| Document and Entity Information | Sep. 13, 2019 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | On July 2, 2019, Berry Global Group, Inc. (the “Company”) filed a current report on Form 8-K to report that it had completed the acquisition of all of the outstanding equity of RPC Group Plc (“RPC”). In such Form 8-K, the Company stated that it would file the financial statements of RPC and pro forma financial information required by Items 9.01(a) and (b) of Form 8-K, respectively, by amendment as permitted by such Items. The Company is filing this Amendment No. 1 to provide such financial statements and pro forma financial information. |
| Document Period End Date | Sep. 13, 2019 |
| Entity Registrant Name | BERRY GLOBAL GROUP, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-35672 |
| Entity Tax Identification Number | 20-5234618 |
| Entity Address, Address Line One | 101 Oakley Street |
| Entity Address, City or Town | Evansville |
| Entity Address, State or Province | IN |
| Entity Address, Postal Zip Code | 47710 |
| City Area Code | 812 |
| Local Phone Number | 424-2904 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001378992 |
| Title of 12(b) Security | Common Stock, $0.01 par value per share |
| Trading Symbol | BERY |
| Security Exchange Name | NYSE |
