Segment Results (Schedule Of Assets By Segment) (Detail) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 4,474.5	$ 4,615.0
Engineered Materials
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		217.3
Aerospace & Electronics
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	618.5	593.9
Process Flow Technologies
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	1,178.2	1,106.1
Payment & Merchandising Technologies
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	2,154.0	2,215.3
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 296.8	$ 482.4