| Cover | Jan. 27, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jan. 27, 2021 |
| Entity Registrant Name | TEXTRON INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-5480 |
| Entity Tax Identification Number | 05-0315468 |
| Entity Address, Address Line One | 40 Westminster Street |
| Entity Address, City or Town | Providence |
| Entity Address, State or Province | RI |
| Entity Address, Postal Zip Code | 02903 |
| City Area Code | 401 |
| Local Phone Number | 421-2800 |
| Title of 12(b) Security | Common Stock – par value $0.125 |
| Trading Symbol | TXT |
| Security Exchange Name | NYSE |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000217346 |
| Amendment Flag | false |
