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Share-Based Compensation Plans - Schedule of Compensation Expense (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended
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Apr. 01, 2023 | Apr. 02, 2022
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation expense included in Operating earnings | $ 55 | $ 37
Tax benefit | (11) | (8)
Share-based compensation expense, net of tax | $ 44 | $ 29
Decrease in basic earnings per share (in USD per share) | $ (0.26) | $ (0.17)
Decrease in diluted earnings per share (in USD per share) | $ (0.25) | $ (0.17)
Costs of sales |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation expense included in Operating earnings | $ 10 | $ 6
Selling, general and administrative expenses |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation expense included in Operating earnings | 30 | 21
Research and development expenditures |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Share-based compensation expense included in Operating earnings | $ 15 | $ 10

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- Definition This element represents the increase (decrease) in basic earnings per share attributable to share-based compensation expense. + References No definition available. + Details
Name: | msi_ShareBasedCompensationExpenseImpactOnEarningsPerShareBasic
Namespace Prefix: | msi_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition This element represents the increase (decrease) in diluted earnings per share attributable to share-based compensation expense. + References No definition available. + Details
Name: | msi_ShareBasedCompensationExpenseImpactOnEarningsPerShareDiluted
Namespace Prefix: | msi_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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Period Type: | duration

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- Definition Amount, after tax, of expense for award under share-based payment arrangement. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Details
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- Details
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Data Type: | na
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Period Type: |

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- Details
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