Segment Results (Schedule Of Assets By Segment) (Detail) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 4,423.2	$ 4,615.0
Engineered Materials
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	225.9	217.3
Aerospace & Electronics
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	609.9	593.9
Process Flow Technologies
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	1,165.8	1,106.1
Payment & Merchandising Technologies
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	2,149.0	2,215.3
Corporate
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 272.6	$ 482.4