CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income Statement [Abstract]
Revenue	$ 348,452	$ 375,969	[1]
Cost of goods sold	165,725	179,457	[1]
Gross profit	182,727	196,512	[1]
Operating Expenses [Abstract]
Research and development	36,571	37,589	[1]
Selling, general and administrative	77,860	82,607	[1]
Total operating expenses	114,431	120,196	[1]
Earnings from operations	68,296	76,316	[1]
Interest expense	3,066	350	[1]
Interest income	(428)	(264)	[1]
Other (income) expense, net	(1,225)	852	[1]
Earnings from continuing operations before income taxes	66,883	75,378	[1]
Income tax provision	18,058	23,772	[1]
Earnings from continuing operations	48,825	51,606	[1]
Loss from discontinued operations, net of tax	(686)	(291)	[1]
Net earnings	$ 48,139	$ 51,315	[1]
Basic earnings per share:
Continuing operations (in dollars per share)	$ 0.32	$ 0.32	[1]
Discontinued operations (in dollars per share)	$ 0.00	$ 0.00	[1]
Basic earnings per share (in dollars per share)	$ 0.31	$ 0.32	[1]
Diluted earnings per share:
Continuing operations (in dollars per share)	$ 0.31	$ 0.32	[1]
Discontinued operations (in dollars per share)	$ 0.00	$ 0.00	[1]
Diluted earnings per share (in dollars per share)	$ 0.31	$ 0.32	[1]
Weighted average shares outstanding:
Basic (in shares)	154,485	159,400	[1]
Diluted (in shares)	156,972	162,310	[1]

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