Valuation And Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2016	Jan. 02, 2015	Jan. 03, 2014
Valuation and Qualifying Accounts [Abstract]
Balance at beginning of period	$ 7.8	$ 6.3	$ 6.3
Acquired allowance	0.6	2.6	1.2
Bad debt expense	1.9	3.8	1.9
Write-offs, net of recoveries	(5.3)	(4.9)	(3.1)
Balance at end of period	$ 5.0	$ 7.8	$ 6.3