Goodwill and Other Intangible Assets - Gross carrying amount and accumulated amortization of the company's intangible assets other than goodwill (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Intangible asset balances by major asset class
Finite-lived Intangible assets, amortization amount	$ (46.2)	$ (43.3)
Intangible assets, gross (excluding goodwill)	165.1	162.6
Intangible assets, book value	118.9	119.3
Trademarks and tradenames
Intangible asset balances by major asset class
Indefinite-lived intangible assets, book value	95.8	94.2
Distribution network
Intangible asset balances by major asset class
Indefinite-lived intangible assets, book value	18.7	18.4
Customer relationships
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	10.4	10.4
Finite-lived Intangible assets, amortization amount	(7.7)	(7.1)
Finite-lived intangible assets, book value	2.7	3.3
Patents
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	29.6	29.1
Finite-lived Intangible assets, amortization amount	(28.1)	(26.6)
Finite-lived intangible assets, book value	1.5	2.5
Engineering drawings
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	10.3	10.2
Finite-lived Intangible assets, amortization amount	(10.1)	(9.3)
Finite-lived intangible assets, book value	0.2	0.9
Other intangibles
Intangible asset balances by major asset class
Finite-lived intangible assets, carrying amount	0.3	0.3
Finite-lived Intangible assets, amortization amount	(0.3)	(0.3)
Finite-lived intangible assets, book value	$ 0.0	$ 0.0