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Properties (Tables) | 12 Months Ended
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Dec. 25, 2015
Property, Plant and Equipment [Abstract] |
Schedule of net properties | A detail of the Company’s net properties are as follows:
(Dollars in Millions) |  |  |  | Accumulated |  | Net Book |  | Annual Depreciation |  | Depreciation |  | Estimated Useful
December 2015 |  | Cost |  | Depreciation |  | Value |  | Rate |  | Method |  | Life
Road |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Rail and Other Track Material |  | $ | 7,150 |  |  | $ | (1,414 | ) |  | $ | 5,736 |  |  | 2.5% |  | Group Life |  |
|  | Ties |  | 5,077 |  |  | (1,147 | ) |  | 3,930 |  |  | 3.7% |  | Group Life |  |
|  | Grading |  | 2,533 |  |  | (479 | ) |  | 2,054 |  |  | 1.4% |  | Group Life |  |
|  | Ballast |  | 2,793 |  |  | (802 | ) |  | 1,991 |  |  | 2.7% |  | Group Life |  |
|  | Bridges, Trestles, and Culverts |  | 2,238 |  |  | (283 | ) |  | 1,955 |  |  | 1.6% |  | Group Life |  |
|  | Signals and Interlockers |  | 2,315 |  |  | (416 | ) |  | 1,899 |  |  | 4.0% |  | Group Life |  |
|  | Buildings |  | 1,152 |  |  | (424 | ) |  | 728 |  |  | 2.5% |  | Group Life |  |
|  | Other |  | 4,306 |  |  | (1,793 | ) |  | 2,513 |  |  | 4.2% |  | Group Life |  |
Total Road |  | 27,564 |  |  | (6,758 | ) |  | 20,806 |  |  |  |  |  |  | 8-90 Years
Equipment |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Locomotive |  | 5,673 |  |  | (2,461 | ) |  | 3,212 |  |  | 3.6% |  | Group Life |  |
|  | Freight Cars |  | 3,362 |  |  | (1,018 | ) |  | 2,344 |  |  | 3.2% |  | Group Life |  |
|  | Work Equipment and Other |  | 2,073 |  |  | (1,154 | ) |  | 919 |  |  | 7.1% |  | Group Life |  |
Total Equipment |  | 11,108 |  |  | (4,633 | ) |  | 6,475 |  |  |  |  |  |  | 3-38 Years
Land |  |  |  | 1,858 |  |  | — |  |  | 1,858 |  |  | N/A |  | N/A |  | N/A
Construction In Progress |  | 1,003 |  |  | — |  |  | 1,003 |  |  | N/A |  | N/A |  | N/A
Other |  |  |  | 41 |  |  | (9 | ) |  | 32 |  |  | N/A |  | Straight Line |  | 4-30 Years
Total Properties |  | $ | 41,574 |  |  | $ | (11,400 | ) |  | $ | 30,174 |  |  |  |  |  |  |
NOTE 6. Properties, continued
(Dollars in Millions) |  |  |  | Accumulated |  | Net Book |  | Annual Depreciation |  | Depreciation |  | Estimated Useful
December 2014 |  | Cost |  | Depreciation |  | Value |  | Rate |  | Method |  | Life
Road |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Rail and Other Track Material |  | $ | 6,771 |  |  | $ | (1,400 | ) |  | $ | 5,371 |  |  | 2.5% |  | Group Life |  |
|  | Ties |  | 4,807 |  |  | (1,060 | ) |  | 3,747 |  |  | 3.7% |  | Group Life |  |
|  | Grading |  | 2,460 |  |  | (481 | ) |  | 1,979 |  |  | 1.4% |  | Group Life |  |
|  | Ballast |  | 2,693 |  |  | (679 | ) |  | 2,014 |  |  | 2.7% |  | Group Life |  |
|  | Bridges, Trestles, and Culverts |  | 2,119 |  |  | (278 | ) |  | 1,841 |  |  | 1.6% |  | Group Life |  |
|  | Signals and Interlockers |  | 2,103 |  |  | (356 | ) |  | 1,747 |  |  | 4.0% |  | Group Life |  |
|  | Buildings |  | 1,102 |  |  | (377 | ) |  | 725 |  |  | 2.5% |  | Group Life |  |
|  | Other |  | 4,070 |  |  | (1,517 | ) |  | 2,553 |  |  | 4.2% |  | Group Life |  |
Total Road |  | 26,125 |  |  | (6,148 | ) |  | 19,977 |  |  |  |  |  |  | 8-90 Years
Equipment |  |  |  |  |  |  |  |  |  |  |  |
|  | Locomotive |  | 5,036 |  |  | (2,325 | ) |  | 2,711 |  |  | 3.6% |  | Group Life |  |
|  | Freight Cars |  | 3,244 |  |  | (1,169 | ) |  | 2,075 |  |  | 3.2% |  | Group Life |  |
|  | Work Equipment and Other |  | 1,828 |  |  | (1,032 | ) |  | 796 |  |  | 7.1% |  | Group Life |  |
Total Equipment |  | 10,108 |  |  | (4,526 | ) |  | 5,582 |  |  |  |  |  |  | 3-38 Years
Land |  |  |  | 1,875 |  |  | — |  |  | 1,875 |  |  | N/A |  | N/A |  | N/A
Construction In Progress |  | 1,196 |  |  | — |  |  | 1,196 |  |  | N/A |  | N/A |  | N/A
Other |  |  |  | 39 |  |  | (85 | ) |  | (46 | ) |  | N/A |  | Straight Line |  | 4-30 Years
Total Properties |  | $ | 39,343 |  |  | $ | (10,759 | ) |  | $ | 28,584 |  |  |  |  |  |  |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5 + Details
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