Goodwill and Other Intangibles (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Other Intangible Assets
Intangible Asset, Acquired, Finite-Lived [Line Items]
Other intangible assets	$ 58.4		$ 59.6
Computer Software
Intangible Asset, Acquired, Finite-Lived [Line Items]
Other intangible assets	2,303.7		$ 2,352.0
Other intangible assets amortization	$ 172.9	$ 162.9