Subsequent Events (Details) (Enterprise, Zebra Technologies Corporation [Member], Subsequent Event [Member], USD $) In Billions, unless otherwise specified	0 Months Ended
Apr. 14, 2014
Enterprise \| Zebra Technologies Corporation [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Disposal Group, Expected Proceeds from Disposal of Business Segment	$ 3.45

Disposal Group, Including Discontinued Operation, Consideration

No definition available.

Name:	msi_DisposalGroupIncludingDiscontinuedOperationConsideration
Namespace Prefix:	msi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration