Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 27, 2020	Dec. 29, 2019	Dec. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 194.8	$ 193.2	$ 183.7
Other comprehensive income (loss)
Foreign currency translation gain (loss)	3.3	(1.9)	(1.7)
Comprehensive income	$ 198.1	$ 191.3	$ 182.0