Sales of Receivables - Additional Information (Details) - USD ($) $ in Millions	Apr. 04, 2026	Dec. 31, 2025
Receivables [Abstract]
Servicing obligations for long-term receivables	$ 832	$ 814
Long-term financing	$ 200	$ 179

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