Segment Information (Details) (USD $) In Millions	3 Months Ended				6 Months Ended
	Jun. 26, 2011		Jun. 27, 2010		Jun. 26, 2011		Jun. 27, 2010
Total revenue	$ 433.2		$ 409.6		$ 846.2		$ 787.6
Operating income	54.9		52.6		106.8		85.5
Restructuring and impairments expense	(2.9)				(5.4)		(2.4)
Stock-based compensation expense					(13.0)		(11.2)
Selling, general and administrative expense	(58.3)		(56.0)		(113.4)		(108.3)
Other expense, net	3.3		2.6		4.4		5.0
Income before income taxes	51.6		50.0		102.4		80.5
MCCC [Member]
Total revenue	166.1		168.8		328.1		324.9
Operating income	32.7		41.2		68.6		73.2
PCIA [Member]
Total revenue	224.4		190.6		434.3		369.7
Operating income	66.0		51.7		124.6		94.8
SDT [Member]
Total revenue	42.7		50.2		83.8		93.0
Operating income	8.8		10.3		17.7		18.1
Corporate [Member]
Restructuring and impairments expense	(2.9)		0		(5.4)		(2.4)
Stock-based compensation expense	(8.0)		(5.9)		(13.0)		(11.7)
Selling, general and administrative expense	(41.4)		(43.1)		(85.0)		(83.2)
Other	$ (0.3)	[1]	$ (1.6)	[1]	$ (0.7)	[1]	$ (3.3)	[1]

[1] Other primarily consists of accelerated depreciation related to the planned closure of the Mountaintop facility.