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Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule Of Supplemental Cash Flow [Line Items]
Income tax refunds received	$ 8,382	$ 8,432	$ 18,842
Income taxes paid	(34,854)	(18,759)	(30,556)
Interest paid, net of amount capitalized	$ (41,854)	$ (43,980)	$ (44,781)

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.