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Sales of Receivables - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 02, 2022 | Jul. 03, 2021 | Jul. 02, 2022 | Jul. 03, 2021 | Dec. 31, 2021
Receivables [Abstract] |  |  |  |  |
Servicing obligations for long-term receivables | $ 875 |  | $ 875 |  | $ 940
Long-term financing | 102 |  | 102 |  | $ 56
Contract-specific discounting facility | $ 0 | $ 36 | $ 49 | $ 107 |

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 Receivable Discounting Facility Sales Proceeds + References No definition available. + Details
Name: | msi_ReceivableDiscountingFacilitySalesProceeds
Namespace Prefix: | msi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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