Long-term Purchase Commitment, Term

No definition available.

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- Definition

The approximate distance of rail road network.

+ References

No definition available.

+ Details

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- Definition

Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 40

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.U.Q2)

-URI http://asc.fasb.org/extlink&oid=6955272&loc=d3e221323-122791

+ Details

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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Nature of Operations and Significant Accounting Policies (Amortization of Gain from Property Disposition) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		3 Months Ended		9 Months Ended			1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 27, 2013 mi	Sep. 28, 2012	Sep. 27, 2013 SunRail Transaction - Sale of Corridor [Member]	Sep. 28, 2012 SunRail Transaction - Sale of Corridor [Member]	Sep. 27, 2013 SunRail Transaction - Sale of Corridor [Member]	Sep. 28, 2012 SunRail Transaction - Sale of Corridor [Member]	Nov. 30, 2011 SunRail Transaction - Sale of Corridor [Member]	Nov. 30, 2011 Capital Additions [Member] SunRail Transaction - Sale of Corridor [Member]	Sep. 28, 2012 Capital Additions [Member] SunRail Transaction - Sale of Corridor [Member]	Sep. 27, 2013 Capital Additions [Member] SunRail Transaction - Sale of Corridor [Member]	Sep. 28, 2012 Capital Additions [Member] SunRail Transaction - Sale of Corridor [Member]
Significant Acquisitions and Disposals [Line Items]
Total number of rail route miles	21,000
Obligation to invest in routine captial expenditures and maintenance								$ 500
Obligation to invest in routine captial expenditures and maintenance, term (in years)								8 years
Investment obligation made during the period	1,687	1,830							80	142	225
Gain on sale of real estate			0	30	43	69
Deferred gain on sale of real estate							$ 160