v3.22.2.2
RETIREMENT PLANS - Plan Asset Allocations and Expected Future Benefit Payments (Details) - Defined Benefit Pension Plan - USD ($)
$ in Millions
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2019
International Plan        
Plan asset allocations:        
Expected company contributions in fiscal 2023   $ 1.1    
Expected future benefit payments:        
2023   5.6    
2024   5.8    
2025   6.1    
2026   6.2    
2027   6.2    
2028 – 2032   $ 33.8    
International Plan | Equity securities        
Plan asset allocations:        
Plan asset allocations   25.00% 22.00%  
International Plan | Equity securities | Scenario, Forecast        
Plan asset allocations:        
Plan asset allocations 25.00%      
International Plan | Debt securities        
Plan asset allocations:        
Plan asset allocations   44.00% 48.00%  
International Plan | Debt securities | Scenario, Forecast        
Plan asset allocations:        
Plan asset allocations 44.00%      
International Plan | Real estate securities        
Plan asset allocations:        
Plan asset allocations   0.00% 0.00%  
International Plan | Real estate securities | Scenario, Forecast        
Plan asset allocations:        
Plan asset allocations 0.00%      
International Plan | Cash and cash equivalents        
Plan asset allocations:        
Plan asset allocations   1.00% 0.00%  
International Plan | Cash and cash equivalents | Scenario, Forecast        
Plan asset allocations:        
Plan asset allocations 1.00%      
International Plan | Insurance contracts        
Plan asset allocations:        
Plan asset allocations   30.00%   30.00%
International Plan | Insurance contracts | Scenario, Forecast        
Plan asset allocations:        
Plan asset allocations 30.00%      
U.S. Plan        
Plan asset allocations:        
Expected company contributions in fiscal 2023   $ 0.2    
Expected future benefit payments:        
2023   7.4    
2024   7.2    
2025   7.0    
2026   6.9    
2027   6.8    
2028 – 2032   $ 30.5    
U.S. Plan | Equity securities        
Plan asset allocations:        
Plan asset allocations   17.00% 20.00%  
U.S. Plan | Equity securities | Scenario, Forecast        
Plan asset allocations:        
Plan asset allocations 22.00%      
U.S. Plan | Debt securities        
Plan asset allocations:        
Plan asset allocations   75.00% 73.00%  
U.S. Plan | Debt securities | Scenario, Forecast        
Plan asset allocations:        
Plan asset allocations 74.00%      
U.S. Plan | Real estate securities        
Plan asset allocations:        
Plan asset allocations   5.00% 4.00%  
U.S. Plan | Real estate securities | Scenario, Forecast        
Plan asset allocations:        
Plan asset allocations 4.00%      
U.S. Plan | Cash and cash equivalents        
Plan asset allocations:        
Plan asset allocations   3.00% 3.00%  
U.S. Plan | Cash and cash equivalents | Scenario, Forecast        
Plan asset allocations:        
Plan asset allocations 0.00%      
U.S. Plan | Insurance contracts        
Plan asset allocations:        
Plan asset allocations   0.00%   0.00%
U.S. Plan | Insurance contracts | Scenario, Forecast        
Plan asset allocations:        
Plan asset allocations 0.00%