Restructuring And Other Charges (Summary Of Restructuring And Other Charges Activity By Segment) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 30, 2011	Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 10.8	$ 17.0
Restructuring Expense	20.3	9.5
Cash Payments	(11.7)	(13.0)
Other Activities	(1.7)	(2.7)	[1]
Ending Balance	17.7	10.8
2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Expense	19.7
Cash Payments	(5.6)
Other Activities	(1.5)
Ending Balance	12.6
2011 Restructuring Plan [Member] | Broadband Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Expense	10.4
Cash Payments	(2.2)
Other Activities	(0.8)
Ending Balance	7.4
2011 Restructuring Plan [Member] | Transport Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Expense	5.3
Cash Payments	(1.1)
Other Activities	(0.6)
Ending Balance	3.6
2011 Restructuring Plan [Member] | Services Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Expense	4.0
Cash Payments	(2.3)
Other Activities	(0.1)
Ending Balance	1.6
2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	2.4
Restructuring Expense	0.8	9.0
Cash Payments	(2.9)	(4.0)
Other Activities		(2.6)	[1]
Ending Balance	0.3	2.4
2010 Restructuring Plan [Member] | Broadband Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	1.4
Restructuring Expense	0.5	5.7
Cash Payments	(1.7)	(3.2)
Other Activities		(1.1)	[1]
Ending Balance	0.2	1.4
2010 Restructuring Plan [Member] | Transport Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	1.0
Restructuring Expense	0.1	3.2
Cash Payments	(1.0)	(0.7)
Other Activities		(1.5)	[1]
Ending Balance	0.1	1.0
2010 Restructuring Plan [Member] | Services Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Expense	0.2	0.1
Cash Payments	(0.2)	(0.1)
2009 Restructuring Plans [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance		3.6
Restructuring Expense		0.9
Cash Payments		(2.6)
Other Activities		(0.1)	[1]
Ending Balance		1.8
2009 Restructuring Plans [Member] | Broadband Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance		1.1
Restructuring Expense		0.9
Cash Payments		(1.0)
Other Activities		(0.1)	[1]
Ending Balance		0.9
2009 Restructuring Plans [Member] | Transport Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance		1.0
Restructuring Expense		0.3
Cash Payments		(0.9)
Other Activities			[1]
Ending Balance		0.4
2009 Restructuring Plans [Member] | Services Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance		1.5
Restructuring Expense		(0.3)
Cash Payments		(0.7)
Other Activities			[1]
Ending Balance		0.5
Previous-2009 Restructuring Plans [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance		13.4
Restructuring Expense		(0.4)
Cash Payments		(6.4)
Ending Balance		6.6
Previous-2009 Restructuring Plans [Member] | Broadband Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance		7.7
Restructuring Expense		0.3
Cash Payments		(2.5)
Ending Balance		5.5
Previous-2009 Restructuring Plans [Member] | Transport Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance		5.7
Restructuring Expense		(0.7)
Cash Payments		(3.9)
Ending Balance		1.1
Previous-2010 Restructuring Plan Member
Restructuring Cost and Reserve [Line Items]
Beginning Balance	8.4
Restructuring Expense	(0.2)
Cash Payments	(3.2)
Other Activities	(0.2)
Ending Balance	4.8
Previous-2010 Restructuring Plan Member | Broadband Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	6.4
Restructuring Expense	0.4
Cash Payments	(2.2)
Other Activities	(0.1)
Ending Balance	4.5
Previous-2010 Restructuring Plan Member | Transport Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	1.5
Restructuring Expense	(1.1)
Cash Payments	(0.2)
Other Activities	(0.1)
Ending Balance	0.1
Previous-2010 Restructuring Plan Member | Services Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0.5
Restructuring Expense	0.5
Cash Payments	(0.8)
Ending Balance	$ 0.2

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