Annual report pursuant to Section 13 and 15(d)

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

v3.19.3
Summary of Significant Accounting Policies - Trade receivables, Inventories and Property, plant, and equipment (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2017
Oct. 01, 2018
Trade Receivables        
Reserve for trade receivables $ (22.8) $ (22.2)    
Inventories        
Percentage of inventories determined by LIFO method 28.00% 30.00%    
Difference in valuation if the FIFO method of inventory accounting had been used for all inventories $ 17.3 $ 15.7    
Raw materials and components 72.3 68.3    
Work in process 44.0 44.7    
Finished goods 60.3 59.5    
Total inventories 176.6 172.5   $ 170.9
Properties        
Depreciation expense 23.2 23.4 $ 25.4  
Cost 449.3 445.8    
Accumulated Depreciation $ (309.0) (303.8)    
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 $ 15.0 15.0    
Accumulated Depreciation (3.4) (3.3)    
Buildings and building equipment        
Properties        
Cost 103.5 102.3    
Accumulated Depreciation $ (64.2) (60.7)    
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 $ 330.8 328.5    
Accumulated Depreciation $ (241.4) $ (239.8)    
Machinery and equipment | Minimum        
Properties        
Estimated useful lives 3 years      
Machinery and equipment | Maximum        
Properties        
Estimated useful lives 25 years