Document and Entity Information
Document and Entity Information | Sep. 26, 2024 |
Document And Entity Information [Line Items] | |
Document Type | 8-K |
Document Period End Date | Sep. 26, 2024 |
Entity Registrant Name | Amentum Holdings, Inc. |
Entity Incorporation State Country Code | DE |
Entity Address Address Line 1 | 4800 Westfields Blvd. |
Entity Address Address Line 2 | Suite #400 |
Entity Address City Or Town | Chantilly |
Entity Address State Or Province | VA |
Entity Address Postal Zip Code | 20151 |
Entity File Number | 001-42176 |
Entity Tax Identification Number | 99-0622272 |
City Area Code | 703 |
Local Phone Number | 579-0410 |
Entity Information Former Legal Or Registered Name | Amazon Holdco Inc. |
Written Communications | false |
Soliciting Material | false |
Pre Commencement Tender Offer | false |
Pre Commencement Issuer Tender Offer | false |
Security 12b Title | Common Stock, par value $0.01 per share |
Trading Symbol | AMTM |
Security Exchange Name | NYSE |
Entity Emerging Growth Company | false |
Current Fiscal Year End Date | --09-27 |
Amendment Flag | false |
Entity Central Index Key | 0002011286 |
Former Address [Member] | |
Document And Entity Information [Line Items] | |
Entity Address Address Line 1 | 600 William Northern Blvd |
Entity Address City Or Town | Tullahoma |
Entity Address State Or Province | TN |
Entity Address Postal Zip Code | 37388 |