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Employee Benefit and Retirement Plans (Details 7)	12 Months Ended
Employee Benefit and Retirement Plans (Details 7)	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
weighted-average assumptions used in the actuarial calculations for the Pension Plans and Postretirement Plans
Discount rate used for determining projected benefit obligation	5.20%	5.80%	6.10%
Discount rate used for determining net benefit (income) cost	5.80%	6.10%	8.00%
Long-term rate of return on plan assets	7.00%	8.00%	8.00%
Average rate of compensation increase for determining projected benefit obligation	0.00%	0.00%	0.00%
Average rate of compensation increase for determining net benefit (income) cost	0.00%	0.00%	0.00%

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

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