Goodwill and Other Intangibles (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Acquired Finite-Lived Intangible Assets [Line Items]
Other intangible assets amortization	$ 2.7	$ 4.3
Other Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Other intangible assets amortization	2.7	4.3
Estimated future amortization expense for 2022	7.1
Estimated future amortization expense for 2023	9.5
Estimated future amortization expense for 2024	9.3
Estimated future amortization expense for 2025	8.8
Estimated future amortization expense for 2026	8.4
Computer Software
Acquired Finite-Lived Intangible Assets [Line Items]
Other intangible assets amortization	$ 101.5	$ 94.0