Reduction in net expense related to benefit retirement plan.

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- Definition

Fair value investments ability to impose customary redemption gates.

+ References

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.

+ Details

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- Details

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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.

+ Details

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- Definition

Unfunded commitment for additional investment.

+ References

No definition available.

+ Details

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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=21915506&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 10A

-Subparagraph (i)

-URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669646-108580

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 158

-Paragraph 7

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph i

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (j)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

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- Definition

The interest rate used to adjust for the time value of money for the plan.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph j

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (k)(1)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

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- Definition

The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

+ 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 (g)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph g

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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=6414718&loc=d3e28014-114942

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 11

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Pension and Postretirement Benefits (Details Textual) (USD $)	12 Months Ended
	May 27, 2012	May 29, 2011	May 30, 2010	Sep. 08, 2011
Pension and Postretirement Benefits (Textual) [Abstract]
Expenses related to the defined contribution plans	$ 24,200,000	$ 21,200,000	$ 22,800,000
Discount rate		4.90%		4.30%
Calculated gains as a result of the remeasurement recognized as a credit to other comprehensive loss	27,600,000
Reduction in net expense related to benefit retirement plan	5,200,000
Maximum [Member]
Pension and Postretirement Benefits (Additional Textual) [Abstract]
Red zone multiemployer plans funded percentage	65.00%
Yellow zone multiemployer plans funded percentage	80.00%
Minimum [Member]
Pension and Postretirement Benefits (Additional Textual) [Abstract]
Green zone multiemployer plan funded percentage	80.00%
Percentage of plan's total contribution under Forms 5500	5.00%
Level 3 [Member]
Pension and Postretirement Benefits (Additional Textual) [Abstract]
Fair value investments ability to impose customary redemption gates	462,000,000
Fair value investments impose customary redemption gates	4,500,000
Pension Benefits [Member]
Pension and Postretirement Benefits (Additional Textual) [Abstract]
Accumulated benefit obligation	3,200,000,000	2,800,000,000
Contribution to pension plan and other postretirement plans	19,700,000
Pension and Postretirement Benefits (Textual) [Abstract]
Discount rate	4.50%	5.30%
Calculated gains as a result of the remeasurement recognized as a credit to other comprehensive loss	(332,000,000)	(205,900,000)
Other Benefits [Member]
Pension and Postretirement Benefits (Additional Textual) [Abstract]
Contribution to pension plan and other postretirement plans	30,900,000
Pension and Postretirement Benefits (Textual) [Abstract]
Discount rate	3.90%	4.90%
Calculated gains as a result of the remeasurement recognized as a credit to other comprehensive loss	(80,500,000)	(75,600,000)
Private equity [Member]
Pension and Postretirement Benefits (Additional Textual) [Abstract]
Unfunded commitment for additional investment	23,000,000
Private energy funds [Member]
Pension and Postretirement Benefits (Additional Textual) [Abstract]
Unfunded commitment for additional investment	23,000,000
Real estate funds [Member]
Pension and Postretirement Benefits (Additional Textual) [Abstract]
Unfunded commitment for additional investment	$ 5,000,000