CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 11.4	$ 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)	44,000,000	44,300,000
Common stock, shares outstanding (in shares)	44,000,000	44,300,000