Goodwill and Other Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 274.0	$ 276.0
Indefinite-lived other intangible asset	4.2	4.3
Total other intangible assets, gross carrying amount	278.2	280.3
Accumulated Amortization	161.0	156.4
Net Carrying Amount	113.0	119.6
Total other intangible assets, net carrying amount	117.2	123.9
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	176.9	177.9
Accumulated Amortization	93.0	90.0
Net Carrying Amount	83.9	87.9
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	76.5	77.4
Accumulated Amortization	59.4	58.1
Net Carrying Amount	17.1	19.3
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19.3	19.4
Accumulated Amortization	7.5	7.4
Net Carrying Amount	11.8	12.0
Covenants not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1.3	1.3
Accumulated Amortization	1.1	0.9
Net Carrying Amount	$ 0.2	$ 0.4