Consolidated Statements Of Cash Flows Information (Tables)

12 Months Ended

Dec. 31, 2011

Consolidated Statements Of Cash Flows Information [Abstract]

Schedule Of Supplemental Disclosures Of Cash Flow Information

	2011			2010			2009
Net cash paid (received) during the year for:
Interest	$	119,463			139,358			127,623
Income taxes	$	34,479			(5,862	)		(3,841	)
Supplemental schedule of non-cash investing and financing activities:
Fair value of assets acquired in acquisition	$	37,486			—			17,911
Liabilities assumed in acquisition		(13,389	)		—			(11,987	)
	$	24,097			—			5,924