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Information for Company Retirement Plans for which the Projected Benefit Obligation Exceeds Assets (Detail) (Pension Plans, Defined Benefit, USD $) In Thousands, unless otherwise specified	Dec. 25, 2011	Dec. 26, 2010
Pension Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Projected benefit obligation	$ 3,351,494	$ 3,148,228
Fair value of plan assets	$ 2,408,768	$ 2,514,939

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- Definition

Defined Benefit Plan, Pension Plans With Projected Benefit Obligations In Excess Of Plan Assets, Aggregate Fair Value Of Plan Assets

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- Definition

Defined Benefit Plan, Pension Plans With Projected Benefit Obligations In Excess Of Plan Assets, Aggregate Projected Benefit Obligation

+ References

No definition available.

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