| Document and Entity Information Document | Feb. 12, 2020 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Feb. 12, 2020 |
| Entity Registrant Name | Trimble Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-14845 |
| Entity Tax Identification Number | 94-2802192 |
| Entity Address, Address Line One | 935 Stewart Drive |
| Entity Address, City or Town | Sunnyvale |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94085 |
| City Area Code | 408 |
| Local Phone Number | 481-8000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.001 par value per share |
| Trading Symbol | TRMB |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000864749 |
| Amendment Flag | false |
