Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Goodwill (Details)

v3.22.2.2
Summary of Significant Accounting Policies - Goodwill (Details)
$ in Millions
3 Months Ended 12 Months Ended
Jul. 01, 2022
segment
Sep. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
segment
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2021
USD ($)
Changes in the carrying amount of goodwill              
Goodwill, Beginning Balance       $ 1,168.6 $ 1,137.8    
Acquisitions       74.9 19.6    
Foreign currency adjustments       (84.1) 11.2    
Goodwill, Ending Balance   $ 1,159.4   1,159.4 1,168.6 $ 1,137.8  
Goodwill and Intangible Asset Impairment [Abstract]              
Goodwill, impairment loss     $ 72.3        
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)           10.2  
Total     82.5 0.0 11.2 144.8  
TerraSource Global              
Goodwill and Intangible Asset Impairment [Abstract]              
Goodwill, impairment loss   16.9          
Total     73.0        
Trade Names              
Goodwill              
Trade names, indefinite lives   217.5   217.5 226.6    
Goodwill and Intangible Asset Impairment [Abstract]              
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)     8.6        
Technology, including patents              
Goodwill and Intangible Asset Impairment [Abstract]              
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)     1.6        
Advanced Process Solutions              
Changes in the carrying amount of goodwill              
Goodwill, Beginning Balance       484.9 485.1    
Acquisitions       74.9 0.0    
Foreign currency adjustments       (43.8) (0.2)    
Goodwill, Ending Balance   516.0   516.0 484.9 485.1  
Reporting Unit, Goodwill             $ 95.2
Goodwill and Intangible Asset Impairment [Abstract]              
Goodwill, impairment loss     72.3        
Total     $ 73.0        
Advanced Process Solutions | Trade Names              
Changes in the carrying amount of goodwill              
Number of Reporting Units | segment     1        
Reporting Unit, Indefinite-Lived Intangible Asset, Pre-Impairment Charge             4.4
Goodwill and Intangible Asset Impairment [Abstract]              
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)     $ 0.7        
Advanced Process Solutions | Technology, including patents              
Goodwill and Intangible Asset Impairment [Abstract]              
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)     0.0        
Molding Technology Solutions              
Changes in the carrying amount of goodwill              
Goodwill, Beginning Balance       675.4 644.4    
Acquisitions       0.0 19.6    
Foreign currency adjustments       (40.3) 11.4    
Goodwill, Ending Balance   $ 635.1   $ 635.1 $ 675.4 644.4  
Number of Reporting Units | segment 3            
Reporting Unit, Indefinite-Lived Intangible Asset, Pre-Impairment Charge             $ 125.0
Goodwill and Intangible Asset Impairment [Abstract]              
Goodwill, impairment loss     0.0        
Total     9.5        
Molding Technology Solutions | Trade Names              
Goodwill and Intangible Asset Impairment [Abstract]              
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)     7.9        
Molding Technology Solutions | Technology, including patents              
Goodwill and Intangible Asset Impairment [Abstract]              
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)     $ 1.6        
Molding Technology Solutions | Minimum              
Changes in the carrying amount of goodwill              
Reporting Unit, Approximate Percentage of Fair Value in Excess of Carrying Amount   13.00%   13.00% 9.00%    
Molding Technology Solutions | Maximum              
Changes in the carrying amount of goodwill              
Reporting Unit, Approximate Percentage of Fair Value in Excess of Carrying Amount   54.00%   54.00% 45.00%    
Batesville              
Changes in the carrying amount of goodwill              
Goodwill, Beginning Balance       $ 8.3 $ 8.3    
Acquisitions       0.0 0.0    
Foreign currency adjustments       0.0 0.0    
Goodwill, Ending Balance   $ 8.3   $ 8.3 $ 8.3 $ 8.3