Retirement Plans (Health Care Cost Trend Rates For Postretirement Health Plans) (Details)	12 Months Ended
Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Participants Under Age 65 [Member]
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate for next year	8.25%	8.50%	8.50%
Rate to which the cost trend rate is assumed to decline	4.50%		4.50%
Year the rate reaches the ultimate trend rate	2030		2029
Participants Age 65 Or Older [Member]
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate for next year	7.75%	8.00%	8.00%
Rate to which the cost trend rate is assumed to decline	4.50%		4.50%
Year the rate reaches the ultimate trend rate	2028		2027

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The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ 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=35743120&loc=d3e1928-114920

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Health Care Cost Trend Rate

-URI http://asc.fasb.org/extlink&oid=6514820

+ Details

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- Definition

The ultimate trend rate for health care costs.

+ References

+ Details

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- Definition

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

+ References

+ Details

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