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Segment Profit (Loss) and Reconciliation to Operating Loss Earnings by Segment (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 29, 2013
Mar. 30, 2012
Segment Reporting Information [Line Items]    
Total segment profit $ 20.8 $ 31.4
Sales and marketing expenses (27.0) (36.4)
General and administrative expenses (17.6) (21.1)
Equity-based compensation (1.2) (2.6)
Intangible asset amortization (1.1) (2.2)
Restructuring and other charges (34.7) (106.0)
Goodwill and IPR&D impairment      
Operating Loss (60.8) (136.9)
Optical Segment
   
Segment Reporting Information [Line Items]    
Total segment profit 12.8 14.8
Data segment
   
Segment Reporting Information [Line Items]    
Total segment profit (14.8) (5.0)
Access segment
   
Segment Reporting Information [Line Items]    
Total segment profit 8.2 6.4
Services segment
   
Segment Reporting Information [Line Items]    
Total segment profit $ 14.6 $ 15.2