Goodwill and Other Intangible Assets, Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Intangible Assets Subject to Amortization [Abstract]
Weighted average useful life	32 years
Gross carrying amount	$ 256.0	$ 253.8
Accumulated amortization	$ 60.2	50.8
Future Amortization Expense [Abstract]
Weighted average amortization period	32 years
Amortization expense	$ 9.3	9.1	$ 8.8
Estimated amortization expense, 2021	9.3
Estimated amortization expense, 2022	9.1
Estimated amortization expense, 2023	9.0
Estimated amortization expense, 2024	9.0
Estimated amortization expense, 2025	9.0
Estimated amortization expense, thereafter	$ 150.4
Trade Names [Member]
Intangible Assets Subject to Amortization [Abstract]
Weighted average useful life	35 years
Gross carrying amount	$ 203.9	203.9
Accumulated amortization	$ 38.6	32.5
Technology [Member]
Intangible Assets Subject to Amortization [Abstract]
Weighted average useful life	13 years
Gross carrying amount	$ 18.8	18.8
Accumulated amortization	$ 9.6	8.0
Patents and Trademarks [Member]
Intangible Assets Subject to Amortization [Abstract]
Weighted average useful life	19 years
Gross carrying amount	$ 6.4	6.4
Accumulated amortization	$ 6.1	5.9
Customer Relationships [Member]
Intangible Assets Subject to Amortization [Abstract]
Weighted average useful life	22 years
Gross carrying amount	$ 26.9	24.7
Accumulated amortization	$ 5.9	$ 4.4