Other Expense, Net - Schedule of Other Expense, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2017	Jan. 03, 2016		Dec. 28, 2014
Other Income and Expenses [Abstract]
Interest income	$ 0.4	$ 0.3		$ 0.5
Interest expense	(3.8)	(3.8)		(3.0)
Dividend income	1.2	0.9		0.7
Foreign exchange gains/(losses)	1.6	(0.9)		(1.0)
Other	(0.1)	0.0		0.0
Other expense, net	$ (0.7)	$ (3.5)	[1]	$ (2.8)

[1] Fiscal year included 53 weeks.