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

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