Goodwill and Other Intangible Assets - Gross carrying amount and accumulated amortization of the company's intangible assets other than goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Intangible asset balances by major asset class
Intangible assets, gross (excluding goodwill)	$ 24.8
Intangible assets, gross (excluding goodwill)	178.4	$ 160.5
Finite-lived intangible assets, amortization amount	(38.8)	38.9
Intangible assets, book value	139.6	121.6
Indefinite-lived Intangible Assets
Intangible asset balances by major asset class
Intangible assets, gross (excluding goodwill)	114.7	119.6
Intangible assets, book value	114.7
Indefinite-lived Intangible Assets | Distribution Network
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	18.8	19.6
Intangible assets, gross (excluding goodwill)	18.8	19.6
Finite-Lived Intangible Assets
Intangible asset balances by major asset class
Intangible assets, gross (excluding goodwill)	63.7	40.9
Finite-lived intangible assets, amortization amount	(38.8)	38.9
Intangible assets, book value	24.9	2.0
Finite-Lived Intangible Assets | Customer Relationships
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	27.0	9.9
Intangible assets, gross (excluding goodwill)	18.0	1.3
Finite-lived intangible assets, amortization amount	(9.0)	(8.6)
Finite-Lived Intangible Assets | Patents
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	29.7	31.0
Intangible assets, gross (excluding goodwill)	0.6	0.7
Finite-lived intangible assets, amortization amount	(29.1)	(30.3)
Finite-Lived Intangible Assets | Noncompetition agreements
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	4.2
Intangible assets, gross (excluding goodwill)	3.8
Finite-lived intangible assets, amortization amount	(0.4)
Finite-Lived Intangible Assets | Other Intangibles
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	0.6
Intangible assets, gross (excluding goodwill)	0.4
Finite-lived intangible assets, amortization amount	(0.2)
Trademarks and Tradenames | Indefinite-lived Intangible Assets
Intangible asset balances by major asset class
Indefinite-lived intangible assets, book value	95.9	100.0
Finite-lived intangible assets, carrying amount		$ 100.0
Trademarks and Tradenames | Finite-Lived Intangible Assets
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	2.2
Intangible assets, gross (excluding goodwill)	2.1
Finite-lived intangible assets, amortization amount	$ (0.1)