STOCKHOLDERS' EQUITY - Dividends Paid (Details) - USD ($) $ in Millions		9 Months Ended
Feb. 28, 2020	Feb. 23, 2020	Feb. 24, 2019
Dividends
Dividends paid	$ 33.6	$ 87.7	$ 84.0

Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

Name:	us-gaap_PaymentsOfDividendsCommonStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration