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Nature of Operations and Significant Accounting Policies Nature of Operations and Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 25, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Restructuring and Related Costs | These amounts are recognized in labor and fringe and materials, supplies and other on the consolidated statements of income.
Workforce Reduction Plans, Separation & Other Costs
(Dollars in millions) | 2015 | 2014
Union agreements | $ | 28 |  | $ | — |
Facility closures | 19 |  | — |
Management streamlining | 4 |  | 39 |
Total costs | $ | 51 |  | $ | 39 |

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 + Details
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