Goodwill and Other Intangible Assets (Components of Other Intangible Assets) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Intangible Assets Goodwill And Other Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	$ 1,255.2	$ 1,315.3
Accumulated Amortization, amortizable intangible assets	(726.2)	(743.1)
Net Book Value, amortizable intangible assets	529.0	572.2
Total other intangible assets	1,273.3	1,333.4
Net Book Value	547.1	590.3
Indefinite-lived trade names	18.1	18.1
Customer relationships [Member]
Intangible Assets Goodwill And Other Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	1,100.1	1,164.4
Accumulated Amortization, amortizable intangible assets	(591.8)	(613.6)
Net Book Value, amortizable intangible assets	508.3	550.8
Patents [Member]
Intangible Assets Goodwill And Other Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	98.3	98.3
Accumulated Amortization, amortizable intangible assets	(98.0)	(95.8)
Net Book Value, amortizable intangible assets	0.3	2.5
Trademarks, licenses and agreements [Member]
Intangible Assets Goodwill And Other Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	29.7	28.7
Accumulated Amortization, amortizable intangible assets	(25.6)	(24.4)
Net Book Value, amortizable intangible assets	4.1	4.3
Trade names [Member]
Intangible Assets Goodwill And Other Assets [Line Items]
Gross Carrying Amount, amortizable intangible assets	27.1	23.9
Accumulated Amortization, amortizable intangible assets	(10.8)	(9.3)
Net Book Value, amortizable intangible assets	$ 16.3	$ 14.6