CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011		Jun. 30, 2012	Jun. 30, 2011
Income Statement [Abstract]
Revenue	$ 338,291	$ 391,555	[1]	$ 686,743	$ 767,524	[1]
Cost of goods sold	168,262	186,144	[1]	333,988	365,601	[1]
Gross profit	170,029	205,411	[1]	352,755	401,923	[1]
Operating expenses
Research and development	37,510	39,481	[1]	74,080	77,070	[1]
Selling, general and administrative	71,798	124,127	[1]	149,658	206,735	[1]
Total operating expenses	109,308	163,608	[1]	223,738	283,805	[1]
Earnings from operations	60,721	41,803	[1]	129,017	118,118	[1]
Interest expense	2,768	435		5,834	786	[1]
Interest income	(377)	(86)		(805)	(350)	[1]
Other expense (income), net	240	(2,124)	[1]	(984)	(1,272)	[1]
Earnings from continuing operations before income taxes	58,090	43,578	[1]	124,972	118,954	[1]
Income tax provision	15,685	13,755	[1]	33,742	37,528	[1]
Earnings from continuing operations	42,405	29,823	[1]	91,230	81,426	[1]
Loss from discontinued operations, net of tax	(1,312)	(514)	[1]	(1,998)	(802)	[1]
Net earnings	$ 41,093	$ 29,309		$ 89,232	$ 80,624
Basic earnings per share:
Continuing operations (in dollars per share)	$ 0.28	$ 0.19		$ 0.59	$ 0.51
Discontinued operations (in dollars per share)	$ (0.01)	$ 0.00		$ (0.01)	$ (0.01)
Basic earnings per share (in dollars per share)	$ 0.27	$ 0.18		$ 0.58	$ 0.51
Diluted earnings per share:
Continuing operations (in dollars per share)	$ 0.27	$ 0.18		$ 0.58	$ 0.50
Discontinued operations (in dollars per share)	$ (0.01)	$ 0.00		$ (0.01)	$ 0.00
Diluted earnings per share (in dollars per share)	$ 0.27	$ 0.18		$ 0.57	$ 0.50
Weighted average shares outstanding:
Basic (in shares)	153,172	159,796	[1]	153,829	159,599	[1]
Diluted (in shares)	155,033	162,550	[1]	155,983	162,427	[1]

[1] Amounts have been adjusted for the reclassification of certain discontinued operations to continuing operations.