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Sales of Receivables - Sales Receivables (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 29, 2024 | Jul. 01, 2023 | Jun. 29, 2024 | Jul. 01, 2023
Receivables [Abstract] |  |  |  |
Long-term receivables sales proceeds | $ 17 | $ 26 | $ 27 | $ 58

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- Definition Long Term Receivables Sales Proceeds + References No definition available. + Details
Name: | msi_LongTermReceivablesSalesProceeds
Namespace Prefix: | msi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_ReceivablesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration