Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 32.3	$ 33.7	$ 103.6	$ 134.3
Interest rate swaps:
Change in fair value, net of tax	(1.5)	2.8	(3.7)	4.6
Reclassification adjustment, net of tax	(0.9)	(0.2)	(2.2)
Other comprehensive (loss) income	(2.4)	2.6	(5.9)	4.6
Total comprehensive income	$ 29.9	$ 36.3	$ 97.7	$ 138.9