SHARE-BASED PAYMENTS (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Aug. 24, 2014	Aug. 25, 2013
Stock Based Compensation Activity [Line Items]
Total stock-based compensation expense	$ 17.1	$ 17.4
Stock option granted	3.8
Weighted average exercise price of stock options granted	$ 30.89
Weighted average value of stock options granted during the first three quarters of fiscal 2014	$ 3.28
Performance period ending 2015
Stock Based Compensation Activity [Line Items]
Percentage of the targeted number of performance shares, minimum range and will be paid in shares of common stock	0.00%
Percentage of the targeted number of performance shares, maximum range and will be paid in shares of common stock	220.00%
Percentage of target incentive required payout	25.00%
Performance period ending 2014
Stock Based Compensation Activity [Line Items]
Percentage of the targeted number of performance shares, minimum range and will be paid in shares of common stock	0.00%
Percentage of the targeted number of performance shares, maximum range and will be paid in shares of common stock	220.00%
Percentage of target incentive required payout	25.00%
Restricted stock
Stock Based Compensation Activity [Line Items]
Stock granted, shares	0.7
Weighted average value of stock options granted	$ 30.94
Cash-settled restricted stock units
Stock Based Compensation Activity [Line Items]
Stock granted, shares	0.9
Weighted average value of stock options granted	$ 30.89
Performance shares
Stock Based Compensation Activity [Line Items]
Stock granted, shares	0.4
Weighted average value of stock options granted	$ 30.89
Ardent Mills
Stock Based Compensation Activity [Line Items]
Total stock-based compensation expense	0.4
Subsidiaries
Stock Based Compensation Activity [Line Items]
Total stock-based compensation expense	$ 0.3	$ 0.2

Percentage of the targeted number of performance shares maximum range and will be paid in shares of common stock.

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- Definition

Percentage of the targeted number of performance shares, minimum range and will be paid in shares of common stock.

+ References

No definition available.

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Percentage of target incentive required payout.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Exercise Prices

+ References

No definition available.

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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 50

-Paragraph 1

-Subparagraph (b)

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-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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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=6415400&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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

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- Definition

Net number of share options (or share units) granted during the period.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ 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 (d)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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