STOCK-BASED COMPENSATION - Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
May 29, 2022	May 30, 2021	May 31, 2020
Compensation expense
Stock-settled compensation expense	$ 21.3	$ 20.6	$ 22.8
Cash-settled RSUs			1.0
Total compensation expense	21.3	20.6	23.8
Income tax benefit	(3.9)	(3.7)	(4.6)
Total compensation expense, net of tax benefit	17.4	16.9	19.2
Restricted Stock Units (RSUs)
Compensation expense
Stock-settled compensation expense	15.1	13.9	12.9
Performance Shares
Compensation expense
Stock-settled compensation expense	$ 6.2	$ 6.7	9.8
Stock Options
Compensation expense
Stock-settled compensation expense			$ 0.1

Share-Based Payment Arrangement, Expense, Cash-settled

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Share-Based Payment Arrangement, Expense, Stock-settled

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Amount, after tax, of expense for award under share-based payment arrangement.

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