Document and Entity Information
Document and Entity Information | Sep. 27, 2024 |
Cover [Abstract] | |
Document Type | 8-K |
Amendment Flag | false |
Document Period End Date | Sep. 27, 2024 |
Current Fiscal Year End Date | --09-27 |
Entity File Number | 001-42176 |
Entity Registrant Name | Amentum Holdings, Inc. |
Entity Central Index Key | 0002011286 |
Entity Incorporation, State or Country Code | DE |
Entity Tax Identification Number | 99-0622272 |
Entity Address, Address Line One | 4800 Westfields Blvd., Suite #400 |
Entity Address, City or Town | Chantilly |
Entity Address, State or Province | VA |
Entity Address, Postal Zip Code | 20151 |
City Area Code | 703 |
Local Phone Number | 579-0410 |
Title of 12(b) Security | Common Stock, $0.01 par value |
Trading Symbol | AMTM |
Security Exchange Name | NYSE |
Entity Emerging Growth Company | false |
Written Communications | false |
Soliciting Material | false |
Pre-commencement Tender Offer | false |
Pre-commencement Issuer Tender Offer | false |