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SHARE-BASED PAYMENTS - Stock Option Plan (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	May 26, 2019	May 27, 2018	May 28, 2017	Feb. 24, 2019	Nov. 25, 2018	Aug. 26, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	0	0	1,100,000
Total intrinsic value of options exercised	$ 7.9	$ 15.8	$ 29.8
Closing market price of common stock (in dollars per share)	$ 28.83
Unrecognized compensation expense, net of estimated forfeitures, related to stock options	$ 0.2
Cash received from option exercises	12.4	25.1	84.4
Actual tax benefit realized for tax deductions from option exercises	$ 2.3	$ 5.3	$ 19.5
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing market price of common stock (in dollars per share)	$ 22.37	$ 35.34		$ 20.85	$ 32.42	$ 34.64	$ 35.47	$ 32.43	$ 33.07
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing market price of common stock (in dollars per share)	$ 31.28	$ 38.29		$ 32.60	$ 38.25	$ 38.94	$ 38.50	$ 35.87	$ 39.95
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Weighted average grant date value (in dollars per share)			$ 6.12
Compensation expense (income)	$ 2.2	$ 4.2	$ 6.2
Tax benefit	$ 0.5	1.4	2.4
Weighted average period for recognition	1 month 24 days
Options \| Subsidiary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)	$ 0.2	$ 0.4	0.9
Options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of options	7 years
Options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of options	10 years
Discontinued operations \| Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense (income)			$ 0.2