Income Tax (Benefit) Expense (Reconciliation Of Unrecognized Tax Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Income Tax (Benefit) Expense [Abstract]
Unrecognized tax benefits at beginning of year	$ 13.3	$ 14.7	$ 38.7
Additions based on tax positions taken during a prior period	0.2	0.4	2.2
Reductions based on tax positions taken during a prior period		(2.6)	(29.9)
Settlement on tax positions taken during a prior period	(5.8)	(0.8)	(0.4)
Additions based on tax positions taken during the current period	1.7	1.1	1.7
Foreign exchange	(0.4)	0.5	2.4
Unrecognized tax benefits at end of year	$ 9.0	$ 13.3	$ 14.7