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Share-Based Compensation Plans - Schedule of Compensation Expense (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended
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Jul. 02, 2022 | Jul. 03, 2021 | Jul. 02, 2022 | Jul. 03, 2021
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Share-based compensation expense included in Operating earnings | $ 44 | $ 31 | $ 81 | $ 60
Tax benefit | (9) | (2) | (17) | (8)
Share-based compensation expense, net of tax | $ 35 | $ 29 | $ 64 | $ 52
Decrease in basic earnings per share (in USD per share) | $ (0.21) | $ (0.17) | $ (0.38) | $ (0.31)
Decrease in diluted earnings per share (in USD per share) | $ (0.21) | $ (0.17) | $ (0.37) | $ (0.30)
Costs of sales |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Share-based compensation expense included in Operating earnings | $ 7 | $ 4 | $ 13 | $ 8
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 | 25 | 19 | 46 | 36
Research and development expenditures |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Share-based compensation expense included in Operating earnings | $ 12 | $ 8 | $ 22 | $ 16

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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
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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
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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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- 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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- Details
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