Shares Value of common shares repurchased and retired during period Stock Repurchased and Retired During Period, Value Total shares repurchased to date (in shares) Stock Repurchase Program, Repurchased Shares To Date Stock Repurchase Program, Repurchased Shares To Date Total amount of shares repurchased to date Stock Repurchase Program, Repurchased Amount To Date Stock Repurchase Program, Repurchased Amount To Date ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Short-term investments Short-term Investments Accounts receivable, net Accounts Receivable, Net, Current Inventories Inventory, Net Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Assets held for sale Discontinued Operation, Assets, Current Discontinued Operation, Assets, Current Total current assets Assets, Current Property and equipment, net Acquired intangible assets, net Other non-current assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued liabilities Accrued employee compensation Employee-related Liabilities, Current Deferred income Deferred Revenue, Current, Net Of Costs Deferred Revenue, Current, Net Of Costs Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Non-current income taxes payable Accrued Income Taxes, Noncurrent Deferred tax liabilities Deferred Income Tax Liabilities, Net Other non-current liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 11) Commitments and Contingencies Shareholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common shares, $0.002 par value Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders’ equity Total liabilities and shareholders’ equity Liabilities and Equity Total borrowings Long-term Debt, Gross Less: Unamortized debt discount and issuance cost Debt Issuance Costs, Net Net carrying amount of debt Long-term Debt Less: Current portion Long-term Debt, Current Maturities Non-current portion Derivative, notional amount Derivative, Notional Amount Hedge ineffectiveness from derivative financial instruments Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net Cash flow hedges were terminated as a result of forecasted transactions that did not occur Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net Adjustments Balances without adoption of new revenue standard Calculated under Revenue Guidance in Effect before Topic 606 [Member] Consolidated balance sheet: Assets Inventories Liabilities and shareholders' equity: Consolidated statement of operation: Net income (loss) per share - Basic (in usd per share) Net income (loss) per share - Diluted (in usd per share) Short-term, highly liquid investments Cash Equivalents, at Carrying Value Schedule of Gain (Loss) on Securities [Table] Schedule of Gain (Loss) on Securities [Table] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Total short-term investments Short-term Investments [Member] Gain (Loss) on Securities [Line Items] Gain (Loss) on Securities [Line Items] Available-for-sale: Debt Securities, Available-for-sale [Abstract] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Estimated Fair Value Debt Securities, Available-for-sale Held-to-maturity: Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract] Amortized Cost Debt Securities, Held-to-maturity Gross Unrealized Gains Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain Gross Unrealized Losses Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Estimated Fair Value Debt Securities, Held-to-maturity, Fair Value Amortized Cost Investments Gross Unrealized Gains Investments, Accumulated Gross Unrealized Gain Investments, Accumulated Gross Unrealized Gain Gross Unrealized Losses Investments, Accumulated Gross Unrealized Loss Investments, Accumulated Gross Unrealized Loss Estimated Fair Value Investments Investment Holdings [Text Block] Share-based compensation expense Allocated Share-based Compensation Expense Adjustment to inventories Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory Interest expense Acquisition related costs Business Combination, Acquisition Related Costs Pro forma net revenue Business Acquisition, Pro Forma Revenue Pro forma net income (loss) Business Acquisition, Pro Forma Net Income (Loss) Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Accounts receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Inventories Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory Prepaid expense and other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets Assets held for sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets Held For Sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Assets Held For Sale Property and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Other non-current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Accounts payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Accrued liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Liabilities Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Liabilities Accrued employee compensation Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Employee Compensation Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accrued Employee Compensation Deferred income Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue Current portion of long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt Liabilities held for sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities Held For Sale Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Liabilities Held For Sale Long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Non-current income taxes payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Income Taxes Payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Income Taxes Payable Deferred tax liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Other non-current liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Total merger consideration Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Measurement Period Adjustments Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustments [Abstract] Goodwill Goodwill, Purchase Accounting Adjustments Accrued liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Liabilities, Accrued Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Current Liabilities, Accrued Liabilities Non-current income taxes payable Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Income Taxes Payable Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Noncurrent Liabilities, Income Taxes Payable Deferred tax liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liabilities Asset write off costs Asset Impairment Charges [Member] Asset Impairment Charges [Member] Technology License Licensing Agreements [Member] Fixed Assets Fixed Assets [Member] Fixed Assets [Member] Accrued restructuring liability Income Tax Disclosure [Abstract] Income Tax Income Tax Disclosure [Text Block] Supplemental Financial Information Additional Financial Information Disclosure [Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Noncash consideration paid for the acquisition Noncash Or Part Noncash Acquisition, Noncash Consideration Paid Noncash Or Part Noncash Acquisition, Noncash Consideration Paid Debt Debt Disclosure [Text Block] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Selling, general and administrative Selling, General and Administrative Expenses [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Prepaid Expenses and Other Current Assets Prepaid Expenses and Other Current Assets [Member] Other Non-current Assets Other Noncurrent Assets [Member] Long-term Debt Long-term Debt [Member] Cash consideration (in usd per share) Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Cash Paid Per Acquiree Share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Cash Paid Per Acquiree Share Number of common shares per Cavium share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Debt financing costs Debt Issuance Costs, Gross Equity issuance costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Consolidated net revenue contributed by Cavium Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Net loss incurred in the period Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Restructuring costs Net Income Per Share Earnings Per Share [Text Block] Inventory, Current [Table] Inventory, Current [Table] Inventory [Line Items] Inventory [Line Items] Inventory turnover period Inventory Turnover Period Inventory Turnover Period Current income tax expense (benefit) Current Income Tax Expense (Benefit) Expense (benefit) related to other discrete items Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Unrecognized tax benefits, increase (decrease) Unrecognized Tax Benefits, Period Increase (Decrease) Gross unrecognized tax benefits Unrecognized Tax Benefits Increase in gross unrecognized tax benefits resulting from acquisition Unrecognized Tax Benefits, Increase Resulting from Acquisition Tax benefit if unrecognized tax benefit is realized subsequently Unrecognized Tax Benefits, Tax Benefit From Realization Of Unrecognized Tax Benefits In Period Unrecognized Tax Benefits, Tax Benefit From Realization Of Unrecognized Tax Benefits In Period Interest and penalties accrued on unrecognized tax benefits Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Uncertain tax positions, decrease from the lapse of statutes of limitation in various jurisdictions during next 12 months Decrease in Unrecognized Tax Benefits is Reasonably Possible Tax incentives, decrease in foreign taxes Income Tax Holiday, Aggregate Dollar Amount Tax incentives, effect on net income per share (less than) (in usd per share) Income Tax Holiday, Income Tax Benefits Per Share Undistributed earnings of foreign subsidiaries Undistributed Earnings of Foreign Subsidiaries Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Foreign Subsidiaries Foreign Subsidiaries [Member] Foreign Subsidiaries [Member] Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Cash, cash equivalents and short-term investments Cash, Cash Equivalents, and Short-term Investments Increase in tax expense in the event of undistributed earnings needed by parent company or no longer considered indefinitely reinvested outside of Bermuda Increase (Decrease) in Income Taxes Information about Gains (Losses) Associated with Derivative Financial Instruments Derivative Instruments, Gain (Loss) [Table Text Block] Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Summary of Effect of Adoption of New Revenue Standard Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Inventories: Inventory, Net [Abstract] Work-in-process Inventory, Work in Process, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Total inventories Inventory step-up adjustment Inventory Adjustments Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash flow hedges Cash Flow Hedging [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Forward contracts Foreign Exchange Forward [Member] Research and development Research and Development Expense [Member] Selling, general and administrative Selling and Marketing Expense [Member] Amount of Gains (Losses) in Statements of Operations Derivative, Gain (Loss) on Derivative, Net Summary of Investments Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Gross Realized Gains and Losses on Sales of Available-for-Sale Securities Realized Gain (Loss) on Investments [Table Text Block] Available-for-sale Securities Classified by Contractual Maturities Investments Classified by Contractual Maturity Date [Table Text Block] Unrealized Loss Position Investments Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity File Category Entity Filer Category Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding