NOVEL CORONAVIRUS PANDEMIC (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 25, 2020		Jun. 27, 2019	Jun. 26, 2019
Novel Coronavirus Pandemic [Abstract]
Net property and equipment	$ 832.1			$ 755.1
Operating lease assets	1,159.9	[1]	$ 1,034.3	$ 0.0
Employee assistance expenses	15.5
Inventory spoilage	$ 0.6

[1] Operating lease assets are recorded in Operating lease assets and the related current and long-term lease liabilities are recorded within Operating lease liabilities and Long-term operating lease liabilities, less current portion, respectively.