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Sales of Receivables - Additional Information (Details) - USD ($) $ in Millions | Sep. 27, 2025 | Dec. 31, 2024
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Receivables [Abstract] |  |
Servicing obligations for long-term receivables | $ 856 | $ 794
Long-term financing | $ 218 | $ 105

X
- Definition The amount of outstanding commitments to provide long-term financing to third parties. + References No definition available. + Details
Name: | msi_LongTermFinancing
Namespace Prefix: | msi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the amount of sold long-term receivables for which the entity has retained servicing obligations. + References No definition available. + Details
Name: | msi_ServiceObligationForLongTermReceivables
Namespace Prefix: | msi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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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