Employee Benefit Plans - amounts recognized in balance sheet (Detail) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2014	Nov. 24, 2013
Pension plans, defined benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	$ 1,587	$ 1,331
Accrued benefit liability - current portion	(8,926)	(8,622)
Accrued benefit liability - long-term portion	(403,175)	(323,475)
Amount recognized in balance sheet	(410,514)	(330,766)
Accumulated other comprehensive loss:
Net actuarial loss	(394,090)	(343,148)
Net prior service benefit	548	666
Other comprehensive income (loss)	(393,542)	(342,482)
Other postretirement benefit plans, defined benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	0	0
Accrued benefit liability - current portion	(11,871)	(13,347)
Accrued benefit liability - long-term portion	(122,213)	(122,248)
Amount recognized in balance sheet	(134,084)	(135,595)
Accumulated other comprehensive loss:
Net actuarial loss	(36,505)	(34,248)
Net prior service benefit	0	0
Other comprehensive income (loss)	$ (36,505)	$ (34,248)

The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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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

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- Definition

Amount related to the pretax cost of benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as components of net periodic benefit cost.

+ References

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- Definition

The aggregate net amount recognized in the balance sheet associated with the defined benefit plan(s). Will normally be the same as the Defined Benefit Plan, Funded Status of Plan, Total.

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The amount for overfunded plans recognized in the balance sheet as a noncurrent asset associated with a defined benefit pension plan or other postretirement defined benefit plan.

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For a classified balance sheet, the amount recognized in balance sheet as a current liability associated with an underfunded defined benefit plan.

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This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

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