XML 24 R48.htm IDEA: XBRL DOCUMENT

Property and Equipment, net - Depreciation Expense (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 163.5	$ 190.3

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.

+ References+ Details