| Document and Entity Information | May 11, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0000068505 |
| Document Type | 8-K |
| Document Period End Date | May 11, 2021 |
| Entity Registrant Name | Motorola Solutions, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-7221 |
| Entity Tax Identification Number | 36-1115800 |
| Entity Address, Address Line One | 500 W. Monroe Street |
| Entity Address, City or Town | Chicago |
| Entity Address, Postal Zip Code | 60661 |
| Entity Address, State or Province | IL |
| City Area Code | 847 |
| Local Phone Number | 576-5000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock $0.01 par value |
| Trading Symbol | MSI |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
