Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Trade receivables, Inventories and Property, plant, and equipment (Details)

v3.22.2.2
Summary of Significant Accounting Policies - Trade receivables, Inventories and Property, plant, and equipment (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Trade Receivables      
Reserve for trade receivables $ 23.1 $ 26.0  
Inventories      
Percentage of inventories determined by LIFO method 10.00%    
Difference in valuation if the FIFO method of inventory accounting had been used for all inventories $ 22.7 16.2  
Raw materials and components 216.8 153.1  
Work in process 116.7 104.0  
Finished goods 200.3 154.5  
Total inventories 533.8 411.6  
Properties      
Depreciation expense 51.2 56.1 $ 55.7
Cost 693.4 676.7  
Accumulated Depreciation $ (412.4) (381.6)  
Minimum      
Properties      
Finite-Lived Intangible Asset, Useful Life 3 years    
Maximum      
Properties      
Finite-Lived Intangible Asset, Useful Life 21 years    
Land and land improvements      
Properties      
Cost $ 26.7 26.2  
Accumulated Depreciation (4.3) (3.8)  
Buildings and building equipment      
Properties      
Cost 165.8 164.7  
Accumulated Depreciation $ (84.8) (79.1)  
Buildings and building equipment | Minimum      
Properties      
Estimated useful lives 3 years    
Buildings and building equipment | Maximum      
Properties      
Estimated useful lives 50 years    
Machinery and equipment      
Properties      
Cost $ 500.9 485.8  
Accumulated Depreciation $ (323.3) $ (298.7)  
Machinery and equipment | Minimum      
Properties      
Estimated useful lives 3 years    
Machinery and equipment | Maximum      
Properties      
Estimated useful lives 25 years