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Income Taxes (Reconciliation Of Income Tax Expense (Benefit) Attributable To Continuing Operations) (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2011
U.S. statutory rate	35.00%

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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