Restructuring and Other Charges - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2013	Mar. 30, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 34.7	$ 106.0
Expiration year of lease obligations	2017
Expected date of last severance payment	2015
January 2013 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected workforce reductions	300
Restructuring expense	32.8
Expected total cash payments	21.5
Cash payments	4.8
January 2013 Restructuring Plan | Optical Segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	0.9
January 2013 Restructuring Plan | Data segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	31.5
January 2013 Restructuring Plan | Services segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	0.4
October 2012 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected workforce reductions	200
Restructuring expense	0.1
Cumulative pretax restructuring charges incurred to date	9.5
Expected total cash payments	9.3
Cash payments	2.7
October 2012 Restructuring Plan | Optical Segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	2.2
October 2012 Restructuring Plan | Data segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	3.8
October 2012 Restructuring Plan | Services segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	2.7
October 2012 Restructuring Plan | Access segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	0.8
January 2012 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring expense	1.5
Cumulative pretax restructuring charges incurred to date	110.3
Expected total cash payments	32.9
Cash payments	24.6
January 2012 Restructuring Plan | Optical Segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	4.4
January 2012 Restructuring Plan | Data segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	102.2
January 2012 Restructuring Plan | Services segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	2.2
January 2012 Restructuring Plan | Access segment
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	1.5
Previous Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Restructuring expense	0.3
Severance and other termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring expense	15.8	24.1
Severance and other termination benefits | January 2013 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected pretax charges	16
Restructuring expense	16.2
Severance and other termination benefits | October 2012 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected pretax charges	9
Restructuring expense	(0.2)
Cumulative pretax restructuring charges incurred to date	9.0
Severance and other termination benefits | January 2012 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	23.1
Severance and other termination benefits | Previous Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Restructuring expense	(0.1)
Facility- and Asset-Related Charges
Restructuring Cost and Reserve [Line Items]
Restructuring expense	14.7	33.0
Facility- and Asset-Related Charges | January 2013 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected pretax charges	15
Restructuring expense	12.4
Facility- and Asset-Related Charges | October 2012 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected pretax charges	2
Restructuring expense	0.3
Cumulative pretax restructuring charges incurred to date	0.5
Facility- and Asset-Related Charges | January 2012 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring expense	1.6
Cumulative pretax restructuring charges incurred to date	38.3
Facility- and Asset-Related Charges | Previous Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Restructuring expense	0.4
Software license and other contract cancellations | January 2013 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected pretax charges	4
Other obligations
Restructuring Cost and Reserve [Line Items]
Restructuring expense	4.2	1.2
Other obligations | January 2013 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	4.2
Other obligations | January 2012 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	1.2
Accelerated amortization of intangible assets
Restructuring Cost and Reserve [Line Items]
Restructuring expense		47.7
Accelerated amortization of intangible assets | January 2012 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Cumulative pretax restructuring charges incurred to date	$ 47.7