v3.24.3
Derivative Financial Instruments (Details Textual) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Nov. 15, 2023
Apr. 28, 2023
Oct. 31, 2024
Oct. 31, 2023
Oct. 31, 2024
Oct. 31, 2023
Apr. 30, 2024
Apr. 30, 2020
Derivative Financial Instruments (Textual) [Abstract]                
Collateral pledged     $ 13.0   $ 13.0      
Collateral received             $ 1.9  
Cumulative net mark-to-market valuation of certain derivative positions recognized in unallocated derivative gains (losses)         4.3   22.6  
Interest expense – net     $ (98.7) $ (35.1) (199.1) $ (67.2)    
Post Holdings Inc. | Pet Food Brands [Member]                
Derivative Financial Instruments (Textual) [Abstract]                
Proceeds from divestitures - equity   5.4            
Proceeds from investment in equity securities $ 466.3              
Derivative, Gain (Loss) on Derivative, Net       $ 33.0 $ 33.6   5.4  
Commodity contracts                
Derivative Financial Instruments (Textual) [Abstract]                
Derivative instrument maturity     1 year   1 year      
Foreign currency exchange contracts                
Derivative Financial Instruments (Textual) [Abstract]                
Derivative instrument maturity     1 year   1 year      
Interest rate contracts                
Derivative Financial Instruments (Textual) [Abstract]                
Deferred pre-tax net gain (loss) included in accumulated other comprehensive loss               $ (239.8)
Deferred Gain (Loss) on Cash Flow Hedges Included in Accumulated Other Comprehensive Income or Loss     $ 180.3   $ 180.3   (187.1)  
Tax impact related to deferred losses and gains on cash flow hedges included in accumulated other comprehensive loss     $ 42.4   42.4   $ 44.0  
Effective portion of the hedge loss reclassified to interest expense over the next twelve months         $ (13.8)