| Document and Entity Information | Oct. 23, 2023 |
| Cover [Abstract] | |
| Entity Registrant Name | SEALED AIR CORP/DE |
| Amendment Flag | false |
| Entity Central Index Key | 0001012100 |
| Document Type | 8-K |
| Document Period End Date | Oct. 23, 2023 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-12139 |
| Entity Tax Identification Number | 65-0654331 |
| Entity Address, Address Line One | 2415 Cascade Pointe Boulevard |
| Entity Address, City or Town | Charlotte |
| Entity Address, State or Province | NC |
| Entity Address, Postal Zip Code | 28208 |
| City Area Code | (980) |
| Local Phone Number | 221-3235 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, par value $0.10 per share |
| Trading Symbol | SEE |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
