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PENSION AND POSTRETIREMENT BENEFITS (Fair Value Hierarchy) (Details) - USD ($) $ in Millions | May 29, 2016 | May 31, 2015
--- | --- | ---
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | $ 2,959.4 | $ 3,539.0
Cash and cash equivalents |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 74.3 | 82.7
U.S. equity securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 466.7 | 633.1
International equity securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 585.6 | 811.7
Government bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 276.1 | 334.4
Corporate bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 266.2 | 444.5
Mortgage-backed bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 122.5 | 73.5
Real estate funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 425.0 | 351.5
Multi-strategy hedge funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 466.4 | 484.5
Private equity funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 89.7 | 93.0
Master limited partnerships |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 155.8 | 191.4
Private natural resources funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 27.9 | 31.8
Net receivables for unsettled transactions |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 3.2 | 6.9
Level 1 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 1,005.9 | 1,248.8
Level 1 | Cash and cash equivalents |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.9 | 2.4
Level 1 | U.S. equity securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 453.5 | 542.2
Level 1 | International equity securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 267.5 | 362.9
Level 1 | Government bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 43.3 | 43.9
Level 1 | Corporate bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 23.6 | 49.6
Level 1 | Mortgage-backed bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 58.1 | 49.5
Level 1 | Real estate funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 1 | Multi-strategy hedge funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 1 | Private equity funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 1 | Master limited partnerships |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 155.8 | 191.4
Level 1 | Private natural resources funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 1 | Net receivables for unsettled transactions |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 3.2 | 6.9
Level 2 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 944.5 | 1,347.9
Level 2 | Cash and cash equivalents |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 73.4 | 80.3
Level 2 | U.S. equity securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 13.2 | 90.9
Level 2 | International equity securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 318.1 | 448.8
Level 2 | Government bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 232.8 | 290.5
Level 2 | Corporate bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 242.6 | 394.9
Level 2 | Mortgage-backed bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 64.4 | 24.0
Level 2 | Real estate funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 6.6
Level 2 | Multi-strategy hedge funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 2 | Private equity funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 2 | Master limited partnerships |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 2 | Private natural resources funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 11.9
Level 2 | Net receivables for unsettled transactions |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 3 |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 1,009.0 | 942.3
Level 3 | Cash and cash equivalents |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 3 | U.S. equity securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 3 | International equity securities |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 3 | Government bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 3 | Corporate bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 3 | Mortgage-backed bonds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 3 | Real estate funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 425.0 | 344.9
Level 3 | Multi-strategy hedge funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 466.4 | 484.5
Level 3 | Private equity funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 89.7 | 93.0
Level 3 | Master limited partnerships |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 0.0 | 0.0
Level 3 | Private natural resources funds |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | 27.9 | 19.9
Level 3 | Net receivables for unsettled transactions |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |
Total assets | $ 0.0 | $ 0.0

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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