Summary of Restructuring and Other Charges Activity by Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2013		Mar. 30, 2012
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 21.9
Restructuring expense	34.7		106.0
Cash Payments	(10.2)
Other Activities	(11.2)	[1]
Ending Balance	35.2
2013 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring expense	32.8
Cash Payments	(4.8)
Other Activities	(11.7)	[1]
Ending Balance	16.3
2013 Restructuring Plan | Optical Segment
Restructuring Cost and Reserve [Line Items]
Restructuring expense	0.9
Cash Payments	(0.3)
Ending Balance	0.6
2013 Restructuring Plan | Data segment
Restructuring Cost and Reserve [Line Items]
Restructuring expense	31.5
Cash Payments	(4.4)
Other Activities	(11.7)	[1]
Ending Balance	15.4
2013 Restructuring Plan | Services segment
Restructuring Cost and Reserve [Line Items]
Restructuring expense	0.4
Cash Payments	(0.1)
Ending Balance	0.3
2012 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Beginning Balance	16.8
Restructuring expense	1.6
Cash Payments	(4.2)
Other Activities	0.5	[1]
Ending Balance	14.7
2012 Restructuring Plan | Optical Segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	3.9
Restructuring expense	(0.4)
Cash Payments	(0.8)
Ending Balance	2.7
2012 Restructuring Plan | Data segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	8.6
Restructuring expense	2.2
Cash Payments	(2.3)
Other Activities	0.5	[1]
Ending Balance	9.0
2012 Restructuring Plan | Access segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	1.5
Restructuring expense	(0.1)
Cash Payments	(0.3)
Ending Balance	1.1
2012 Restructuring Plan | Services segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	2.8
Restructuring expense	(0.1)
Cash Payments	(0.8)
Ending Balance	1.9
Previous Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Beginning Balance	5.1
Restructuring expense	0.3
Cash Payments	(1.2)
Ending Balance	4.2
Previous Restructuring Plans | Optical Segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0.6
Cash Payments	(0.3)
Ending Balance	0.3
Previous Restructuring Plans | Data segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	3.1
Restructuring expense	0.3
Cash Payments	(0.6)
Ending Balance	2.8
Previous Restructuring Plans | Access segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	1.4
Cash Payments	(0.3)
Ending Balance	$ 1.1

[1] Other activities include accelerated depreciation of property, plant and equipment to be disposed, the effects of currency translation as well as other changes that do not flow through restructuring expense.