Goodwill and Other Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 274.4	$ 276.0
Indefinite-lived other intangible asset	4.3	4.3
Total other intangible assets, gross carrying amount	278.7	280.3
Accumulated Amortization	158.4	156.4
Net Carrying Amount	116.0	119.6
Total other intangible assets, net carrying amount	120.3	123.9
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	177.0	177.9
Accumulated Amortization	91.4	90.0
Net Carrying Amount	85.6	87.9
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	76.8	77.4
Accumulated Amortization	58.6	58.1
Net Carrying Amount	18.2	19.3
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	19.3	19.4
Accumulated Amortization	7.4	7.4
Net Carrying Amount	11.9	12.0
Covenants not to compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1.3	1.3
Accumulated Amortization	1.0	0.9
Net Carrying Amount	$ 0.3	$ 0.4