Related Party Transactions (Consolidated Income Statements Components) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 25, 2015	Dec. 26, 2014	Dec. 27, 2013
Related Party Amounts Consolidated Income Statements [Abstract]
Equity earnings	$ 0	$ 0	$ 0
TTX Company [Member] \| Materials, Supplies and Other [Member]
Related Party Amounts Consolidated Income Statements [Abstract]
Car Hire Rents	218	207	180
Equity earnings	(20)	(21)	(13)
Total	198	186	167
Corporate Joint Venture [Member] \| Materials, Supplies and Other [Member]
Related Party Amounts Consolidated Income Statements [Abstract]
Rents, fees and services	123	124	115
Purchase price amortization and other	4	4	4
Equity earnings	(33)	(31)	(35)
Total	$ 94	$ 97	$ 84

Car Hire Rents

No definition available.

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- Definition

The amortization of the fair value write-up of fixed assets when the original purchase price from the acquisition was allocated based on fair value.

+ References

No definition available.

+ Details

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- Definition

Related Party Amounts Consolidated Income Statements [Abstract]

+ References

No definition available.

+ Details

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- Definition

Total amount of related party rents, fees and services in the Company's consolidated income statements.

+ References

No definition available.

+ Details

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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.12)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 9
-Article 5

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph 11
-Article 7

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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- Details

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