Restructuring And Other Charges (Summary Of Restructuring And Other Charges Activity By Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended																			3 Months Ended
	Mar. 30, 2012		Mar. 30, 2012 2012 Restructuring Plan [Member]		Mar. 30, 2012 2012 Restructuring Plan [Member] Broadband Segment [Member]		Mar. 30, 2012 2012 Restructuring Plan [Member] Transport Segment [Member]		Mar. 30, 2012 2012 Restructuring Plan [Member] Services Segment [Member]	Mar. 30, 2012 2011 Restructuring Plan [Member]		Mar. 30, 2012 2011 Restructuring Plan [Member] Broadband Segment [Member]		Mar. 30, 2012 2011 Restructuring Plan [Member] Transport Segment [Member]	Mar. 30, 2012 2011 Restructuring Plan [Member] Services Segment [Member]	Mar. 30, 2012 Previous Restructuring Plans [Member]	Mar. 30, 2012 Previous Restructuring Plans [Member] Broadband Segment [Member]	Mar. 30, 2012 Previous Restructuring Plans [Member] Transport Segment [Member]	Dec. 30, 2011 Previous Restructuring Plans [Member] Transport Segment [Member]	Mar. 30, 2012 Previous Restructuring Plans [Member] Services Segment [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 17.7									$ 12.6		$ 7.4		$ 3.6	$ 1.6	$ 5.1	$ 4.7	$ 0.2	$ 0.2	$ 0.2
Restructuring Expense	106.0		104.5		98.9		3.1		2.5	1.6		0.5		(0.3)	1.4	(0.1)	(0.1)
Cash Payments	(13.9)		(8.9)		(8.1)		(0.3)		(0.5)	(4.4)		(2.0)		(1.1)	(1.3)	(0.6)	(0.5)			(0.1)
Other Activities	(73.0)	[1]	(72.8)	[1]	(72.5)	[1]	(0.3)	[1]		(0.2)	[1]	(0.2)	[1]
Ending Balance	$ 36.8		$ 22.8		$ 18.3		$ 2.5		$ 2.0	$ 9.6		$ 5.7		$ 2.2	$ 1.7	$ 4.4	$ 4.1	$ 0.2	$ 0.2	$ 0.1

[1] 1 Other activities include accelerated amortization related to abandoned intangible assets, 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.