Postretirement Benefits Assumed Health Care Trend Rates (Details)	12 Months Ended
Dec. 29, 2013 Rate	Dec. 30, 2012 Rate	Jan. 01, 2012 Rate
Compensation and Retirement Disclosure [Abstract]
Medical benefits cost trend rate assumed for the following year pre-65	7.50%	8.00%	8.00%
Medical benefits cost trend rate assumed for the following year post-65	5.88%	6.00%	6.50%
Prescription drug benefit cost trend rate assumed for the following year	6.75%	7.00%	7.50%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.00%	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	2021	2021	2017

Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, post-65

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- Definition

Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, pre-65

+ References

No definition available.

+ Details

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- Definition

Defined Benefit Plan, Prescription Drug Benefit Cost Trend Rate Assumed for Next Fiscal Year

+ References

No definition available.

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- Details

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- Definition

The ultimate trend rate for health care costs.

+ 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 (l)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

Year the ultimate health care cost trend rate is expected to be reached, in CCYY format.

+ References

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