Schedule of Selected Operating Segment Financial Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Apr. 01, 2012
Segment Reporting Information [Line Items]
Restructuring and impairments expense	$ (1.2)		$ (2.4)
Stock-based compensation expense	(6.3)		(6.9)
Selling, general and administrative expense	(51.6)		(54.7)
Release of litigation charge	(12.6)
Total revenue	343.2		352.2
Operating income	5.8		2.9
Other expense, net	4.6		1.5
Income before income taxes	1.2		1.4
MCCC
Segment Reporting Information [Line Items]
Total revenue	135.2		142.6
Operating income	18.0		24.9
PCIA
Segment Reporting Information [Line Items]
Total revenue	174.6		174.2
Operating income	21.0		25.0
SDT
Segment Reporting Information [Line Items]
Total revenue	33.4		35.4
Operating income	3.2		4.3
Corporate
Segment Reporting Information [Line Items]
Restructuring and impairments expense	(1.2)		(2.4)
Stock-based compensation expense	(6.3)		(6.9)
Selling, general and administrative expense	(38.8)		(42.2)
Release of litigation charge	12.6
Other	$ (2.8)	[1]	$ 0.2	[1]

[1] Other consists primarily of accelerated depreciation on the closure of our 8 inch line at our Salt Lake facility.