Acquisitions (Schedule Of Purchase Price Allocation among Assets Acquired) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012
Business Acquisition [Line Items]
Current assets	$ 4.1
Property, plant and equipment	1.3
Goodwill	29.0
Total assets acquired	126.8
Current liabilities	4.8
Deferred tax liabilities	10.4
Liabilities assumed	15.2
Net assets acquired	111.6
Intellectual Property [Member]
Business Acquisition [Line Items]
Intangible assets	46.9
In Process Research And Developments [Member]
Business Acquisition [Line Items]
Intangible assets	$ 45.5