Segment Information (Schedule Of Trade Sales and Tangible Long-Lived Assets, By Geographical Areas) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Trade sales	$ 4,055.1	$ 4,383.6	$ 4,725.3
Tangible long-lived assets	664.0	724.4	781.2
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Trade sales	616.9	660.6	715.2
Tangible long-lived assets	140.1	144.9	149.4
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Trade sales	409.5	443.5	464.7
Tangible long-lived assets	45.1	44.3	47.1
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Trade sales	289.6	289.5	296.6
Tangible long-lived assets	21.9	23.1	25.6
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Trade sales	187.1	214.0	232.6
Tangible long-lived assets	12.6	11.6	14.3
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Trade sales	140.4	143.4	139.2
Tangible long-lived assets	8.9	6.8	7.3
Total foreign sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Trade sales	1,643.5	1,751.0	1,848.3
Tangible long-lived assets	228.6	230.7	243.7
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Trade sales	2,411.6	2,632.6	2,877.0
Tangible long-lived assets	$ 435.4	$ 493.7	$ 537.5