Reconciliation of Segment Operating Income to Net Income from Continuing Operations (Detail) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment operating income	$ 108,572	$ 66,483	$ 282,153	$ 114,540
Interest expense	12,917	14,151	40,709	43,653
Interest income	(180)	(73)	(407)	(249)
Income taxes	36,513	20,814	91,420	28,609
Income from continuing operations	$ 59,322	$ 31,591	$ 150,431	$ 42,527

This element represents the income or loss from continuing operations attributable to the parent which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests, if any.

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+ Details

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