Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2016	Jan. 02, 2016
Statement of Financial Position [Abstract]
Allowance for trade receivables	$ 11.5	$ 11.3
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	44,800,000	44,700,000
Common stock, shares outstanding (in shares)	44,800,000	44,700,000