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Long-term Financing and Sales of Receivables - Additional Information (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
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Receivables [Abstract] |  |  |
Interest income recognized on long-term receivables | $ 1,000,000 | $ 0 | $ 1,000,000
Commitments to provide long-term financing | 105,000,000 | 103,000,000 |
Servicing obligations for long-term receivables | $ 794,000,000 | $ 813,000,000 |

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- Definition Interest Income Recognized On Long Term Receivables + References No definition available. + Details
Name: | msi_InterestIncomeRecognizedOnLongTermReceivables
Namespace Prefix: | msi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- 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

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- 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