Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets and Goodwill Intangible Assets (Details)

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Intangible Assets and Goodwill Intangible Assets (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Nov. 21, 2019
Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross $ 1,275,000,000.0 $ 600,100,000  
Finite-Lived Intangible Assets, Accumulated Amortization (289,200,000) (270,700,000)  
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 72,700,000    
Intangible Assets, Gross (Excluding Goodwill) 1,606,900,000 725,600,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Two 68,700,000    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 67,700,000    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 67.3    
Finite-Lived Intangible Assets, Amortization Expense, Year Five 67,100,000    
Trade names      
Intangible Assets [Line Items]      
Indefinite-lived Intangible Assets (Excluding Goodwill) $ 331,900,000 125,500,000  
Minimum      
Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 3 years    
Maximum      
Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 21 years    
Trade names      
Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross $ 200,000 200,000  
Finite-Lived Intangible Assets, Accumulated Amortization (200,000) (200,000)  
Customer relationships      
Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 1,026,300,000 464,200,000  
Finite-Lived Intangible Assets, Accumulated Amortization (179,400,000) (169,200,000)  
Technology, including patents      
Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 173,000,000.0 76,800,000  
Finite-Lived Intangible Assets, Accumulated Amortization (52,200,000) (49,400,000)  
Computer Software, Intangible Asset [Member]      
Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 65,400,000 58,700,000  
Finite-Lived Intangible Assets, Accumulated Amortization (53,100,000) (51,700,000)  
Backlog      
Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 10,000,000.0    
Finite-Lived Intangible Assets, Accumulated Amortization (4,200,000)    
Other Intangible Assets [Member]      
Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross 100,000 200,000  
Finite-Lived Intangible Assets, Accumulated Amortization $ (100,000) $ (200,000)  
Milacron      
Intangible Assets [Line Items]      
Identifiable intangible assets     $ 865,000,000.0