Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Oct. 01, 2017	Jan. 01, 2017
Statement of Financial Position [Abstract]
Accumulated depreciation and amortization	$ 519.8	$ 468.5
Preferred stock, par value (in USD per share)	$ 0.01	$ 0.01
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	125,000,000	125,000,000
Common stock, shares, issued (in shares)	37,697,865	37,697,865
Common stock, shares outstanding (in shares)	35,436,187	35,110,762
Treasury stock (in shares)	2,261,678	2,587,103