PENSION AND POSTRETIREMENT BENEFITS - Schedule of Assumed Health Care Cost Trend Rates (Details)	May 27, 2018	May 28, 2017
Assumed Health Care Cost Trend Rates at:
Initial health care cost trend rate	7.87%	8.44%
Ultimate health care cost trend rate	4.50%	4.50%

Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (l)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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Balance Type:	na
Period Type:	instant