The cash inflow from the amounts received from governmental entities to fund capital expenditures.

No definition available.

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- Definition

Long-term Purchase Commitment, Term

+ References

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

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- Definition

The gains (losses) included in results of operations resulting from the sale or disposal of property, plant and equipment, which do not qualify for treatment as discontinued operations. This item does not include any gain (loss) recognized on the sale of oil and gas property or timber property.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 37, 41, 42, 43, 45

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: 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 3: 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

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2443-110228

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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

Divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

The value of all consideration given or received by the Entity in the significant acquisition or disposal.

+ References

No definition available.

+ Details

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Nature of Operations and Significant Accounting Policies (Amortization of Gain from Property Disposition) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Nov. 30, 2011 mi	Mar. 29, 2013	Mar. 30, 2012	Dec. 28, 2012
Significant Acquisitions and Disposals [Line Items]
Total number of rail route miles		21,000
SunRail Transaction - Sale of Corridor [Member]
Significant Acquisitions and Disposals [Line Items]
Total number of rail route miles	61
Proceeds from sale of operating rail corridor	$ 173
Total consideration given from sale of operating rail corridor	432
Gain on sale of real estate		29	19
Deferred gain on sale of real estate	160	23		52
SunRail Transaction - Sale of Corridor [Member] \| Current portion, included in Other Current Liabilities [Member]
Significant Acquisitions and Disposals [Line Items]
Deferred gain on sale of real estate		23		43
SunRail Transaction - Sale of Corridor [Member] \| Long term portion, included in Other Long-term Liabilities [Member]
Significant Acquisitions and Disposals [Line Items]
Deferred gain on sale of real estate		0		9
Capital Additions [Member] \| SunRail Transaction - Sale of Corridor [Member]
Significant Acquisitions and Disposals [Line Items]
Obligation to invest in routine captial expenditures and maintenance	500
Obligation to invest in routine captial expenditures and maintenance, term (in years)	8 years
Maximum [Member] \| SunRail Transaction - Sale of Corridor [Member]
Significant Acquisitions and Disposals [Line Items]
Government grants received for sale of operating rail corridor	$ 259