Goodwill and Other Intangibles (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expense related to other intangible assets	$ 4.1	$ 4.2
Other Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expense related to other intangible assets	4.1	$ 4.2
Estimated future amortization expense for 2020	12.3
Estimated future amortization expense for 2021	14.1
Estimated future amortization expense for 2022	9.6
Estimated future amortization expense for 2023	9.3
Estimated future amortization expense for 2024	$ 9.2