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Employee Benefit Plans (Assumptions) (Details)	12 Months Ended
	Dec. 30, 2015	Dec. 31, 2014	Dec. 25, 2013
Weighted-average assumptions used to determine net perioidic pension cost
Discount rate	4.12%	4.98%	4.18%
Expected long-term rate of return on assets	5.75%	6.50%	7.75%
Pension Plan [Member]
Weighted-average assumptions used to determine benefit obligations
Discount rate	1.34%	4.12%
Other Defined Benefit Plans [Member]
Weighted-average assumptions used to determine benefit obligations
Discount rate	3.62%	4.12%
Active and vested deferred participants [Member]
Weighted-average assumptions used to determine net perioidic pension cost
Percentage of participants that will elect a lump sum upon liquidation	70.00%
Retired participants [Member]
Weighted-average assumptions used to determine net perioidic pension cost
Percentage of participants that will elect a lump sum upon liquidation	50.00%

X

- Definition

Percentage of defined benefit plan participants electing lump sum upon liquidation

+ References

No definition available.

+ Details

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X

- Definition

The interest rate used to adjust for the time value of money for the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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X

- Definition

The interest rate used to adjust for the time value of money.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Long-Term Rate of Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512046

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- References

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