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Commitments and Contingencies (Details) $ in Millions | 1 Months Ended | 9 Months Ended
--- | --- | ---
Apr. 30, 2014 mi | May. 31, 2007 entity | Sep. 25, 2015 USD ($) party mi
Loss Contingencies [Line Items] |  |  |
Casualty and non catastrophic property deductible |  |  | $ 25
Casualty and catastrophic property deductible |  |  | $ 50
Environmental |  |  |
Loss Contingencies [Line Items] |  |  |
Number of miles pertaining to Passaic River tidal reach required to be studied by EPA | mi |  |  | 17
Number of parties involved in remediation | party |  |  | 60
Number of miles subject to remediation | mi | 8 |  |
Pending Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Range of possible loss for certain legal proceedings, minimum |  |  | $ 3
Range of possible loss for certain legal proceedings, maximum |  |  | $ 52
Pending Litigation | Fuel Surcharge Antitrust Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Class action lawsuits filed against U.S.-based Class I railroads, excluding CSXT (number of entities) | entity |  | 3 |

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