Goodwill and Other Intangible Assets - Gross carrying amount, accumulated amortization and net book value of intangible assets other than goodwill (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Intangible asset balances by major asset class
Intangible assets, gross (excluding goodwill)	$ 170.1	$ 169.7
Finite-lived intangible assets, amortization amount	(46.3)	(44.1)
Intangible assets, book value	123.8	125.6
Indefinite-lived Intangible Assets
Intangible asset balances by major asset class
Intangible assets, gross (excluding goodwill)	107.4	106.9
Finite-lived intangible assets, amortization amount	0.0	0.0
Intangible assets, book value	107.4	106.9
Indefinite-lived Intangible Assets | Distribution Network
Intangible asset balances by major asset class
Indefinite-lived intangible assets, book value	14.4	14.3
Finite-lived intangible assets, amortization amount	0.0	0.0
Indefinite-lived Intangible Assets | Trademarks and Tradenames
Intangible asset balances by major asset class
Indefinite-lived intangible assets, book value	93.0	92.6
Finite-lived intangible assets, amortization amount	0.0	0.0
Finite-Lived Intangible Assets
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	62.7	62.8
Finite-lived intangible assets, amortization amount	(46.3)	(44.1)
Finite-lived intangible assets, book value	16.4	18.7
Finite-Lived Intangible Assets | Customer Relationships
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	26.4	26.5
Finite-lived intangible assets, amortization amount	(12.7)	(11.6)
Finite-lived intangible assets, book value	13.7	14.9
Finite-Lived Intangible Assets | Patents
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	29.3	29.2
Finite-lived intangible assets, amortization amount	(29.0)	(28.8)
Finite-lived intangible assets, book value	0.3	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	(2.6)	(2.0)
Finite-lived intangible assets, book value	1.6	2.2
Finite-Lived Intangible Assets | Other Intangibles
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	0.6	0.7
Finite-lived intangible assets, amortization amount	(0.6)	(0.7)
Finite-lived intangible assets, book value	0.0	0.0
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	(1.4)	(1.0)
Finite-lived intangible assets, book value	$ 0.8	$ 1.2