PENSION AND OTHER POSTRETIREMENT PLANS (Details 1) (USD $) In Thousands	9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
Aug. 27, 2011	Nov. 27, 2010	Aug. 27, 2011 Pension Benefits [Member]	Aug. 28, 2010 Pension Benefits [Member]	Aug. 27, 2011 Pension Benefits [Member]	Aug. 28, 2010 Pension Benefits [Member]	Aug. 27, 2011 Postretirement Healthcare Benefit Plan [Member]	Aug. 28, 2010 Postretirement Healthcare Benefit Plan [Member]	Aug. 27, 2011 Postretirement Healthcare Benefit Plan [Member]	Aug. 28, 2010 Postretirement Healthcare Benefit Plan [Member]
Components of net periodic benefit cost (income):
Service cost			$ 492	$ 527	$ 1,476	$ 1,582
Interest cost			2,013	2,033	6,037	6,103	6	8	18	24
Expected return on plan assets			(1,923)	(1,778)	(5,766)	(5,340)
Settlement cost			0	0	1,368	0
Amortization of unrecognized:
Prior service cost			(98)	(98)	(296)	(296)	(31)	(31)	(93)	(93)
Net actuarial loss (gain)			1,265	1,200	3,688	3,600	(32)	(32)	(96)	(96)
Net periodic benefit cost (income)			1,749	1,884	6,507	5,649	(57)	(55)	(171)	(165)
Cash contributions	12,842		10,510	2,935	12,752	3,121	30	39	90	117
Restricted trust, included in Other noncurrent assets	$ 1,249	$ 1,258

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The amount of gains or losses recognized in net periodic benefit cost.

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The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

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The increase in the fair value of plan assets from contributions made by the employer.

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An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

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The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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The amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts to cover vested benefits.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Trading Securities which consist of all investments in certain debt and equity securities that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for which an entity has elected the fair value option. Trading generally reflects active and frequent buying and selling, and trading securities are generally used with the objective of generating profits on short-term differences in price, but this category of investments may also include items which are not intended to be sold in the near term or for which the fair value option has been elected.

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