Employee Benefits (Weighted Average Assumptions Used to Calculate Net Period Benefit Costs- Retirement Plans) (Details)	0 Months Ended	12 Months Ended
	Jan. 03, 2012 Retirement Income Plan	Dec. 31, 2012 Net Periodic Benefit Costs Retirement Income Plan	Dec. 31, 2011 Net Periodic Benefit Costs Retirement Income Plan	Dec. 31, 2010 Net Periodic Benefit Costs Retirement Income Plan	Dec. 31, 2012 Net Periodic Benefit Costs Supplement Retirement Plan	Dec. 31, 2011 Net Periodic Benefit Costs Supplement Retirement Plan	Dec. 31, 2010 Net Periodic Benefit Costs Supplement Retirement Plan	Dec. 31, 2012 Net Periodic Benefit Costs Excess Benefit Plan	Dec. 31, 2011 Net Periodic Benefit Costs Excess Benefit Plan	Dec. 31, 2010 Net Periodic Benefit Costs Excess Benefit Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate		4.30%	5.40%	5.90%	3.60%	4.60%	5.20%	4.10%	5.30%	6.00%
Expected long-term return on plan assets	7.50%	7.50%	7.50%	7.50%
Rate of compensation increase		5.00%	5.00%	5.00%				5.00%	5.00%	5.00%