MULTIEMPLOYER EMPLOYEE BENEFIT PLANS (Details)	12 Months Ended
Jun. 27, 2020
Pension Benefits
Multiemployer Plans [Line Items]
Percentage of employees participating in multi-employer plans	11.00%

Percentage of current employees that are participants in multiemployer plans. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

No definition available.

Name:	syy_PercentageOfEmployeesParticipatingInMultiemployerPlans
Namespace Prefix:	syy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration