Goodwill and Identifiable Intangibles (Gross Carrying Amount and Accumulated Amortization) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Amortizable intangible assets:
Amortizable intangible assets, gross	$ 551.7	$ 444.1
Amortizable intangible assets, accumulated amortization	(191.9)	(159.2)
Amortizable intangible assets, net book value	359.8	284.9
Total identifiable intangible assets, gross	1,023.4	1,043.6
Total identifiable intangibles, accumulated amortization	(236.4)	(203.7)
Total identifiable intangibles, net book value	787.0	839.9
Trade names
Amortizable intangible assets:
Amortizable intangible assets, gross	306.0	195.3
Amortizable intangible assets, accumulated amortization	(70.5)	(59.4)
Amortizable intangible assets, net book value	235.5	135.9
Customer relationships
Amortizable intangible assets:
Amortizable intangible assets, gross	240.2	243.0
Amortizable intangible assets, accumulated amortization	(120.5)	(99.3)
Amortizable intangible assets, net book value	119.7	143.7
Patents
Amortizable intangible assets:
Amortizable intangible assets, gross	5.5	5.8
Amortizable intangible assets, accumulated amortization	(0.9)	(0.5)
Amortizable intangible assets, net book value	4.6	5.3
Trade names
Indefinite-lived intangible assets:
Indefinite-lived intangible assets, gross	471.7	599.5
Indefinite-lived intangible assets, accumulated amortization	(44.5)	(44.5)
Indefinite-lived intangible assets, net book value	$ 427.2	$ 555.0