Debt Disclosure [Abstract] Debt and Credit Facilities Debt Disclosure [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Billing Status, Type [Axis] Billing Status, Type [Axis] Receivables Billing Status [Domain] Receivables Billing Status [Domain] Unbilled Receivables Unbilled Revenues [Member] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Other Receivables Other Receivables [Member] Other Receivables [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Restatement Adjustment Restatement Adjustment [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Adjustments due to ASU 2014-09 Accounting Standards Update 2014-09 [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Avigilon and Plant Holdings Avigilon And Plant Holdings [Member] Avigilon And Plant Holdings [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Decrease in accounts receivable Accounts Receivable, Net, Current Contract assets Contract with Customer, Asset, Net, Current Receivables acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Retirement Benefits [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] U.S. UNITED STATES Non-U.S. Foreign Plan [Member] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Pension Benefit Plan Pension Plan [Member] Postretirement Health Care Benefits Plan Postretirement Health Coverage [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Service cost Defined Benefit Plan, Service Cost Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Amortization of: Defined Benefit Plan, Net Periodic Benefit Cost, Amortization [Abstract] Defined Benefit Plan, Net Periodic Benefit Cost, Amortization [Abstract] Unrecognized net loss Defined Benefit Plan, Amortization of Gain (Loss) Unrecognized prior service benefit Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Settlement loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement Net periodic pension cost (benefit) Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Credit Concentration Risk Credit Concentration Risk [Member] Derivative [Line Items] Derivative [Line Items] Net credit risk with all counterparties Credit Derivative, Maximum Exposure, Undiscounted Receivables [Abstract] Long-term receivables Long-term Receivable, Loans and Lease, Net Amount due from customers for trade receivables with payment terms greater than 12 months, long-term loans and lease receivables under sales-type leases, net of a valuation allowance. Less current portion Notes, Loans and Financing Receivable, Gross, Current Non-current long-term receivables Notes, Loans and Financing Receivable, Gross, Noncurrent Outstanding commitment to provide long-term financing to third parties Long-term Financing The amount of outstanding commitments to provide long-term financing to third parties. Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] 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] Calculated under Revenue Guidance in Effect before Topic 606 Calculated under Revenue Guidance in Effect before Topic 606 [Member] Accounting Standards Update 2014-09 Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Net sales Revenue from Contract with Customer, Excluding Assessed Tax Gross margin Gross Profit Selling, general and administrative expenses Selling, General and Administrative Expense Operating earnings Operating Income (Loss) Net earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net earnings attributable to Motorola Solutions, Inc. Net Income (Loss) Attributable to Parent Accounts receivable, net Other current assets Other Assets, Current Deferred income taxes Deferred Income Tax Assets, Net Other assets Other Assets, Noncurrent Contract liabilities Contract with Customer, Liability, Current Accrued liabilities Accrued Liabilities, Current Other liabilities Other Liabilities, Noncurrent Retained earnings Retained Earnings (Accumulated Deficit) Basic earnings (loss) per common share: Earnings Per Share, Basic [Abstract] Earnings Weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Basic earnings per share amount (in US$ per share) Earnings Per Share, Basic Diluted earnings per common share: Earnings Per Share, Diluted [Abstract] Add effect of dilutive securities: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Share-based awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Senior Convertible Notes (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Diluted weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Per share amount (in US$ per share) Earnings Per Share, Diluted Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock Options Employee Stock Option [Member] Performance Options Performance Options [Member] Performance Options [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Senior Convertible Notes Senior Convertible Notes [Member] Senior Convertible Notes [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Convertible Notes Convertible Debt [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Securities excluded from computation of dilutive shares due to antidilutive nature (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Debt instrument face amount Debt Instrument, Face Amount Interest rate Debt Instrument, Interest Rate, Stated Percentage Accounts receivable sales proceeds Accounts Receivable Sales Proceeds Accounts Receivable Sales Proceeds Long-term receivables sales proceeds Long Term Receivables Sales Proceeds Long Term Receivables Sales Proceeds Total proceeds from receivable sales Total Proceeds From One Time Sales Total Proceeds From One Time Sales Servicing obligations for long-term receivables Service Obligation for Long-term Receivables Represents the amount of sold long-term receivables for which the entity has retained servicing obligations. Number of net notional positions to buy or sell foreign currency disclosed (in number of positions) Largest Positions of Foreign Currency Derivatives Held This element represents the number of the largest net notional amounts of positions to buy or sell foreign currency which is disclosed in the footnotes. Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Foreign Exchange Contract Foreign Exchange Contract [Member] Currency [Axis] Currency [Axis] All Currencies [Domain] All Currencies [Domain] Euro Euro Member Countries, Euro British Pound United Kingdom, Pounds Chinese Renminbi China, Yuan Renminbi Australian Dollar Australia, Dollars Brazilian Real Brazil, Brazil Real Position [Axis] Position [Axis] Position [Domain] Position [Domain] Long Long [Member] Short Short [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Net Investment Hedging Net Investment Hedging [Member] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Derivative Contract Expiring June 2018 Derivative Contract Expiring June 2018 [Member] Derivative Contract Expiring June 2018 [Member] Notional amounts of outstanding foreign exchange contracts Derivative, Notional Amount Liabilities Derivative Liability, Fair Value, Gross Liability Fair Value Disclosures [Abstract] Fair Value, Assets Measured on Recurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring basis Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Estimate of Fair Value, Fair Value Disclosure Estimate of Fair Value Measurement [Member] Foreign exchange contracts Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Corporate bonds Corporate Debt Securities [Member] Common stock Common Stock [Member] 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: Fair Value Assets Measured On Recurring Basis Abstract Fair Value Assets Measured On Recurring Basis Abstract Foreign exchange derivative contracts Derivative Asset, Fair Value, Gross Asset Corporate bonds Debt Securities, Available-For-Sale Debt Securities, Available-For-Sale Common stock Equity Securities, FV-NI Equity Securities, FV-NI Available-for-sale securities: Available-for-sale Securities Liabilities: Fair Value Liabilities Measured On Recurring Basis Abstract Fair Value Liabilities Measured On Recurring Basis [Abstract] Foreign exchange derivative contracts Other Charges (Income) Other Charges [Table Text Block] Other Charges [Table Text Block] - Table Text block for the break-up of other charges charged to earnings. Other Income (Expense) Schedule of Other Nonoperating Income (Expense) [Table Text Block] Earnings Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Accounts Receivable, Net Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Inventories, Net Schedule of Inventory, Current [Table Text Block] Other Current Assets Schedule of Other Assets [Table Text Block] Property, Plant and Equipment, Net Property, Plant and Equipment [Table Text Block] Investments Cash Equivalents and Investments [Table Text Block] Cash Equivalents and Investments [Table Text Block] - Schedule of Cash equivalents and investments, including debt and equity securities accounted for under the equity or cost methods of accounting. Other Assets Schedule of Other Assets, Noncurrent [Table Text Block] Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Other Liabilities Schedule of Other Liabilities [Table Text Block] Schedule of Other Liabilities [Table Text Block] Changes in Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Other Current Assets [Abstract] Other Current Assets [Abstract] Costs and earnings in excess of billings (Note 1) Costs in Excess of Billings, Current Current contract cost assets (Note 2) Capitalized Contract Cost, Net, Current Capitalized Contract Cost, Net, Current Tax-related refunds receivable Value Added Tax Receivable Other Other Unspecified Current Assets This element represents other current assets other than specified in taxonomy. Other current assets Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Costs of sales Cost of Sales [Member] Selling, general and administrative expenses Selling General And Administrative Expense [Member] Selling, General and Administrative Expense [Member] Research and development expenditures Research and Development Expense [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Share-based compensation expense included in Operating earnings Allocated Share-based Compensation Expense Tax benefit Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Share-based compensation expense, net of tax Allocated Share-based Compensation Expense, Net of Tax Decrease in basic earnings per share (in US$ per share) Share Based Compensation Expense Impact On Earnings Per Share Basic This element represents the increase (decrease) in basic earnings per share attributable to share-based compensation expense. Decrease in diluted earnings per share (in US$ per share) Share Based Compensation Expense Impact on Earnings Per Share Diluted This element represents the increase (decrease) in diluted earnings per share attributable to share-based compensation expense. Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Line of Credit Line of Credit [Member] Loans Payable Loans Payable [Member] Senior Notes Senior Notes [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Letter of Credit Letter of Credit [Member] 2017 Revolving Credit Facility Revolving Credit Facility 2017 [Member] Revolving Credit Facility 2017 [Member] Term Loan Term Loan [Member] Term Loan [Member] 4.600% Senior Notes Due 2028 Four Point Six Percent Senior Notes Due Two Thousand Twenty Eight [Member] Four Point Six Percent Senior Notes Due Two Thousand Twenty Eight [Member] Avigilon Avigilon Corporation [Member] Avigilon Corporation [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Line of credit facility borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Net proceeds from line of credit Proceeds from Lines of Credit Repayments of lines of credit Repayments of Lines of Credit Outstanding loan amount Long-term Line of Credit Fronting commitment sub-limit Line of Credit Facility, Fronting Commitment Sub-Limit, Maximum Borrowing Capacity Line of Credit Facility, Fronting Commitment Sub-Limit, Maximum Borrowing Capacity Weighted average interest rate Debt, Weighted Average Interest Rate Additional borrowings available Debt Instrument, Additional Borrowings Available Debt Instrument, Additional Borrowings Available Long-term debt assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Repayments of assumed debt Repayments of Assumed Debt Proceeds from debt, net Proceeds from Debt, Net of Issuance Costs Defined benefit plan contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Conversion rate Debt Instrument, Convertible, Conversion Ratio Effective conversion price of convertible shares (in US$ per share) Debt Instrument, Convertible, Conversion Price Convertible debt, if-converted value in excess of principal Debt Instrument, Convertible, If-converted Value in Excess of Principal Income Statement [Abstract] Statement [Table] Statement [Table] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Products Product [Member] Services Service [Member] Service [Member] Statement [Line Items] Statement [Line Items] Costs of products sales Cost of Goods Sold Costs of services sales Cost of Services Costs of sales Cost of Revenue Gross margin Research and development expenditures Research and Development Expense Other charges Other Operating Income (Expense), Net Operating earnings Other income (expense): Nonoperating Income (Expense) [Abstract] Interest expense, net Interest Income (Expense), Nonoperating, Net Gains (losses) on sales of investments and businesses, net Gain (Loss) on Sales of Investments and Businesses, Net The net gain or loss from the sale of investments in debt and equity securities and businesses. Other Other Nonoperating Income (Expense) Total other expense Nonoperating Income (Expense) Net earnings before income taxes Income tax expense Income Tax Expense (Benefit) Net earnings Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Less: Earnings attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net earnings attributable to Motorola Solutions, Inc. Earnings per common share: Earnings Per Share [Abstract] Basic (in US$ per share) Diluted (in US$ per share) Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Diluted (in shares) Dividends declared per share (in US$ per share) Common Stock, Dividends, Per Share, Declared Document And Entity Information [Abstract] 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 Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Long-Term Customer Financing Proceeds Received From Non-Recourse Sales Of Accounts Receivable And Long-Term Receivables Schedule of Proceeds Received from Non Recourse Sales of Accounts and Long Term Receivable Text Block [Table Text Block] Schedule of Proceeds Received from Non Recourse Sales of Accounts and Long Term Receivable Text Block Financing Receivables Aging Analysis Past Due Financing Receivables [Table Text Block] Income Tax Disclosure [Abstract] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Not Designated As Hedging Instruments Not Designated as Hedging Instrument [Member] Other Comprehensive Income Location [Axis] Other Comprehensive Income Location [Axis] Other Comprehensive Income Location [Domain] Other Comprehensive Income Location [Domain] Other comprehensive income (loss) Other Comprehensive Income (Loss) [Member] Other income (expense) Other Income [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Gain (loss) on Derivative Instruments Gain (Loss) on Derivative Used in Net Investment Hedge, Net of Tax Gain (loss) on Derivative Instruments Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Goodwill and Intangible Assets Disclosure [Abstract] Fair Value of Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Amortized Intangible Assets, Excluding Goodwill, By Business Segment Schedule of Intangible Assets by Reporting Segment [Table Text Block] Disclosure of the gross carrying amount and accumulated amortization of intangible assets by reporting segment of the entity. Goodwill Schedule of Goodwill [Table Text Block] Investment Income [Table] Investment Income [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Corporate bonds Net Investment Income [Line Items] Net Investment Income [Line Items] Securities investments Investments, Fair Value Disclosure Investments, Fair Value Disclosure Securities investments Available-for-sale Securities, Debt Securities Strategic investments, at cost Equity Securities without Readily Determinable Fair Value, Amount Equity Securities without Readily Determinable Fair Value, Amount Strategic investments, at cost Cost Method Investments Company-owned life insurance policies Cash Surrender Value of Life Insurance Equity method investments Equity Method Investments Long-term investments Long-term Investments Loss on investments Other than Temporary Impairment Losses, Investments Excess cash withdrawal from life insurance investments Proceeds from Life Insurance Policy Unrealized gain on securities Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Market Stock Units (MSUs) Market Stock Units (MSUs) [Member] Market Stock Units (MSUs) [Member] Performance Options Performance Shares [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Units granted in period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Aggregate grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value Options granted in period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Aggregate grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Fair Value Vesting period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Foreign currency gain (loss) Foreign Currency Transaction Gain (Loss), before Tax Gain (loss) on derivative instruments Gain (Loss) on Derivative Instruments, Net, Pretax Loss on hedges Gain (Loss) on Hedging Activity Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Products and Systems Integration Product And Systems Integration Segment [Member] Product and Systems Integration Segment [Member] Services and Software Services And Software Segment [Member] Services And Software Segment [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Reorganization of business charges Restructuring, Settlement and Impairment Provisions Retirement and Other Employee Benefits Pension and Other Postretirement Benefits Disclosure [Text Block] Inventory, Net [Abstract] Inventory, Net [Abstract] Finished goods Inventory, Finished Goods, Gross Work-in-process and production materials Inventory, Work in Process and Raw Materials Inventories, gross Inventory, Gross Less inventory reserves Inventory Valuation Reserves Inventories, net Inventory, Net Income Taxes Income Tax Disclosure [Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash Total cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Inventories, net Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Investments Goodwill Goodwill Intangible assets, net Finite-Lived Intangible Assets, Net Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current portion of long-term debt Debt, Current Accounts payable Accounts Payable, Current Contract liabilities Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Stockholders’ Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, $100 par value Preferred Stock, Value, Issued Common stock, $.01 par value: Authorized shares: 600.0; Issued shares: 6/30/18—162.8; 12/31/17—161.6; 12/31/17—161.6; Outstanding shares: 6/30/18—162.3; 12/31/17—161.2 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 Motorola Solutions, Inc. stockholders’ equity (deficit) Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total stockholders’ equity (deficit) Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders’ equity Liabilities and Equity Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Other Liabilities [Abstract] Other Liabilities, Noncurrent [Abstract] Defined benefit plans Liability, Defined Benefit Pension Plan, Noncurrent Non-current contract liabilities (Note 2) Contract with Customer, Liability, Noncurrent Deferred revenue (Note 1) Deferred Revenue, Noncurrent Unrecognized tax benefits Unrecognized Tax Benefits Noncurrent The non-current portion of the gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date, excluding amounts pertaining to examined tax returns. Deferred income taxes Deferred Income Tax Liabilities, Net Other Other Unspecified Noncurrent Liabilities This element represents other noncurrent liabilities other than specified in the taxonomy. Other liabilities Fair Value Measurements Fair Value Disclosures [Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Provider of Two-Way Radio Communications Provider Of Two-Way Radio Communications [Member] Provider Of Two-Way Radio Communications [Member] Plant Holdings, Inc. Plant Holdings, Inc [Member] Plant Holdings, Inc [Member] Kodiak Networks Kodiak Networks [Member] Kodiak Networks [Member] Interexport Interexport [Member] Interexport 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] Customer-related Customer Relationships [Member] Completed technology Technology-Based Intangible Assets [Member] Trade Names Trade Names [Member] Other Intangible Assets Other Intangible Assets [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Cash paid for acquisition Payments to Acquire Businesses, Net of Cash Acquired Intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Useful life of intangibles Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Other net assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Net, Excluding Intangibles Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Net, Excluding Intangibles Consideration transferred Business Combination, Consideration Transferred Acquired liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Acquired debt Business Combination, Consideration Transferred, Liabilities Incurred Property, plant and equipment, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Other tangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Tangible Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Tangible Assets Schedule of New Accounting Pronouncements and Changes in Accounting Principles Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Schedule of Net Benefit Plan Costs Schedule of Defined Benefit Plans Disclosures [Table Text Block] Revenue from Contract with Customer [Abstract] Capitalized Contract Cost [Table] Capitalized Contract Cost [Table] Capitalized Contract Cost [Line Items] Capitalized Contract Cost [Line Items] Current contract cost assets Non-current contract cost assets Capitalized Contract Cost, Net, Noncurrent Capitalized Contract Cost, Net, Noncurrent Capitalized contract cost, amortization period Capitalized Contract Cost, Amortization Period Capitalized Contract Cost, Amortization Period Contract cost, amortization Capitalized Contract Cost, Amortization Other charges: Other Charges and Income [Abstract] Other Charges and Income [Abstract] Intangibles amortization (Note 14) Amortization of Intangible Assets Reorganization of business (Note 13) Other Restructuring Costs Building impairment Impairment of Long-Lived Assets Held-for-use Loss (Gain) on legal settlements Gain (Loss) Related to Litigation Settlement Gain on recovery of financial receivables Financing Receivable, Allowance for Credit Losses, Recovery Acquisition-related transaction fees Business Combination, Acquisition Related Costs Other charges Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Restructuring and Related Cost, by Type of Restructuring [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Exit costs Exit Costs [Member] Future minimum lease payments and termination of a contract associated with exit from or disposal of business activities or restructurings pursuant to a plan. Employee separation costs Employee Severance [Member] Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] January 1, 2018 Restructuring Reserve Additional Charges Restructuring Charges Adjustments Restructuring Reserve, Accrual Adjustment Amount Used Payments for Restructuring June 30, 2018 Statement of Cash Flows [Abstract] Operating Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Earnings attributable to noncontrolling interests Net earnings Adjustments to reconcile Net earnings to Net cash provided by (used for) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Non-cash other charges Other Non Cash Charges or (Income) The net amount of other expense (income) producing activities included in net income that result in no cash inflows or outflows in the period which are not otherwise defined in the taxonomy. Non-U.S. pension settlement loss Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment Share-based compensation expense Share-based Compensation Gains on sales of investments and businesses, net Changes in assets and liabilities, net of effects of acquisitions, dispositions, and foreign currency translation adjustments: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable, contract assets and contract liabilities Increase (Decrease) in Accounts Receivable, Contract Assets And Contract Liabilities Increase (Decrease) in Accounts Receivable, Contract Assets And Contract Liabilities Inventories Increase (Decrease) in Inventories Other current assets Increase (Decrease) in Other Operating Assets Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Deferred income taxes Deferred Income Tax Expense (Benefit) Net cash provided by (used for) operating activities Net Cash Provided by (Used in) Operating Activities Investing Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Acquisitions and investments, net Payments for Acquisitions and Investments, Net Cash used for acquiring businesses or investments in debt and equity securities. Proceeds from sales of investments and businesses, net Proceeds from Sales of Investments and Businesses, Net The net proceeds from the sale of investments in debt and equity securities and businesses. Capital expenditures Payments to Acquire Productive Assets Net cash used for investing activities Net Cash Provided by (Used in) Investing Activities Financing Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Repayment of debt Repayments of Long-term Debt Net proceeds from issuance of debt Proceeds from Issuance of Debt Proceeds from financing through capital leases Proceeds from Long-term Capital Lease Obligations Issuance of common stock Proceeds from Issuance of Common Stock Purchases of common stock Payments for Repurchase of Common Stock Payments of dividends Payments of Ordinary Dividends, Common Stock Payments of dividend to non-controlling interest Payments of Ordinary Dividends, Noncontrolling Interest Net cash provided by (used for) financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Net decrease in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Supplemental Cash Flow Information Supplemental Cash Flow Information [Abstract] Cash paid during the period for: Cash Paid During Period for [Abstract] Interest, net Interest Paid, Net Income and withholding taxes, net of refunds Income Taxes Paid, Net Segment Reporting [Abstract] Number of segments Number of Reportable Segments Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Net Sales Operating Earnings by Segment Segment Reporting Information, Operating Income (Loss) [Abstract] Total other expense Revenue from Contracts with Customers Revenue from Contract with Customer [Text Block] Other Assets [Abstract] Other Assets, Noncurrent [Abstract] Defined benefit plan assets Assets for Plan Benefits, Defined Benefit Plan Tax receivable Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax Non-current contract cost assets (Note 2) Other Other Unspecified Assets The aggregate carrying amount as of the balance sheet date of noncurrent assets not separately disclosed in the financial statements or notes thereto. Other assets, total Segment Information Segment Reporting Disclosure [Text Block] Investments in money market mutual funds classified as cash and cash equivalents Money Market Funds, at Carrying Value Fair value of long term debt Long-term Debt, Fair Value Risk Management Derivative Instruments and Hedging Activities Disclosure [Text Block] Preferred stock par value (in US$ per share) Preferred Stock, Par or Stated Value Per Share Common stock par value (in US$ per share) Common Stock, Par or Stated Value Per Share Common stock authorized (in shares) Common Stock, Shares Authorized Common stock issued (in shares) Common Stock, Shares, Issued Common stock outstanding (in shares) Common Stock, Shares, Outstanding Long-term Financing and Sales of Receivables Long-term Customer Financing and Sales of Receivables [Text Block] Provides the disclosures pertaining to (i) the amounts due from customers with payment terms greater than twelve months, long-term loans, and lease receivables under sales type leases, (ii) other financing activities with customers, and (iii) the sale of receivables. Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other assets Other Assets [Member] Other current assets Other Current Assets [Member] Other liabilities Other Liabilities [Member] Accrued liabilities Accrued Liabilities [Member] Fair Value Derivatives, Fair Value [Line Items] Assets Class of Treasury Stock [Table] Class of Treasury Stock [Table] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Stock repurchase program, authorized amount Stock Repurchase Program, Authorized Amount Payments for repurchased shares Number of shares repurchased (in shares) Stock Repurchased and Retired During Period, Shares Repurchase of common shares, average cost (in US$ per share) Treasury Stock Acquired, Average Cost Per Share Share repurchase authority utilized during period Stock Repurchased During Period, Value Amount available for future share repurchase Stock Repurchase Program, Remaining Authorized Repurchase Amount Cash dividends paid Schedule of Finite-Lived Intangible Assets by Major Class [Table] Schedule of Finite-Lived Intangible Assets [Table] Patents Patents [Member] Other intangibles Other Intangibles [Member] The value associated with other intangible assets. Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Intangible Assets And Goodwill Intangible Assets And Goodwil Disclosure Abstract Intangible Assets And Goodwil Disclosure [Abstract] Amortization expense on intangibles Finite-Lived Intangible Assets, Future Amortization Expense Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2018 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five 2023 Finite-Lived Intangible Assets, Amortization Expense, after Year Five Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Americas Americas [Member] EMEA EMEA [Member] AP Asia Pacific [Member] Devices Devices [Member] Devices [Member] Systems and Systems Integration Systems And Integration [Member] Systems And Integration [Member] Services Services [Member] Services [Member] Software Software [Member] Software [Member] 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 Sales Channel, Directly to Consumer [Member] Indirect Sales Channel, Through Intermediary [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Other Financial Data Additional Financial Information Disclosure [Text Block] Expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Interest income (expense), net: Interest Income (Expense), Net [Abstract] Interest expense Interest Expense Interest income Investment Income, Net Interest income (expense), net Other: Other Nonoperating Income (Expense) [Abstract] Net periodic postretirement benefit (Note 7) Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component And Settlement Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component And Settlement Non-U.S. pension settlement loss (Note 7) Foreign currency gain (loss) Gain (loss) on derivative instruments Gains on equity method investments Gain (Loss) On Managed Investment Fund Investments This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding investments in a managed investment fund. Other Other Miscellaneous Nonoperating Income (loss) Other Miscellaneous Nonoperating Income (loss) Total other income (expense) Intangible Assets and Goodwill Goodwill and Intangible Assets Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock and Additional Paid-in Capital Common Stock Including Additional Paid in Capital [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Retained Earnings Retained Earnings [Member] Noncontrolling Interests Noncontrolling Interest [Member] Accounting Standards Update 2016-16 Accounting Standards Update 2016-16 [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance (in shares) Shares, Issued Balance at beginning of period Net earnings Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Issuance of common stock and stock options exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Issuance of common stock and stock options exercised Stock Issued During Period, Value, Stock Options Exercised Share repurchase program (in shares) Share repurchase program Stock Repurchased and Retired During Period, Value Share-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Modified Retrospective Adoption Cumulative Effect of New Accounting Principle in Period of Adoption Dividends declared Dividends, Common Stock, Cash Balance (in shares) Balance at end of period Accounting Standards Update 2017-07 Accounting Standards Update 2017-07 [Member] Accounting Standards Update 2017-07 [Member] Other income (expense) Other Nonoperating Income (Expense) [Member] Cumulative effect of new accounting pronouncement Net periodic benefit excluding service cost Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Net Sales and Operating Earnings by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Income tax expense Effective tax rate Effective Income Tax Rate Reconciliation, Percent Federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Managed and Support Services Managed And Support Services [Member] Managed And Support Services [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, remaining performance obligation Revenue, Remaining Performance Obligation Property, Plant and Equipment, Net [Abstract] Property, Plant and Equipment, Net [Abstract] Land Land Building Buildings and Improvements, Gross Machinery and equipment Machinery and Equipment, Gross Property, plant and equipment, gross Property, Plant and Equipment, Gross Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, plant and equipment, net Depreciation expense Depreciation Contract with Customer, Asset and Liability [Abstract] Contract with Customer, Asset and Liability [Abstract] Receivables Contract assets Contract with Customer, Asset, Net Non-current contract liabilities Contract with customer, performance obligation satisfied in previous period Contract with Customer, Performance Obligation Satisfied in Previous Period Contract with customer, liability, revenue recognized Contract with Customer, Liability, Revenue Recognized Impairment losses Contract with Customer, Asset, Credit Loss Expense Schedule of Largest Net Notional Amounts of The Positions to Buy or Sell Foreign Currency Schedule of Derivative Instruments [Table Text Block] Summary of Fair Values and Location In Condensed Consolidated Balance Sheet Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Summary of Derivative Instruments and The Effect on the Condensed Consolidated Statements Of Operations Derivative Instruments, Gain (Loss) [Table Text Block] Accrued Liabilities [Abstract] Accrued Liabilities, Current [Abstract] Deferred revenue (Note 1) Deferred Revenue, Current Compensation Employee-related Liabilities, Current Billings in excess of costs and earnings (Note 1) Billings in Excess of Cost Tax liabilities Accrued Income Taxes, Current Deferred consideration on Airwave acquisition Business Combination, Contingent Consideration, Liability Dividend payable Dividends Payable Trade liabilities Accrued Trade Liabilities Accrued Trade Liabilities Other Other Accrued Liabilities, Current Accrued liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract] Accounts receivable, net Inventory Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Deferred income taxes Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax 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, Accrued Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Liabilities Deferred income tax liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Intangible assets Total consideration Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Foreign Currency Translation Adjustments: Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Available-for-Sale Securities: Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Defined Benefit Plans: Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Reclassification adjustment - Actuarial net losses into Other income (expense) Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Reclassification adjustment - Prior service benefits into Other income (expense) Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Reclassification adjustment - Non-U.S. pension settlement loss into Other income (expense) Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) of Settlement and Curtailments Attributable to Parent [Member] Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) of Settlement and Curtailments Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Other comprehensive income (loss) before reclassification adjustment Other Comprehensive Income (Loss), before Reclassifications, before Tax Tax expense Other Comprehensive Income (Loss) before Reclassifications, Tax Other comprehensive income before reclassification adjustment, net of tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Reclassification adjustment before tax Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Tax expense (benefit) Reclassification from AOCI, Current Period, Tax Reclassification adjustment, net Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Total other comprehensive income (loss), net of tax Total Accumulated other comprehensive loss Reorganization of Business Restructuring and Related Activities Disclosure [Text Block] Share-Based Compensation Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Other charges Other Expense [Member] Restructuring charges Restructuring reserve Payments for restructuring Restructuring charges in the period for total employee severance (in number of employees) Restructuring Charges Employees Restructuring Charges Employees Number of employees expected to be paid (in number of employees) Number Of Employees Expected To Be Paid Remaining Accruals Within One Year Number Of Employees Expected To Be Paid Remaining Accruals Within One Yea Fair Value of Company's Financial Assets And Liabilities Fair Value Assets And Liabilities Measured On Recurring Basis [Table Text Block] This element represents the disclosure related to assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Customer Relationships Developed Technology Cash payments Payments to Acquire Businesses, Gross Cash acquired Cash Acquired from Acquisition Transaction costs Business Acquisition, Transaction Costs Goodwill expected to be tax deductible Business Acquisition, Goodwill, Expected Tax Deductible Amount Contract Assets Contract Assets [Member] Contract Assets [Member] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Accumulated Amortization Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Goodwill Activity Goodwill [Roll Forward] Balance as of January 1, 2018 Goodwill acquired Goodwill, Acquired During Period Purchase accounting adjustments Goodwill, Purchase Accounting Adjustments Foreign currency Goodwill, Foreign Currency Translation Gain (Loss) Balance as of June 30, 2018 Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Financing Receivable, Recorded Investment, by Class of Financing Receivable [Axis] Class of Financing Receivable, Type [Axis] Financing Receivable, Recorded Investment, Class of Financing Receivable [Domain] Class of Financing Receivable, Type [Domain] Municipal leases secured tax exempt Municipal Leases Secured Tax Exempt [Member] Municipal Leases Secured Tax Exempt [Member] Commercial loans and leases secured Commercial Loans And Leases Secured [Member] Commercial Loans And Leases Secured [Member] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] Past Due Under 90 Days Financing Receivables, Less than than 90 Days Past Due [Member] Financing Receivables, Less than than 90 Days Past Due [Member] Past Due Over 90 Days Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] Total Long-term Receivable Financing Receivable, Gross Current Billed Due Financing Receivable, Recorded Investment, Current Past Due Financing Receivable, Recorded Investment, Past Due Gain on recovery of financial receivables Accounts receivable Accounts Receivable, Gross, Current Less allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Accounts receivable, net Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Revenue from Contracts with Customers Revenue from Contract With Customer [Policy Text Block] Revenue from Contract With Customer [Policy Text Block] Accrual for obligations of divestitures Loss Contingency Accrual Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Contract Balances Contract with Customer, Asset and Liability [Table Text Block] Contract Cost Balances Capitalized Contract Cost [Table Text Block] Restructuring and Related Activities Reportable Segment Restructuring and Related Activities Reportable Segment [Table Text Block] Disclosure of the net charges in restructuring reserves by business segment during the period. Reorganization of Businesses Accruals Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Schedule of Compensation Expense Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table Text Block] Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table Text Block] Statement of Comprehensive Income [Abstract] Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Marketable securities Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Defined benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income attributable to Motorola Solutions, Inc. common shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Interest agreements Interest Rate Swap [Member]