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SHARE-BASED PAYMENTS - Share Unit Plans (Narrative) (Details) - Share Unit Plans - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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May 27, 2018 | May 28, 2017 | May 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Award vesting period | 3 years |  |
Stock-settled |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Compensation expense | $ 21.8 | $ 18.2 | $ 25.1
Tax benefit | $ 7.2 | $ 7.0 | $ 9.6
Share units granted (in shares) | 870,000 | 600,000 | 1,000,000
Weighted average grant date fair value of share units (in dollars per share) | $ 34.16 | $ 46.79 | $ 43.64
Total intrinsic value of share units vested | $ 18.5 | $ 27.0 | $ 48.8
Unrecognized compensation expense, net of estimated forfeitures, related to share unit awards | $ 22.8 |  |
Weighted average period for recognition | 1 year 9 months |  |
Cash-settled |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Compensation expense | $ 5.8 | 20.9 | 33.9
Tax benefit | $ 1.9 | $ 8.0 | $ 13.0
Share units granted (in shares) | 0 | 400,000 | 800,000
Weighted average grant date fair value of share units (in dollars per share) | $ 0.00 | $ 48.07 | $ 44.48
Total intrinsic value of share units vested | $ 14.2 | $ 24.0 | $ 44.9
Unrecognized compensation expense, net of estimated forfeitures, related to share unit awards | $ 5.2 |  |
Weighted average period for recognition | 1 year |  |
Discontinued operations | Stock-settled |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Compensation expense |  | 1.4 | 3.9
Discontinued operations | Cash-settled |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Compensation expense |  | $ 2.6 | $ 7.4

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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