SUPPLEMENTAL CASH FLOW INFORMATION (Non-Cash Investing and Financing Activities) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021		Jun. 24, 2020		Jun. 26, 2019
Retirement of fully depreciated assets	$ 22.4		$ 32.3		$ 28.9
Accrued capital expenditures	8.8		7.1		9.3
Capital lease additions	0.0	[1]	0.0	[1]	15.1
Dividend Declared [Member]
Dividends declared but not paid	$ 0.0		$ 1.2		$ 15.6

[1] Capital lease additions for the fiscal years ended June 30, 2021 and June 24, 2020 are now disclosed as part of the finance lease disclosures in Note 9 - Leases, “Consolidated Statement of Cash Flows Disclosure of Lease Amounts” section.