NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Schedule of Weighted Average Number of Shares (Details) - shares shares in Millions	3 Months Ended								12 Months Ended
	Jun. 24, 2020	Mar. 25, 2020	Dec. 25, 2019	Sep. 25, 2019	Jun. 26, 2019	Mar. 27, 2019	Dec. 26, 2018	Sep. 26, 2018	Jun. 24, 2020	Jun. 26, 2019	Jun. 27, 2018
Reconciliation of Weighted Average Shares Outstanding [Line Items]
Basic weighted average shares outstanding	40.9	37.2	37.4	37.5	37.5	37.5	38.1	40.4	38.2	38.3	45.7
Weighted average number diluted shares outstanding adjustment									0.7	0.8	0.6
Diluted weighted average shares outstanding	40.9	37.8	38.1	38.1	38.3	38.1	38.8	41.1	38.9	39.1	46.3
Stock options and restricted share awards outstanding excluded from dilutive earnings per share									1.5	0.9	1.1
Stock Options
Reconciliation of Weighted Average Shares Outstanding [Line Items]
Incremental common shares attributable to dilutive effect of share-based payment arrangements									0.1	0.2	0.1
Restricted Shares
Reconciliation of Weighted Average Shares Outstanding [Line Items]
Incremental common shares attributable to dilutive effect of share-based payment arrangements									0.6	0.6	0.5