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Intangible Assets, Net - Gross Cost and Accumulated Amortization of Intangible Assets (Parenthetical) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Acquisition of internal-use software	$ 12

The cash outflow associated with the acquisition from vendors of software programs or applications for internal use (that is, not to be sold, leased or otherwise marketed to others) that qualify for capitalization.

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