SHAREHOLDERS' DEFICIT (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 25, 2020	Jun. 24, 2020	Jun. 26, 2019	Jun. 27, 2018	Jun. 27, 2019
Schedule of Capitalization, Equity [Line Items]
Stock Issued During Period, Shares, New Issues		8.1
Common stock issued average price per share		$ 18.25
Stock Issued During Period, Value, New Issues		$ 139.1
Retirement of treasury stock, shares		114.0
Retirement of treasury stock, price per share		$ 29.45
Treasury stock, shares		25.3	138.7
Retained (deficit) earnings		$ (397.5)	$ 2,771.2		$ 2,967.1
Dividends per share	$ 0.38	$ 1.14	$ 1.52	$ 1.52
Payments of Ordinary Dividends, Common Stock		$ 57.4	$ 60.3	$ 70.0
Treasury Stock, Shares, Acquired		0.8	3.6
Payments for repurchase of common stock		$ 32.4	$ 167.7	$ 303.2
Increase In Share Repurchase Program			300.0
Stock Repurchase Program, Authorized Amount		4,900.0
Stock Repurchase Program, Remaining Authorized Repurchase Amount		166.8
Accounting Standards Update 2016-02 [Member]
Schedule of Capitalization, Equity [Line Items]
Retained (deficit) earnings		$ 195.9
Accounting Standards Update 2014-09 [Member]
Schedule of Capitalization, Equity [Line Items]
Retained (deficit) earnings			$ (7.4)