XML 113 R104.htm IDEA: XBRL DOCUMENT v3.20.4
Retirement Savings Plan - Narrative (Details)
$ in Millions
12 Months Ended
Jun. 28, 2020
USD ($)
numberOfCompensationPlan
Jun. 30, 2019
USD ($)
Jun. 24, 2018
USD ($)
Retirement Benefits [Abstract]      
Number of employee benefit plans | numberOfCompensationPlan 1    
Employer discretionary contribution amount | $ $ 7.7 $ 7.3 $ 5.2