Interest Expense (Tables)

12 Months Ended

Dec. 31, 2011

Interest Expense [Abstract]

Schedule Of Interest Expense

	For the Years Ended
(in millions of U.S. dollars)	December 31, 2011		January 1, 2011		January 2, 2010
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