Pension Benefits - Schedule of Allocation of Plan Assets (Details)	12 Months Ended
	Dec. 29, 2013
Pension Benefits
Percent of funded status policy minimum range	95.00%
Percent of funded status policy maximum range	97.50%
Long Duration Assets [Member]
Pension Benefits
Target allocation percentage of assets, range minimum	62.00%
Target allocation percentage of assets, range maximum	72.00%
Return Seeking Assets [Member]
Pension Benefits
Target allocation percentage of assets, range minimum	28.00%
Target allocation percentage of assets, range maximum	38.00%
Company Sponsored Pension Plan [Member] | Public Equity [Member]
Pension Benefits
Equity securities target allocation, range minimum	70.00%
Equity securities allocation, range maximum	90.00%
Actual return of plan asset allocations	27.00%
Company Sponsored Pension Plan [Member] | Growth Fixed Income Member]
Pension Benefits
Equity securities target allocation, range minimum	0.00%
Equity securities allocation, range maximum	15.00%
Actual return of plan asset allocations	69.00%
Company Sponsored Pension Plan [Member] | Alternative [Member]
Pension Benefits
Equity securities target allocation, range minimum	0.00%
Equity securities allocation, range maximum	15.00%
Actual return of plan asset allocations	4.00%
Company Sponsored Pension Plan [Member] | Cash and Cash Equivalents [Member]
Pension Benefits
Equity securities target allocation, range minimum	0.00%
Equity securities allocation, range maximum	10.00%
Actual return of plan asset allocations	0.00%