v3.26.1
Debt - Narrative (Details)
$ in Millions, € in Billions
3 Months Ended 12 Months Ended
Apr. 28, 2026
USD ($)
Apr. 15, 2026
USD ($)
Jan. 15, 2026
USD ($)
Mar. 03, 2025
USD ($)
Feb. 13, 2025
USD ($)
Apr. 26, 2022
USD ($)
Dec. 31, 2024
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
May 05, 2026
USD ($)
Nov. 12, 2025
EUR (€)
Mar. 17, 2025
USD ($)
Nov. 19, 2024
USD ($)
Debt Instrument [Line Items]                            
Debt issued                     $ 1,500 € 1.5    
Ratio of indebtedness to assets               0.150            
Financial covenant, maximum leverage ratio               3.9            
Weighted-average interest rate               3.98% 4.39%          
Reserves for Doubtful Accounts, Sales Returns, Discounts and Allowances                            
Debt Instrument [Line Items]                            
Foreign Currency Impact and Other               $ 11 $ 11 $ (1)        
Berry Global Group, Inc | Reserves for Doubtful Accounts, Sales Returns, Discounts and Allowances                            
Debt Instrument [Line Items]                            
Foreign Currency Impact and Other               12 10          
Collateral pledged | Land and building                            
Debt Instrument [Line Items]                            
Property pledged as collateral               38 51          
Credit facility                            
Debt Instrument [Line Items]                            
Amounts outstanding under credit facility               3,750 3,750          
Undrawn commitments under credit facility               $ 2,460 $ 2,050          
Facility fees on undrawn commitments               0.11%            
Term debt                            
Debt Instrument [Line Items]                            
Debt redemption price percentage               100.00%            
Guaranteed Senior Notes due 2026 | Senior Notes                            
Debt Instrument [Line Items]                            
Debt redemption price percentage 3.625% 4.875% 1.57%                      
Debt issued $ 600 $ 750 $ 1,525                      
Gain (Loss) on Extinguishment of Debt   $ 9                        
Bridge Facility | Senior unsecured term loans                            
Debt Instrument [Line Items]                            
Line of credit, maximum borrowing capacity         $ 2,200                 $ 3,000
Line of credit facility, commitment fee amount             $ 11              
Line of credit facility, decrease         $ 800                  
Unamortized commitment fee                         $ 8  
Revolving Credit Facility | 3 year syndicated facility | Credit facility                            
Debt Instrument [Line Items]                            
Term of credit facility       3 years   3 years                
Acquisition aggregate consideration threshold amount       $ 375                    
Revolving Credit Facility | 3 year syndicated facility | Credit facility | Minimum                            
Debt Instrument [Line Items]                            
Debt instrument, covenant, leverage ratio       390.00%                    
Revolving Credit Facility | 3 year syndicated facility | Credit facility | Maximum                            
Debt Instrument [Line Items]                            
Debt instrument, covenant, leverage ratio       425.00%                    
Revolving Credit Facility | 5 year syndicated facility | Credit facility                            
Debt Instrument [Line Items]                            
Line of credit, maximum borrowing capacity       $ 3,750                    
Term of credit facility       5 years   5 years                
Decrease in the commitments       $ 1,000                    
Revolving Credit Facility | Syndicated facility | Credit facility                            
Debt Instrument [Line Items]                            
Line of credit, maximum borrowing capacity           $ 3,750