Defined benefit plan target allocation percentage of assets.

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- Definition

The percentage of the fair value of debt securities to the fair value of total plan assets held as of the measurement date.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 5

-Subparagraph (c)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

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- Definition

The percentage of the fair value of equity securities to the fair value of total plan assets held as of the measurement date.

+ References

+ Details

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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=6867990&loc=d3e12355-114930

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(iv)(b)(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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-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 Statement of Financial Accounting Standard (FAS)

-Number 87

-Paragraph 49

-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 5: 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=6962843&loc=d3e1928-114920

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- Definition

The percentage of the fair value of investments other than debt securities, equity securities, and real estate to the fair value of total plan assets held as of the measurement date.

+ References

+ Details

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- Definition

The percentage of the fair value of real estate to the fair value of total plan assets held as of the measurement date.

+ References

+ Details

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- Definition

Target allocation percentage of investments in debt securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(2)

-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 5

-Subparagraph (c)(i)

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(i)

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

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- Definition

Target allocation percentage of investments in equity securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.

+ Details

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- Definition

The aggregate percentage of the fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of total plan assets held as of the measurement date.

+ References

+ Details

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Pension and Savings Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 27, 2011	Aug. 28, 2010	Aug. 29, 2009
Weighted average asset allocation for pension plan assets
Fair value of plan assets	$ 156,883	$ 117,243	$ 115,313
Asset Allocation, Actual
Asset Allocation, Actual	100.00%	100.00%
Asset Allocation, Target
Debt Securities	30.00%	20.00%
Asset Allocation, Target	100.00%	100.00%
U.S. equities [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	40,092	33,445
Asset Allocation, Actual
Equities	25.50%	28.50%
Asset Allocation, Target
Equities	30.00%	35.00%
U.S. equities [Member] \| Level 1 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
U.S. equities [Member] \| Level 2 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	40,092	33,445
U.S. equities [Member] \| Level 3 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
International Equities [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	28,378	24,049
Asset Allocation, Actual
Equities	18.10%	20.50%
Asset Allocation, Target
Equities	20.00%	25.00%
International Equities [Member] \| Level 1 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
International Equities [Member] \| Level 2 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	28,378	24,049
International Equities [Member] \| Level 3 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Emerging Equities [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	12,086	10,431
Asset Allocation, Actual
Equities	7.70%	8.90%
Asset Allocation, Target
Equities	10.00%	10.00%
Emerging Equities [Member] \| Level 1 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Emerging Equities [Member] \| Level 2 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	12,086	10,431
Emerging Equities [Member] \| Level 3 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
High Yield Equities [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	12,547	10,604
Asset Allocation, Actual
Equities	8.00%	9.00%
Asset Allocation, Target
Equities	10.00%	10.00%
High Yield Equities [Member] \| Level 1 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
High Yield Equities [Member] \| Level 2 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	12,547	10,604
High Yield Equities [Member] \| Level 3 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Alternative Investments [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	2,807	4,348
Asset Allocation, Actual
Investments	1.80%	3.70%
Alternative Investments [Member] \| Level 1 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Alternative Investments [Member] \| Level 2 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Alternative Investments [Member] \| Level 3 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	2,807	4,348
Real Estate [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	2,474	7,348
Asset Allocation, Actual
Real estate	1.60%	6.30%
Real Estate [Member] \| Level 1 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Real Estate [Member] \| Level 2 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Real Estate [Member] \| Level 3 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	2,474	7,348
Fixed Income Securities [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	27,321	22,131
Asset Allocation, Actual
Debt Securities	17.40%	18.90%
Fixed Income Securities [Member] \| Level 1 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Fixed Income Securities [Member] \| Level 2 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	27,321	22,131
Fixed Income Securities [Member] \| Level 3 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Cash and Cash Equivalents [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	31,178	4,887
Asset Allocation, Actual
Investments	19.90%	4.20%
Cash and Cash Equivalents [Member] \| Level 1 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Cash and Cash Equivalents [Member] \| Level 2 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	31,178	4,887
Cash and Cash Equivalents [Member] \| Level 3 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Level 1 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	0	0
Level 2 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	151,602	105,547
Level 3 [Member]
Weighted average asset allocation for pension plan assets
Fair value of plan assets	$ 5,281	$ 11,696