XML 68 R53.htm IDEA: XBRL DOCUMENT v3.22.2.2
Related Party Transactions (Details) - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Aug. 11, 2022
Mar. 10, 2022
Mar. 09, 2022
Related Party Transaction [Line Items]            
Post distribution of ownership, shares       14.8 78.1  
Cash distribution directly to related party $ 3.2 $ 20.4 $ 21.4      
Cash distribution on behalf of related party to third party $ 0.0 $ 4.2 $ 3.4      
Common Class B            
Related Party Transaction [Line Items]            
Voting power of common stock           67.00%
Post Holdings, Inc. | BellRing Brands, LLC unit            
Related Party Transaction [Line Items]            
Common units, outstanding   97.5 97.5   19.4 97.5
Noncontrolling interest, ownership percentage by noncontrolling owners   71.20% 71.20%     71.50%
Post Holdings, Inc. | BellRing Common Stock            
Related Party Transaction [Line Items]            
Noncontrolling interest, ownership percentage by noncontrolling owners 3.40%          
BellRing Common Stock Ownership Percentage         14.20%  
Accounts payable            
Related Party Transaction [Line Items]            
Accounts payable, trade, related parties $ 1.4 $ 2.2        
Tax receivable agreement, related parties 0.1 0.3        
Other liabilities            
Related Party Transaction [Line Items]            
Tax receivable agreement, related parties   10.2        
Separation costs | Selling, general and administrative expenses            
Related Party Transaction [Line Items]            
Expenses from transactions with related party 14.5 0.2 $ 1.9      
Master services agreement fees | Selling, general and administrative expenses            
Related Party Transaction [Line Items]            
Expenses from transactions with related party 4.6 2.2 2.2      
Share-based payment arrangement | Selling, general and administrative expenses            
Related Party Transaction [Line Items]            
Expenses from transactions with related party $ 1.0 $ 2.6 $ 3.9