Interest Expense (Schedule Of Interest Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Interest Expense [Abstract]
Interest on long-term debt	$ 50.1	$ 31.6	$ 23.6
Other interest expense	7.0	5.3	6.1
Total	$ 57.1	$ 36.9	$ 29.7