Goodwill And Intangible Assets (Changes To Goodwill) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Intangible Assets, Net (Excluding Goodwill)	$ 503.0	$ 520.3	$ 505.1
Intangibles with indefinite useful lives	71.0	$ 70.9
Balance at beginning of period	1,609.0
Goodwill, Foreign Currency Translation Gain (Loss)	(13.8)
Balance at end of period	1,595.1
Fluid Handling
Goodwill [Line Items]
Balance at beginning of period	360.0
Goodwill, Purchase Accounting Adjustments	(0.1)
Goodwill, Foreign Currency Translation Gain (Loss)	(4.9)
Balance at end of period	355.0
Payment & Merchandising Technologies
Goodwill [Line Items]
Balance at beginning of period	875.2
Goodwill, Foreign Currency Translation Gain (Loss)	(8.9)
Balance at end of period	866.3
Aerospace & Electronics
Goodwill [Line Items]
Balance at beginning of period	202.5
Balance at end of period	202.5
Engineered Materials
Goodwill [Line Items]
Balance at beginning of period	171.3
Balance at end of period	$ 171.3