| Document and Entity Information | Nov. 10, 2020 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0000814453 |
| Document Type | 8-K |
| Document Period End Date | Nov. 10, 2020 |
| Entity Registrant Name | NEWELL BRANDS INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-9608 |
| Entity Tax Identification Number | 36-3514169 |
| Entity Address, Address Line One | 6655 Peachtree Dunwoody Road |
| Entity Address, City or Town | Atlanta |
| Entity Address, State or Province | GA |
| Entity Address, Postal Zip Code | 30328 |
| City Area Code | (770) |
| Local Phone Number | 418-7000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common stock, $1 par value per share |
| Trading Symbol | NWL |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
