The net increase or decrease of 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.

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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 amount of the transition obligation or asset recognized in net periodic benefit cost.

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If applicable, the cost of providing special or contractual termination benefits recognized during the period on the projected benefit obligation.

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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 aggregate amount of net gain (loss) recognized in net periodic benefit cost due to settlements and curtailments. Curtailments result from an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services. Settlements result from 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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The amount of pension benefit costs recognized during the period for (1) defined benefit plans and (2) defined contribution plans. For defined benefit plans, pension expense includes the following components: service cost, interest cost, expected return on plan assets, gain (loss) on plan assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. For defined contribution plans, the pension expense generally equals the firm's contribution to employees' accounts (if the firm contributes) during the period.

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Defined benefit plan, Total cost.

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Pension and Postretirement Plans (Components of Total Cost (Income) from Defined Benefit Plans) (Details) (USD $) In Thousands	3 Months Ended						6 Months Ended		12 Months Ended
	Jul. 03, 2011	Apr. 03, 2011	Jan. 02, 2011	Oct. 03, 2010	Jul. 04, 2010	Apr. 04, 2010	Jul. 03, 2011	Jul. 04, 2010	Jan. 02, 2011	Jan. 03, 2010
Net periodic cost (benefit)							$ 1,747	$ 1,199
Early retirement programs expense							430
Total (income) cost	1,458	(141)	1,741	(1,732)	(16,936)	435	1,317	(16,501)	(16,492)	(49,854)
Pension Plans [Member]
Service cost	6,760				6,835		13,974	14,133
Interest cost	14,964				14,993		30,069	30,187
Expected return on assets	(24,064)				(23,688)		(47,553)	(47,711)
Amortization of transition asset					(7)			(14)
Amortization of prior service cost (credit)	882				1,103		1,763	2,206
Net periodic cost (benefit)	(1,458)				(764)		(1,747)	(1,199)
Early retirement programs expense							430
Total (income) cost	(1,458)				(764)		(1,317)	(1,199)
Other Postretirement Benefit Plans [Member]
Service cost	718				846		1,436	1,693
Interest cost	765				998		1,531	1,995
Amortization of prior service cost (credit)	(1,412)				(1,288)		(2,825)	(2,575)
Recognized actuarial loss (gain)	(480)				(512)		(960)	(1,025)
Net periodic cost (benefit)	(409)				44		(818)	88
Supplemental Executive Retirement Plan (SERP) [Member]
Service cost	380				344		760	689
Interest cost	1,084				1,072		2,168	2,144
Amortization of prior service cost (credit)	65				102		130	203
Recognized actuarial loss (gain)	353				238		706	476
Total (income) cost	$ 1,882				$ 1,756		$ 3,764	$ 3,512