SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Cumulative Effects of Changes Resulting From Adoption of ASC 606 (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 26, 2018	Aug. 27, 2017	May 27, 2018
Current assets
Receivables, less allowance for doubtful accounts	$ 599.2		$ 582.6
Inventories	1,108.5		997.1
Prepaid expenses and other current assets	224.7		186.8
Current liabilities
Other accrued liabilities	743.9		672.9
Noncurrent Liabilities:
Other noncurrent liabilities	1,002.9		1,065.2
Net sales	1,834.4	$ 1,804.2
Cost of goods sold	1,318.9	1,285.2
Income from continuing operations before income taxes and equity method investment earnings	219.4	$ 243.6
Accounting Standards Update 2014-09
Current assets
Receivables, less allowance for doubtful accounts	599.2
Inventories	1,108.5
Prepaid expenses and other current assets	224.7
Current liabilities
Other accrued liabilities	743.9
Noncurrent Liabilities:
Other noncurrent liabilities	1,002.9
Net sales	1,834.4
Cost of goods sold	1,318.9
Income from continuing operations before income taxes and equity method investment earnings	219.4
Balances without Adoption of Topic 606
Noncurrent Liabilities:
Net sales	1,825.1
Cost of goods sold	1,325.7
Income from continuing operations before income taxes and equity method investment earnings	203.3
Balances without Adoption of Topic 606 | Accounting Standards Update 2014-09
Current assets
Receivables, less allowance for doubtful accounts	607.1
Inventories	1,105.3
Prepaid expenses and other current assets	202.2
Current liabilities
Other accrued liabilities	742.8
Noncurrent Liabilities:
Other noncurrent liabilities	998.7
Adjustments | Accounting Standards Update 2014-09
Current assets
Receivables, less allowance for doubtful accounts	7.9		(7.6)
Inventories	(3.2)		2.8
Prepaid expenses and other current assets	(22.5)		6.9
Current liabilities
Other accrued liabilities	(1.1)		1.4
Noncurrent Liabilities:
Other noncurrent liabilities	(4.2)		$ 0.2
Net sales	(9.3)
Cost of goods sold	6.8
Income from continuing operations before income taxes and equity method investment earnings	$ (16.1)