Retirement Plans (Schedule of Actual and Target Allocations of Plan Assets) (Details) (Pension and Other Postretirement Benefit Plans [Member])	12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended
Dec. 28, 2013 Minimum [Member] Equity [Member]	Dec. 29, 2012 Minimum [Member] Equity [Member]	Dec. 28, 2013 Minimum [Member] Fixed income [Member]	Dec. 29, 2012 Minimum [Member] Fixed income [Member]	Dec. 28, 2013 Minimum [Member] Alternative and other investments [Member]	Dec. 29, 2012 Minimum [Member] Alternative and other investments [Member]	Dec. 29, 2012 Maximum [Member] Equity [Member]	Dec. 28, 2013 Maximum [Member] Equity [Member]	Dec. 29, 2012 Maximum [Member] Fixed income [Member]	Dec. 28, 2013 Maximum [Member] Fixed income [Member]	Dec. 29, 2012 Maximum [Member] Alternative and other investments [Member]	Dec. 28, 2013 Maximum [Member] Alternative and other investments [Member]
Target Allocations [Abstract]
Actual plan asset allocations (percent)	53.00%	51.00%	23.00%	25.00%	2.00%	4.00%	64.00%	65.00%	32.00%	33.00%	24.00%	24.00%
Target plan asset allocations range, minimum (percent)	60.00%		25.00%		10.00%
Target plan asset allocations range, maximum (percent)							75.00%		35.00%		30.00%

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Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis.

+ 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 (d)(i)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(i)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920

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Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis.

+ References

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Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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