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Statement Of Cash Flow Information (Supplemental Cash Flow Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Statement Of Cash Flow Information [Abstract]
Interest paid, net of capitalized interest	$ 20,164	$ 32,554
Income taxes paid	$ 4,521	$ 6,725

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.