Guarantor And Non-Guarantor Supplemental Financial Information (Schedule Of Balance Sheet Information) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Total current assets	$ 2,274,429	$ 1,707,555
Intangible assets, net	743,898	747,613
Goodwill	2,877,301	2,864,664	2,868,739
Other assets, net	609,630	1,337,090
TOTAL ASSETS	6,505,258	6,656,922
Total current liabilities	2,553,357	1,895,347
Long-term debt	1,249,281	1,249,221
Other liabilities	397,453	775,651
Stockholders' equity	2,305,167	2,736,703	2,749,726	2,380,964
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	6,505,258	6,656,922
Parent [Member]
Total current assets	551,488	70,012
Investment in subsidiaries	3,891,811	4,589,428
Other assets, net	5,587	8,415
TOTAL ASSETS	4,448,886	4,667,855
Total current liabilities	894,438	286,258
Long-term debt	1,249,281	1,249,221
Other liabilities		395,673
Stockholders' equity	2,305,167	2,736,703
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	4,448,886	4,667,855
Guarantor Subsidiaries [Member]
Total current assets	1,538,509	1,376,835
Investment in subsidiaries	1,126,412	1,061,282
Intangible assets, net	634,581	639,569
Goodwill	2,415,482	2,416,314
Other assets, net	465,473	1,075,548
TOTAL ASSETS	6,180,457	6,569,548
Total current liabilities	1,906,349	1,690,287
Other liabilities	378,729	290,289
Stockholders' equity	3,895,379	4,588,972
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	6,180,457	6,569,548
Non-Guarantor Subsidiaries [Member]
Total current assets	644,825	608,428
Intangible assets, net	109,317	108,044
Goodwill	461,819	448,350
Other assets, net	138,570	253,127
TOTAL ASSETS	1,354,531	1,417,949
Total current liabilities	212,963	266,522
Other liabilities	18,724	89,689
Stockholders' equity	1,122,844	1,061,738
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,354,531	1,417,949
Eliminations [Member]
Total current assets	(460,393)	(347,720)
Investment in subsidiaries	(5,018,223)	(5,650,710)
TOTAL ASSETS	(5,478,616)	(5,998,430)
Total current liabilities	(460,393)	(347,720)
Stockholders' equity	(5,018,223)	(5,650,710)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ (5,478,616)	$ (5,998,430)