Number of consecutive years of highest compensation used to determine defined benefit pension plan benefits.

No definition available.

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- Definition

The cash contribution to the defined benefit plan that will not be fully allocated to the pension plan investments in accordance with the targeted asset allocation until after the end of the fiscal year.

+ References

No definition available.

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- Definition

Defined benefit plan net periodic benefit costs period increase decrease.

+ References

No definition available.

+ Details

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- Definition

Maximum percentage of qualified earnings that can be contributed to the savings plan.

+ References

No definition available.

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- Definition

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

+ References

+ Details

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ 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 (d)(5)(ii)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2709-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(5)(iv)(01)
-URI http://asc.fasb.org/extlink&oid=82843861&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.

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- Definition

Amount of contributions expected to be received by defined benefit plan from employer in fiscal year. Excludes contributions paid by employer in current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2709-114920

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- Definition

Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

+ References

+ Details

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- Definition

Percentage of employer's matching contributions to a defined contribution plan that vests in a given year.

+ References

No definition available.

+ Details

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- Definition

Amount of payment for other postretirement benefits. Excludes pension benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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Pension and Savings Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Aug. 25, 2018	Aug. 26, 2017	Aug. 27, 2016	Aug. 29, 2015
Defined Benefit Plan Disclosure [Line Items]
Consecutive years of highest compensation used to determine defined benefit pension plan benefits		5 years
Cash contribution in asset allocation		$ 17.5	$ 48.0
Expected long-term rate of return on plan assets		7.00%	7.00%	7.00%
Plan benefit service cost		$ 0
Change to net periodic benefit cost			$ 1,800,000
Annual contributions by the Company to pension plans		17,761,000	52,721,000	$ 17,100,000
Expected contributions to the plans by the Company in next 12 months		$ 20,300,000
Percentage of company matching retirement savings plan contributions that vest immediately		100.00%
Percentage of savings option up to qualified earnings		25.00%
Annual contribution by employer towards 401(k) Plan		$ 21,000,000	$ 19,700,000	$ 17,700,000
Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets	6.00%