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Employee Benefit Plans (Plan Assets) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 25, 2015 | Dec. 26, 2014
Defined Benefit Plan Disclosure [Line Items] |  |
Amount | $ 2,309 | $ 2,504
Percent of Total Assets | 100.00% | 100.00%
Equity [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Targeted and established equity allocation (in hundredths) | 70.00% |
Targeted allocation of total plan assets in domestic equity (in hundredths) | 42.00% |
Targeted allocation of total plan assets in international equity (in hundredths) | 28.00% |
Percentage within which the planned allocation is managed (in hundredths) | 3.00% |
Amount | $ 1,626 | $ 1,715
Percent of Total Assets | 70.00% | 68.00%
Fixed Income [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Targeted and established equity allocation (in hundredths) | 30.00% |
Amount | $ 641 | $ 740
Percent of Total Assets | 28.00% | 30.00%
Cash and Cash Equivalents [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Amount | $ 42 | $ 49
Percent of Total Assets | 2.00% | 2.00%

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- Definition Target allocation percentage of investments in equity securities to total plan assets in international equity. + References No definition available. + Details
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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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