Basis of Presentation	9 Months Ended
Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The condensed consolidated financial statements as of September 30, 2017 and for the three and nine months ended September 30, 2017 and October 1, 2016 include, in the opinion of management, all adjustments (consisting of normal recurring adjustments and reclassifications) necessary to present fairly the condensed consolidated balance sheets, statements of operations, statements of comprehensive income, statement of stockholders' equity, and statements of cash flows of Motorola Solutions, Inc. (“Motorola Solutions” or the “Company”) for all periods presented. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) have been condensed or omitted. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Form 10-K for the year ended December 31, 2016. The results of operations for the three and nine months ended September 30, 2017 are not necessarily indicative of the operating results to be expected for the full year. The preparation of financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. Recent Developments On July 28, 2017, the Company announced its intention to purchase Plant Holdings, Inc., the parent company of Airbus DS Communications. This acquisition will expand the Company's software portfolio in the Command Center with additional solutions for Next Generation 9-1-1. Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, "Revenue from Contracts with Customers." This new standard will replace the existing revenue recognition guidance in U.S. GAAP. The core principle of the ASU is the recognition of revenue for the transfer of goods and services equal to the amount an entity expects to receive for those goods and services. This ASU requires additional disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and estimates and changes in those estimates. In August 2015, the FASB issued ASU No. 2015-14, "Revenue from Contracts with Customers: Deferral of the Effective Date" that delayed the effective date of ASU No. 2014-09 by one year to January 1, 2018, as the Company’s annual reporting period begins after December 15, 2017. The Company has continued to analyze the impact of the new standard on its financial results based on an inventory of the Company's current contracts with customers. The Company has obtained an understanding of the new standard and currently believes that it will retain much of the same accounting treatment used to recognize revenue under current standards. Revenue on a significant portion of the Company's contracts is currently recognized under percentage of completion accounting applying a cost-to-cost method, including contracts for radio network deployments based on the ASTRO P25, TETRA, and LTE technologies, as well as certain offerings within its Smart Public Safety Solutions requiring significant integration (collectively "network integration contracts"). Under the new standard, the Company must identify the distinct promises to transfer goods and/or services within its contracts using certain factors. For network integration contracts, the Company has considered the factors used to determine whether promises made in the contract are distinct and determined that devices and accessories represent distinct goods. Accordingly, adoption of the new standard will impact the Company's network integration contracts that include devices and accessories, with the resulting impact being revenue recognized earlier as control of the devices and accessories transfers to the customer at a point in time rather than over time. For the remaining promised goods and services within the Company's network integration contracts, it will continue to recognize revenue on these contracts using a cost-to-cost method based on the continuous transfer of control to the customer over time. Transfer of control in the Company's contracts is demonstrated by creating a customized asset for customers, in conjunction with contract terms which provide the right to receive payment for goods and services. In addition, the standard may generally cause issuers to accelerate revenue recognition in contracts which were previously limited by software revenue recognition rules. While the Company has contracts which fall under these rules in the current standard, it has not historically deferred significant amounts of revenue under these rules as many arrangements are single-element software arrangements or sales of software with a tangible product which falls out of the scope of the current software rules. Based on the contracts currently in place, the Company does not anticipate a significant acceleration of revenue upon applying the new standard to its current contracts under these fact patterns. The new standard also requires the concept of transfer of control to determine whether an entity must present revenue from providing goods or services at the gross amount billed to a customer (as a principal) or at the net amount retained (as an agent). Therefore, an entity must assess whether it controls the goods or services provided to a customer before they are transferred. The new standard provides three indicators to assist entities in determining control. Under the current standard, eight indicators (including the three indicators under the new standard) exist to evaluate whether an entity should present revenue gross as a principal or net as an agent. Historically, the Company presented transactions that involved a third-party sales representative on a net basis. After considering the control concept and remaining three indicators under the new standard, the Company has determined that it is the principal in contracts that involve a third-party sales representative. Thus, upon adoption of the new standard the Company will present associated revenues on a gross basis, with the affect being an equal increase to selling, general and administrative expenses. Under current accounting standards, the Company expenses sales commissions as incurred. However, under ASU No. 2014-09, the Company will capitalize sales commissions as incremental costs to obtain a contract. Such costs will be classified as a contract asset and amortized over a period that approximates the timing of revenue recognition on the underlying contracts. The Company continues to evaluate the impact of ASU No. 2014-09 on its financial results and prepare for the adoption of the standard on January 1, 2018, including readying its internal processes and control environment for new requirements, particularly around enhanced disclosures, under the new standard. The standard allows for both retrospective and modified retrospective methods of adoption. The Company expects to adopt this standard under the modified retrospective method of adoption, which recognizes the cumulative effect of transition as an adjustment to retained earnings for contracts that are not completed as of the adoption date, without restating prior period financial statements. In February 2016, the FASB issued ASU No. 2016-02, "Leases," which amends existing guidance to require lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. The ASU is effective for the Company on January 1, 2019 and interim periods within that reporting period. The ASU prescribes the use of a modified retrospective method upon adoption, which requires all prior periods presented in the financial statements to be restated, with a cumulative adjustment to retained earnings as of the beginning of the earliest period presented. The Company is in the process of assessing the impact of this ASU on its consolidated financial statements and footnote disclosures. In August 2016, the FASB issued ASU No. 2016-15, “Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments,” which clarifies eight specific cash flow issues in an effort to reduce diversity in practice in how certain transactions are classified within the statement of cash flows. This ASU is effective for the Company on January 1, 2018 with early adoption permitted. The Company intends to adopt this ASU on January 1, 2018. Upon adoption, the ASU requires a retrospective application unless it is determined that it is impractical to do so, in which case it must be retrospectively applied at the earliest date practical. Upon adoption, the Company does not anticipate significant changes to the Company's existing accounting policies or presentation of the Statement of Cash Flows. In October 2016, the FASB issued ASU No. 2016-16, “Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory,” as part of the Board’s simplification initiative aimed at reducing complexity in accounting standards. This ASU eliminates the current application of deferring the income tax effect of intra-entity asset transfers, other than inventory, until the transferred asset is sold to a third party or otherwise recovered through use and will require entities to recognize tax expense when the transfer occurs. The guidance will be effective for the Company on January 1, 2018 and interim periods within that reporting period; early adoption permitted. The Company intends to adopt the ASU on January 1, 2018. The ASU requires a modified retrospective application with a cumulative-effect adjustment recorded in retained earnings as of the beginning of the period of adoption. The Company continues to assess the impact of this ASU but anticipates that the impact will be immaterial based on existing deferred taxes from intra-entity asset transfers other than inventory. In November 2016, the FASB issued ASU No. 2016-18, "Statement of Cash Flows (Topic 230): Restricted Cash," which requires that the statement of cash flows explain the change during the period in total cash, which is inclusive of cash and cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. Restricted cash and restricted cash equivalents will be included with cash and cash equivalents when reconciling the beginning of period and end of period balances on the statement of cash flows upon adoption of this standard. The ASU is effective for the Company on January 1, 2018 with early adoption permitted. The Company intends to adopt the ASU on January 1, 2018. Upon adoption, the ASU requires retrospective application. The Company does not anticipate significant changes to the Company's financial statements and related disclosures from adoption of the ASU. In March 2017, the FASB issued ASU No. 2017-07, "Compensation - Retirement Benefits (Topic 715) - Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." The amendments in this update require that an employer disaggregate the service cost component from the other components of net periodic cost (benefit) and report that component in the same line item as other compensation costs arising from services rendered by employees during the period. The other components of net periodic cost (benefit) are required to be presented in the statement of operations separately from the service cost component and outside of operating earnings. The amendment also allows for the service cost component of net periodic cost (benefit) to be eligible for capitalization when applicable. The guidance will be effective for the Company on January 1, 2018 and interim periods within that reporting period; early adoption is permitted. The guidance on the income statement presentation of the components of net periodic cost (benefit) must be applied retrospectively, while the guidance limiting the capitalization of net periodic cost (benefit) in assets to the service cost component must be applied prospectively. The Company intends to adopt this ASU on January 1, 2018. Upon adoption, the Company plans to update the presentation of net periodic cost (benefit) accordingly, noting all components of the Company's net periodic cost (benefit), with the exception of the service cost component, will be presented outside of operating earnings. The estimated impact of adoption of the ASU will be a reclassification of certain components of net periodic benefit from operating earnings to other income (expense) in the amount of approximately $15 million and $29 million for the years ended December 31, 2017 and December 31, 2016, respectively. In August 2017, the FASB issued ASU No. 2017-12 "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities," which is intended to simplify the application of hedge accounting and better portray the economic results of risk management strategies in the consolidated financial statements. The ASU expands and refines hedge accounting for both financial and non-financial risk components, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. The ASU is effective for the Company on January 1, 2019 with adoption permitted immediately in any interim or annual period (including the current period). The Company is currently assessing the impact of this ASU, including transition elections and required elections, on its consolidated financial statements and the timing of adoption.

Basis of Presentation

The condensed consolidated financial statements as of September 30, 2017 and for the three and nine months ended September 30, 2017 and October 1, 2016 include, in the opinion of management, all adjustments (consisting of normal recurring adjustments and reclassifications) necessary to present fairly the condensed consolidated balance sheets, statements of operations, statements of comprehensive income, statement of stockholders' equity, and statements of cash flows of Motorola Solutions, Inc. (“Motorola Solutions” or the “Company”) for all periods presented.

Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) have been condensed or omitted. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Form 10-K for the year ended December 31, 2016. The results of operations for the three and nine months ended September 30, 2017 are not necessarily indicative of the operating results to be expected for the full year.

The preparation of financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

Recent Developments

On July 28, 2017, the Company announced its intention to purchase Plant Holdings, Inc., the parent company of Airbus DS Communications. This acquisition will expand the Company's software portfolio in the Command Center with additional solutions for Next Generation 9-1-1.

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, "Revenue from Contracts with Customers." This new standard will replace the existing revenue recognition guidance in U.S. GAAP. The core principle of the ASU is the recognition of revenue for the transfer of goods and services equal to the amount an entity expects to receive for those goods and services. This ASU requires additional disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and estimates and changes in those estimates. In August 2015, the FASB issued ASU No. 2015-14, "Revenue from Contracts with Customers: Deferral of the Effective Date" that delayed the effective date of ASU No. 2014-09 by one year to January 1, 2018, as the Company’s annual reporting period begins after December 15, 2017.

The Company has continued to analyze the impact of the new standard on its financial results based on an inventory of the Company's current contracts with customers. The Company has obtained an understanding of the new standard and currently believes that it will retain much of the same accounting treatment used to recognize revenue under current standards. Revenue on a significant portion of the Company's contracts is currently recognized under percentage of completion accounting applying a cost-to-cost method, including contracts for radio network deployments based on the ASTRO P25, TETRA, and LTE technologies, as well as certain offerings within its Smart Public Safety Solutions requiring significant integration (collectively "network integration contracts").

Under the new standard, the Company must identify the distinct promises to transfer goods and/or services within its contracts using certain factors. For network integration contracts, the Company has considered the factors used to determine whether promises made in the contract are distinct and determined that devices and accessories represent distinct goods. Accordingly, adoption of the new standard will impact the Company's network integration contracts that include devices and accessories, with the resulting impact being revenue recognized earlier as control of the devices and accessories transfers to the customer at a point in time rather than over time. For the remaining promised goods and services within the Company's network integration contracts, it will continue to recognize revenue on these contracts using a cost-to-cost method based on the continuous transfer of control to the customer over time. Transfer of control in the Company's contracts is demonstrated by creating a customized asset for customers, in conjunction with contract terms which provide the right to receive payment for goods and services.

In addition, the standard may generally cause issuers to accelerate revenue recognition in contracts which were previously limited by software revenue recognition rules. While the Company has contracts which fall under these rules in the current standard, it has not historically deferred significant amounts of revenue under these rules as many arrangements are single-element software arrangements or sales of software with a tangible product which falls out of the scope of the current software rules. Based on the contracts currently in place, the Company does not anticipate a significant acceleration of revenue upon applying the new standard to its current contracts under these fact patterns.

The new standard also requires the concept of transfer of control to determine whether an entity must present revenue from providing goods or services at the gross amount billed to a customer (as a principal) or at the net amount retained (as an agent). Therefore, an entity must assess whether it controls the goods or services provided to a customer before they are transferred. The new standard provides three indicators to assist entities in determining control. Under the current standard, eight indicators (including the three indicators under the new standard) exist to evaluate whether an entity should present revenue gross as a principal or net as an agent. Historically, the Company presented transactions that involved a third-party sales representative on a net basis. After considering the control concept and remaining three indicators under the new standard, the Company has determined that it is the principal in contracts that involve a third-party sales representative. Thus, upon adoption of the new standard the Company will present associated revenues on a gross basis, with the affect being an equal increase to selling, general and administrative expenses.

Under current accounting standards, the Company expenses sales commissions as incurred. However, under ASU No. 2014-09, the Company will capitalize sales commissions as incremental costs to obtain a contract. Such costs will be classified as a contract asset and amortized over a period that approximates the timing of revenue recognition on the underlying contracts.

The Company continues to evaluate the impact of ASU No. 2014-09 on its financial results and prepare for the adoption of the standard on January 1, 2018, including readying its internal processes and control environment for new requirements, particularly around enhanced disclosures, under the new standard. The standard allows for both retrospective and modified retrospective methods of adoption. The Company expects to adopt this standard under the modified retrospective method of adoption, which recognizes the cumulative effect of transition as an adjustment to retained earnings for contracts that are not completed as of the adoption date, without restating prior period financial statements.

In February 2016, the FASB issued ASU No. 2016-02, "Leases," which amends existing guidance to require lessees to recognize assets and liabilities on the balance sheet for the rights and obligations created by long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. The ASU is effective for the Company on January 1, 2019 and interim periods within that reporting period. The ASU prescribes the use of a modified retrospective method upon adoption, which requires all prior periods presented in the financial statements to be restated, with a cumulative adjustment to retained earnings as of the beginning of the earliest period presented. The Company is in the process of assessing the impact of this ASU on its consolidated financial statements and footnote disclosures.

In August 2016, the FASB issued ASU No. 2016-15, “Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments,” which clarifies eight specific cash flow issues in an effort to reduce diversity in practice in how certain transactions are classified within the statement of cash flows. This ASU is effective for the Company on January 1, 2018 with early adoption permitted. The Company intends to adopt this ASU on January 1, 2018. Upon adoption, the ASU requires a retrospective application unless it is determined that it is impractical to do so, in which case it must be retrospectively applied at the earliest date practical. Upon adoption, the Company does not anticipate significant changes to the Company's existing accounting policies or presentation of the Statement of Cash Flows.

In October 2016, the FASB issued ASU No. 2016-16, “Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory,” as part of the Board’s simplification initiative aimed at reducing complexity in accounting standards. This ASU eliminates the current application of deferring the income tax effect of intra-entity asset transfers, other than inventory, until the transferred asset is sold to a third party or otherwise recovered through use and will require entities to recognize tax expense when the transfer occurs. The guidance will be effective for the Company on January 1, 2018 and interim periods within that reporting period; early adoption permitted. The Company intends to adopt the ASU on January 1, 2018. The ASU requires a modified retrospective application with a cumulative-effect adjustment recorded in retained earnings as of the beginning of the period of adoption. The Company continues to assess the impact of this ASU but anticipates that the impact will be immaterial based on existing deferred taxes from intra-entity asset transfers other than inventory.

In November 2016, the FASB issued ASU No. 2016-18, "Statement of Cash Flows (Topic 230): Restricted Cash," which requires that the statement of cash flows explain the change during the period in total cash, which is inclusive of cash and cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. Restricted cash and restricted cash equivalents will be included with cash and cash equivalents when reconciling the beginning of period and end of period balances on the statement of cash flows upon adoption of this standard. The ASU is effective for the Company on January 1, 2018 with early adoption permitted. The Company intends to adopt the ASU on January 1, 2018. Upon adoption, the ASU requires retrospective application. The Company does not anticipate significant changes to the Company's financial statements and related disclosures from adoption of the ASU.

In March 2017, the FASB issued ASU No. 2017-07, "Compensation - Retirement Benefits (Topic 715) - Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." The amendments in this update require that an employer disaggregate the service cost component from the other components of net periodic cost (benefit) and report that component in the same line item as other compensation costs arising from services rendered by employees during the period. The other components of net periodic cost (benefit) are required to be presented in the statement of operations separately from the service cost component and outside of operating earnings. The amendment also allows for the service cost component of net periodic cost (benefit) to be eligible for capitalization when applicable. The guidance will be effective for the Company on January 1, 2018 and interim periods within that reporting period; early adoption is permitted. The guidance on the income statement presentation of the components of net periodic cost (benefit) must be applied retrospectively, while the guidance limiting the capitalization of net periodic cost (benefit) in assets to the service cost component must be applied prospectively. The Company intends to adopt this ASU on January 1, 2018. Upon adoption, the Company plans to update the presentation of net periodic cost (benefit) accordingly, noting all components of the Company's net periodic cost (benefit), with the exception of the service cost component, will be presented outside of operating earnings. The estimated impact of adoption of the ASU will be a reclassification of certain components of net periodic benefit from operating earnings to other income (expense) in the amount of approximately $15 million and $29 million for the years ended December 31, 2017 and December 31, 2016, respectively.

In August 2017, the FASB issued ASU No. 2017-12 "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities," which is intended to simplify the application of hedge accounting and better portray the economic results of risk management strategies in the consolidated financial statements. The ASU expands and refines hedge accounting for both financial and non-financial risk components, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. The ASU is effective for the Company on January 1, 2019 with adoption permitted immediately in any interim or annual period (including the current period). The Company is currently assessing the impact of this ASU, including transition elections and required elections, on its consolidated financial statements and the timing of adoption.