Fair value investments ability to impose customary redemption gates.

No definition available.

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- Definition

Fair value investments impose customary redemption gates.

+ References

No definition available.

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- Definition

Green zone multiemployer plan funded percentage.

+ References

No definition available.

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- Definition

The expected incurrence of certain withdrawal costs related to multiemployer plans.

+ References

No definition available.

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- Definition

Percentage providing more than plans total contribution.

+ References

No definition available.

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- Definition

Red zone multiemployer plans funded percentage.

+ References

No definition available.

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- Definition

Unfunded commitment for additional investment.

+ References

No definition available.

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- Definition

Yellow zone multiemployer plans funded percentage.

+ References

No definition available.

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- Definition

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6503844

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

If applicable, the cost of providing special or contractual termination benefits recognized during the period on the projected benefit obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (q)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period.

+ References

No definition available.

+ Details

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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PENSION AND POSTRETIREMENT BENEFITS (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	May. 31, 2015	May. 25, 2014	May. 26, 2013
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, expected withdrawal costs	$ 0.4	$ 0.2	$ 14.2
Expenses related to the defined contribution plans	$ 40.6	$ 40.2	30.7
Maximum
Defined Benefit Plan Disclosure [Line Items]
Red zone multiemployer plans funded percentage	65.00%
Yellow zone multiemployer plans funded percentage	80.00%
Minimum
Defined Benefit Plan Disclosure [Line Items]
Green zone multiemployer plan funded percentage	80.00%
Percentage of plan's total contribution under Forms 5500		5.00%
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value investments ability to impose customary redemption gates	$ 832.7
Fair value investments impose customary redemption gates	1.5
Private equity
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitment for additional investment	96.1
Private energy funds
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitment for additional investment	47.6
Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitment for additional investment	29.1
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	3,900.0	$ 3,900.0
Special termination benefits	6.9	0.4	0.0
Anticipated contributions	13.0
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits	0.0	$ 0.0	$ 0.0
Anticipated contributions	23.7
Ardent Mills
Defined Benefit Plan Disclosure [Line Items]
Special termination benefits	$ 6.9