Employee and Retiree Benefits (Postretirement Health Care and Deferred Compensation Benefits) (Details) (USD $) In Thousands, unless otherwise specified	Aug. 30, 2014	Aug. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Postretirement health care benefit cost	$ 36,930	$ 36,244
Non-qualified deferred compensation	21,014	22,366
Executive share option plan liability	5,628	6,959
SERP benefit liability	2,974	2,876
Executive deferred compensation	213	105
Officers stock-based compensation	627	543
Total postretirement health care and deferred compensation benefits	67,386	69,093
Less current portion	(4,575)	(5,019)
Long-term postretirement health care and deferred compensation benefits	$ 62,811	$ 64,074

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Amounts due to recorded owners or owners with a beneficial interest of more than 10 percent of the voting interests or officers of the company, which are due after one year (or one business cycle).

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This represents the noncurrent liability recognized in the balance sheet that is associated with other postretirement defined benefit plans (excluding pension plans).

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The current liability recognized in the balance sheet that is associated with defined benefit pension plans and other postretirement and postemployment benefit plans.

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This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans.

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This represents the entire liability recognized in the balance sheet that is associated with the executive deferred compensation plan.

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This represents the entire liability recognized in the balance sheet that is associated with the executive share option plans.

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This represents the entire liability recognized in the balance sheet that is associated with the non-qualified deferred compensation plan.

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This represents the entire liability recognized in the balance sheet that is associated with the postretirement health care benefits.

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This represents the entire liability recognized in the balance sheet that is associated with the SERP benefit plan.

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