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Segment Results (Schedule Of Goodwill By Segment) (Detail) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Segment Reporting Information [Line Items]      
Goodwill $ 1,589.8 $ 1,472.4 $ 1,403.7
Fluid Handling      
Segment Reporting Information [Line Items]      
Goodwill 352.4 240.9 240.8
Payment & Merchandising Technologies      
Segment Reporting Information [Line Items]      
Goodwill 863.7 857.8 789.2
Aerospace & Electronics      
Segment Reporting Information [Line Items]      
Goodwill 202.4 202.4 202.4
Engineered Materials      
Segment Reporting Information [Line Items]      
Goodwill $ 171.3 $ 171.3 $ 171.3