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Segment Information (Schedule Of Segment Information On Property, Plant And Equipment By Region) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 12.7	$ 83.2
United States [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment	8.9	78.4
Ireland [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 3.8	$ 4.8

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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