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Pension Plans And Other Retirement Benefits (Changes In Funded And Unfunded Pension And Retirement Plan) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 28, 2012	Apr. 30, 2011
Pension Funded Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 9,825	$ 8,250
Interest cost	10,263	9,453
Expected return on plan assets	(13,926)	(12,259)
Recognized actuarial losses	7,097	2,313
Total expense	13,259	7,757
Pension Unfunded Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	339	266
Interest cost	570	624
Amortization of prior service cost	1	1
Recognized actuarial losses	475	207
Total expense	$ 1,385	$ 1,098

X

- Definition

Amount of gain (loss) from a decision to temporarily deviate from the substantive plan, or from a change in benefit obligation or plan asset value from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover or salary scale.

+ References

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-Topic 715

-SubTopic 30

-Glossary Gain or Loss

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- Definition

The amounts in accumulated other comprehensive income related to prior service cost or credit expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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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 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.

+ References

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