Goodwill and Other Intangible Assets - Gross carrying amount, accumulated amortization and net book value of intangible assets other than goodwill (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Intangible asset balances by major asset class
Intangible assets, gross (excluding goodwill)	$ 171.2	$ 178.4
Finite-lived intangible assets, amortization amount	(38.7)	(38.8)
Intangible assets, book value	132.5	139.6
Indefinite-lived Intangible Assets
Intangible asset balances by major asset class
Intangible assets, gross (excluding goodwill)	109.2	114.7
Intangible assets, book value	109.2	114.7
Indefinite-lived Intangible Assets | Distribution Network
Intangible asset balances by major asset class
Indefinite-lived intangible assets, book value	17.9	18.8
Indefinite-lived Intangible Assets | Trademarks and Tradenames
Intangible asset balances by major asset class
Indefinite-lived intangible assets, book value	91.3	95.9
Finite-Lived Intangible Assets
Intangible asset balances by major asset class
Intangible assets, gross (excluding goodwill)	62.0	63.7
Finite-lived intangible assets, amortization amount	(38.7)	(38.8)
Intangible assets, book value	23.3	24.9
Finite-Lived Intangible Assets | Customer Relationships
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	26.7	27.0
Finite-lived intangible assets, amortization amount	(9.5)	(9.0)
Finite-lived intangible assets, book value	17.2	18.0
Finite-Lived Intangible Assets | Patents
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	28.3	29.7
Finite-lived intangible assets, amortization amount	(27.8)	(29.1)
Finite-lived intangible assets, book value	0.5	0.6
Finite-Lived Intangible Assets | Other Intangibles
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	0.6	0.6
Finite-lived intangible assets, amortization amount	(0.2)	(0.2)
Finite-lived intangible assets, book value	0.4	0.4
Finite-Lived Intangible Assets | Noncompetition Agreements
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	4.2	4.2
Finite-lived intangible assets, amortization amount	(0.8)	(0.4)
Finite-lived intangible assets, book value	3.4	3.8
Finite-Lived Intangible Assets | Trademarks and Tradenames
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	2.2	2.2
Finite-lived intangible assets, amortization amount	(0.4)	(0.1)
Finite-lived intangible assets, book value	$ 1.8	$ 2.1