Sales of Receivables - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Receivables [Abstract]
Servicing obligations for long-term receivables	$ 844	$ 891
Long-term financing	$ 97	$ 65

Represents the amount of sold long-term receivables for which the entity has retained servicing obligations.

No definition available.

Name:	msi_ServiceObligationForLongTermReceivables
Namespace Prefix:	msi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant