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Property And Equipment, Net (Narrative) (Detail) (Segment, Continuing Operations [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment, Continuing Operations [Member]
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 19.8	$ 15.7	$ 56.6	$ 43.1

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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