Leases (Summary of Supplemental Cash Flow Information Related to Leases) (Parenthetical) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Increase of ROU asset upon modification		$ 1.1	$ 8.6
ROU assets		4.7	0.6	$ 1.0
Operating leases	[1]	19.0	15.8	3.9
Finance leases	[2]	13.6	12.3	$ 0.0
Decrease of ROU asset upon modification			1.0
3form and Zahner [Member]
Operating leases		13.0
Zahner [Member]
Finance leases		$ 8.9
Right-of-use Asset [Member]
ROU assets			$ 3.7
Modified expected lease term			13 years

[1] During 2024, increases in ROU assets included $13.0 million from the acquisitions of 3form and Zahner and a $4.7 million increase from modifications that did not involve obtaining a new ROU asset. During 2023, increases in ROU assets included a decrease of $1.0 million due to a change in lease classification upon modification and an increase of $0.6 million resulting from modifications that did not involve obtaining a new ROU asset. During 2022, increases in ROU assets included $1.0 million resulting from modifications that did not involve obtaining a new ROU asset. Modifications for all years presented resulted primarily from changes in the terms of existing leases.

[2] During 2024, increases in ROU assets included $8.9 million from the acquisition of Zahner and a $1.1 million decrease from modifications that did not involve obtaining a new ROU asset. During 2023, increases in ROU assets included $8.6 million due to a change in lease classification upon modification for an existing manufacturing facility within our Architectural Specialties segment that had a modified expected lease term of 13 years, in addition to an increase of $3.7 million for a lease modification that did not involve obtaining a new ROU asset.