Pension Benefits - Schedule of Assumptions Used (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 28, 2014	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Calculation term, market-related value		3 years
Increase to pension obligation due to change in mortality table assumptions	$ 117.0
Qualified Plans [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate used to calculate benefit obligation	4.05%	4.05%	4.90%
Estimated increase in compensation level used to calculate benefit obligation	2.89%	2.89%	2.55%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate used to calculate net periodic benefit cost		4.90%	4.00%	5.05%
Estimated increase in compensation level use to calculate net periodic benefit cost		2.87%	3.50%	3.00%
Expected long-term rate of return on assets		7.02%	7.85%	8.00%
Non-Qualified Plans [Member]
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate used to calculate benefit obligation	3.90%	3.90%	4.60%
Estimated increase in compensation level used to calculate benefit obligation	2.50%	2.50%	2.50%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate used to calculate net periodic benefit cost		4.60%	3.70%	4.80%
Estimated increase in compensation level use to calculate net periodic benefit cost		2.50%	3.00%	3.50%