Consolidated Statements Of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 25, 2011	Sep. 26, 2010	Sep. 25, 2011	Sep. 26, 2010
Consolidated Statements Of Operations
Total revenue	$ 403.2	$ 414.4	$ 1,249.4	$ 1,202.0
Cost of sales	258.4	263.5	791.9	786.2
Gross margin	144.8	150.9	457.5	415.8
Gross margin %	35.90%	36.40%	36.60%	34.60%
Operating expenses:
Research and development	37.8	30.5	114.6	88.0
Selling, general and administrative	54.4	57.3	167.8	165.6
Amortization of acquisition-related intangibles	4.7	5.5	15.0	16.7
Restructuring and impairments	4.1	1.3	9.5	3.7
Charge for litigation		8.0		8.0
Total operating expenses	101.0	102.6	306.9	282.0
Operating income	43.8	48.3	150.6	133.8
Other expense, net	1.4	3.8	5.8	8.8
Income before income taxes	42.4	44.5	144.8	125.0
Provision for income taxes	6.6	8.7	20.6	22.8
Net income	$ 35.8	$ 35.8	$ 124.2	$ 102.2
Net income per common share:
Basic	$ 0.28	$ 0.29	$ 0.98	$ 0.82
Diluted	$ 0.28	$ 0.28	$ 0.95	$ 0.80
Weighted average common shares:
Basic	126.9	124.5	127.0	124.8
Diluted	129.9	127.1	130.8	128.0