Share-Based Compensation (Schedule Of Compensation Cost For Stock Options And Unvested Shares) (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense before income taxes	$ 4,661,000	$ 4,849,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense before income taxes	2,259,000	2,288,000
Income tax benefit	(708,000)	(736,000)
Total expense after income taxes	1,551,000	1,552,000
Unvested Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense before income taxes	2,402,000.000	2,561,000.000
Income tax benefit	(663,000.000)	(504,000.000)
Total expense after income taxes	1,739,000.000	2,057,000.000
Cost Of Goods Sold [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense before income taxes	293,000	235,000
Cost Of Goods Sold [Member] | Unvested Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense before income taxes	406,000.000	148,000.000
Selling, General And Administrative Expenses [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense before income taxes	1,966,000	2,053,000
Selling, General And Administrative Expenses [Member] | Unvested Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expense before income taxes	$ 1,996,000.000	$ 2,413,000.000