Summary of Restructuring and Other Charges Activity by Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 28, 2013		Jun. 29, 2012	Jun. 28, 2013		Jun. 29, 2012
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 35.2			$ 21.9
Restructuring expense	0.5		0.9	35.2		106.9
Cash Payments	(13.3)			(23.5)		(26.6)
Other Activities	(3.2)	[1]		(14.4)	[1]
Ending Balance	19.2			19.2
2013 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Beginning Balance	16.3
Restructuring expense	3.5			36.3
Cash Payments	(8.1)			(12.9)
Other Activities	(2.4)	[1]		(14.1)	[1]
Ending Balance	9.3			9.3
2013 Restructuring Plan | Optical Segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0.6
Restructuring expense	0.1			1.0
Cash Payments	(0.4)			(0.7)
Ending Balance	0.3			0.3
2013 Restructuring Plan | Data segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	15.4
Restructuring expense	3.4			34.9
Cash Payments	(7.4)			(11.8)
Other Activities	(2.4)	[1]		(14.1)	[1]
Ending Balance	9.0			9.0
2013 Restructuring Plan | Services segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0.3
Restructuring expense				0.4
Cash Payments	(0.3)			(0.4)
2012 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Beginning Balance	14.7			16.8
Restructuring expense	(3.3)			(1.7)
Cash Payments	(4.5)			(8.7)
Other Activities	(0.8)	[1]		(0.3)	[1]
Ending Balance	6.1			6.1
2012 Restructuring Plan | Optical Segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	2.7			3.9
Restructuring expense				(0.4)
Cash Payments	(1.3)			(2.1)
Ending Balance	1.4			1.4
2012 Restructuring Plan | Data segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	9.0			8.6
Restructuring expense	(3.9)			(1.7)
Cash Payments	(1.6)			(3.9)
Other Activities	(0.8)	[1]		(0.3)	[1]
Ending Balance	2.7			2.7
2012 Restructuring Plan | Access segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	1.1			1.5
Restructuring expense				(0.1)
Cash Payments	(0.4)			(0.7)
Ending Balance	0.7			0.7
2012 Restructuring Plan | Services segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	1.9			2.8
Restructuring expense	0.6			0.5
Cash Payments	(1.2)			(2.0)
Ending Balance	1.3			1.3
Previous Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Beginning Balance	4.2			5.1
Restructuring expense	0.3			0.6
Cash Payments	(0.7)			(1.9)
Ending Balance	3.8			3.8
Previous Restructuring Plans | Optical Segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0.3			0.6
Restructuring expense	0.3			0.3
Cash Payments	0.1			(0.2)
Ending Balance	0.7			0.7
Previous Restructuring Plans | Data segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	2.8			3.1
Restructuring expense				0.3
Cash Payments	(0.4)			(1.0)
Ending Balance	2.4			2.4
Previous Restructuring Plans | Access segment
Restructuring Cost and Reserve [Line Items]
Beginning Balance	1.1			1.4
Cash Payments	(0.4)			(0.7)
Ending Balance	$ 0.7			$ 0.7

[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.