Employee Pension and Other Benefit Plans - Changes in the Benefit Obligations and Plan Assets (Details) - Pension Benefit Plans - USD ($) $ in Millions	12 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 30, 2018
Change in benefit obligation
Benefit obligation at beginning of year	$ 140.0	$ 136.7
Service cost	0.3	0.2	$ 0.2
Interest cost	1.9	2.5	2.7
Actuarial (gains) losses	4.6	10.0
Benefits paid	(5.1)	(5.4)
Assumed benefit obligation from acquisition	0.0	0.0
Foreign exchange impact	(2.8)	(4.0)
Benefit obligation at end of year	138.9	140.0	136.7
Change in plan assets
Fair value of plan assets at beginning of year	29.9	30.0
Actual return on plan assets	0.2	1.4
Employer contributions	4.8	5.1
Benefits paid	(5.0)	(5.4)
Foreign exchange impact	(0.9)	(1.2)
Fair value of plan assets at end of year	29.0	29.9	$ 30.0
Funded status	(109.9)	(110.1)
Accumulated benefit obligation	$ 138.6	$ 139.7