| Document and Entity Information | May 11, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 11, 2020 |
| Entity Registrant Name | AMNEAL PHARMACEUTICALS, INC. |
| Entity Central Index Key | 0001723128 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-38485 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 32-0546926 |
| Entity Address, Address Line One | 400 Crossing Blvd |
| Entity Address, City Or Town | Bridgewater |
| Entity Address, State Or Province | NJ |
| Entity Address, Postal Zip Code | 08807 |
| City Area Code | (908) |
| Local Phone Number | 947-3120 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Stock, par value $0.01 per share |
| Trading Symbol | AMRX |
| Security Exchange Name | NYSE |
